User guide - Viso Systems
Contents
1. Exporting to IES LDT It is possible to export the measurements to IES or LDT formats to be further used in Dialux or other 3D lighting design software To export to IES simply select File gt Export gt IES or LDT 31 oR File View Setup Measurement Help n w gt New ataj Measureme kg Saveas Export g I IES pe Open measure folder PNG image PEAK CSV Tab seperated I 60 0 ture Power 4 0W light building software LightSpion user guide Exporting to PDF All measurements can be exported directly to a PDF document Firstly select the measurement and then click File gt Export gt PDF It is also possible to implement your own logo in the PDF and export to different languages like English German and Chinese A typical export procedure is shown below Export to PDF YOUR LOGO Company Greven ou Export language English v Select language 32 tput 2701m ower 40W C eton temperatere P EC eg PF 0 40 Product zame Demo 4 E27 LED BULB Date and b re 05 08 2013 13 57 10 nem number E27 46 45876 TBO am order qaa 100 i directions al E27 light t bulb Omn ad ed RED led e CRI Logo click to edit Om LOGO Company Export gt gt Export directly to PDF Add your own logo THE LED Company Lage vi pen KI output 270 km Peak 35 0cd is Camin 40W mere 0 48 IIK cS zl Cl2. PPT DSV 34 Emailing measurement 35 Advanced SUN er 36 Custom Galbraton 36 Pee es an EE EEE EE 39 Photo spectrometer accuracy rrnrrnnnrnnnrnnnrnnnrnnnrnnnrnnn 39 Optical sensor aCCUraCy rrarrrrnnnrrnnnrnrnnnerranrnrnnnennnnennnn 40 Circular 16 d EEN 42 LUMINOUS flux aCccUraCy rrrnnnrnnnrvnnrnnrrvnnrvnrrvnrrnnrrnnsennee 44 SPECIES PD 46 4 LightSpion user guide Safety Information Warning This product Is not for household use Read this manual before installing and operating the controller follow the safety warnings listed below and study all the cautions in the manual Preventing electric shocks Make sure the power supply IS always grounded Use a source of AC power that complies with the local building and electrical codes that has both overload and ground fault protection lf the controller or the power supply are in any way damaged defective wet or show signs of overheating disconnect the power supply from the AC power and contact Viso Service for assistance Do not install or use the device outdoors Do not spray with or immerse in water or any other liquid Do not remove any covers or attempt to repair the controller or the power supply Refer any service to Viso Disposing of this product Viso products are supplied in compliance with Directive 2002 96 EC of the European Parliament and of the Council of the European Union on WEEE Waste Electrical and Electronic Equipment as amende
3. of the sinus curve can sometimes have a flat top which is explained by the power grid distortions The current is presented with a red line it is displaying how the current is consumed by the light source The power factor is an indication of how well the current is consumed through a voltage period The power factor is calculated according to the following principle the value of the actually consumed power is divided by the product of the volage and the current PF Power Voltage x Current 5 2 238 6 x 0 035 5 2 8 35 0 62 When the transformation of the current by the light source is not efficient the source will consume more current than necessary When the current is not consumed by the light source efficiently the cabling during installation should be adjusted accordingly The excess current will result in power loss due to cables heating etc A general rule is the following a 10W light source with a PF 0 5 must be connected to an installation capable of supplying 20W The corresponding formula reads installation W Power PF 24 LightSpion user guide Example 1 Shows a standard 60W tungsten bulb with an ideal PF of 1 0 and a current curve that is identical to the voltage Example 2 Shows a LED bulb that has a passive Capacitor power supply which results in a high phase shift between current and Power 65 W PF 1 00 Voltage 240 4 V Current 0
4. the xxx gt Leem installation instruction E Ee Vito Light Inspector is being metaled Please wat Congratulations You are finished r pp USB drivers are automatically installing your Light Measurement i n sta ed a The divers were successtuly installed on this computer now connect this computer F your device ou Can Now conn your device to thi came wth instructors please read them frst Your measurements are not lost when installing newer versions or uninstalling All measurements will always remain in your document folder 8 LightSpion user guide Connecting power The LightSpion comes with a standard IEC power in connector and with a standard euro power cable but any power cable can be used as the LightSpion supports any outlet voltage from 90 260VAC The power in connector supplies power both to the goniometer motor and to the power analyser and then subsequently to the measuring light source It means that the power is identical to the one of the measuring light source AC power supply cable plug Warning Risk of an electric shock Plug installation shall be performed by a qualified electrician A grounding type earthed power plug that fits the local power outlet must be used You can acquire an IEC power cable with a suitable grounding type plug from most of consumer electronics stores When installing the plug connect pins as follows yellow and green wire to grounding
5. updated The integration time can be changed during the free run scan as explained in the previous chapter to ensure a correct resolution NOTE After changing the photo spectrometer integration time the spectrum should be Calibrated to ambient light 20 LightSpion user guide Measurement data After the goniometer measurement is complete the following results are displayed 214 4 1 The angular light distribution shows the amount of light from the non rotational symmetrical part of the light source This field distribution is used to calculate the beam angle 2 The complete integrated spherical spectrum is shown in the spectral window Integrated spherical spectrum signifies a spectrum that is mathematically integrated from all of the individual spectra in the spatial distribution Thus it represents the equivalent of a spectrum obtained from an integrating sphere 3 The complete integrated spherical Output 252 Im spectrum calculated in the previous step Peak 1021 cd is utilised to calculate the luminous flux in lumens The peak intensity output in candela is also displayed which accords to the highest level of the light output during goniometer measurement 4 The power is measured by sampling a Power 5 2W voltage and a current at a rate of 50 000 PF 0 62 samples per second to ensure high resolution and thus high power precision 21 LightSpion user guide The power factor PF indicates the q
6. 272 A Voltage 240 4 V Current 0 016 A voltage thus resulting in a very low power factor of 0 19 Example 3 Shows a LED bulb of a medium quality switch mode driver with a high capacity peak load thus a ku ctor of 0 62 medium quality power fa Example 4 Shows a LED bulb having a switch mode driver with a particularly bad filtering It results in Power 5 2 W PF 0 62 Voltage 238 6 V Current 0 035A Update power measumment Voltage 226 8 V Current 0 125A a high noise level of the current Therefore this level of noise would probably not be able to pass the EMC noise level requirements 25 LightSpion user guide CRI details The CRI defines the quality of white light it is also known as the Colour Rendering Index or Ra The value of CRI shows how much the spectrum of a light source resembles that of the Sun thus the ability of the light source to reproduce the colours of an object as if it were illuminated by the Sun The CRI is calculated with the help of the standard test colours which examine the chromatic adaptation of light The standard set consists of 15 test colours but only the first 8 of them known as R1 R8 are used to calculated the CRI whereas the remaining R9 R15 are typically not used However sometimes LED lights do not have a red light component which is considered in the R9 measurement that is why it is becoming more
7. 8 Peak cd 353 75 nm Lo am CIE y pe Angle Candela 046 179 55 178 65 177 66 0 48 176 67 0 47 Etc 34 LightSpion user guide Emailing measurement The Viso Light Inspector software is capable of directly emailing measurements by clicking on the email icon Measurement results for Demo 1 Message HTML Message R H 8 X SA amre K QQ Qa B Moeta jeus G a Q t To Manager g OneNote d X Delete Rep Reply Forward v 9 Move v Translate Zoom amp Junk ly eply BB S team E mail we E Actions Y Follow Up seu S Delete Respond Quick Steps F Move Tags P Editing Zoom monitor lightspion lt monitorsend luminetwork com gt Sent ma19 11 2012 17 46 viso visosystems com Measurement results for Demo 1 er am es SYSTEMS 00000 LightSpion measurement results Light efficiency Vatt Output 258 Im Light quality Peak 354 cd Color temperature Power 4 0 WwW lt PF Beam angle Product name Demo 1 Date and time 30 juli 2012 09 03 52 Rem number Price Minimum order quantatity Additional information c monitor_lightspion 35 LightSpion user guide Advanced setup Custom calibration The LightSpion is delivered in a pre calibrated condition It is also possible to make a custom calibration of the photo spectrometer if desired This could be necessary if the LightSpion is to be certified by an official ag
8. B Approvals Power SUNN avse cUL UL CE CCC TUV FCC Power analyzer photometer nnnonnnenennnnnenneornnnnnnnrennnnnene CE Ordering information Biel es P N LIGSPO01 47 LightSpion user guide
9. LightSpion Patent pending User guide Last edited 2015 01 12 VISO SYSTEMS eee Dimensions Weight 5 kg 2007 Viso Systems ApS Denmark All rights reserved No part of this manual may be reproduced in any form or by any means without permission in writing from Viso Systems ApS Denmark Information subject to change without notice Viso Systems ApS and all affiliated companies disclaim liability for any injury damage direct or indirect loss consequential or economic loss or any other loss occasioned by the use of inability to use or reliance on the information contained in this manual Contents Ve deele Leide EE 6 About the LIGHTS PIOM EE 6 Package Contents 6 About this GOCUMOENI EE 7 als EE 10 NEE 8 Solware MEISTER eege eege eege 8 Connecting Dower ocarina 9 Connecting USB TE 10 Making measurements 11 Measuring light source bulbs and spots arrrnrrnnn 11 Measuring linear lights strips and tubes 06 13 NA see 15 FUNSNHOMAUG een iinneSdaw addres eee een end 16 Manual power Control 18 Manual setup of the integration me 19 Independently running spectrometer rrrnrrnnrrnnrnnnrnnn 20 Measurement data 21 Power JEANS La 24 2 Eo Ere ETE NE EEE HR 26 SPMeriCal VIM EE 28 Attaching ele dt 29 Saving measurement rrrranrrnnnnrnrannnnnnnennanenrnnnennnnennnn 30 3 LightSpion user guide EPO ng IG ES WD HE 31 EON OD PDP eee 32 EXPOTNG OPNE save 32
10. The spectrometer used in the LightSpion is the Ocean Optics STS VIS The accuracy of the spectrometer has been previously tested in a wide temperature range from 10 to 50 degrees therefore the device is adjusted for a temperature drift The linearity of the photo spectrometer is corrected to have an error lt 0 5 from 15 95 full scale 2500 14000 counts net The effect of the linearity error will also affect the colour and CRI measurements so the complete series of measurement errors are as follows Intensity error lt 0 5 Colour temperature error lt 35 Kelvin CRI error lt 0 7 39 LightSpion user guide Optical sensor accuracy The accuracy of the sensor depends on a change of a sensitivity field as a function of position it is also called the sensitivity soan The measurement setup with an indicated sensitivity soan of less than 8 5 is presented below Sensor distance 65cm p Sensitivity span lt 8 5 p p HS WW o eee 400mm 3 I EE The system is constructed for measuring light sources with a maximum diameter of 100mm It is calibrated with the helo of a calibration source with an optical aperture diameter of 35mm with constant Calibration g zen lt 8 5 field of light output Thus Ny subsequently measured light ssmml sources with the same aperture 4 and a constant field will have an error o
11. Therefore the high temperature of the filament is considered as cold light and vice versa If the colour temperature is not displayed it means that either the radiated light does not 22 LightSpion user guide meet the criteria for white light or that light levels are too low to be measured 8 At a closer look the radiated colour is shown with x and y coordinates in the CIE1931 diagram The diagram illustrates all visible to the human eye colours It is based on an experiment conducted in 1931 with a number of participants aiming at figuring out the eye s perception of colour The back line in diagram is called the S black body curve It Measured colour K illustrates all colours that e are defined as white Doch Doch curve 3 colours from warm to cold The point corresponding to the measured colour is shown with a black cross It can be used to check the whiteness of a colour by checking how close it is to the black body curve the closer it is to the black body curve the more accurate is the white colour 23 LightSpion user guide Power details A detailed voltage and current data can be viewed by clicking on the scope button or selecting View gt Power details The real time data of the wem Power 5 2 W voltage and PF 0 62 current is shown a gu e in the power pm wes details window ES the green line illustrates voltage it should have a sinus curve The upper part
12. Viso Light Inspector software makes fully automatic measurements by default It adjusts the photo spectrometer to the background light environment by firstly turning off the light source and secondly measuring the background light level which is subsequently subtracted from the following measurements Therefore the measurements can be done even in a lit room The adjustment of the exposure time of the photo spectrometer also known as the integration time is also done automatically A measurement is simply started by clicking on the play icon Then the integration time is set K Saig bikergrallon dime automatically ibrating to ambient light Cancel The ambient light level is automatically ETE measured by turning off the light source Calibrating to ambient light Cancel The light source is then rotated at 180 degrees to prepare for measurement The power is then measured and stored nm thst P 16 LightSpion user guide 214 4 The complete 360 degrees angular light field is then measured and the beam angle is calculated Light sources with narrow beam angles can have insufficient number of measurements in order to generate an accurate result In such a case the Viso Light Inspector software will ask you automatically whether you would like to have a more detailed scan of the beam section Narrow beam angle The fixture has a narrow beam angle therefore will a more detailed measurement i
13. calculated for each type of light sources by summation of the 3 kinds of error spectrometer intensity error sensor error circular field error total lumen accuracy 1 LED bulb with a frosted glass cone Ul D 0 5 2 1 6 accuracy lt 4 1 2 LED bulb with a frosted plastic cone au 0 5 2 2 3 accuracy lt 4 8 3 Fluorescent bulb with a frosted cone auf 0 5 2 4 6 accuracy lt 7 1 4 Fluorescent open bulb wW 0 5 2 7 9 accuracy lt 10 4 5 Incandescent clear glass uE 0 5 2 10 2 accuracy lt 12 7 44 LightSpion user guide The average accuracy is then calculated as follows spectrometer intensity error sensor error circular field error typel type2 type3 type4 typed 5 total average lumen error 0 5 2 1 6 2 3 4 6 7 9 1 0 2 5 Total average lumen accuracy lt 7 82 45 LightSpion user guide Specifications Physical dimensions Shipping dimensions L x W x H 0 46 x 17 5 x 37 5 cm Shipping weiht 6 Kg Dimensions L x W X H rrrrnrnonnnnnrnnnnennnnnen 43 x 11 5 x 33 5 cm WON EE 5 Kg Sensor CIStANCE ccccccseeseceecceeseeceeeceeaeeeeeeeeaaseeeessuaeeeeess 66 cm Light sources diameter rangde cccceeeseeeeeeeeeeeeeeeees 0 80 mm Light source maximum weight 3 Kg Electrical Power supply Input rrrnrrrerrrnn
14. common to include the R9 measurement as well R9 R15 values can be view in the CRI details window which is opened by clicking on the CRI bar or selecting View gt CRI details CRi details R1 R15 R1 R8 CRI 77 6 93 95 85 84 ee 74 er 76 71 68 S 64 E R1 R6 R7 R R13 R15 According to the colours table above we can see that the red light of R9 is rather low compared to the rest of the values In some cases R9 can even be negative due to particularly low levels of the red light 26 LightSpion user guide CRI information a Example 1 CRI details R1 R15 R1 R8 CRI 99 7 199 100 100 109 109 900 99 co 109 100 109 Ri R2 R 4 RS P HI mm RS MD RII MS RID RIA FiS CRI information e la ES Shows a standard tungsten lamp lts continuous spectrum has the closest resemblance to the Sun therefore the CRI values are the highest Example 2 Shows a Philips LED bulb with a low red R9 value CRI details R1 R 15 R1 R8 CRI 81 6 a S an 88 83 2 me DE 7 m 2 et 1 hi Ei Oc RO RI DD ONO EIS MIT MS BO Ris RA CRI information o 8 5 Example 3 Shows a standard LED bulb with a negative red R9 value due to the lack of red light in the spectrum Example 4 SS E Shows a LED bulb with EEE oe an additional red colour SS boost so that the LED s te R9 value is increased 27 LightSpion user guide CRI details RI R 15 R1 R8 CRI 59 6 K
15. d by Directive 2003 108 EC where applicable Help preserve the environment Ensure that this product is recycled at the end of its lifetime Your supplier can give details of local arrangements for the disposal of Viso products 5 LightSpion user guide Introduction About the LightSpion The LightSpion is a revolutionary new portable lighting measurement device making it possible to measure all aspects of a light source within a few seconds Package contents The LightSpion package contains the following items LightSpion portable measurement system Light Inspector software USB key Viso calibration certification digital certificate E27 goniometer base light holder Light source alignment tool E14 B22 GU10 from E27 socket converters 2m IEC power cord 2m USB cable LightSpion user guide About this document These guidelines describe the installation process of the LightSpion controller followed by the typical measurements of various light sources 7 LightSpion user guide Installation Software installation Before you can start using the LightSpion the Viso Light Inspector software must be installed It is supported on all windows platforms Use the following link to download the latest version http www lightdataserver com software Viso 20Systems Ligh tinspector htm Please make sure the LightSpion is not connected to the computer during software installation Run the msi file and follow
16. earth blue wire to neutral brown wire to live 9 LightSpion user guide Connecting USB The LightSpion is connected to the computer using a USB connector type B A 2m USB cable type A to B is included in the LightSpion case however any USB cable supporting USB2 0 can be used The USB provides communication and power to the LightSpion s main board processor power analyser and photo spectrometer meaning that the photo spectrometer can be used only with the connected USB Start the Viso Light Inspector software after having connected the USB the connection to the LightSpion will be established automatically A successful connection is shown with a green Connected icon in the upper right corner of the Viso Light Inspector software O w You can connect and disconnect the USB without restarting the Viso Light Inspector software as the connection is always established automatically as soon as the USB connector is plugged in and vice versa 10 LightSpion user guide Making measurements Measuring light source bulbs and spots Before making any measurements it is important to align the investigated light source Use the alignment tool located in the front compartment of the LightSpion case and place it in front of the light source Then adjust the height by sliding the lamp holder bracket up and down Turn the lamp holder 90 degrees and set the centre of rotation by Sliding the lamp
17. ency which will perform its own calibration and afterwards issue certification documents To make a custom calibration a calibration source must be used the spectrum of which in a directional point at a certain distance is known Such a spectrum is usually specified as power in uW cm2 nm as shown below 16000 14000 12000 POWER piWicm2 nm j bc EA ep e e Calibration sources can be obtained from a number of suppliers for example a 1000 W incandescent OL FEL C 250 2500 nm spectral irradiance standard lamp from Optronics Laboratories The spectrum of the calibration source is usually provided ma Imp file lamp file NOTE Making a custom calibration does not delete the Viso factory calibration You can always switch between factory and custom calibration at any time 36 LightSpion user guide These steps shows how to make a custom calibration IMPORTANT Calibration must be made in a dark environment with non reflective surfaces 1 Place the calibration lamp at the centre of the rotation motor and make sure it is adjusted to the right height by using the alignment tool 2 Open the Viso Light Inspector software connected to the LightSpion via USB and select Setup gt Spectrometer calibration Then select custom calibration and click on the new button Note The primary factory calibration will not be lost and you can always switch back 3 Select Load lamp fi
18. f L 0 whereas light sources smaller SSES than 35mm will have a positive error and vice versa d F The errors can occur due to differences in sizes of apertures of light fixtures The largest error is then calculated according to the minimum and a maximum aperture sizes 40 LightSpion user guide r Sensitivity span lt 8 5 F ri Light source largest 100mm Fa N N Sensor sensitivit E y curve Max positive error 0 49 Max negative error 2 55 In most cases the maximum error would be smaller than 2 55 as the light radiated from a large aperture would be highest in the centre The inaccuracy of the sensor is rounded off to lt 2 Sensor intensity error lt 2 41 LightSpion user guide Circular field accuracy The LightSpion measures the luminous flux in lumen which accounts for light radiated in all directions Lumen measurement is generally done with the help of an integrating sphere which allows to collect radiated light in all direction into one point The LightSpion uses goniometer technology to obtain this measurement It captures light from one section of the light source and afterwards calculates the complete flux value based on this section as shown below section A is presented in green The principle behind is based on a consideration that the opposite field B is circular see in the pic
19. forward and backward so that the centre of the illumination part of the lamp is aligned with the alignment tool 11 LightSpion user guide When measuring light sources with narrow beam angles is it important to ensure that the light is pointing straight horizontally to make certain that the centre of the beam is scanned at the correct point as shown below x ov After alignment turn the light source back pointing straight towards the optical sensor The different alignment examples are shown below Center of rotation Center hight Light bulb E Se Spot light D Center hight LI al he i LED chip Center hight BE 12 LightSpion user guide Measuring linear lights strips and tubes The LightSpion can also measure linear light sources such as LED strips or tubes To measure a linear light source the light port bracket must be used to ensure that only a fixed portion of the linear light sources is being measured as shown below Linear light holder Light port The light port bracket ensures that only 8cm of the linear light source is captured The actual length of the light source is then inserted into the software after the measuring process is finished Click Edit gt Photometric to insert the real length of the source to E the software The complete light mm output of the linear light sources New lumen value 22 is then calculated Set
20. i Li 73 ar 5 ES 53 an ai Sg 47 3 ae 27 2 nS Ei Ri RZ R3 Re 25 Pe R I Ril Ri2 RIS 1 RIA R Spherical limit Spherical limit allows the user to constrain the area of the luminous flux integration It is also known as measuring luminous flux in a cone Luminous flux measurement is generally done in a full sphere of 360 The new EU regulations EU No 1194 2012 however require the measurement of the directional lamps in a 90 or 120 cone meaning that light illuminated only inside of that cone is WW Wasted Lumens considered for the y sS d calculation of the efficient WW luminous flux Light Inside 90 Cone The spherical limitation can be set by clicking Edit gt Spherical limit spherical limitation does not need to be _ set before a measurement although it can be set afterwards also for the Ge Hea i _ 120 degree previously made full on 360 ee measurements Below is an example of Manual 60 the differences in the flux at 90 cone where 57 Im is considered as a waste outside the 90 cone Light efficiency Light emic Ke jeny C output 258 Im Output 201 Im Li Aal tty Peak 354 cd Light qual Peak 354 cd Power 40W Power PF 0 56 4 0W 0 56 28 LightSpion user guide Attaching pictures You can easily attach pictures to your measurements via dragging and dropping them towards the area of the picture frame lt is also possible
21. ick and add logo LightSpion user guide e e E mer e e M e rv Wi 3347 Sex 3 15 18 47 ege 40816 Nee IK LE EE E 100 Soana annie received Girectly from production part of zero tener to be verified for otection Exporting to PNG All measurements can be exported to a PNG picture file to be used in reports sales and marketing materials To export pick a measurement in your measurement library and then select File gt Export gt PNG Image A typical export is shown below Light efficiency Output 258 Im te mer Peak 354 cd Color temperature Power 4 0 VW PF 056 Beam angle Product name Demo 1 Date and time No 30 juli 2012 09 03 52 item number 190 Price Minimum order quantatity Additional information CIE1931 x 0 427 y 0 403 242 V Power Voltage Current 0 030 A I i This measurement was made using the Aso Systems Light Spion www wisosystems com copyright 2012 33 LightSpion user guide Exporting to CSV Measurements can be exported to a CSV tab separated file so that the measurement data can be imported into Excel or other calculation software for further manipulation To export to CVS click File gt Export gt CSV Tab separated The contents of the CVS file can be seen below Product name Date and 30 juli time 2012 09 03 52 Efficiency CR 257
22. le tO Testen load the calibration source _ 1 ze erence amp spectre and lamp intensity spectrum The system will eg SA automatically calculate the stort cst st meter FEES intensity of the source in ortype in directly above candela based on a lamp file pe at a distance of 0 5m If the measurements are done at a different distance click on the ge O sn re calculate button If you don t Load lamp fie F976N0uWnmem20C Imp know the lamp file distance but ETE we gt 37 LightSpion user guide know the intensity candela value simply insert it directly in the candela box 4 Make sure the calibration source has been running for a certain time to be able to produce stable results 5 Click next and set the integration time to a maximum possible value to ensure the highest resolution therefore the best calibration quality 6 e C ick n ext and tu rn off th e Calibration wizard calibration source or cover the Make dark measurement censor so the background arki spectrum of a dark room can be E O btal n ed D obs nine ae 1250ms 7 Click next the calibration is finished and stored 38 LightSpion user guide Accuracy The accuracy of the LightSpion device consists of the sum of individual accuracies of the comprising parts as follows e Photo spectrometer accuracy e Optical sensor accuracy e Circular field accuracy The accuracies of these devices are described below Photo spectrometer accuracy
23. linear Strip and Tube V Set liniar measuremt For linear light sources of flexible lengths such as LED strips it is also possible to get the light E Measurement of linear light source should be output information specified in jr Calculated lumen 2231 Im lumen per meter or foot Light source length 10 m O Show as lumen per meter O Show as lumen per feet 13 LightSpion user guide The light port bracket should be place in the LightSpion case as shown below to ensure the correct measurement The linear light holder is set and used as shown in the pictures below t Sae velcro straps Et ta hold fixture rentr the light source 14 LightSpion user guide Quality selection It is possible to manually select the measurement quality beforehand in Setup gt Measurement quality The Viso Light Inspector Setup Measurement Help ZN e gt Power Control Auto uses the low resolution by Measurement quality Low me default Yet there are w s E Ile three different levels low z SE medium and high Each quality level increases the number of measurements made during the goniometer operation it also increases the photo spectrometer integration time whilst lowering the noise level of the photo spectrometer measurements Increasing the quality results in substantial measuring time extension 15 LightSpion user guide Fully automatic The
24. n the beam section source A increase the accuracy of the measurement Er small beom ongle Would you like to make a more detailed measurement of the beam section The increase in measurement quality after a detailed re scan of the narrow beam section can be seen below Before a detailed After a detailed auto re scan auto re scan 17 LightSpion user guide Upon completion the main characteristics are calculated and displayed the total luminous flux in lumen the colour rendering index CRI the efficiency in lumen watt the peak light intensity in candela the power and power factor eer Peak 35 0 cd Colour temperature Power 4 0 W mmm PF Aan Further details about the measurement data can be found in the chapter Measurement data Manual power control In some cases it is necessary to control the power of the light source manually For example when measuring flash light on batteries as the LightSpion s power analyser won t be able to turn on and off the light source automatically Another example could be a low voltage light source such as LED chips The external power supply of such chips has low response time when turned on and off therefore it would lead to an inaccurate result of the ambient light level Setup power control To enable the manual power control select Setup gt Power control and select manual power control Automatically tum power on off o Manually tum power on
25. nrrvennnnnn 90 to 260 VAC 50 60 Hz Power consumption rrvnrnnnnvvvnnnnvnnnnnnrvnnnnnnvnnnnnnrnnnnnnsnnnnnnee 15W USB current CONSUMPTION rrrennrrrrnnnnnnnnvvrnrrnnnnnnnnnnennnn 200 mA Power analyser voltage range 30VAC 400VAC lt 0 2V Power analyser current range OA 3A Avg 0 1mA Power analyser power range OW 300W Avg 0 001W Power analyser sample rate n00nnn0010nnn 70 000 samples sec Photometric Flux lumen 10 50 000 7 82 see Lumen accuracy Intensity Candela 0 05 50 000 lt 2 5 Colour temperature cccseceeeeseeeees 1 000K 10 000K lt 35K Colour rendering index ccccceeecceeeeeeeeeeeeeeeeeeees 0 100 lt 0 7 Angular resolution LOW MODE rnrrnnnnnvnnrnnnnnnvnnnnnnnnnenn typ 50 Angular resolution HIGH MODE typ 300 Spectrometer type ccccsessecceecesseeeeeeeeeeeeees STS Ocean Optics Calibration srrnernnnnnnrr Fully calibrated plug and play solution 46 LightSpion user guide RER o es 0 EE Every 2 years Control and interface Control interface rarnrnnnnrnnnnrrvovrnnnnnnovnrnnnnnnvnnnrnnsnnrennnnnn USB 2 0 Control connechor USB B Connections AC power in power supply ss annnsnsennnnnsennnnresennenenne IEC 3 pin AC power out source load rrrnrnnnnvnrnnnnrvvnnnnnnn Universal socket Light Source adaptors ceeseeeeeeeees E27 E14 B22 GU10 PE USB
26. off When the manual power control has been selected the Viso Light Inspector will ask you to manually turn on and off the light source when necessary as shown below 18 LightSpion user guide Manual setup of the integration time In some rare cases it could be desirable to ee the integration time of the photo a spectrometer manually One case could be when measuring a light source emitting most of the light to the sides instead of in the central direction As the automatic setup of the integration time is done in the centre at 0 degrees the integration time would be s high resulting in saturation of the photo spectrometer and leading to an inaccurate measurement Intergration time The integration time of the photo EIGA spectrometer can be set manually 200ms Calibrate to ambient light by selecting Setup gt Integration time Set manually d Set intergration time manually WJ 19 LightSpion user guide Independently running spectrometer The photo spectrometer can also be used to run independenily to test different light sources that might be too large for a complete goniometer measurement or to have a real time update on how the light source behaves over time To start the photo spectrometer independent in operation click on the spectrum scan icon gies During the independent run mode the light intensity output in candela CRI and colour temperature are being continuously
27. to use a webcam to snap pictures of the measured light sources for quick references To use the webcam click on the picture frame to open a picture editor Afterwards click on the start webcam button for the webcam to start and add as many pictures as you like The first picture in the picture editor will be used as the primary one which accompanying the measurement by default Pictures can be moved or deleted by right clicking on each pictures 29 LightSpion user guide Saving measurement Fill in and store all the necessary information about each measurement in the appropriate section as shown in the picture Product name Demo 1 Date and time To save the measurement simply click 30142012 090352 on the save icon or select 3 SO File gt Save as Price 495 Minimum Order Quantity 1000 Save measurement 5 Additional information Bulb measured at factory during inspection Measurement name period Save Measurements are stored in the Measurement library in an alphabetic order Measurements are physically stored in My documents Viso Systems Light Inspector as fixture files The folder can also be opened through rie view setup Measurement Help selecting File gt Open measure folder a i tel Saveas When some files are added of trer f removed it is then necessary to restart Dr the program so the library can be updated 30 LightSpion user guide
28. ture above Most of the light sources and fixtures have nonuniform circular A and B fields In some particular cases the deviation from a circular uniformity of the B field is caused by a physical geometry of the light source A series of test measurements of different types of light sources was made to account for such errors 42 LightSpion user guide 1 A LED bulb with a frosted glass cone Max error 1 6 a For this type of light sources the B e field is almost completely circular and therefore it Minas a small error when measured only using the A field Max error 2 3 D 2 A LED bulb with a du frosted plastic cone The plastic cone exposes the led Thus it has a slightly more deviated distribution of the B field which results in a slightly higher error value 3 Fluorescent bulb with a frosted cone Max error 4 6 The large field of light from a B fluorescent bulb and a nonuniform J LED 4 Fluorescent open bulb NUE A non frosted coned fluorescent bulb exposes the glass tube completely therefore producing an oscillating B field which depends on the number of tubes 5 Incandescent clear glass WWW Mar eror z 102 Old fashioned incandescent bulb gives the largest error due to a non circular tungsten thread 43 LightSpion user guide Luminous flux accuracy The total flux accuracy is
29. uality of power consumption where 1 0 being the best it is generally achieved with a pure resistive load such as a tungsten lamp and 0 0 being the worst For a satisfactory level the PF value should be located between 0 5 1 0 You can refer to the quality chapter in order to figure out the power standards for different countries and regions 5 The efficiency in lumens per watt is calculated by dividing the luminous flux in lumens to the power consumption The result is displayed in the efficiency _bisbtefficiency bar with a corresponding colour where 100 lumen watt it shown as the outmost green The standard maximum value of 100 efficiency is 683 lumen watt en Watt 6 The CRI is calculated using the standard 8 reflectance colours in order to figure out the Veto ability of the light source to transmit colours thus indicating the quality of the radiated light 0 being the worst quality and 100 being the best quality equal to that of the Sun The CRI can only be used for white light If the CRI is not indicated that means that either the radiated light does not meet the criteria for white light or that light levels are too low to be measured 7 The photometric colour temperature indicates the colour of the white light and is displayed in kelvin Where 6000K is considered as cold and 2500K aS coisurtemperature warm The kelvin scale was initially 0 2727K derived from the temperature of the tungsten filament
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