Color difference SDCM

Color difference SDCM

Color difference is an important indicator of CFL color performance. Color difference is the difference between computer calculation forma and the target standard, calculated by single lighting source, the value is smaller, accuracy is higher. Please note, it only represents the compared color of a light source, it can not detect the deviation under different light sources. Generally speaking, color difference refers to the distance that the measurement value deviates from the target value, the difference between the light source spectrum and the standard spectrum. It needs provide the target value and calculation formula to know the measurement value of color difference.

Standard spectrum changes with color temperature, the color difference is different for the same light source if the standard spectrum is different, but when test, general color photoelectric analysis system can automatically identify the color temperature range where the measured light source is, to determine the color temperature value of standard spectrum. When the color temperature is same, reference standard spectrum is consistent, chromaticity coordinate X,Y is different, the color difference is also different.

Color difference unit: SDCM. National standard has its specific testing requirement, GB-T17262-2002 single-ended fluorescent lamp performance requirements specified in the standard that general energy-saving lamps require color tolerance less than 5 SDCM. GB24823-2009 general lighting for LED modules performance requirements specified in the standard that LED modules require color difference less than 7SDCM. In the ellipse of 5SDCM, color difference is 5 if the point is on the curve of ellipse, color difference is less than 5 if the coordinates is in the circle of ellipse. IEC standard requires that the lamp chromaticity coordinate(x,y) should not deviate the rated value from 5SDCM, that is to say, the chromaticity coordinate of lamp should be in the ellipse, the color difference should be less than 5 SDCM for general energy-saving lamps. For color difference ellipse diagram, outer ring is 6SDCM corresponding to the national standard, inner ring is 5SDCM corresponding to international standard. Industry standard, Energy Star ANSI C78.376, Color Difference≤7SDCM; EU Standard IEC60081, Color Difference≤7SDCM; National Standard GB10682-2002, Color Difference≤5SDCM.

In the fluorescent lamp, as the density of red, green and blue powder is different, it is easy to cause color temperature difference in production. Once appear, it needs adjust color difference to adjust color temperature difference to ensure light color of light. White LED as light source, it should refer to color difference standard requirement to guide the development and application of white LED new lighting source. Lisun pushes LPCE-2(LMS-9000A) integrating sphere & spectroradiometer system and CHROMA-2 Pocket Chroma Meter to test color difference.

[caption id="attachment_10225" align="alignnone" width="800"] Color difference SDCM-1[/caption]

[caption id="attachment_10226" align="alignnone" width="800"] Color difference SDCM-2[/caption]

Lisun Group’s LPCE-2(LMS-9000A) integrating sphere & spectroradiometer system and CHROMA-2 Pocket Chroma Meter are widely applied to Luminaries manufacturing enterprise and lab, such as Sharp Electronics in Memphis TN(USA), PT. SHARP SEMICONDUCTOR INDONESIA (Indonesia), TUV Rheinland InterCert Kft.( Hungary), Philips Lighting(Netherlands), Sony Semiconductor Corporation etc. The reason why Lisun can win some many customers is because we always practice the motto of right products, right price and right service. Lisun will continue feedback good quality products and superior service in the feature.

Color difference SDCM

Color difference SDCM 

Color difference is an important indicator of CFL color performance. Color difference is the difference between computer calculation forma and the target standard, calculated by single lighting source, the value is smaller, accuracy is higher. Please note, it only represents the compared color of a light source, it can not detect the deviation under different light sources. Generally speaking, color difference refers to the distance that the measurement value deviates from the target value, the difference between the light source spectrum and the standard spectrum. It needs provide the target value and calculation formula to know the measurement value of color difference.

Standard spectrum changes with color temperature, the color difference is different for the same light source if the standard spectrum is different, but when test, general color photoelectric analysis system can automatically identify the color temperature range where the measured light source is, to determine the color temperature value of standard spectrum. When the color temperature is same, reference standard spectrum is consistent, chromaticity coordinate X,Y is different, the color difference is also different.

Color difference unit: SDCM. National standard has its specific testing requirement, GB-T17262-2002 single-ended fluorescent lamp performance requirements specified in the standard that general energy-saving lamps require color tolerance less than 5 SDCM. GB24823-2009 general lighting for LED modules performance requirements specified in the standard that LED modules require color difference less than 7SDCM. In the ellipse of 5SDCM, color difference is 5 if the point is on the curve of ellipse, color difference is less than 5 if the coordinates is in the circle of ellipse. IEC standard requires that the lamp chromaticity coordinate(x,y) should not deviate the rated value from 5SDCM, that is to say, the chromaticity coordinate of lamp should be in the ellipse, the color difference should be less than 5 SDCM for general energy-saving lamps. For color difference ellipse diagram, outer ring is 6SDCM corresponding to the national standard, inner ring is 5SDCM corresponding to international standard. Industry standard, Energy Star ANSI C78.376, Color Difference≤7SDCM; EU Standard IEC60081, Color Difference≤7SDCM; National Standard GB10682-2002, Color Difference≤5SDCM.

In the fluorescent lamp, as the density of red, green and blue powder is different, it is easy to cause color temperature difference in production. Once appear, it needs adjust color difference to adjust color temperature difference to ensure light color of light. White LED as light source, it should refer to color difference standard requirement to guide the development and application of white LED new lighting source. Lisun pushes LPCE-2(LMS-9000A) integrating sphere & spectroradiometer system and CHROMA-2 Pocket Chroma Meter to test color difference.

[caption id="attachment_10225" align="alignnone" width="800"] Color difference SDCM-1[/caption]

[caption id="attachment_10226" align="alignnone" width="800"] Color difference SDCM-2[/caption]

Lisun Group’s LPCE-2(LMS-9000A) integrating sphere & spectroradiometer system and CHROMA-2 Pocket Chroma Meter are widely applied to Luminaries manufacturing enterprise and lab, such as Sharp Electronics in Memphis TN(USA), PT. SHARP SEMICONDUCTOR INDONESIA (Indonesia), TUV Rheinland InterCert Kft.( Hungary), Philips Lighting(Netherlands), Sony Semiconductor Corporation etc. The reason why Lisun can win some many customers is because we always practice the motto of right products, right price and right service. Lisun will continue feedback good quality products and superior service in the feature.

LMS-6000 Portable CCD Spectroradiometer to Test Lumen?

With the rapid development of LED lighting market, the competition becomes more and more intense. So more and more LED lighting manufacturers began to focus on the quality of their products in order to gain a greater share in the market. Thus, LED lighting test instruments became the indispensable equipment. On the LED test equipment, there are goniophotometer, integrating sphere, spectroradiometer, LED driver power tester, EMI & EMC test equipment, and IP waterproof, dustproof environmental test chamber and so on. And goniophotometer, integrating sphere and spectroradiometer is the most common and also basic equipment, mainly used to test the LED luminaires photometric, colorimetric and electrical performance, such as lumen (luminous flux), luminous intensity distribution, luminous efficiency, correlated color temperature, color rendering index, voltage, power and other basic parameters. However, due to the price of these equipment is not cheap and it requires a certain size of the laboratory, many small and medium-sized manufacturers or companies that started LED industry turned to seek portable test equipment, such as LMS-6000 Portable CCD Spectroradiometer. There are various kinds of portable spectroradiometers on the market, with elegant appearance and built-in high resolution LCD display, and even can be as smart as the phone. But is it really capable of testing lumens?
Many portable spectroradiometers claim to be able to test the lumen value of LED lamps. However, according to the standard IES LM-79-08 Electrical and Photometric Measurements of Solid-State Lighting Products, in Section 9.0, it states that the total luminous flux (lumen) of the SSL product should be measured using an integrating sphere system or goniophotometer. As for which method to use, depending on the size and shape of SSL products, and whether needs to measure other parameters such as color, luminous intensity distribution and so on. In general, the integrating sphere system is suitable for testing integrated LED lamps and relatively small LED luminaires (refer to Section 9.1.2 about the method for measuring the size of SSL products measured with the specified size of the integrating sphere) total luminous flux and colorimetry. The integrating sphere system has the advantage of fast measurement and no darkroom, and the result of the total luminous flux is a relative value because the final measurement result is calculated by comparison with the reference standard. Goniophotometer is usually used to measure luminous intensity distribution, and then resulting total luminous flux, thus it is an absolute value, and the measurement results are more accurate. It can measure the total luminous flux of not only small SSL products but also relatively large (as opposed to traditional fluorescent lighting) SSL products. Goniophotometer needs to be installed in the usual temperature control of the darkroom, to avoid the measured light source to absorb heat and other stray lights’ reflection to affect the measurement results.
Therefore, theoretically using a LMS-6000 Portable CCD Spectroradiometer to test lumen is not feasible, because the lack of the corresponding test environment, the measurement results will be a great error. In order to fulfill customers’ requirement of testing luminous flux (lumens) with limited budget, Lisun developed an economical compact integrating sphere spectroradiometer system, to provide customers with the best solution. The LPCE-3CCD Spectroradiometer Integrating Sphere Compact System integrates the equipment and cabinet into ALL-IN-ONE, so there’s no need to install, and it is more convenient and easy to operate. Also it saves a lot of space. The sphere can be dismantled into two parts, which is easier for transportation, especially at offices or laboratories with smaller door sizes. In addition, this integrating sphere comes with a removable test holder base inside, and it can withstand 20kg weight. Also, it can install and replace different light fixtures for measurement according to different types of light sources, which is very simple and convenient, please refer to the following figures.

[caption id="attachment_10207" align="alignnone" width="800"] LPCE-3CCD Spectroradiometer Integrating Sphere Compact System[/caption]

[caption id="attachment_10209" align="alignnone" width="800"] LPCE-3CCD Spectroradiometer Integrating Sphere Compact System[/caption]

[caption id="attachment_10208" align="alignnone" width="800"] LPCE-3CCD Spectroradiometer Integrating Sphere Compact System[/caption]

3M Integrating Sphere Test Results Comparison

Lisun engineers visited Barcelona recently, this visit was mainly to install the 3m Integrating Sphere Test System for the customer and provide training service.

This customer compared the test results of Lisun’s 3m Integrating Sphere Test System with the test results of Holophane(HEL) and LIA Laboratories. This customer provided 4 samples to the third lab. Compared with LIA Laboratories, our tolerance are controlled within 5%:

HAL – LED Highbay: 4.6%

VMX LED Luminarie: 2.3%

Corn Lamp: 2.5%

Platek – Target Medium Prioette LED Luminaries: 0.5%

[caption id="attachment_10185" align="alignnone" width="619"] The test report of Platek tested by Lisun 3m Integrating Sphere Test System[/caption]

[caption id="attachment_10186" align="alignnone" width="449"] The test report of Platek tested by LIA Laboratories-1[/caption]

[caption id="attachment_10187" align="alignnone" width="449"] The test report of Platek tested by LIA Laboratories-2[/caption]

 

Space Color Distribution Measurement

Space Color Distribution Measurement

 

Use Integrating Sphere Spectroradiometer System to test color parameters for light source and luminaries and use Goniophotometer System to test luminous intensity, which is the measurement for traditional light source and measurement.

 

Compare with traditional light source, the optoelectronic properties of LED light source are more complex, traditional light source measurement methods and instruments are unable to fully meet the needs of the market. With the development of technology, new light source has uneven spatial distribution, the international pays high attention to light source and luminaries color spatial distribution measurement recently. More and more lighting manufacturers have to measure the spatial distribution of color parameters.

 

Lisun LSG-1800BCCD/LSG-1700BCCD/LSG-1600BCCD High Precision Goniospectroradiometer is based on LSG-1800B/LSG-1700B/LSG-1600B with a high precision CCD spectroradiometer to test spatial CCT distribution.

 

LSG-1800BCCD/LSG-1700BCCD/LSG-1600BCCD is used to test the photometric parameters for LED roadway luminaries, indoor luminaries and flood lights in industry laboratory, such as spatial intensity distribution curve, spatial iso-intensity curve, intensity distribution curve on each section (represent by right-angled coordinates or polar coordinates, luminance limitation curve, luminaire efficiency, glare grade, effective beam angle, upward luminous flux ratio, downward luminous flux ratio, total luminous flux, effective luminous flux, utilization factor and electric parameters voltage, current, wattage, power factor and etc. It can also test spatial CCT distribution. The test result can be exported as IES, LDT, CIE etc format files, which can be used in lighting design software such as DIALUX.

 

We finished another customer’s Installation & training in Turkey

This is a big lighting company in Turkey. They purchase a set of LSG-1800BCCD High Precision Rotation Luminaire Goniospectroradiometer Rotation Luminaire Goniospectroradiometer, EMI-9KA EMI Receiver System and LMS-6000 Portable CCD Spectroradiometer from LISUN this time. They are satisfied with our service and said there would be other projects in the near future.

Below is photos of the installation & training:

[caption id="attachment_10165" align="alignnone" width="800"] Customer, LISUN engineer and the LSG-1800BCCD High Precision Rotation Luminaire Goniospectroradiometer[/caption]

[caption id="attachment_10166" align="alignnone" width="800"] Customer, LISUN engineer and the LSG-1800BCCD High Precision Rotation Luminaire Goniospectroradiometer[/caption]

[caption id="attachment_10167" align="alignnone" width="800"] Customer, LISUN engineer and the EMI-9KA EMI Receiver System[/caption]

Our main products are Goniophotometer, Spectroradiometer, Integrating Sphere, LED Test Instruments, CFL Test Instruments, Photometer and Colorimeter, EMC & EMI Testing,Electronic Ballast Tester, Electrical Safety Testing, Environmental Test Chamber, Plug and Switch Testing, AC and DC Power Supply and etc. Lisun Group wins thousands of customers’ trust with motto “Right Product, Right Price and Right Service”. Please learn more products here: http://www.lisungroup.com/article-id-47.html

 

Brazil Installation and Training Service in May, 2018

Lisun engineer visited Brazil in May, 2018. This Brazil trip is mainly to visit our customer LABORATORIOS BRUCH LTDA . This customer is a research and development company, they are developing the lighting market in Brazil.

They bought many LED Test Instruments this time.

[caption id="attachment_10153" align="alignnone" width="800"] LSG-1700B High Precision Rotation Luminaries Goniophotometer[/caption]

[caption id="attachment_10154" align="alignnone" width="800"] LPCE-2(LMS-9000B) High Precision Spectroradiometer Integrating Sphere Test System[/caption]

[caption id="attachment_10156" align="alignnone" width="800"] KH3962 EMI Test System(Lisun New Model is EMI-9KB)[/caption]

Lisun will provide more after sales installation and training service to our customers and return the love to our customers with the most reasonable price and the best quality service.