Luminaires are a general term for lighting tools, including chandeliers, desk lamps, wall lamps, floor lamps, etc. Refers to appliances that can transmit, distribute, and change the light distribution of a light source, including all necessary components for fixing and protecting the light source, as well as necessary wiring accessories for connecting to the power supply, except for the light source. Dear friends who make lighting products, whether they are light sources or lighting fixtures, I believe they have heard of testing projects such as LM79, LM80, LM82, LM84, and even TM21. These require corresponding test reports when we apply for many energy efficiency certification projects. Today, I will briefly introduce the basic content of these projects to you. 1、 LM79LM79 specifies the testing methods for the total optical flux, electrical power, light intensity distribution, color parameters, color uniformity, and other parameters of SSL products. This standard includes SSL products for LED and integral LED lights (requiring only AC or DC drive). This standard does not include SSL products (LED chips, LED packaging, LED modules, etc.) that require external driver circuits or external heat sinks. SSL is different from traditional filament white light emitting and gas discharge light emitting principles. It is composed of electronic light emitted by semiconductors, including LED, OLED, Laser Diode (LD), and light emitting polymers. Generally speaking, testing can be divided into integrating sphere testing and distribution photometer testing: integrating sphere testing: voltage, current, power, color temperature, color rendering index, spectral distribution. Distribution photometer testing: voltage, current, power, total luminous flux, light intensity distribution For LM79, the integration sphere test does not measure light flux, otherwise it requires very complex steps such as auxiliary lights. 2、 LM80LM80 refers to the measurement of a light source, and "light source" only refers to packaging, arrays, and modules. The key points are as follows: a. The aging process should be separated from the testing process, and the temperature of Tc point should be strictly controlled to 55 degrees, 85 degrees, or the temperature specified by the supplier during the aging process. After aging to the specified testing interval, restore to the testing environment for photometric testing. b. It is required to test the luminous flux and color parameters, but the specific testing method is not strictly specified. The following are the original words in the standard: Photometric measurements shall be in compliance with the appropriate laboratory method for the LED light source under test c. There are high requirements for environmental control, temperature control of Tc, and power supply equipment. d. There are detailed requirements for tracking and recording samples and aging processes. 3、 LM82LM82 is a successor standard to LM79, which specifies the electrical and optical testing of LED light engines (I think it can be considered SSL) and integrated LED lights at different temperatures after temperature rise. The main focus is as follows: a. The temperature monitoring point Tb and the temperature monitoring point Td of the power supply need to be provided for the sample to be tested (not mandatory). b. Initial testing - Conduct power, luminous flux, and color parameters tests at an ambient temperature of 25 ± 1 ℃ in accordance with Section 9 of LM79, and monitor the Tb value at this time, denoted as Tbi. c. Calibration testing - By adjusting the ambient temperature to bring Tb to the initial testing ambient temperature (25 ± 1 ℃), then conducting power, luminous flux, and color parameter tests, and monitoring and recording the Tb value at this time, denoted as Tb0. d. The first temperature rise test - Adjust the ambient temperature to reach Tb0+25 ℃, then conduct power, luminous flux, and color parameter tests, and monitor and record the Tb value at this time, denoted as Tb1. e. The second temperature rise test - Adjust the ambient temperature to reach Tb0+50 ℃, then conduct power, luminous flux, and color parameter tests, and monitor and record the Tb value at this time, denoted as Tb2. f. Obtain the photometric characteristics after increasing the temperature according to the standard processing method for the above measured data. g. The standard suggests using a temperature controlled integrating sphere for temperature control, while other methods must ensure that the temperature at Tb point is well controlled and does not affect photometric testing. Author: Mr. Li, Testing and Certification https://www.bilibili.com/read/cv10659278/ Source: Bilibili