• ISO17025 is the international standard for laboratory accreditation services; the latest version is released in May, 2005. The full name of ISO/IEC17025:2005-5-15 is Accreditation Criteria for the Competence of Testing and Calibration Laboratories. ISO17025 standard is the laboratory management standard formulated by the international Standardization Organization ISO/CASCO (Conformity Assessment Committee). Internationally the organization that manages laboratory accreditation is International Laboratory Accreditation Cooperation (ILAC), attended by 44 laboratory accreditation institute including…

  • Light environment is one of the indispensable and important physical environmental factors for plant growth and development. LED plant lighting lamp is a kind of artificial light source to meet plant photosynthesis light conditions. In the absence of sunlight, lamp can act as daylight. Plant growth lights play the function of environmental protection and energy conservation. LED plant lights provide photosynthesis light conditions, promote plant growth, short the time of…

  • LED adopts metal material, however, OLED uses organic material. Their emitting principles are the same, the difference is that OLED does not need backlight, because it is composed of light-emitting diode array and it can emitting itself. It is brighter and thinner than LED LCD display, and it will become an alternate of LED LCD display in the future. LED LCD display needs backlight. Its brightness is common, and displays…

  • During electromagnetic radiation test, three loop antennas are often used. Lisun three loop antenna VVLA-30M is a standard measurement antenna according to CISPR15-2005. It can coordinate Lisun EMI-9KB or EMI-9KA EMI Receiver System for EUT magnetic field radiation test measurement between X, Y and Z planes. VVLS-30M is a big antenna with 2m diameter, which is used for testing frequency below 30MHZ radiation electromagnetic field, frequency range is 9 KHz~30MHz….

  • With LED technology development, LED applications in market are more and more wide. UV-C LED germicidal disinfection applications market also reaches a new height in 2016, prospects are bright. With more and more LED companies launch new products, UV-C LED technology will also develop faster. Wavelength of 200~280nm UV part is called UV-C region; this region UV wavelength is short and has high energy. UV-C wavelength light has a great…

  • Definition of RF LED lights: RF LED light is emitting diode by converting the RF energy into light energy. LED lights are not always RF LED lights, for example, if the maximum working frequency of LED light is less than 9kHz, such as light with non-light source or directly supplied by DC power source (no drive power module), then it is not regarded as RF LED light. RF LED lights…

  • In recent years, many manufacturers are planning to manufacture common global LED drive products with a wide voltage input. But since different countries have different product standards, it results in some difficulties and obstacles in the design and production. This article compares and analyzes the differences of LED driver design and test safety standards between the North American ANSI / UL 8750 standard, and European EN 61347-2-13 (to be used…

  • IES LM-79-08 Approved Method: Electrical and Photometric Measurements of Solid-State Lighting Products. IES LM-79 standard is mainly for photoelectric performance measurement. Generally it is for whole lamp. Main measurement parameters as follow: Electrical Measurement: Voltage, Current, Power and Power Factor. Colorimetric Measurement: CCT, CRI and Chromaticity Coordinates Photometric Measurement: Luminous Flux and Luminous Efficiency Integrating Sphere System can measure upper parameters, but integrating sphere system cannot measure luminous intensity distribution….

  • 1. The allowable tolerance range of standard light source calibration and retest results is as follows: X, Y Chromaticity Coordinates: ±0.0008 Color Temperature: ±10K Luminous Flux: ±5‰ 2. The allowable tolerance range of contrast light source/ luminaires retest results as follows: X, Y Chromaticity Coordinates: ±0.0050 High Color Temperature: ±150K Low Color Temperature: ±100K Luminous Flux: ±3% Description: The contrast light source means to checking whether the tested light source…

  • LVD’s goal is to ensure the safety usage of low-voltage equipment. Its range of application is on electrical products with voltage at 50V to 1000V AC and 75V to 1500V DC, including all the safety rules of this equipment, and protection against hazards caused by mechanical. The design and construction of the apparatus shall ensure or as its intended usage that it is not dangerous when used under normal operating…

  • IEC 61000-4-5 is part of the IEC 61000 series, which describes surge immunity testing caused by over-voltages from switching and lightning transients. The second edition of IEC 61000-4-5 was released in 2005 and has been in use for many years. The third edition was released as an EN standard in 2014. The general philosophy of the third edition is unchanged from the second edition. However there have been a number of refinements…

  • LED street lights become more and more popular in recent years, but a few days ago, the American Medical Association (AMA) just issued an official statement, warning that if the LED lights are too white and bright, it will release a large amount of blue light and expose to people directly, which would not only increase the probability of an accident because of the glare while driving, but also affect…