A projector, also known as a projector, is a device that can project images or videos onto the screen. It can be connected to computers, VCDs, DVDs, BDs, game consoles, DVs, etc. through different interfaces to play corresponding video signals. So how should the projector be tested for RoHS?
Projectors are currently widely used in homes, offices, schools, and entertainment venues. According to different working methods, there are different types such as CRT, LCD, and DLP. The technical solutions adopted by mainstream projectors currently on the market are basically divided into digital light processing (DLP) technology and 3LCD technology. The light sources used in the projector include traditional high-intensity gas discharge light sources (such as ultra-high pressure mercury lamps, short arc xenon lamps, metal halide lamps) and new light sources represented by LED light sources and laser light sources.
Traditional light source projectors usually darken and turn yellow as the light emitted by the light source decays after being used for a period of time (such as brightness attenuation, color saturation and contrast reduction, etc.). In use occasions that require high image quality , Even if the light bulb is still glowing, it has to be replaced because of this. Therefore, light decay has become a major obstacle that cannot be surpassed by projectors using traditional light sources.
Current RoHS testing mainly includes the following items: metal material testing: lead (Pb), cadmium (Cd), mercury (Hg), hexavalent chromium (Cr6+); non-metallic material testing: lead (Pb), cadmium (Cd), mercury (Hg), hexavalent chromium (Cr6+), polybrominated biphenyls (PBBs) and polybrominated diphenyl ethers (PBDEs).
RoHS Revision Directive (EU) 2015/863, on the basis of the 6 substances (lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls and polybrominated diphenyl ethers) tested by the original RoHS, 4 phthalates are added In the list of RoHS restricted substances, so far, RoHS's controlled substances have reached 10 items.
With the development of semiconductor lighting technology and laser technology, LED light sources and laser light sources have not only developed rapidly in the lighting field, but also have been widely used in the display field. LED is a product that has long been used in projectors among new light sources. Because LEDs can make the imaging structure of projectors simpler, projector products with smaller size, easy to carry, and simple to use have brought to teaching, business and personal entertainment. Great convenience.
At the same time, as a brand-new projection light source, the emergence of laser solves the defects of projectors that use traditional light sources in brightness attenuation, color, power consumption, etc. At the same time, because it is a cold light source, it has an instant light Features, fundamentally eliminate the need to wait for power on and stable light emission when using traditional light sources.
For ROHS testing, you can contact our company ZRLK. We will provide you with professional and efficient ROHS testing services with favorable prices and good service. If you provide us with product pictures and specifications, we will give us the corresponding cycle, quotation and specific plan according to your product. Welcome to inquire!
