In conventional projectors, it is necessary to separate and combine the light source, change the optical path, optical filter, and use the dichroic mirror. The light source can be separated into RGB three primary colors, processed separately, and then combined and transmitted. When changing the optical path, high-performance reflection is also necessary. These are collectively referred to as micro-projector filters.
The general filters of the micro-projector include: anti-blue through red-green, anti-red through blue-green, anti-red and anti-green through blue, and reflector.
Anti-blue transparent red-green filter:
S1: incidence angle 45 degrees
420~ 470nm@T <1% 471~ 480nm@T <10%
495~504nm@>94% 505~ 565nm@T >97%
605~ 680nm@T >97% 505~ 680nmTave@T >97%
Tmin>96.5%
S2: 45 ° incidence angle
R<1%@420~680nm
Anti-red blue-green filter:
S1: incidence angle 45 degrees
605~ 680nm@T <1%
500~ 585nm@T >97%
430~ 480nm@T >97%
S2: 45 ° incidence angle
R<1%@420~680nm
Anti-red anti-green blue filter:
S1: incidence angle 45 degrees
420~ 480nm@T >97%
500~ 680nm@T <1%
S2: 45 ° incidence angle
R<2%@420~680nm
reflector:
420~ 680nm@R >98%
