One, CRT demonstrates a skill
Seventies, as a result of the requirement that kinescope cinema uses, umbriferous indication technology also begins to appear subsequently, and got rapid development, 1974, CRT (Cathode Ray Tube) projector begins to appear in the market, inchoate CRT projector basically applies at registering the video signal such as photo show. What use a field as projector is ceaseless and patulous, it once developed post and telecommunications, traffic, bank, military affairs, education to wait for each each industry, applied domain has supervisory system, public information to release, 3D imitate shows, conference system. Show technical projector to CRT, it discloses input signal source R (red) , G (green) B (blue) on the fluorescent screen that 3 CRT provide, fluorescent material gives off light below high-pressured action systematic enlarge, assemble, chromatic picture is shown on big screen. Optical system and CRT canal comprise projection cathode-ray tube, the 3 guns projector that says normally is the projector that comprises by 3 projection cathode-ray tube, because use inside illuminant, also cry active umbriferous means. CRT technology is mature, indication image color is rich, reproducibility is good, have rich geometry lack fidelity adjust ability; But its are important resolution of technical index picture and brightness are restricted each other, affect the brightness value of CRT projector directly, so far, its brightness value wanders in 300lm from beginning to end the following. CRT projector operation is additionally complex, especially assemble is adjusted trival, airframe volume is large, and the price is high, suit to install only at ambient light relatively weaker, fixed place, unfavorable move, exit the market already basically at present.
Article navigation:
- One, CRT demonstrates a skill
- 2, LCD demonstrates a skill
- 3, DLP demonstrates a skill
- 4, LCOS demonstrates a skill
- 5, GLV demonstrates a skill
- 6, LCD (LCOS, PLCD) the comparison of technology and DLP technology