Double lens type projection display device


Application Number  00128310 Application Date  2000.11.10
Publication Number  1352404 Publication Date  2002.06.05
Priority Information    
International
Classification
 G02B5/04;G02B5/30;G02B27/18  
Applicant(s) Name  Dayi Science and Technology Co., Ltd.  
Address    
Inventor(s) Name  Zhuang Fuming  
Patent Agency Code  31100 Patent Agent  hu xiaoping
AbstractIn a double-lens type projecting display device, white light is separated by a spectroscope into the first and the second color light beam to the first polarizing selector and the third color light beam to a reflector; the first color light beam is changed in polarity in the first polarizing selector; the first and the second color light beams are projected by a first polarized light splitting prism to two light valves for modulation, the first color light beam is further changed in the polarity in a second polarizing selector before projected by a first lens; the third color light beam is reflected by a reflector and projected via a second polarized light splitting lens to another light valve for modulation before projected by the second lens; and thus the first color light beam and the second color light beam from the first lens are overlapped.