公开(公告)号：JPH08271855A

公开(公告)日：1996-10-18

申请号：JP4709896

申请日：1996-03-05

Applicant: IBM

Inventor： DOANY FUAD ELIAS ,  DOVE DEREK BRIAN ,  SINGH RAMA NAND ,  ROSENBLUTH ALAN EDWARD ,  CHIU GEORGE L ,  CIPOLLA THOMAS MARIO ,  WILCZYNSKI JANUSZ STANISLAW

IPC: G02F1/13 ,  G02F1/1335 ,  G03B21/00 ,  H04N5/74 ,  H04N9/31

Abstract: PROBLEM TO BE SOLVED: To provide an efficient and compact optical system for full color high resolution projection type display using a reflective double-refracting spatial light modulator such as a liquid crystal light valve. SOLUTION: This optical system is provided with reflective double-refracting light valves 26-28, a polarized beam splitter 22, color image coupling prisms 30-32, a lighting system 18, a projection lens 38, color/contrast control filters 43-46 and a screen 39 arranged in constitution to provide an advantage of high resolution color display. This optical system is provided with a quarter wavelength plate 48 arranged to suppress stray reflection from the projection lens 38. This optical system is also provided with a second quarter wavelength plate 50 arranged at the screen 39, and a polarizing film 52 arranged at the second quarter wavelength plate 50 so as to restrain the light in the surroundings from illuminating the screen 39 and entering the optical system.

公开(公告)号：DE69611560T2

公开(公告)日：2001-06-21

申请号：DE69611560

申请日：1996-02-13

Applicant: IBM

Inventor： CHIU GEORGE LIANG-TAI ,  CIPOLLA THOMAS MARIO ,  DOANY FUAD ELIAS ,  DOVE DEREK BRIAN ,  ROSENBLUTH ALAN EDWARD ,  SINGH RAMA NAND ,  WILCZYNSKI JANUSZ STANISLAW

IPC: G02F1/13 ,  G02F1/1335 ,  H04N5/74 ,  H04N9/31

Abstract: An optical system is described consisting of reflection birefringent light valves, polarizing beam splitter, color image combining prisms, illumination system, projection lens, filters for color and contrast control, and screen placed in a configuration offering advantages for a high resolution color display. In particular, the present invention includes a color splitting prism assembly having a plurality of output faces through which a separate color component is directed to be reflected by a respective light valve. Color absorbing filters are disposed at each of the output faces to absorb the color components not corresponding to the color directed through each output face.

公开(公告)号：DE3854211T2

公开(公告)日：1996-02-29

申请号：DE3854211

申请日：1988-05-10

Applicant: IBM

Inventor： LIN BURN JENG ,  MORUZZI ANNE MARIE ,  ROSENBLUTH ALAN EDWARD

IPC: G03F1/00 ,  G03F7/20 ,  H01L21/027

公开(公告)号：DE69611560D1

公开(公告)日：2001-02-22

申请号：DE69611560

申请日：1996-02-13

Applicant: IBM

Inventor： CHIU GEORGE LIANG-TAI ,  CIPOLLA THOMAS MARIO ,  DOANY FUAD ELIAS ,  DOVE DEREK BRIAN ,  ROSENBLUTH ALAN EDWARD ,  SINGH RAMA NAND ,  WILCZYNSKI JANUSZ STANISLAW

IPC: G02F1/13 ,  G02F1/1335 ,  H04N5/74 ,  H04N9/31

Abstract: An optical system is described consisting of reflection birefringent light valves, polarizing beam splitter, color image combining prisms, illumination system, projection lens, filters for color and contrast control, and screen placed in a configuration offering advantages for a high resolution color display. In particular, the present invention includes a color splitting prism assembly having a plurality of output faces through which a separate color component is directed to be reflected by a respective light valve. Color absorbing filters are disposed at each of the output faces to absorb the color components not corresponding to the color directed through each output face.

公开(公告)号：DE3854211D1

公开(公告)日：1995-08-31

申请号：DE3854211

申请日：1988-05-10

Applicant: IBM

Inventor： LIN BURN JENG ,  MORUZZI ANNE MARIE ,  ROSENBLUTH ALAN EDWARD

IPC: G03F1/00 ,  G03F7/20 ,  H01L21/027