Direct-view display apparatus

Details Direct-view display apparatus Direct-view display apparatus

1993-11-16

1996-10-01

Fahmy, Wael

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 41, 359 48, 359377, G02F 11335, G02B 2122

Patent

active

055615384

ABSTRACT:
A direct-view display apparatus provides improved image quality by preventing the formation of a stripe pattern caused by parallax effects. A liquid-crystal panel for active matrix driving is disposed. A microlens array consisting of a plurality of microlenses formed in corresponding relationship to each pixel in the liquid-crystal panel is placed on a surface of a substrate of the liquid-crystal panel. A field lens and an eyepiece are disposed in this order between the microlens array and an observer. The field lens serves to converge the principal rays emerging from the microlens array in parallel with an optical axis onto the eyepiece, so that a moire pattern caused by parallax effects can be prevented from being formed and the image quality can thus be improved. Light from backlights are passed through display panels, respectively consisting of liquid-crystal cells, microlens arrays, and field lenses, and are superimposed by a crossed dichroic prism. The observer views the light superimposed by the crossed dichroic prism, i.e. a color image, through an eyepiece.

REFERENCES:
patent: 4575722 (1986-05-01), Anderson
patent: 4732456 (1988-03-01), Fergason et al.
patent: 4761056 (1988-08-01), Evans et al.
patent: 4790632 (1988-12-01), Miyakawa et al.
patent: 5052783 (1991-10-01), Hamada

Affiliated with

Also associated with

Rating

Direct-view display apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Direct-view display apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Direct-view display apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1506245