Head up display with incident light filter

Details Head up display with incident light filter Head up display with incident light filter

1995-06-07

1996-01-23

Weldon, Ulysses

Computer graphics processing and selective visual display system

Image superposition by optical means

359630, 359 13, G09G 500

Patent

active

054868408

ABSTRACT:
Glare and spurious reflections of external light on the image source of a head up display are eliminated by a circular polarizer in the optical path of the display. The head up display includes a mirror system for projecting a pattern from the image source onto a vehicle windshield where it is reflected to the operator, wherein polarization is effected at the windshield reflection. The circular polarizer includes a linear polarizer and a quarter wave plate arranged to extinguish the external incident light after reflection from the image source. The linear polarizer axis is aligned with the polarization axis at the windshield to optimize the brightness of the display.

REFERENCES:
patent: 4961625 (1990-10-01), Wood et al.
patent: 5044709 (1991-09-01), Smith et al.
patent: 5231379 (1993-07-01), Wood et al.
patent: 5237455 (1993-08-01), Bordo et al.

Affiliated with

Also associated with

Rating

Head up display with incident light filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Head up display with incident light filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Head up display with incident light filter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1507793