Displays having improved contrast

Details Displays having improved contrast Displays having improved contrast

1990-04-05

1991-12-24

Hille, Rolf

Optical: systems and elements

Prism

With reflecting surface

359 59, 359 48, 359 70, 359 97, 353121, 353122, G02F 113

Patent

active

050757890

ABSTRACT:
A display presenting an image having enhanced contrast has a screen which switches between a bright, image-presenting state and a dark, image-less state, to minimize glare from ambient light reflections. Alternatively, a shutter which switches between a substantially transparent state and a dark, light absorbing state is placed over a conventional screen.

REFERENCES:
patent: 4299447 (1981-11-01), Soltan et al.
patent: 4601537 (1986-07-01), Saccocio
patent: 4652087 (1987-03-01), Bos et al.
patent: 4693560 (1987-09-01), Wiley

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