Display apparatus

Details Display apparatus Display apparatus

1989-06-01

1992-02-18

Arnold, Bruce Y.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359566, 359569, 359634, G02B 2714

Patent

active

050899031

ABSTRACT:
A display apparatus comprises a display, a first diffraction grating for diffracting light from the display, and a second diffraction grating for diffracting diffracted light from the first diffraction grating, so that a half-width of the first diffraction grating is set to be larger than that of the second diffraction grating.

REFERENCES:
patent: 3580655 (1971-05-01), Leith et al.
patent: 4201441 (1990-05-01), Matsumoto et al.
patent: 4330211 (1982-05-01), Peterson et al.
patent: 4490021 (1984-12-01), Moya
patent: 4613200 (1986-09-01), Hartman
patent: 4688879 (1987-08-01), Fairchild
patent: 4763990 (1988-08-01), Wood
patent: 4823427 (1989-05-01), Nanbe et al.
"Backside Diffraction by Relief Gratings," E. Popov, L. Mashev, Optics Communications, vol. 65, No. 2, Jan. 15, 1988, (pp. 97-100).
"Low Dispersion Holographic Mirrors with Very High Diffraction Efficienty", J. Jannson et al., Optical Soc. of America, Abstr. WK8, 1989 Ann. Mtg., p. 1257.
Japanese Abstract, vol. 11, No. 142, Appl. No 60-121154.

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