Optical: systems and elements – Diffraction – From grating
Patent
1997-05-27
1998-05-19
Henry, Jon W.
Optical: systems and elements
Diffraction
From grating
357575, 348382, G02B 518, H04N 572
Patent
active
057543429
ABSTRACT:
A two-dimensional diffraction grating (5, 14) has a plurality of grating elements arranged in two directions (X, Y) different from each other. The grating elements in one of the directions (X, Y) have a substantially uniform grating height (h) when viewed in an arbitrarily chosen section along such one of the directions (X, Y) and, also, the grating elements in the other of the directions (X, Y) have a substantially uniform grating height (h) when viewed in an arbitrarily chosen section along the other of the directions (X, Y). An image display device includes an image display unit (4) including a plurality of pixels (10) patterned in a dot matrix in two dimensions and having a path (2) of travel of imagewise rays of light, and the two-dimensional diffraction grating (5) disposed on the path (2) of travel of the imagewise rays of light leading from the image display unit (4). An imaging device also includes the two-dimensional diffraction grating (14) disposed between a phototaking lens (12) and a solid-state imaging element (11).
REFERENCES:
patent: 3470310 (1969-09-01), Shashoua
patent: 3641255 (1972-02-01), Macovski
patent: 3728014 (1973-04-01), Rosenblum
patent: 3914761 (1975-10-01), Murase et al.
patent: 4178611 (1979-12-01), Okano
patent: 4360251 (1982-11-01), Rajchman
patent: 4426130 (1984-01-01), Knop
patent: 4448485 (1984-05-01), Bergman et al.
patent: 5007709 (1991-04-01), Iida et al.
patent: 5113286 (1992-05-01), Morrison
patent: 5155622 (1992-10-01), Kawatsuki et al.
patent: 5280388 (1994-01-01), Okayama et al.
patent: 5283691 (1994-02-01), Ogasawara
Spie, vol. 679, 1986, pp. 165-168, M.T. Gale, et al., "Diffractive Diffusers for Display Applications".
Fujisawa Katsuya
Ohnishi Ikuo
Henry Jon W.
Kuraray Co. Ltd.
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