Title:
IMAGE FORMING DEVICE
Document Type and Number:
Japanese Patent JP3918044
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To form a clear image with high optical availability.
SOLUTION: An image H(x, y) for displaying a target image G(x, y) is displayed on a liquid crystal panel 14, and is focused on a PALSML (parallel oriented liquid crystal, spatial light modulator) 18. PALSLM 18 is irradiated with light hν for reading, and a phase modulated optical image α(x, y) read from PALSLM 18 is provided with a Fourier-transformation through a lens 26. A phase contrast filter 28 provides only zero-order optical component of the Fourier optical image αf(x, y) with a fixed phase shift. The phase shifted optical image is provided with an inverse-Fourier transformation through a lens 30, and an output image O(x, y) is projected onto an output plane 34. An optical image O'(x, y) split by a beam sampler 32 is photographed by a photographing device 40, and a conformity of the image (x, y) and the image G(x, y) is evaluated by an evaluation calculation unit 200. Based on this evaluation result, a control unit 100 provides an illumination source of light 12, PALSLM 18 and a phase contrast filter 28 with a feed-back control.
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Inventors:
Haruyoshi Toyota
Jesper Gluck Stud
Jesper Gluck Stud
Application Number:
JP19257797A
Publication Date:
May 23, 2007
Filing Date:
July 17, 1997
Export Citation:
Assignee:
Hamamatsu Photonics Co., Ltd.
Technical University of Denmark
Technical University of Denmark
International Classes:
G02B27/46; G02B27/52; G02F1/13; G02F1/135; G06E3/00; (IPC1-7): G02B27/46
Domestic Patent References:
| JP4306613A | ||||
| JP6162259A | ||||
| JP8271838A | ||||
| JP7028085A | ||||
| JP4115241A | ||||
| JP3255428A | ||||
| JP4141621A | ||||
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| JP10509808A |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Tatsuya Shioda
Shiro Terasaki
Kazuo Yoshii
Tatsuya Shioda
Shiro Terasaki
Kazuo Yoshii