US5592239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projector device
Assignee: Sony Corp
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Filing: 1994-07-13
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Granted: 1997-01-07
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Expires: 2014-07-13
Abstract
Abstract A projector device, which is simple and small and able to display images brighter and also able to improve the usefulness considerably. The effective reflecting lights of the mirror deflection type light modulators are focused into images at the position right in front of the projection lens, and the effective reflection lights are partly turned and focused on the two-dimensional position detector means for detecting the vertical and horizontal positions of the formed images. Then, based on the detected information from the two-dimensional position detector means, the mirror deflection type light modulators are finely displaced in the vertical and horizontal directions, or the mirror deflection type light modulators are finely displaced in the vertical direction and the synthesizing mirror means is finely displaced in the direction of focal length, so that the positions of the effective reflection lights of at least two mirror deflection type light modulators are adjusted, therefore the discrepancy of the positions among the colors can be effectively corrected and the image quality can be considerably improved.
Inventors
- 👤 Nobuyuki Hara
- 👤 Shigekatsu Tagami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:10
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/10; G02B27/1073; H; H04; H04N; H04N5/00; H04N5/74; G02B26/00; G02B26/08; G02B26/0816; G02B27/14; G02B27/145; H04N9/00; H04N9/12; H04N9/31; H04N9/3102; H04N9/3105; H04N9/3141; H04N9/315; H04N9/3155; H04N9/317; H04N9/3179; H04N9/3182
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
243 words
A projector device for displaying desired images on an image displaying surface, by projecting illuminating light on at least two mirror deflection type light modulators each having a plurality of microscopic mirror elements arranged in accordance with image data pixels, said at least two mirror deflection type light modulators being modulated by said image data of at least two colors respectively, and effective reflection lights from said at least two mirror deflection type light modulators which correspond to said respective image data being synthesized, said projector device comprising; relay lens means for focusing said effective reflection lights of said at least two mirror deflection type light modulators into images at a focusing position in front of a projection lens having an aperture, the focused images being smaller than said aperture; mirror means disposed in front of said focusing position for partly reflecting and turning said effective reflection light images; two-dimensional position detecting means for detecting vertical and horizontal positions of the effective reflection light images turned by said mirror means; adjusting means for finely displacing said at least two mirror deflection type light modulators in the vertical and horizontal directions; and control means for controlling said adjusting means in accordance with detected output from said two-dimensional position detecting means, so as to finely displace said at least two mirror deflection type light modulators thereby controlling the positions of said effective reflection light images of said at least two mirror deflection type light modulators.
Claim 2
Dependent Claim
243 words
A projector device for displaying desired images on an image displaying surface, by projecting illuminating light on at least two mirror deflection type light modulators each having a plurality of microscopic mirror elements arranged in accordance with image data pixels, said at least two mirror deflection type light modulators being modulated by said image data of at least two colors respectively, and effective reflection lights from said at least two mirror deflection type light modulators which correspond to said respective image data being synthesized, said projector device comprising; relay lens means for focusing said effective reflection lights of said at least two mirror deflection type light modulators into images at a focusing position in front of a projection lens having an aperture, the focused images being smaller than said aperture; mirror means disposed in front of said focusing position for partly reflecting and turning said effective reflection light images; two-dimensional position detecting means for detecting vertical and horizontal positions of the effective reflection light images turned by said mirror means; adjusting means for finely displacing said at least two mirror deflection type light modulators in the vertical and horizontal directions; and control means for controlling said adjusting means in accordance with detected output from said two-dimensional position detecting means, so as to finely displace said at least two mirror deflection type light modulators thereby controlling the positions of said effective reflection light images of said at least two mirror deflection type light modulators.
Claim 3
Dependent Claim
273 words
A projector device for displaying desired images on an image displaying surface, by projecting illuminating light on at least two mirror deflection type light modulators each having a plurality of microscopic mirror elements arranged in accordance with image data pixels, said at least two mirror deflection type light modulators being modulated by said image data of at least two colors respectively, and effective reflection lights from said at least two mirror deflection type light modulators being synthesized in accordance with said image data, said projector device comprising: relay lens means for focusing said effective reflection lights of said at least two mirror deflection type light modulators into images at a focusing position in front of a projection lens having an aperture, the focused images being smaller than said aperture; synthesizing mirror means for selectively reflecting said focused light images to form a synthesized image; mirror means disposed in front of said focusing position for partly reflecting and turning said synthesized image; two-dimensional position detecting means for detecting vertical and horizontal positions of the synthesized image turned by said mirror means; first adjusting means for finely displacing said at least two mirror deflection type light modulators in the vertical and horizontal directions; second adjusting means for finely displacing said synthesizing mirror means; and control means for selectively controlling said first and second adjusting means in accordance with detected output from said two-dimensional position detecting means so as to finely displace said at least two mirror deflection type light modulators and/or said synthesizing mirror means, thereby controlling the positions of said effective reflection light images of said at least two mirror deflection type light modulators.
Claim 4
Dependent Claim
273 words
A projector device for displaying desired images on an image displaying surface, by projecting illuminating light on at least two mirror deflection type light modulators each having a plurality of microscopic mirror elements arranged in accordance with image data pixels, said at least two mirror deflection type light modulators being modulated by said image data of at least two colors respectively, and effective reflection lights from said at least two mirror deflection type light modulators being synthesized in accordance with said image data, said projector device comprising: relay lens means for focusing said effective reflection lights of said at least two mirror deflection type light modulators into images at a focusing position in front of a projection lens having an aperture, the focused images being smaller than said aperture; synthesizing mirror means for selectively reflecting said focused light images to form a synthesized image; mirror means disposed in front of said focusing position for partly reflecting and turning said synthesized image; two-dimensional position detecting means for detecting vertical and horizontal positions of the synthesized image turned by said mirror means; first adjusting means for finely displacing said at least two mirror deflection type light modulators in the vertical and horizontal directions; second adjusting means for finely displacing said synthesizing mirror means; and control means for selectively controlling said first and second adjusting means in accordance with detected output from said two-dimensional position detecting means so as to finely displace said at least two mirror deflection type light modulators and/or said synthesizing mirror means, thereby controlling the positions of said effective reflection light images of said at least two mirror deflection type light modulators.
Claim 5
Dependent Claim
37 words
The projector device according to claim 1, wherein said adjusting means finely displaces said at least two mirror deflection type light modulators selectively in said vertical and horizontal directions, or in said vertical direction and rotational direction.
Claim 6
Dependent Claim
38 words
The projector device according to claim 2, wherein said first adjusting means finely displaces said at least two mirror deflection type light modulators selectively in said vertical and horizontal directions, or in said vertical direction and rotational direction.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-01-07 | 2000-07-08 | 2001-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-07 | 2004-07-08 | 2005-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-07 | 2008-07-08 | 2009-01-07 | $7700.00 | Window Closed / Lapsed |