US4818098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method of forming and projecting high precision optical images
Assignee: Sharp Corp
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Filing: 1986-05-09
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Granted: 1989-04-04
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Expires: 2006-05-09
Abstract
Abstract An apparatus for projecting high precision optical images with a selective heating source, advantageously a laser, on a writable, erasable, editable electronic slide and simultaneously or sequentially projecting the images in registration, onto a receiving surface such as a projection screen or photosensitive material, in the former case for the purpose of displaying the projected image and in the latter case for the purpose of creating a hard copy of the projected image.
Inventors
- 👤 Frederic J. Kahn
- 👤 Paul N. Kendrick
- 👤 Jerry Leff
- 👤 Linden J. Livoni
- 👤 Bryan E. Loucks
- 👤 David E. Stepner
- 👤 Kenneth G. Witte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:56
CPC Classifications
G; G03; G03B; G03B21/00
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
130 words
A projection apparatus including a light source, an image object plane containing at least two spaced reflecting images, optical means including a single condenser lens disposed to receive light from said source and form at least two beams and directing one of said beams on each of said reflecting images, at least two spaced multielement projection lenses in which the power is concentrated primarily in the inner elements and achromatization is concentrated primarily in the outer elements to provide lenses with front to rear surface lengths less than half the focal length to provide a compact design with relatively small off-axis angle, high resolution and low distortion, said projection lenses positioned to receive light reflected by said images on to a receiving plane so that the images are in coregistration.
Claim 2
Dependent Claim
130 words
A projection apparatus including a light source, an image object plane containing at least two spaced reflecting images, optical means including a single condenser lens disposed to receive light from said source and form at least two beams and directing one of said beams on each of said reflecting images, at least two spaced multielement projection lenses in which the power is concentrated primarily in the inner elements and achromatization is concentrated primarily in the outer elements to provide lenses with front to rear surface lengths less than half the focal length to provide a compact design with relatively small off-axis angle, high resolution and low distortion, said projection lenses positioned to receive light reflected by said images on to a receiving plane so that the images are in coregistration.
Claim 3
Dependent Claim
19 words
A projection apparatus as in claim 1 in which the spaced reflecting images are disposed on a single object.
Claim 4
Dependent Claim
18 words
A projection apparatus as in claim 1 in which the image object plane comprises an electronic light valve.
Claim 5
Dependent Claim
18 words
A projection apparatus as in claim 1 in which the image object plane comprises a smectic liquid crystal.
Claim 6
Dependent Claim
140 words
A projection apparatus including a light source, an image object plane containing at least three spaced reflecting images, optical means including a single condenser lens disposed to receive light from said source and form at least three beams with light of different wavelengths and directing said beams, one on each of said reflecting images, at least three spaced multielement projection lenses in which the power is concentrated primarily in the inner elements and achromatization is concentrated primarily in the outer elements to provide lenses with front to rear surface lengths less than half the focal length to provide a compact design with relatively small off-axis angle, high resolution and low distortion, said projection lenses positioned to receive light reflected by said images and direct the light from said images onto a receiving plane so that the images are in coregistration.
Claim 7
Dependent Claim
140 words
A projection apparatus including a light source, an image object plane containing at least three spaced reflecting images, optical means including a single condenser lens disposed to receive light from said source and form at least three beams with light of different wavelengths and directing said beams, one on each of said reflecting images, at least three spaced multielement projection lenses in which the power is concentrated primarily in the inner elements and achromatization is concentrated primarily in the outer elements to provide lenses with front to rear surface lengths less than half the focal length to provide a compact design with relatively small off-axis angle, high resolution and low distortion, said projection lenses positioned to receive light reflected by said images and direct the light from said images onto a receiving plane so that the images are in coregistration.
Claim 8
Dependent Claim
33 words
A projection apparatus as in claim 5 in which said image object plane contains four images, said optical means forms four beams and four projection lenses direct the light onto said receiving plane.
Claim 9
Independent Claim
124 words
An apparatus for projecting an image on a projection plane including an image object plane comprising an electronic light valve, means forming at least one image on said electronic light valve, a light source, optical means for receiving light from said light source and forming at least one beam and directing said beam to said electronic light valve image, at least one projecting lens positioned to receive light from said light valve image and direct the light to said projection plane, means at said projection plane for sensing the position of the image on the projection plane and means for controlling the image forming means for positioning the image on said electronic light valve responsive to the position sensed by the position sensing means.
Claim 10
Independent Claim
124 words
An apparatus for projecting an image on a projection plane including an image object plane comprising an electronic light valve, means forming at least one image on said electronic light valve, a light source, optical means for receiving light from said light source and forming at least one beam and directing said beam to said electronic light valve image, at least one projecting lens positioned to receive light from said light valve image and direct the light to said projection plane, means at said projection plane for sensing the position of the image on the projection plane and means for controlling the image forming means for positioning the image on said electronic light valve responsive to the position sensed by the position sensing means.
Claim 11
Dependent Claim
22 words
A projection apparatus as in claim 7 in which said optical means includes a single condensor lens to illuminate the projection lenses.
Claim 12
Dependent Claim
65 words
A projection apparatus as in claim 7 in which said projector lenses are multielement lenses in which the power is concentrated primarily in the inner elements and achromatization is concentrated primarily in the outer elements to provide lenses with front to rear surface lengths less than half the focal length to provide a compact design with relatively small off-axis angle, high resolution and low distortion.
Claim 13
Dependent Claim
65 words
A projection apparatus as in claim 8 in which said projector lenses are multielement lenses in which the power is concentrated primarily in the inner elements and achromatization is concentrated primarily in the outer elements to provide lenses with front to rear surface lengths less than half the focal length to provide a compact design with relatively small off-axis angle, high resolution and low distortion.
Claim 14
Independent Claim
138 words
An apparatus for projecting an image on a projection plane including an image object plane comprising an electronic light valve, means forming at least a plurality of images on said electronic light valve, a light source, optical means for receiving light from said light source and forming a plurality of beams and directing said beams to the images on said electronic light valve, a plurality of projecting lenses positioned to receive light from said light valve image and direct the light from each image in registration on said projection plane, means at said projection plane for sensing the position of each image on the projection plane and means for controlling the image forming means for positioning each image on said electronic light valve responsive to the position sensed by the position sensing means to assure positioning and registration.
Claim 15
Independent Claim
138 words
An apparatus for projecting an image on a projection plane including an image object plane comprising an electronic light valve, means forming at least a plurality of images on said electronic light valve, a light source, optical means for receiving light from said light source and forming a plurality of beams and directing said beams to the images on said electronic light valve, a plurality of projecting lenses positioned to receive light from said light valve image and direct the light from each image in registration on said projection plane, means at said projection plane for sensing the position of each image on the projection plane and means for controlling the image forming means for positioning each image on said electronic light valve responsive to the position sensed by the position sensing means to assure positioning and registration.
Claim 16
Dependent Claim
22 words
A projection apparatus as in claim 11 in which said optical means includes a single condensor lens to illuminate the projection lenses.
Claim 17
Dependent Claim
65 words
A projection apparatus as in claim 12 in which said projector lenses are multielement lenses in which the power is concentrated primarily in the inner elements and achromatization is concentrated primarily in the outer elements to provide lenses with front to rear surface lengths less than half the focal length to provide a compact design with relatively small off-axis angle, high resolution and low distortion.
Claim 18
Dependent Claim
11 words
Apparatus as in claim 11 wherein said images are reflective images.
Claim 19
Dependent Claim
14 words
Apparatus as in claim 11 wherein said beams are of light having different wavelengths.
Claim 20
Independent Claim
112 words
An apparatus for projecting an image on a projection plane including an image object plane comprising an electronic light valve, means forming at least one image on said electronic light valve, means for controlling the image forming means so that it records a distorted image which upon projection has the fidelity of the intended image, a light source, optical means for receiving light from said light source and forming at least one beam and directing said beam to said electronic light valve image, at least one projecting lens positioned to receive light from said light valve image and direct the light to said projection plane to form an image on said plane.
Claim 21
Independent Claim
112 words
An apparatus for projecting an image on a projection plane including an image object plane comprising an electronic light valve, means forming at least one image on said electronic light valve, means for controlling the image forming means so that it records a distorted image which upon projection has the fidelity of the intended image, a light source, optical means for receiving light from said light source and forming at least one beam and directing said beam to said electronic light valve image, at least one projecting lens positioned to receive light from said light valve image and direct the light to said projection plane to form an image on said plane.
Claim 22
Dependent Claim
13 words
Apparatus as in claim 16 in which said image is a reflective image.
Claim 23
Independent Claim
121 words
An apparatus for projecting an image on a projection plane including an image object plane comprising an electronic light, valve, means forming at least a plurality of images on said electronic light valve, means for controlling the image forming means so that it records a distorted image which upon projection has the fidelity of the intended image, a light source, optical means for receiving light from said light source and forming a plurality of beams and directing said beams to the images on said electronic light valve, a plurality of projecting lenses positioned to receive light from said light valve image and direct the light from each image in registration on said projection plane to form an image on said plane.
Claim 24
Independent Claim
121 words
An apparatus for projecting an image on a projection plane including an image object plane comprising an electronic light, valve, means forming at least a plurality of images on said electronic light valve, means for controlling the image forming means so that it records a distorted image which upon projection has the fidelity of the intended image, a light source, optical means for receiving light from said light source and forming a plurality of beams and directing said beams to the images on said electronic light valve, a plurality of projecting lenses positioned to receive light from said light valve image and direct the light from each image in registration on said projection plane to form an image on said plane.
Claim 25
Dependent Claim
13 words
A projection apparatus as in claim 18 wherein said images are reflective images.
Claim 26
Dependent Claim
16 words
A projection apparatus as in claim 18 wherein said beams are of light having different wavelengths.
Claim 27
Dependent Claim
22 words
A projection apparatus as in claim 20 in which said optical means includes a single condensor lens to illuminate the projection lenses.
Claim 28
Dependent Claim
65 words
A projection apparatus as in claim 21 in which said projector lenses are multielement lenses in which the power is concentrated primarily in the inner elements and achromatization is concentrated primarily in the outer elements to provide lenses with front to rear surface lengths less than half the focal length to provide a compact design with relatively small off-axis angle, high resolution and low distortion.
Claim 29
Independent Claim
140 words
An apparatus for projecting an image on a projection plane including an image object plane comprising an electronic light valve, means forming a light beam, means for scanning the electronic light valve with the light beam to form at least one image on said electronic light valve, means for controlling the light beam so that it records a distorted image which upon projection compensates for aberrations in the optics and to project the intended image on an image plane with high fidelity, a light source, optical means for receiving light from said light source and forming at least one beam and directing said beam to said electronic light valve image, and at least one projecting lens positioned to receive light from said light valve image and direct the light to said projection plane to form an image on said plane.
Claim 30
Independent Claim
140 words
An apparatus for projecting an image on a projection plane including an image object plane comprising an electronic light valve, means forming a light beam, means for scanning the electronic light valve with the light beam to form at least one image on said electronic light valve, means for controlling the light beam so that it records a distorted image which upon projection compensates for aberrations in the optics and to project the intended image on an image plane with high fidelity, a light source, optical means for receiving light from said light source and forming at least one beam and directing said beam to said electronic light valve image, and at least one projecting lens positioned to receive light from said light valve image and direct the light to said projection plane to form an image on said plane.
Claim 31
Dependent Claim
39 words
An apparatus as in claim 23 including means at the image plane for sensing the position of the image, and means for controlling the position of the light beam responsive to the position sensed by the positioning sensing means.
Claim 32
Dependent Claim
38 words
An apparatus as in claim 23 including means for scanning the light beam to form multiple images on said electronic light valve, and including multiple projection lenses to project said images in registration on an image receiving surface.
Claim 33
Dependent Claim
23 words
An apparatus as in claim 25 in which the electronic light valve operates in the reflective mode whereby images are reflected and projected.
Claim 34
Dependent Claim
18 words
An apparatus as in claim 26 which includes a single condenser to illuminate the image and projection lens.
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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) | 1992-04-03 | 1992-10-03 | 1993-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-03 | 1996-10-03 | 1997-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-03 | 2000-10-03 | 2001-04-04 | $7700.00 | Window Closed / Lapsed |