Patent US3687025A successfully refreshed from Google Patents.
US3687025A
Expired / Lapsed
US
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Image spacing system
Assignee: Harris Corp
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Filing: 1970-05-04
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Granted: 1972-08-29
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Expires: 1990-05-04
Abstract
Abstract An image projection system successively projects images along a common optical axis toward a photosensitive surface. The individual images are spaced side by side on the photosensitive surface. The spacing is accomplished by collimating the image bearing light beams, then diverting the collimated beam by means of a movable reflecting surface (or equivalent) into a refocusing and scan lens assembly from which the light beams emit onto the photosensitive surface. The position of the reflector is controlled by any suitable means such as a servo mechanism. The refocusing and scan lens assembly incorporates compensation for the angular position of the reflecting member with respect to the optical centerline, whereby the images remain in focus and are not distorted even though the photosensitive surface is maintained flat at the image plane of the system.
Inventors
- 👤 Seymour Rosin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 23:36
CPC Classifications
B; B41; B41B; B41B21/00; B41B21/16; G; G02; G02B; G02B13/00; G02B13/0005
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
160 words
In an image recording system, a photosensitive surface supported in an image plane, a collimating lens receiving successive image bearing light beams and directing them along a center-line to the photosensitive surface, selectively movable means for changing angularly the direction of the collimated beams, and a scan lens receiving the beams from said movable means, said scan lens being constructed and arranged to adjust the beams according to the relationship y'' f . theta , where y'' is the distance of the image from the intersection of the axis of the scan lens and the image plane, f is the effective focal length of the scan lens to the image plane, and theta is the angle between the collimated beams and the optical axis of the scan lens, and thereby to refocus the collimated beams onto the photosensitive surface and simultaneously to compensate for any variations in image dimension introduced by deviation of the refocused beam from the optical center-line.
Claim 2
Dependent Claim
160 words
In an image recording system, a photosensitive surface supported in an image plane, a collimating lens receiving successive image bearing light beams and directing them along a center-line to the photosensitive surface, selectively movable means for changing angularly the direction of the collimated beams, and a scan lens receiving the beams from said movable means, said scan lens being constructed and arranged to adjust the beams according to the relationship y'' f . theta , where y'' is the distance of the image from the intersection of the axis of the scan lens and the image plane, f is the effective focal length of the scan lens to the image plane, and theta is the angle between the collimated beams and the optical axis of the scan lens, and thereby to refocus the collimated beams onto the photosensitive surface and simultaneously to compensate for any variations in image dimension introduced by deviation of the refocused beam from the optical center-line.
Claim 3
Dependent Claim
44 words
A machine as defined in claim 1, wherein said movable means for changing the angular direction of the collimated beams is a reflecting member intersecting the beams emitting from said collimating lens and rotatable about an axis at right angles to such collimated beams.
Claim 4
Independent Claim
174 words
The method of placing a plurality of images in side by side relation on a photosensitive member, comprising the steps of a. generating the images in succession and directing the image beams into a light collimating device, b. deflecting the collimated image beams to different predetermined locations on a photosensitive surface supported in an image plane whereby the collimated beams to tend to intersect the image plane at an angle, c. directing the deflected collimated beams first through a scan lens having corrective power related to the possible angular entry positions of the collimated beams into the scan lens in accordance with the relationship Y'' f . theta , where y'' is the distance of the image from the axis of the scan lens and the image plane, f is the effective focal length of the scan lens, and theta is the angle between the collimated beams and the optical axis of the scan lens such that the images focused on the photosensitive surface are undistorted despite the angular impingement of the beams thereon.
Claim 5
Independent Claim
174 words
The method of placing a plurality of images in side by side relation on a photosensitive member, comprising the steps of a. generating the images in succession and directing the image beams into a light collimating device, b. deflecting the collimated image beams to different predetermined locations on a photosensitive surface supported in an image plane whereby the collimated beams to tend to intersect the image plane at an angle, c. directing the deflected collimated beams first through a scan lens having corrective power related to the possible angular entry positions of the collimated beams into the scan lens in accordance with the relationship Y'' f . theta , where y'' is the distance of the image from the axis of the scan lens and the image plane, f is the effective focal length of the scan lens, and theta is the angle between the collimated beams and the optical axis of the scan lens such that the images focused on the photosensitive surface are undistorted despite the angular impingement of the beams thereon.
References Cited (Backward Citations)
US3364830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |