US3703858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for preparing master reticles
Assignee: Gyrex Corp
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Filing: 1970-08-31
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Granted: 1972-11-28
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Expires: 1990-08-31
Abstract
Abstract A pattern generator comprising a light source from which light rays are directed past a shutter and an adjustable optical slit for delivery to a precision reduction lens which exposes a high resolution photographic plate mounted on a movable mounting fixture. An alphanumeric disk is positioned between the optical slit and the reduction lens so that, if desired, a character or number may be imaged onto the photographic plate.
Inventors
- 👤 Peter S La Canfora
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:17
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/70; G03F7/70483; G03F7/70491; G03F7/70541; G03F7/20; G03F7/70375
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
224 words
A pattern generator comprising a light source, means for supporting a high resolution photographic plate relative to said light source, means for moving said support means in a single plane relative to said light source, means positioned intermediate said light source and said support means defining an optical slit through which rays from said light source may pass comprising, a first pair of plates in a first, common plane perpendicular to the path of light which extends from said light source to said support means and a second pair of plates in a second, common plane perpendicular to the Path of light which extends from said light source to said support means, means for adjusting the shape and dimensions of the optical slit comprising means for adjusting the distance between adjoining edges of said first pair of plates by moving at least one of said first pair of plates along a first line of motion in said first plane and for adjusting the distance between adjoining edges of said second pair of plates by moving at least one of said second pair of plates along a line of motion in said second plane which is perpendicular to the first line of motion, and means for focusing the image formed by said optical slit defining means on a photographic plate mounted on said supporting means.
Claim 2
Dependent Claim
224 words
A pattern generator comprising a light source, means for supporting a high resolution photographic plate relative to said light source, means for moving said support means in a single plane relative to said light source, means positioned intermediate said light source and said support means defining an optical slit through which rays from said light source may pass comprising, a first pair of plates in a first, common plane perpendicular to the path of light which extends from said light source to said support means and a second pair of plates in a second, common plane perpendicular to the Path of light which extends from said light source to said support means, means for adjusting the shape and dimensions of the optical slit comprising means for adjusting the distance between adjoining edges of said first pair of plates by moving at least one of said first pair of plates along a first line of motion in said first plane and for adjusting the distance between adjoining edges of said second pair of plates by moving at least one of said second pair of plates along a line of motion in said second plane which is perpendicular to the first line of motion, and means for focusing the image formed by said optical slit defining means on a photographic plate mounted on said supporting means.
Claim 3
Dependent Claim
29 words
The pattern generator of claim 1 including means for reducing the image formed by the optical slit defining means and focused onto the photographic plate on said supporting means.
Claim 4
Dependent Claim
39 words
The pattern generator of claim 1 including an alphanumeric disk positioned intermediate said light source and said focusing means and means for positioning selected symbols on said disk in the path of the light rays from said light source.
Claim 5
Dependent Claim
57 words
The pattern generator of claim 1 including shutter means intermediate said light source and said support means for allowing light rays from said light source to reach a photographic plate mounted on said support means only during preselected intervals and means for actuating said shutter means between a closed, light ray intersecting position and an open position.
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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) | 1975-11-28 | 1976-05-29 | 1976-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-28 | 1980-05-29 | 1980-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-28 | 1984-05-29 | 1984-11-28 | $7700.00 | Window Closed / Lapsed |