US4059347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical instrument and viewing method
Assignee: Individual
•
Filing: 1976-05-24
•
Granted: 1977-11-22
•
Expires: 1996-05-24
Abstract
Abstract A see-through zone is provided of a shape and size so that the horizontal end portions of the zone will merge as an image defining a target frame into which the user can center a stationary or moving target by keeping his line of sight properly on the target.
Inventors
- 👤 Richard P. Eitel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:18
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/16
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
138 words
An optical device for aiding an individual wearing the device to concentrate his vision on an object, said device comprising: a head mount having a horizontal see-through zone with outwardly curved, clearly defined ends spaced apart horizontally about three inches to approximate the pupillary distance of the viewer and extending over a vertical distance sufficient for vertical proximity expansion, said zone having a vertical width through most of its horizontal length as great as at said outwardly curved ends, and means for positioning said head mount with said zone centered in front of the viewer's eyes at a distance therefrom such that said outwardly curved ends horizontally approach each other by second degree fusion and vertically elongate by vertical proximity expansion whereby said ends are seen as a generally circular image when the viewer looks through said zone.
Claim 2
Dependent Claim
138 words
An optical device for aiding an individual wearing the device to concentrate his vision on an object, said device comprising: a head mount having a horizontal see-through zone with outwardly curved, clearly defined ends spaced apart horizontally about three inches to approximate the pupillary distance of the viewer and extending over a vertical distance sufficient for vertical proximity expansion, said zone having a vertical width through most of its horizontal length as great as at said outwardly curved ends, and means for positioning said head mount with said zone centered in front of the viewer's eyes at a distance therefrom such that said outwardly curved ends horizontally approach each other by second degree fusion and vertically elongate by vertical proximity expansion whereby said ends are seen as a generally circular image when the viewer looks through said zone.
Claim 3
Dependent Claim
39 words
An optical device according to claim 1 in which said head mount has a pair of horizontally spaced narrow transition zones outlining said outwardly curved ends and has an outer zone merging with said transition zones and see-through zone.
Claim 4
Dependent Claim
26 words
An optical instrument according to claim 2 in which said outer zone is less transparent than said see-through zone and more translucent than said transition zones.
Claim 5
Dependent Claim
15 words
An optical instrument according to claim 2 in which said outer zone is substantially transparent.
Claim 6
Dependent Claim
14 words
An optical instrument according to claim 2 in which said outer zone is translucent.
Claim 7
Dependent Claim
18 words
An optical instrument according to claim 2 in which said transition zone and outer zones are equally translucent.
Claim 8
Dependent Claim
16 words
An optical instrument according to claim 2 in which said outer zone is transparent and tinted.
Claim 9
Dependent Claim
16 words
An optical instrument according to claim 1 in which said see-through zone comprises an open slot.
Claim 10
Dependent Claim
17 words
An optical instrument according to claim 1 in which said transition zones each have a concave-convex configuration.
Claim 11
Dependent Claim
17 words
An optical device according to claim 1 in which said see-through zone is interrupted in the center.
Claim 12
Dependent Claim
106 words
An optical device for aiding an individual wearing the device to concentrate his vision on an object, said device comprising: viewing means having a horizontal see-through zone therein with clearly defined generally U-shaped ends spaced apart horizontally about three inches to approximate the pupillary distance of the viewer and having a vertical width through most of its horizontal length of about an inch, and head mounting means for positioning said viewing means with said zone centered in front of the viewer's eyes at a distance therefrom such that said generally U-shaped ends are jointly seen as a central image when the viewer looks through said zone.
Claim 13
Dependent Claim
106 words
An optical device for aiding an individual wearing the device to concentrate his vision on an object, said device comprising: viewing means having a horizontal see-through zone therein with clearly defined generally U-shaped ends spaced apart horizontally about three inches to approximate the pupillary distance of the viewer and having a vertical width through most of its horizontal length of about an inch, and head mounting means for positioning said viewing means with said zone centered in front of the viewer's eyes at a distance therefrom such that said generally U-shaped ends are jointly seen as a central image when the viewer looks through said zone.
Claim 14
Dependent Claim
21 words
An optical device according to claim 11 in which the top and bottom of said see-through zone are also clearly defined.
References Cited (Backward Citations)
US1676760A
Cited
US2511776A
Cited
US1568900A
Cited
US1752889A
Cited
US1882909A
Cited
US2409356A
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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) | 1980-11-21 | 1981-05-23 | 1981-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-21 | 1985-05-23 | 1985-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-21 | 1989-05-23 | 1989-11-22 | $7700.00 | Window Closed / Lapsed |