US5072313A
Expired / Lapsed
US
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Constant-deviation reflector
Assignee: Driver Safety Systems Ltd
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Filing: 1989-08-09
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Granted: 1991-12-10
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Expires: 2009-08-09
Abstract
Abstract A constant-deviation device is disclosed which comprises a first reflective element in the form of one or more roof prisms and one or more second reflective elements providing one or more reflections. The first and the second reflective elements are mutually adjustable by rotation about one or more axes thereby to set an angle between the incident and the exiting beam. In one or more planes the angle is substantially unaffected by changes in the direction of incidence of the incident beam.
Inventors
- 👤 Naftali Schweitzer
- 👤 Joseph S. Bodenheimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:25
CPC Classifications
G; G02; G02B; G02B17/00; G02B17/02; G02B17/04; G02B5/00; G02B5/04; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
81 words
A constant-deviation reflector device comprising a first discrete reflective element in the form of at least one roof prism and at least one second discrete reflective element providing at least one reflection, said first and said second reflective elements being mutually adjustable by rotation about at least a first axis to set an angle between an incident and an exiting beam, wherein in at least one plane said angle is substantially unaffected by changes in the direction of the incident beam.
Claim 2
Dependent Claim
81 words
A constant-deviation reflector device comprising a first discrete reflective element in the form of at least one roof prism and at least one second discrete reflective element providing at least one reflection, said first and said second reflective elements being mutually adjustable by rotation about at least a first axis to set an angle between an incident and an exiting beam, wherein in at least one plane said angle is substantially unaffected by changes in the direction of the incident beam.
Claim 3
Dependent Claim
51 words
A constant-deviation reflector device according to claim 1 and wherein said at least one plane is identical with, or parallel to, the plane of symmetry of said roof prism which contains the line of intersection between the two roof surfaces thereof, and wherein said first axis is perpendicular to said plane.
Claim 4
Dependent Claim
17 words
A constant-deviation reflector device according to claim 1 and wherein said roof prism is an Amici prism.
Claim 5
Dependent Claim
18 words
A constant-deviation reflector device according to claim 1 and wherein said second reflective element is a right-angle prism.
Claim 6
Dependent Claim
55 words
A constant-deviation reflector device according to claim 1 and wherein said first and said second reflective elements are further mutually adjustable about a second axis extending in a direction perpendicular to the direction of said first axis, and about a third axis extending in a direction perpendicular to both said first and said second axis.
Claim 7
Dependent Claim
42 words
A constant-deviation reflector device according to claim 1 and wherein the exiting beam is shiftable to a path parallel to that of the incident beam by translation of the reflective element from which said beam exits, relative to the other reflective element.
Claim 8
Dependent Claim
26 words
A constant-deviation reflector device according to claim 1 and wherein said angle having been set, said two reflective elements are cemented together, using a transparent cement.
Claim 9
Dependent Claim
15 words
A constant-deviation reflector device according to claim 7 and wherein said transparent cement in UV-curable.
Claim 10
Independent Claim
84 words
A method of constructing a constant-deviation reflective device comprising the steps of: providing a first discrete reflective element in the form of at least one roof prism and at least one second discrete reflective element providing at least one reflection, adjusting the spatial relationship of said first and said second reflective elements by rotation of at least one of the first and second reflective elements about at least a first axis; and fixing the spatial relationship of said first and said second reflective elements.
Claim 11
Independent Claim
84 words
A method of constructing a constant-deviation reflective device comprising the steps of: providing a first discrete reflective element in the form of at least one roof prism and at least one second discrete reflective element providing at least one reflection, adjusting the spatial relationship of said first and said second reflective elements by rotation of at least one of the first and second reflective elements about at least a first axis; and fixing the spatial relationship of said first and said second reflective elements.
Claim 12
Dependent Claim
43 words
A method according to claim 9 and wherein said first axis is perpendicular to a plane, which is identical with, or parallel to, the plane of symmetry of said roof prism which contains the line of intersection between the two roof surfaces thereof.
Claim 13
Dependent Claim
15 words
A method according to claim 9 and wherein said roof prism is an Amici prism.
Claim 14
Dependent Claim
16 words
A method according to claim 9 and wherein said second reflective element is a right-angle prism.
Claim 15
Dependent Claim
62 words
A method according to claim 9 and wherein said adjusting step also comprises the step of adjusting the spatial relationship of said first and said second reflective elements about a second axis extending in a direction perpendicular to the direction of said first axis, and about a third axis extending in a direction perpendicular to both said first and said second axis.
Claim 16
Dependent Claim
25 words
A method according to claim 9 and wherein said adjusting step also includes translation of said first reflective element relative to said second reflective element.
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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) | 1994-12-09 | 1995-06-10 | 1995-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-09 | 1999-06-10 | 1999-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-09 | 2003-06-10 | 2003-12-10 | $7700.00 | Window Closed / Lapsed |