US5144476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
All-reflective zoom optical system
Assignee: Raytheon Co
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Filing: 1989-04-24
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Granted: 1992-09-01
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Expires: 2009-04-24
Abstract
Abstract The present optical system provides an all-reflective zoom optical system (10, 12, 14,16 and 60, 62, 64). An imaging mechanism including one or more movable mirrors (12, 14, 16 and 60, 62) is utilized to effect the change in the magnification, field of view or both of the system.
Inventors
- 👤 Reynold S. Kebo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:56
CPC Classifications
G; G02; G02B; G02B23/00; G02B15/00; G02B17/00; G02B17/02; G02B17/06; G02B17/0694; G02B23/02; G02B23/06
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
73 words
A reflective zoom optical system comprising: a mirror fixably positioned about a central axis; and means for reflecting an image of an object being viewed through an exit pupil for viewing, said reflective means including two or more mirrors positioned to receive light from or reflect light to said fixed mirror and said two or more mirrors movable through a plurality of positions to effect magnification or field of view of the system.
Claim 2
Dependent Claim
73 words
A reflective zoom optical system comprising: a mirror fixably positioned about a central axis; and means for reflecting an image of an object being viewed through an exit pupil for viewing, said reflective means including two or more mirrors positioned to receive light from or reflect light to said fixed mirror and said two or more mirrors movable through a plurality of positions to effect magnification or field of view of the system.
Claim 3
Dependent Claim
27 words
The reflective zoom optical system according to claim 1 wherein said two or more movable mirrors are each positioned such that vertices move along said central axis.
Claim 4
Dependent Claim
50 words
The reflective room optical system according to claim 2 wherein said two or more movable mirrors are positioned such that one of said movable mirrors receives light from said object being viewed and said other mirror receives light from said first movable mirror and reflects light to said fixed mirror.
Claim 5
Dependent Claim
58 words
The reflective zoom optical system according to claim 2 wherein said reflective means includes three movable mirrors positioned such that one of said movable mirrors receives light from said fixed mirror, the second of said movable mirrors receives light from said first movable mirror, and the third of said movable mirrors receives light from said second movable mirror.
Claim 6
Dependent Claim
18 words
The reflective zoom optical system according to claim 1 wherein said fixed mirror is a positive power mirror.
Claim 7
Dependent Claim
20 words
The reflective zoom optical system according to claim 2 wherein one of said movable mirrors is a negative power mirror.
Claim 8
Dependent Claim
73 words
A reflective zoom optical system comprising: a mirror fixably positioned about a central axis; and means for reflecting an image of an object being viewed through an exit pupil for viewing, said reflective means including two or more mirrors positioned to receive light from or reflect light to said fixed mirror and said two or more mirrors movable through a plurality of positions to effect magnification and field of view of the system.
Claim 9
Dependent Claim
73 words
A reflective zoom optical system comprising: a mirror fixably positioned about a central axis; and means for reflecting an image of an object being viewed through an exit pupil for viewing, said reflective means including two or more mirrors positioned to receive light from or reflect light to said fixed mirror and said two or more mirrors movable through a plurality of positions to effect magnification and field of view of the system.
Claim 10
Dependent Claim
27 words
The reflective zoom optical system according to claim 7 wherein said two or more movable mirrors are each positioned such that vertices move along said central axis.
Claim 11
Dependent Claim
50 words
The reflective zoom optical system according to claim 8 wherein said two or more movable mirrors are positioned such that one of said movable mirrors receives light from said object being viewed and said other mirror receives light from said first movable mirror and reflects light to said fixed mirror.
Claim 12
Dependent Claim
58 words
The reflective zoom optical system according to claim 8 wherein said reflective means includes three movable mirrors positioned such that one of said movable mirrors receives light from said fixed mirror, the second of said movable mirrors receives light from said first movable mirror and the third of said movable mirrors receives light from said second movable mirror.
Claim 13
Dependent Claim
18 words
The reflective zoom optical system according to claim 7 wherein said fixed mirror is a positive power mirror.
Claim 14
Dependent Claim
20 words
The reflective zoom optical system according to claim 8 wherein one of said movable mirrors is a negative power mirror.
Claim 15
Dependent Claim
66 words
A reflective zoom optical system comprising: a primary mirror fixably positioned about a central axis; and means for reflecting an image of an object being viewed through an exit pupil for viewing, said reflective means including two or more mirrors positioned to receive light from said fixed primary mirror and movable through a plurality of positions to effect magnification or field of view of the system.
Claim 16
Dependent Claim
66 words
A reflective zoom optical system comprising: a primary mirror fixably positioned about a central axis; and means for reflecting an image of an object being viewed through an exit pupil for viewing, said reflective means including two or more mirrors positioned to receive light from said fixed primary mirror and movable through a plurality of positions to effect magnification or field of view of the system.
Claim 17
Dependent Claim
27 words
The reflective zoom optical system according to claim 13 wherein said two or more movable mirrors are each positioned such that vertices move along said central axis.
Claim 18
Dependent Claim
58 words
The reflective zoom optical system according to claim 14 wherein said reflective means includes three movable mirrors positioned such that one of said movable mirrors receives light from said fixed mirror, the second of said movable mirrors receives light from said first movable mirror and the third of said movable mirrors receives light from said second movable mirror.
Claim 19
Dependent Claim
18 words
The reflective zoom optical system according to claim 13 wherein said fixed mirror is a positive power mirror.
Claim 20
Dependent Claim
59 words
A reflective zoom optical system comprising: a mirror fixably positioned about a central axis; and means for reflecting an image of an object being viewed through an exit pupil for viewing, said reflective means positioned to reflect light to said fixed mirror and movable through a plurality of positions to effect magnification or field of view of the system.
Claim 21
Dependent Claim
59 words
A reflective zoom optical system comprising: a mirror fixably positioned about a central axis; and means for reflecting an image of an object being viewed through an exit pupil for viewing, said reflective means positioned to reflect light to said fixed mirror and movable through a plurality of positions to effect magnification or field of view of the system.
Claim 22
Dependent Claim
29 words
The reflective zoom optical system according to claim 17 wherein said reflective means comprises one or more movable mirrors each positioned such that vertices move along said central axis.
Claim 23
Dependent Claim
52 words
The reflective zoom optical system according to claim 18 wherein said reflective means includes a pair of movable mirrors positioned such that one of said movable mirrors receives light from said object being viewed and said other mirror receives light from said first movable mirror and reflects light to said fixed mirror.
Claim 24
Dependent Claim
18 words
The reflective zoom optical system according to claim 17 wherein said fixed mirror is a positive power mirror.
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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) | 1995-09-01 | 1996-03-02 | 1996-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-01 | 2000-03-02 | 2000-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-01 | 2004-03-02 | 2004-09-01 | $7700.00 | Window Closed / Lapsed |