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US3881103A
Expired / Lapsed
US
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Optical apparatus for selectively forming images of different field sizes in the same image plane
Assignee: Eltro GmbH and Co
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Filing: 1967-11-27
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Granted: 1975-04-29
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Expires: 1987-11-27
Abstract
Abstract Image transmitted through objective is selectively deflected or not by a controllable intercepting element. When so deflected, image passes to image or focal plane with a certain field size. When not deflected by intercepting element, image is subsequently deflected and directed to same image or focal plane with a different field size. Apparatus is particularly useful in infrared devices and can be provided with coordinate determining device at focal plane.
Inventors
- 👤 Josef-Ferdinand Menke
- 👤 Gunter Pusch
- 👤 Siegfried Roth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:22
CPC Classifications
G; G02; G02B; G02B26/00; G02B26/08; G02B26/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
93 words
An optical arrangement comprising an objective adapted for transmitting an image of a remote object along an optical path, controllable means arranged along said path and selectively capable of reflecting the image to an image plane corresponding with the focal plane of said objective or of being transparent to said image, and optical deflection means to receive the image when the controllable means is transparent thereto and to direct the thusly received image to said image and focal plane with an image field size which is different from that of the reflected image.
Claim 2
Dependent Claim
93 words
An optical arrangement comprising an objective adapted for transmitting an image of a remote object along an optical path, controllable means arranged along said path and selectively capable of reflecting the image to an image plane corresponding with the focal plane of said objective or of being transparent to said image, and optical deflection means to receive the image when the controllable means is transparent thereto and to direct the thusly received image to said image and focal plane with an image field size which is different from that of the reflected image.
Claim 3
Dependent Claim
25 words
An optical arrangement as claimed in claim 1, wherein said deflection means includes at least two deflection elements and an image forming lens system therebetween.
Claim 4
Dependent Claim
17 words
An optical arrangement as claimed in claim 2, wherein one of said elements is a reversing prism.
Claim 5
Dependent Claim
31 words
An optical arrangement as claimed in claim 1, wherein said controllable means is a displaceable mirror adapted for being selectively positioned in and out of intercepting relationship with said optical path.
Claim 6
Dependent Claim
45 words
An optical arrangement as claimed in claim 4, wherein said controllable mEans includes in intercepting relationship with said optical path two relatively displaceable elements adapted for being spaced or in contact in order to be transparent or reflective to an image transmitted along said path.
Claim 7
Dependent Claim
40 words
An optical arrangement as claimed in claim 1, wherein said controllable means has a reflective surface arranged at an angle D to said optical path such that D U/2 wherein U is the desired angle of deflection of the image.
Claim 8
Dependent Claim
23 words
An optical arrangement as claimed in claim 1 comprising further means for the selective formation of a further image in said image plane.
Claim 9
Dependent Claim
22 words
An optical arrangement as claimed in claim 1 comprising means to analyze and determine coordinates for the image in said image plane.
Claim 10
Dependent Claim
36 words
An optical arrangement as claimed in claim 8, wherein the latter said means includes a slotted disc wherein is rotatable on its own axis and has an optical axis about which the disc nutates while rotating.
Claim 11
Dependent Claim
16 words
An optical arrangement as claimed in claim 9 comprising infrared sensitive means associated with said disc.
Claim 12
Dependent Claim
24 words
An optical arrangement as claimed in claim 1 comprising a light source transmitting light via said controllable means and deflection means to said objective.
Claim 13
Dependent Claim
17 words
An optical arrangement as claimed in claim 2, wherein said lens system is a three lens system.
References Cited (Backward Citations)
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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) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |