US3590713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable seating for optical components
Assignee: Jos Schneider Optische Werke GmbH
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Filing: 1969-05-05
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Granted: 1971-07-06
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Expires: 1989-05-05
Abstract
Abstract An optical objective in a camera, whose back-focal length is subject to change by the addition of supplemental lenses, is provided with a support that is axially displaceable along guide rails and, with the aid of a first knob, can be arrested in several axial positions for coarse adjustment. A second knob, controlling a leadscrew or a nut therefor, serves to carry out fine adjustment of the support position for accurate focusing. A third knob immobilizes the objective support in its selected position of fine adjustment. The three knobs, or at least two of them, are mounted on a common axis transverse to the guide rails.
Inventors
- 👤 Lothar Kirstein
- 👤 Gerd Kurz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:08
CPC Classifications
G; G03; G03B; G03B3/00; G02; G02B; G02B7/00; G02B7/02; G02B7/04; G02B7/14; G03B17/00; G03B17/02; G03B17/12; G03B17/14
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
159 words
In a camera having a housing and lens means in said housing with a changeable back-focal length, the combination therewith of a guide member axially extending in said housing; support means for said lens means including a guided member axially slidable on said guide member; a leadscrew drive including a first threaded element and a second threaded element in mating engagement with each other, one of said elements being rotatable about an axis parallel to said guide member, said first element being axially fixed with reference to one of said members; releasable coupling means for connecting said second element with the other of said members in any of several relative axial positions of said members; first manipulating means linked with said coupling means; and second manipulating means coupled with said one of said elements for rotating same relatively to the other of said elements to focus said lens means upon a receiving surface fixed with reference to said housing.
Claim 2
Dependent Claim
159 words
In a camera having a housing and lens means in said housing with a changeable back-focal length, the combination therewith of a guide member axially extending in said housing; support means for said lens means including a guided member axially slidable on said guide member; a leadscrew drive including a first threaded element and a second threaded element in mating engagement with each other, one of said elements being rotatable about an axis parallel to said guide member, said first element being axially fixed with reference to one of said members; releasable coupling means for connecting said second element with the other of said members in any of several relative axial positions of said members; first manipulating means linked with said coupling means; and second manipulating means coupled with said one of said elements for rotating same relatively to the other of said elements to focus said lens means upon a receiving surface fixed with reference to said housing.
Claim 3
Dependent Claim
25 words
The combination defined in claim 1, further comprising third manipulating means for immobilizing said guided member on said guide member in a selected relative position.
Claim 4
Dependent Claim
17 words
The combination defined in claim 2 wherein at least two of said manipulating means comprise coaxial knobs.
Claim 5
Dependent Claim
49 words
The combination defined in claim 3 wherein said first, second and third manipulating means respectively include a first knob, a second knob and a third knob substantially centered upon a common axis transverse to said guide member, said first and second knobs having nested stems traversing said third knob.
Claim 6
Dependent Claim
86 words
The combination defined in claim 2 wherein said third manipulating means includes a knob rotatable about an axis transverse to said guide member and further includes a pin parallel to said transverse axis and overlain by a peripheral portion of said knob, said guided member having an extension threadedly receiving said knob whereby the latter may be screwed in the direction of said transverse axis to exert pressure upon said pin, said guide member being a rail engageable by said pin under pressure from said knob.
Claim 7
Dependent Claim
23 words
The combination defined in claim 5 wherein said extension is a slider limitedly displaceable along said rail with reference to said guided member.
Claim 8
Dependent Claim
29 words
The combination defined in claim 1, further comprising a plurality of axially spaced indexing formations, said coupling means including a complementary detent formation selectively engageable with said indexing formations.
Claim 9
Dependent Claim
29 words
The combination defined in claim 7 wherein said second element is a spindle, said indexing formations including a plurality of grooved nuts threaded onto said spindle and immobilized thereon.
Claim 10
Dependent Claim
32 words
The combination defined in claim 1, further comprising first stop means on said housing and coacting second stop means on said support means for defining a limiting position for said lens means.
Claim 11
Dependent Claim
17 words
The combination defined in claim 9 wherein one of said stop means comprises an axially adjustable abutment.
References Cited (Backward Citations)
US3224351A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |