US3689134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-partite optical components with air space
Assignee: Individual
•
Filing: 1970-05-11
•
Granted: 1972-09-05
•
Expires: 1990-05-11
Abstract
Abstract A multiple lens combination with an air space in which at least three similar spacer bodies of the type which are commercially available in large quantities with relatively small tolerances, such as steel balls, are held in abutment against an internal bore of the lens mounting by a cage ring whereby the quotient of the permissive tolerance of the air space between the mutually facing lens surfaces and the diameter tolerance of the internal bore is at least approximately equal to the tangent of the wedge angle of the air space at its edge.
Inventors
- 👤 Franz X Leitmeir
- 👤 Franz John Saller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:55
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/02; G02B7/021
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
141 words
The combination of a lens mounting and of a two-partite optical component with an air space therebetween mounted within the lens mounting, characterized in that at least three similar spacer members in the form of balls which are adapted to be made in large quantities with relatively narrow tolerances serve for defining the air space and are held abuttingly against a bore of the lens mounting by a cage ring means and in abutment with the mutually facing lens surfaces of the two-partite optical component, and in that the quotient of the permissive tolerance of the air space between the mutually facing lens surfaces and the diameter tolerance of the bore are at least approximately equal to the tangent of the wedge angle of the air space at its edge formed by the curvature of the spaced mutually facing lens surfaces.
Claim 2
Dependent Claim
141 words
The combination of a lens mounting and of a two-partite optical component with an air space therebetween mounted within the lens mounting, characterized in that at least three similar spacer members in the form of balls which are adapted to be made in large quantities with relatively narrow tolerances serve for defining the air space and are held abuttingly against a bore of the lens mounting by a cage ring means and in abutment with the mutually facing lens surfaces of the two-partite optical component, and in that the quotient of the permissive tolerance of the air space between the mutually facing lens surfaces and the diameter tolerance of the bore are at least approximately equal to the tangent of the wedge angle of the air space at its edge formed by the curvature of the spaced mutually facing lens surfaces.
Claim 3
Dependent Claim
15 words
The combination according to claim 1, characterized in that said spacer members are steel balls.
Claim 4
Dependent Claim
72 words
The combination according to claim 1, characterized in that the abutment force, by means of which the spacer members are pressed radially against the internal bore, is larger than the force component effective in the radial direction which results from the force exerted in the axial direction on the lenses by elastic intermediate means and from the angular position of the surface areAs of the lenses in contact with the spacer members.
Claim 5
Dependent Claim
30 words
The combination according to claim 1, characterized in that steel balls having substantially the same diameter within small tolerances, which are used as spacer members, form an essentially gapless ring.
Claim 6
Dependent Claim
27 words
The combination according to claim 3, characterized in that an intermediate rigid ring secured against rotation is disposed between the elastic intermediate means and the securing means.
Claim 7
Dependent Claim
34 words
The combination according to claim 5, characterized in that the axial pressure is produced by at least three axial, threaded elements which press the intermediate ring with predetermined force against the elastic intermediate means.
Claim 8
Dependent Claim
26 words
The combination according to claim 3, characterized in that an elastic element of large surface friction is provided between an outer lens surface and the mounting.
Claim 9
Dependent Claim
19 words
The combination according to claim 7, characterized in that a plug is provided near the edge of a lens.
Claim 10
Dependent Claim
16 words
The combination according to claim 8, characterized in that said plug has a high inherent friction.
Claim 11
Dependent Claim
16 words
The combination according to claim 8, characterized in that said plug has a high adhesive force.
Claim 12
Dependent Claim
21 words
The combination according to claim 7, characterized by seal means for sealing the air space between the lenses against the outside.
Claim 13
Dependent Claim
15 words
The combination according to claim 7, characterized in that said seal means include elastic rings.
Claim 14
Dependent Claim
16 words
The combination according to claim 1, characterized in that said quotient is larger than said tangent.
Claim 15
Dependent Claim
26 words
The combination according to claim 1, characterized by securing means retaining the lenses in the mounting, and intermediate means between the lenses and said securing means.
Claim 16
Dependent Claim
27 words
The combination according to claim 14, characterized in that an intermediate rigid ring secured against rotation is disposed between the elastic intermediate means and the securing means.
Claim 17
Dependent Claim
34 words
The combination according to claim 14, characterized in that the axial pressure is produced by at least three axial, threaded elements which press an intermediate ring with predetermined force against the elastic intermediate means.
Claim 18
Dependent Claim
26 words
The combination according to claim 1, characterized in that an elastic element of large surface friction is provided between an outer lens surface and the mounting.
Claim 19
Dependent Claim
19 words
The combination according to claim 1, characterized in that a plug is provided near the edge of a lens.
Claim 20
Dependent Claim
16 words
The combination according to claim 18, characterized in that said plug has a high inherent friction.
Claim 21
Dependent Claim
16 words
The combination according to claim 18, characterized in that said plug has a high adhesive force.
Claim 22
Dependent Claim
21 words
The combination according to claim 1, characterized by seal means for sealing the air space between the lenses against the outside.
Claim 23
Dependent Claim
15 words
The combination according to claim 21, characterized in that said seal means include elastic rings.
Claim 24
Dependent Claim
77 words
The combination of a lens mounting and a multiple lens optical system of spaced lenses arranged in said lens mounting, characterized in that at least three similar spacer members adapted to be made in large quantities with relatively narrow tolerances are held in contact with mutually facing refractive surfaces of the lenses and abuttingly against a bore of the lens mounting by a cage ring means such that the lenses are maintained a fixed axial distance apart.
Claim 25
Dependent Claim
77 words
The combination of a lens mounting and a multiple lens optical system of spaced lenses arranged in said lens mounting, characterized in that at least three similar spacer members adapted to be made in large quantities with relatively narrow tolerances are held in contact with mutually facing refractive surfaces of the lenses and abuttingly against a bore of the lens mounting by a cage ring means such that the lenses are maintained a fixed axial distance apart.
Claim 26
Dependent Claim
12 words
The combination according to claim 23, wherein the spacer members are balls.
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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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |