US3738204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for monitoring lens machining
Assignee: Automated Optics Inc
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Filing: 1971-09-07
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Granted: 1973-06-12
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Expires: 1991-09-07
Abstract
Abstract A first light beam is transmitted via a beam splitting prism axially through the lens to a light reflective support behind the lens while the lens is being machined. The reflected beam is retransmitted axially through the lens and prism to a television camera connected to a television receiver having a display screen on which appears an image of the face of the lens being machined. A second light beam is transmitted via another beam splitting prism laterally through the lens to a light reflective surface positioned laterally behind the lens. The reflected beam from the reflective surface is retransmitted laterally through the lens and other prism to another television camera connected to another television receiver having a display screen on which appears an image of the side of the lens being machined. A band is developed on the projected image formed from the axially projected beam thereby displaying tool contact on the lens by reducing transparency of the lens thereat.
Inventors
- 👤 R Spriggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:24
CPC Classifications
B; B23; B23Q; B23Q17/00; B23Q17/24; Y; Y10; Y10T; Y10T82/00; Y10T82/10; Y10T82/13; Y10T82/14; Y10T82/148; Y10T82/25; Y10T82/2572
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
107 words
Apparatus for viewing a circular, transparent lens having a circular end face and a circular periphery, comprising; a support for said lens, said support having a light reflective surface behind said lens; a light source; and a beam splitter disposed in an optical path which includes said light source,said lens and said light reflective surface whereby a portion of the light beam from said light source is reflected by said beam splitter and passes axially through said face of said lens, to said light reflective surface where the light beams are reflected and pass axially through said face of said lens and laterally through said beam splitter.
Claim 2
Dependent Claim
107 words
Apparatus for viewing a circular, transparent lens having a circular end face and a circular periphery, comprising; a support for said lens, said support having a light reflective surface behind said lens; a light source; and a beam splitter disposed in an optical path which includes said light source,said lens and said light reflective surface whereby a portion of the light beam from said light source is reflected by said beam splitter and passes axially through said face of said lens, to said light reflective surface where the light beams are reflected and pass axially through said face of said lens and laterally through said beam splitter.
Claim 3
Dependent Claim
61 words
Apparatus as defined in claim 1, further comprising, a television camera disposed to receive said light beams reflected from said surface and passed through said face of said lens and laterally through said beam splitter; and a television receiver operatively connected to said camera and having a projection screen for displaying a front face image of said lens on said screen.
Claim 4
Dependent Claim
59 words
Apparatus as defined in claim 2, wherein said support is arranged to rotate said lens and further comprising means for machining said front face of said lens while said lens is rotating so that said image of said front face will develop a circumferential band indicative of reduced transparency of said lens when said lens face is being machined.
Claim 5
Dependent Claim
86 words
Apparatus as defined in claim 2, further comprising; another light source; a mirror disposed laterally of said lens and support; and another beam splitter disposed in another optical path which includes said other light source,said lens and said mirror whereby a portion of the light beams from said other light source are reflected by said beam splitter laterally, diametrically through said transparent lens, to said mirror where the light beams are reflected and passed laterally, diametrically through said lens and laterally through said other beam splitter.
Claim 6
Dependent Claim
59 words
Apparatus as defined in claim 4, further comprising another television camera disposed to receive the light beams reflected from said mirror and passed laterally through said lens and said other beam splitter; and another televisions receiver operatively connected to said other camera and having another projection screen for displaying a side image of said lens on said other screen.
Claim 7
Dependent Claim
54 words
Apparatus as defined in claim 5, wherein said support is arranged to rotate said lens and further comprising means for selectively machining said lens while said lens is rotating so that said images of said front face and said side of said lens appear on respective projection screens while said lens is being machined.
Claim 8
Dependent Claim
87 words
Apparatus as defined in claim 1, further comprising; another light source, a mirror disposed laterally of said lens and support; and another beam splitter disposed in another optical path which includes said other light source, said lens and said mirror whereby a portion of the light beams from said other light source are reflected by said beam splitter laterally, diametrically through said transparent lens, to said mirror where the light beams are reflected and passed laterally, diametrically through said lens and laterally through said other beam splitter.
Claim 9
Dependent Claim
29 words
Apparatus as defined in claim 7 wherein said support is arranged to rotate said lens and further comprising means for selectively machining said lens while said lens is rotating.
Claim 10
Independent Claim
95 words
A method of monitoring the machining of a lenticular cut and a peripheral curve of a transparent lens having a circular end face and a circular periphery, comprising; rotating said lens while machining thereof; transmitting light beams axially through said lens while said lens is rotating; reflecting the light beams back through said lens axially; and converting the reflected light beams to a visible projected image of the face of said lens whereby said projected image will display a peripheral band indicative of reduced axial transparency of said lens due to machining of said face.
Claim 11
Independent Claim
95 words
A method of monitoring the machining of a lenticular cut and a peripheral curve of a transparent lens having a circular end face and a circular periphery, comprising; rotating said lens while machining thereof; transmitting light beams axially through said lens while said lens is rotating; reflecting the light beams back through said lens axially; and converting the reflected light beams to a visible projected image of the face of said lens whereby said projected image will display a peripheral band indicative of reduced axial transparency of said lens due to machining of said face.
Claim 12
Dependent Claim
78 words
A method of monitoring the machining of a lenticular cut and a peripheral cut of a lens as defined in claim 9 further comprising; machining said periphery of said lens while said lens is rotating; transmitting other light beams laterally, diametrically through said lens while said lens is being machined; reflecting said other light beams back laterally through said lens; and converting said other reflected light beams to another visible projected image of the side of said lens.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |