US3612642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
A high-velocity optical scanner including a torsional fork supporting two reflectors
Assignee: FREQUENCY CONTROL PRODUCTS Inc A CORP OF NY
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Filing: 1969-06-27
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Granted: 1971-10-12
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Expires: 1989-06-27
Abstract
Abstract A high-velocity optical scanner for laser ''''Q'''' switching and other purposes, the scanner including first and second mirrors mounted on the tines of an electronically driven torsional tuning fork, the mirrors being oscillated thereby. An incoming beam of light or other form of radiant energy is directed toward the first mirror which reflects it onto the second mirror, the second mirror directing the beam onto a fixed third mirror. The third mirror acts to duplex the beam by directing it back to the second mirror, which returns the beam to the first mirror, whose reflection produces an exit beam having a high angular velocity.
Inventors
- 👤 Frank Dostal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:43
CPC Classifications
G; G02; G02B; G02B26/00; G02B26/08; G02B26/10; G02B26/0816; H; H01; H01S; H01S3/00; H01S3/10; H01S3/11; H01S3/1123; H01S3/121
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
125 words
A high-velocity optical scanner comprising: A. a torsional fork having a pair of spaced tines which oscillate about their respective longitudinal axes in phase opposition, B. electromagnetic means to sustain the tines of said fork in oscillation, C. first and second mirrors mounted on the free ends of the tines to oscillate therewith, D. a stationary third mirror disposed to receive reflections from the second mirror, to provide a reflex action, and E. means to direct an incoming beam toward said first mirror to be deflected thereby onto said second mirror, and from there onto said third mirror, which returns the beam to said second mirror to be directed back onto said first mirror whose reflection yields an exit beam having a high angular velocity.
Claim 2
Dependent Claim
125 words
A high-velocity optical scanner comprising: A. a torsional fork having a pair of spaced tines which oscillate about their respective longitudinal axes in phase opposition, B. electromagnetic means to sustain the tines of said fork in oscillation, C. first and second mirrors mounted on the free ends of the tines to oscillate therewith, D. a stationary third mirror disposed to receive reflections from the second mirror, to provide a reflex action, and E. means to direct an incoming beam toward said first mirror to be deflected thereby onto said second mirror, and from there onto said third mirror, which returns the beam to said second mirror to be directed back onto said first mirror whose reflection yields an exit beam having a high angular velocity.
Claim 3
Dependent Claim
32 words
A scanner as set forth in claim 1, wherein said tines are anchored on a common base which is mounted via a torsional compliance consisting of resilient pins to a mounting plate.
Claim 4
Dependent Claim
21 words
A scanner as set forth in claim 2, wherein said third mirror is mounted on a bracket attached to said base.
Claim 5
Dependent Claim
51 words
A scanner as set forth in claim 1, wherein said electromagnetic means is constituted by a pair of armatures attached to said tines adjacent the base thereof, a drive electromagnet disposed between said armatures adjacent one end thereof, and a pickup electromagnet disposed between the armatures adjacent the other end thereof.
Claim 6
Dependent Claim
26 words
A scanner as set forth in claim 1, wherein said mirrors are constituted by substrates of high thermal conductivity coated with a layer of high reflectivity.
Claim 7
Dependent Claim
13 words
A scanner as set forth in claim 5, wherein said layer is gold.
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |