GB1393896A - Optical deflecting devices - Google Patents
Optical deflecting devicesInfo
- Publication number
- GB1393896A GB1393896A GB3454271A GB3454271A GB1393896A GB 1393896 A GB1393896 A GB 1393896A GB 3454271 A GB3454271 A GB 3454271A GB 3454271 A GB3454271 A GB 3454271A GB 1393896 A GB1393896 A GB 1393896A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reflector
- coil
- movable part
- electrical
- optical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
- G02B7/1821—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors for rotating or oscillating mirrors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/59—Transmissivity
- G01N21/5907—Densitometers
- G01N21/5911—Densitometers of the scanning type
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R13/00—Arrangements for displaying electric variables or waveforms
- G01R13/04—Arrangements for displaying electric variables or waveforms for producing permanent records
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Optics & Photonics (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
- Mechanical Optical Scanning Systems (AREA)
Abstract
1393896 Optical reflectors; scanning; automatic control of oscillation VICKERS Ltd 10 July 1972 [22 July 1971] 34542/71 Headings G2J and G3R An optical deflecting device, which may be used to provide a scanning spot, comprises a stationary part 1 and a movable part 4, one of these parts carrying an electrical coil 3, the arrangement being such that the passage of a current through the coil, by interaction with the other part, moves the movable part in the direction of its winding axis X-X; the device also including an optical reflector 9, first and second flexure springs 7 and 8 whereby the reflector is coupled to the movable part and the stationary part, respectively, so that movement of the movable part produces rotational movement of the reflector other than about an axis perpendicular to the reflector, and a strain gauge carried by one of the flexure springs and connected in a control circuit for forming an electrical signal dependent upon the magnitude and direction of the displacement, which electrical signal can be employed as a negative feedback signal for controlling supply of the electric current. Stationary member 1, as shown, carries magnet 2 (which may be permanent or an electromagnet), the magnet preferably being formed with an annular recess to accommodate coil 3. To provide a repetitive scan, a sawtooth waveform current is applied to the coil. Strain gauges 11, 12 are used to produce electrical signals representing the actual displacement, and these signals applied as negative feedback to the energizing waveform. An electrical circuit is disclosed, Fig. 2 (not shown) to achieve this effect.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3454271A GB1393896A (en) | 1971-07-22 | 1971-07-22 | Optical deflecting devices |
DE19722235654 DE2235654A1 (en) | 1971-07-22 | 1972-07-20 | OPTICAL DEFLECTOR |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3454271A GB1393896A (en) | 1971-07-22 | 1971-07-22 | Optical deflecting devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1393896A true GB1393896A (en) | 1975-05-14 |
Family
ID=10366918
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3454271A Expired GB1393896A (en) | 1971-07-22 | 1971-07-22 | Optical deflecting devices |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE2235654A1 (en) |
GB (1) | GB1393896A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4011003A (en) * | 1975-03-10 | 1977-03-08 | U.S. Philips Corporation | Electromagnetically controllable pivoting mirror device |
US4021096A (en) * | 1975-10-20 | 1977-05-03 | U.S. Philips Corporation | Electrodynamically controllable pivoting mirror device |
GB2029600A (en) * | 1978-06-21 | 1980-03-19 | Universal Pioneer Corp | Movable mirror device for optical information recording and reproducing system |
CN114167574A (en) * | 2021-12-10 | 2022-03-11 | 中国科学院光电技术研究所 | Micro-displacement adjusting mechanism for reflector |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4480914A (en) * | 1982-09-13 | 1984-11-06 | The Foxboro Company | Vibration compensating interferometer mirror drive system |
SU1430931A1 (en) * | 1985-11-04 | 1988-10-15 | Институт Машиноведения Им.А.А.Благонравова | Scanner for process laser units |
FR2622710A1 (en) * | 1987-10-30 | 1989-05-05 | Sciaky Sa | Device for control of the pivoting of a tool, especially of a mirror for reflecting a laser beam |
FR2690532A1 (en) * | 1992-04-27 | 1993-10-29 | Europ Agence Spatiale | Pointing, or aiming, device for optical equipment e.g. for satellite communication using modulated laser beam - has system of two mirrors rotating about axes perpendicular to each other with fine tuning of first mirror |
-
1971
- 1971-07-22 GB GB3454271A patent/GB1393896A/en not_active Expired
-
1972
- 1972-07-20 DE DE19722235654 patent/DE2235654A1/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4011003A (en) * | 1975-03-10 | 1977-03-08 | U.S. Philips Corporation | Electromagnetically controllable pivoting mirror device |
US4021096A (en) * | 1975-10-20 | 1977-05-03 | U.S. Philips Corporation | Electrodynamically controllable pivoting mirror device |
GB2029600A (en) * | 1978-06-21 | 1980-03-19 | Universal Pioneer Corp | Movable mirror device for optical information recording and reproducing system |
GB2029600B (en) * | 1978-06-21 | 1983-02-02 | Universal Pioneer Corp | Movable mirror device for optical information recording and reproducing system |
CN114167574A (en) * | 2021-12-10 | 2022-03-11 | 中国科学院光电技术研究所 | Micro-displacement adjusting mechanism for reflector |
CN114167574B (en) * | 2021-12-10 | 2023-06-13 | 中国科学院光电技术研究所 | Micro-displacement adjusting mechanism for reflecting mirror |
Also Published As
Publication number | Publication date |
---|---|
DE2235654A1 (en) | 1973-02-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |