FR2389145A1 - Miroir a focale variable - Google Patents
Miroir a focale variableInfo
- Publication number
- FR2389145A1 FR2389145A1 FR7712800A FR7712800A FR2389145A1 FR 2389145 A1 FR2389145 A1 FR 2389145A1 FR 7712800 A FR7712800 A FR 7712800A FR 7712800 A FR7712800 A FR 7712800A FR 2389145 A1 FR2389145 A1 FR 2389145A1
- Authority
- FR
- France
- Prior art keywords
- mirror
- variable focal
- focal mirror
- bimetallic strip
- free
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/10—Construction
- F21V7/16—Construction with provision for adjusting the curvature
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
- G02B26/0825—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a flexible sheet or membrane, e.g. for varying the focus
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Optical Elements Other Than Lenses (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
Abstract
Ce miroir comportant un bilame dont un des constituants au moins est réalisé en matière piézo-électrique et des électrodes d'alimentation dudit bilame, une face libre du bilame portant la surface réfléchissante dudit miroir, est caractérisé en ce que l'une au moins des surfaces libres du miroir ainsi constitué comporte au moins une zone 9 de courbure non nulle à l'état non excité.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7712800A FR2389145A1 (fr) | 1977-04-27 | 1977-04-27 | Miroir a focale variable |
GB1503178A GB1603704A (en) | 1977-04-27 | 1978-04-17 | Mirror having a variable focal length |
DE19782817239 DE2817239A1 (de) | 1977-04-27 | 1978-04-20 | Spiegel mit variabler brennweite |
JP4969678A JPS53135346A (en) | 1977-04-27 | 1978-04-26 | Focus changeable mirror |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7712800A FR2389145A1 (fr) | 1977-04-27 | 1977-04-27 | Miroir a focale variable |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2389145A1 true FR2389145A1 (fr) | 1978-11-24 |
FR2389145B1 FR2389145B1 (fr) | 1981-11-27 |
Family
ID=9190008
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7712800A Granted FR2389145A1 (fr) | 1977-04-27 | 1977-04-27 | Miroir a focale variable |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS53135346A (fr) |
DE (1) | DE2817239A1 (fr) |
FR (1) | FR2389145A1 (fr) |
GB (1) | GB1603704A (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2453423A1 (fr) * | 1979-04-04 | 1980-10-31 | Quantel Sa | Element optique epais a courbure variable |
FR2472198A1 (fr) * | 1979-12-20 | 1981-06-26 | Anvar | Miroirs astronomiques et reseaux aspheriques semi-encastres et procede de fabrication par flexion elastique |
FR2496380A1 (fr) * | 1980-12-15 | 1982-06-18 | Thomson Csf | Dispositif piezoresistif a commande electrique |
US8528461B2 (en) | 2007-08-24 | 2013-09-10 | Carl Zeiss Smt Gmbh | Force actuator |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58181033A (ja) * | 1982-04-16 | 1983-10-22 | Canon Inc | 照射角可変電子閃光装置 |
JP2506973Y2 (ja) * | 1992-09-04 | 1996-08-14 | 八郎 桝野 | 地図型ペ―パウエイト |
-
1977
- 1977-04-27 FR FR7712800A patent/FR2389145A1/fr active Granted
-
1978
- 1978-04-17 GB GB1503178A patent/GB1603704A/en not_active Expired
- 1978-04-20 DE DE19782817239 patent/DE2817239A1/de not_active Ceased
- 1978-04-26 JP JP4969678A patent/JPS53135346A/ja active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2453423A1 (fr) * | 1979-04-04 | 1980-10-31 | Quantel Sa | Element optique epais a courbure variable |
FR2472198A1 (fr) * | 1979-12-20 | 1981-06-26 | Anvar | Miroirs astronomiques et reseaux aspheriques semi-encastres et procede de fabrication par flexion elastique |
FR2496380A1 (fr) * | 1980-12-15 | 1982-06-18 | Thomson Csf | Dispositif piezoresistif a commande electrique |
US8528461B2 (en) | 2007-08-24 | 2013-09-10 | Carl Zeiss Smt Gmbh | Force actuator |
Also Published As
Publication number | Publication date |
---|---|
GB1603704A (en) | 1981-11-25 |
JPH0381132B2 (fr) | 1991-12-27 |
FR2389145B1 (fr) | 1981-11-27 |
DE2817239A1 (de) | 1978-11-02 |
JPS53135346A (en) | 1978-11-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |