DE2817239A1 - Spiegel mit variabler brennweite - Google Patents

Spiegel mit variabler brennweite

Info

Publication number
DE2817239A1
DE2817239A1 DE19782817239 DE2817239A DE2817239A1 DE 2817239 A1 DE2817239 A1 DE 2817239A1 DE 19782817239 DE19782817239 DE 19782817239 DE 2817239 A DE2817239 A DE 2817239A DE 2817239 A1 DE2817239 A1 DE 2817239A1
Authority
DE
Germany
Prior art keywords
mirror
double layer
zone
reflective
layer
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.)
Ceased
Application number
DE19782817239
Other languages
German (de)
English (en)
Inventor
Georges Bret
Guy Michelet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Quantel SA
Original Assignee
Quantel SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Quantel SA filed Critical Quantel SA
Publication of DE2817239A1 publication Critical patent/DE2817239A1/de
Ceased legal-status Critical Current

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 Light Control Or Optical Switches (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
DE19782817239 1977-04-27 1978-04-20 Spiegel mit variabler brennweite Ceased DE2817239A1 (de)

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 (1)

Publication Number Publication Date
DE2817239A1 true DE2817239A1 (de) 1978-11-02

Family

ID=9190008

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782817239 Ceased DE2817239A1 (de) 1977-04-27 1978-04-20 Spiegel mit variabler brennweite

Country Status (4)

Country Link
JP (1) JPS53135346A (enrdf_load_stackoverflow)
DE (1) DE2817239A1 (enrdf_load_stackoverflow)
FR (1) FR2389145A1 (enrdf_load_stackoverflow)
GB (1) GB1603704A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4298247A (en) * 1979-04-04 1981-11-03 Quantel S.A. Thick optical element having a variable curvature
US8528461B2 (en) 2007-08-24 2013-09-10 Carl Zeiss Smt Gmbh Force actuator

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4298247A (en) * 1979-04-04 1981-11-03 Quantel S.A. Thick optical element having a variable curvature
US8528461B2 (en) 2007-08-24 2013-09-10 Carl Zeiss Smt Gmbh Force actuator

Also Published As

Publication number Publication date
FR2389145B1 (enrdf_load_stackoverflow) 1981-11-27
FR2389145A1 (fr) 1978-11-24
JPS53135346A (en) 1978-11-25
JPH0381132B2 (enrdf_load_stackoverflow) 1991-12-27
GB1603704A (en) 1981-11-25

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8131 Rejection