GB1603704A - Mirror having a variable focal length - Google Patents

Mirror having a variable focal length Download PDF

Info

Publication number
GB1603704A
GB1603704A GB1503178A GB1503178A GB1603704A GB 1603704 A GB1603704 A GB 1603704A GB 1503178 A GB1503178 A GB 1503178A GB 1503178 A GB1503178 A GB 1503178A GB 1603704 A GB1603704 A GB 1603704A
Authority
GB
United Kingdom
Prior art keywords
mirror
multilayer structure
zone
reflecting surface
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.)
Expired
Application number
GB1503178A
Other languages
English (en)
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 GB1603704A publication Critical patent/GB1603704A/en
Expired 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)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (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)
GB1503178A 1977-04-27 1978-04-17 Mirror having a variable focal length Expired GB1603704A (en)

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
GB1603704A true GB1603704A (en) 1981-11-25

Family

ID=9190008

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1503178A Expired GB1603704A (en) 1977-04-27 1978-04-17 Mirror having a variable focal length

Country Status (4)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
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
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
DE102008041287A1 (de) 2007-08-24 2009-02-26 Carl Zeiss Smt Ag Kraftaktuator

Also Published As

Publication number Publication date
DE2817239A1 (de) 1978-11-02
JPS53135346A (en) 1978-11-25
JPH0381132B2 (ja) 1991-12-27
FR2389145B1 (ja) 1981-11-27
FR2389145A1 (fr) 1978-11-24

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee