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JPS57158802A - Variable focus lens - Google Patents

Variable focus lens

Info

Publication number
JPS57158802A
JPS57158802A JP4573081A JP4573081A JPS57158802A JP S57158802 A JPS57158802 A JP S57158802A JP 4573081 A JP4573081 A JP 4573081A JP 4573081 A JP4573081 A JP 4573081A JP S57158802 A JPS57158802 A JP S57158802A
Authority
JP
Japan
Prior art keywords
liquid
lens
airtight chamber
gas
hollow material
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.)
Pending
Application number
JP4573081A
Other languages
Japanese (ja)
Inventor
Sakuji Kajiyama
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP4573081A priority Critical patent/JPS57158802A/en
Publication of JPS57158802A publication Critical patent/JPS57158802A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/12—Fluid-filled or evacuated lenses
    • G02B3/14—Fluid-filled or evacuated lenses of variable focal length

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)

Abstract

PURPOSE:To make the focal length of a lens adjustable, by press-charging a liquid into a flexible and expansible transparent hollow material to adjust the radius of curvature of this hollow material by the control of the quantity of gas or liquid in the lens. CONSTITUTION:Circumferential edges of a solid material 1 made from glass, plastic, or the like and a flexible and expansible transparent deformable material 2 made of plastic or the like are fixed closely to each other to form an airtight chamber 3 surrounded by these materials. This hollow material is provided with a charging inlet through which gas or liquid is charged int the airtight chamber 3 and a reducing valve 5 which reduces the pressure of the airtight chamber 3 to enlarge a radius R of curvature of the deformable part and removes bubbles mixed in liquid of the airtight chamber 3. Gas or liquid having prescribed refractive index and transmittivity is selected and is stored in a pressure bomb and is charged properly from the charging inlet 4. This lens is used as a single lens, or plural airtight chambers are provided to generate a pressure difference.
JP4573081A 1981-03-27 1981-03-27 Variable focus lens Pending JPS57158802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4573081A JPS57158802A (en) 1981-03-27 1981-03-27 Variable focus lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4573081A JPS57158802A (en) 1981-03-27 1981-03-27 Variable focus lens

Publications (1)

Publication Number Publication Date
JPS57158802A true JPS57158802A (en) 1982-09-30

Family

ID=12727431

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4573081A Pending JPS57158802A (en) 1981-03-27 1981-03-27 Variable focus lens

Country Status (1)

Country Link
JP (1) JPS57158802A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH027601U (en) * 1988-06-27 1990-01-18
WO2007049058A3 (en) * 2005-10-28 2007-09-07 J & J Technologies Ltd Variable focus lens
JP2014095848A (en) * 2012-11-12 2014-05-22 Joybond Co Ltd Mirror and lens
WO2014176651A1 (en) * 2013-04-29 2014-11-06 Massaru Amemiya Roberto Continuous multifocal flexible lenses, their control mechanisms and processes for obtaining products

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH027601U (en) * 1988-06-27 1990-01-18
WO2007049058A3 (en) * 2005-10-28 2007-09-07 J & J Technologies Ltd Variable focus lens
US7768712B2 (en) 2005-10-28 2010-08-03 J & J Technologies Limited Variable focus lens
JP2014095848A (en) * 2012-11-12 2014-05-22 Joybond Co Ltd Mirror and lens
WO2014176651A1 (en) * 2013-04-29 2014-11-06 Massaru Amemiya Roberto Continuous multifocal flexible lenses, their control mechanisms and processes for obtaining products

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