JPS56101101A - Lens - Google Patents

Lens

Info

Publication number
JPS56101101A
JPS56101101A JP348480A JP348480A JPS56101101A JP S56101101 A JPS56101101 A JP S56101101A JP 348480 A JP348480 A JP 348480A JP 348480 A JP348480 A JP 348480A JP S56101101 A JPS56101101 A JP S56101101A
Authority
JP
Japan
Prior art keywords
lens
voltage
transparent
refracted
refractive index
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
JP348480A
Other languages
Japanese (ja)
Inventor
Masao Nakamura
Eiji Sekine
Shigeru Waku
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.)
NEC Platforms Ltd
Original Assignee
Nitsuko Corp
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 Nitsuko Corp filed Critical Nitsuko Corp
Priority to JP348480A priority Critical patent/JPS56101101A/en
Publication of JPS56101101A publication Critical patent/JPS56101101A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0087—Simple or compound lenses with index gradient

Abstract

PURPOSE:To change the focal length of the lens by changing the refractive index, by constituting the lens with the transparent ferrodielectric substance and by controlling the voltage applied to the lens. CONSTITUTION:Transparent electrodes 4 are provided on the boundary face of transparent ferrodielectric substance 1 constituted with a prescribed curvature. The voltage of battery 2 is applied selectively to a pair of electrodes 4. When no voltage is applied to the lens, incident light beam 5 parallel with the optical axis is refracted as light beams 7 and 9; and when the voltage is applied, the refractive index of the lens is reduced, and light beam 3 is refracted as light beams 8 and 10 to generate focus F2. Consequently, the focus is moved to change the focal length according to presence or absence of the voltage. This invention is applied to the concave lens and the composite lens besides the convex lens of the figure.
JP348480A 1980-01-18 1980-01-18 Lens Pending JPS56101101A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP348480A JPS56101101A (en) 1980-01-18 1980-01-18 Lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP348480A JPS56101101A (en) 1980-01-18 1980-01-18 Lens

Publications (1)

Publication Number Publication Date
JPS56101101A true JPS56101101A (en) 1981-08-13

Family

ID=11558603

Family Applications (1)

Application Number Title Priority Date Filing Date
JP348480A Pending JPS56101101A (en) 1980-01-18 1980-01-18 Lens

Country Status (1)

Country Link
JP (1) JPS56101101A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60218904A (en) * 1984-03-02 1985-11-01 ユナイテツド・テクノロジ−ズ・コ−ポレイシヨン Millimeter wave converging and diverging device and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60218904A (en) * 1984-03-02 1985-11-01 ユナイテツド・テクノロジ−ズ・コ−ポレイシヨン Millimeter wave converging and diverging device and method

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