JPS5550219A - Aperture device - Google Patents

Aperture device

Info

Publication number
JPS5550219A
JPS5550219A JP12302678A JP12302678A JPS5550219A JP S5550219 A JPS5550219 A JP S5550219A JP 12302678 A JP12302678 A JP 12302678A JP 12302678 A JP12302678 A JP 12302678A JP S5550219 A JPS5550219 A JP S5550219A
Authority
JP
Japan
Prior art keywords
electrodes
liquid crystal
light
transmittable
recess
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
JP12302678A
Other languages
Japanese (ja)
Inventor
Hiroshi Yokogawa
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12302678A priority Critical patent/JPS5550219A/en
Publication of JPS5550219A publication Critical patent/JPS5550219A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133371—Cells with varying thickness of the liquid crystal layer

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Diaphragms For Cameras (AREA)
  • Liquid Crystal (AREA)

Abstract

PURPOSE: To eliminate mechanical portions and enable aperture control to be performed stably by filling liquid crystal material between a pair of light transmittable electrodes provided opposedly within a light transmittable case and controlling the light transmission part of the liquid crystal according to the voltage to be supplied to the electrodes.
CONSTITUTION: Out a pair of transparent electrodes 31, 32 provided within a cylindrical light-transmittable case 30, a recess 311 of a conical shape is formed in the electrode 31 and liquid crystal 33 of, e.g., scattering type, is filled between the electrodes 31, 32. The transparent electrodes 31, 32 have the electric field distribution proportional to the diameter of the recess 311 of conical shape, in which the liquid crystal 33 is re-arrayed according to the voltage to be supplied to the electrodes 31, 32 and the diameter of the circular light transmission part C is varied in the arrow directions, whereby the regulation of the quantity of light is accomplished.
COPYRIGHT: (C)1980,JPO&Japio
JP12302678A 1978-10-05 1978-10-05 Aperture device Pending JPS5550219A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12302678A JPS5550219A (en) 1978-10-05 1978-10-05 Aperture device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12302678A JPS5550219A (en) 1978-10-05 1978-10-05 Aperture device

Publications (1)

Publication Number Publication Date
JPS5550219A true JPS5550219A (en) 1980-04-11

Family

ID=14850370

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12302678A Pending JPS5550219A (en) 1978-10-05 1978-10-05 Aperture device

Country Status (1)

Country Link
JP (1) JPS5550219A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60250785A (en) * 1984-05-28 1985-12-11 Seiko Epson Corp Television camera provided with liquid crystal automatic dimmer
JPS61170732U (en) * 1985-04-12 1986-10-23
JPS62159119A (en) * 1986-01-07 1987-07-15 Fujitsu Ltd Liquid crystal display panel
JPS6441495U (en) * 1987-09-08 1989-03-13
JP2005257783A (en) * 2004-03-09 2005-09-22 Sony Corp Electric light control device, lens barrel, and imaging device
CN107783349A (en) * 2016-08-24 2018-03-09 蔡睿哲 Non-mechanical aperture-adjustable diaphragm assembly
USD852864S1 (en) 2015-08-21 2019-07-02 Fujifilm Corporation Aperture adjusting device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50126232A (en) * 1974-03-23 1975-10-03
JPS5171095A (en) * 1974-12-17 1976-06-19 Matsushita Electric Industrial Co Ltd Ekishodenatsuhyojisochi

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50126232A (en) * 1974-03-23 1975-10-03
JPS5171095A (en) * 1974-12-17 1976-06-19 Matsushita Electric Industrial Co Ltd Ekishodenatsuhyojisochi

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60250785A (en) * 1984-05-28 1985-12-11 Seiko Epson Corp Television camera provided with liquid crystal automatic dimmer
JPS61170732U (en) * 1985-04-12 1986-10-23
JPS62159119A (en) * 1986-01-07 1987-07-15 Fujitsu Ltd Liquid crystal display panel
JPS6441495U (en) * 1987-09-08 1989-03-13
JP2005257783A (en) * 2004-03-09 2005-09-22 Sony Corp Electric light control device, lens barrel, and imaging device
USD852864S1 (en) 2015-08-21 2019-07-02 Fujifilm Corporation Aperture adjusting device
CN107783349A (en) * 2016-08-24 2018-03-09 蔡睿哲 Non-mechanical aperture-adjustable diaphragm assembly

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