JPS5487545A - Camera controller - Google Patents

Camera controller

Info

Publication number
JPS5487545A
JPS5487545A JP15600877A JP15600877A JPS5487545A JP S5487545 A JPS5487545 A JP S5487545A JP 15600877 A JP15600877 A JP 15600877A JP 15600877 A JP15600877 A JP 15600877A JP S5487545 A JPS5487545 A JP S5487545A
Authority
JP
Japan
Prior art keywords
shutter
light
liquid crystal
control circuit
outside world
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
JP15600877A
Other languages
Japanese (ja)
Inventor
Yoshikiyo Futagawa
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.)
Seiko Epson Corp
Suwa Seikosha KK
Epson Corp
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
Epson 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 Seiko Epson Corp, Suwa Seikosha KK, Epson Corp filed Critical Seiko Epson Corp
Priority to JP15600877A priority Critical patent/JPS5487545A/en
Publication of JPS5487545A publication Critical patent/JPS5487545A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Control For Cameras (AREA)
  • Liquid Crystal (AREA)

Abstract

PURPOSE: To facilitate controlling of quantity of light of a camera by using liquid crystal.
CONSTITUTION: A liquid crystal body 3 consisting of polarizing plates 23a, 23b and transparent plane substrate pair 20a, 20b holding liquid crystal 21 via spacer 22 and having transparent electrodes is disposed between an objective lens 2 and a shutter 4 and is connected to a control circuit 12. Then, the output of a light quantity detector 15 which detects the brightness of the outside world such as of the subject 1 or the like is inputted to the control circuit 12, by which voltages are selectively applied to the segmented transparent electrode groups of the liquid crystal body 3 and at the same time opening and closing of the shutter 4 are controlled. This causes the quantity of transmission light to be controlled according to the quantity of the light of the outside world and nearly a fixed quantity of light to be radiated to a photosensitive film 5. As a shutter button 7 is depressed to close a switch 10, the control circuit 12 is connected to a power source 11 before the shutter 4 is actuated by a shutter actuating means 8.
COPYRIGHT: (C)1979,JPO&Japio
JP15600877A 1977-12-23 1977-12-23 Camera controller Pending JPS5487545A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15600877A JPS5487545A (en) 1977-12-23 1977-12-23 Camera controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15600877A JPS5487545A (en) 1977-12-23 1977-12-23 Camera controller

Publications (1)

Publication Number Publication Date
JPS5487545A true JPS5487545A (en) 1979-07-12

Family

ID=15618299

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15600877A Pending JPS5487545A (en) 1977-12-23 1977-12-23 Camera controller

Country Status (1)

Country Link
JP (1) JPS5487545A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4869517A (en) * 1971-12-20 1973-09-21

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4869517A (en) * 1971-12-20 1973-09-21

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