JPS5487545A - Camera controller - Google Patents
Camera controllerInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4869517A (en) * | 1971-12-20 | 1973-09-21 |
-
1977
- 1977-12-23 JP JP15600877A patent/JPS5487545A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4869517A (en) * | 1971-12-20 | 1973-09-21 |
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