JPS6449026A - Camera - Google Patents
CameraInfo
- Publication number
- JPS6449026A JPS6449026A JP20710587A JP20710587A JPS6449026A JP S6449026 A JPS6449026 A JP S6449026A JP 20710587 A JP20710587 A JP 20710587A JP 20710587 A JP20710587 A JP 20710587A JP S6449026 A JPS6449026 A JP S6449026A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- light
- photographing lens
- transmitting body
- photochromic
- 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
- Diaphragms For Cameras (AREA)
- Structure And Mechanism Of Cameras (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
PURPOSE:To automatically make the quantity of light incident on a photo graphing lens nearly constant in a wide range by composing the photographing lens or a lens filter of a photochromic light transmitting body. CONSTITUTION:The photographing lens 7 is made up with the light transmitting body possessing photochromic effects. As the quantity of light incident on the photographing lens 7 increases, said lens 7 becomes darker in proportion to that increase. Conversely, as light quantity decreases, it becomes brighter. The photochromic light transmitting body comprising the photographing lens 7 employs glass containing photosensitive silver halide as colloid particles. The glass is produced as follows: glass containing alkali, alumina, borosilicate as constituents is heated and molten with silver chloride and silver bromide. After they are cooled, silver halide particles are deposited by reheating, etc. Without using any complicated, mechanical light quantity adjusting mechanism, light quantity in and out of rooms can lie within an appropriate range.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20710587A JPS6449026A (en) | 1987-08-20 | 1987-08-20 | Camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20710587A JPS6449026A (en) | 1987-08-20 | 1987-08-20 | Camera |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6449026A true JPS6449026A (en) | 1989-02-23 |
Family
ID=16534285
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20710587A Pending JPS6449026A (en) | 1987-08-20 | 1987-08-20 | Camera |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6449026A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017066035A1 (en) * | 2015-10-15 | 2017-04-20 | Carrier Corporation | An image sensor terminal and building monitoring system |
-
1987
- 1987-08-20 JP JP20710587A patent/JPS6449026A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017066035A1 (en) * | 2015-10-15 | 2017-04-20 | Carrier Corporation | An image sensor terminal and building monitoring system |
US10645261B2 (en) | 2015-10-15 | 2020-05-05 | Carrier Corporation | Image sensor terminal and building monitoring system |
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