JPS6449026A - Camera - Google Patents

Camera

Info

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
Application number
JP20710587A
Other languages
Japanese (ja)
Inventor
Atsuo Ezaki
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP20710587A priority Critical patent/JPS6449026A/en
Publication of JPS6449026A publication Critical patent/JPS6449026A/en
Pending legal-status Critical Current

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.
JP20710587A 1987-08-20 1987-08-20 Camera Pending JPS6449026A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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