JPS5799628A - Optical device for photographing car body and inside of car through windshield equally - Google Patents

Optical device for photographing car body and inside of car through windshield equally

Info

Publication number
JPS5799628A
JPS5799628A JP17600980A JP17600980A JPS5799628A JP S5799628 A JPS5799628 A JP S5799628A JP 17600980 A JP17600980 A JP 17600980A JP 17600980 A JP17600980 A JP 17600980A JP S5799628 A JPS5799628 A JP S5799628A
Authority
JP
Japan
Prior art keywords
infrared
wavelength
transmittivity
filter
car
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.)
Granted
Application number
JP17600980A
Other languages
Japanese (ja)
Other versions
JPS605930B2 (en
Inventor
Osamu Sase
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.)
TOKYO AIRCRAFT INSTR CO
TOUKIYOU KOUKUU KEIKI KK
Tokyo Koku Keiki KK
Original Assignee
TOKYO AIRCRAFT INSTR CO
TOUKIYOU KOUKUU KEIKI KK
Tokyo Koku Keiki KK
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 TOKYO AIRCRAFT INSTR CO, TOUKIYOU KOUKUU KEIKI KK, Tokyo Koku Keiki KK filed Critical TOKYO AIRCRAFT INSTR CO
Priority to JP17600980A priority Critical patent/JPS605930B2/en
Publication of JPS5799628A publication Critical patent/JPS5799628A/en
Publication of JPS605930B2 publication Critical patent/JPS605930B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor

Abstract

PURPOSE:To equalize photographic conditions at the inside and outside of a car by attaching an infrared-ray absorbing filter and an infrared-ray transmitting filter, which have prescribed characteristics, on the front optical axis of a camera which takes a picture with the near infrared wavelength of visible light. CONSTITUTION:An infrared-ray transmitting filter 1 used on the front optical axis of a camera 3 uses a glass filter which has <=10% transmittivity of >=600mum wavelength and >=90% transmittivity of <=700mum wavelength. Further, an infrared-ray absorbing filter 2 is composed of an infrared-ray absorbing glass filter 2b provided with a reflection-preventive thin film coating 2a on the surface, and has >=80% transmittivity of 600mum wavelength and 10% transmittivity of >= 1,000mu wavelength; those characteristics are similar to those of a windshield. Furthermore, a total reflection coating 2c is provided on the reverse surface to obtain a reverse-surface mirror.
JP17600980A 1980-12-12 1980-12-12 Optical device for photographing the inside of a car windshield and the car body alike Expired JPS605930B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17600980A JPS605930B2 (en) 1980-12-12 1980-12-12 Optical device for photographing the inside of a car windshield and the car body alike

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17600980A JPS605930B2 (en) 1980-12-12 1980-12-12 Optical device for photographing the inside of a car windshield and the car body alike

Publications (2)

Publication Number Publication Date
JPS5799628A true JPS5799628A (en) 1982-06-21
JPS605930B2 JPS605930B2 (en) 1985-02-14

Family

ID=16006116

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17600980A Expired JPS605930B2 (en) 1980-12-12 1980-12-12 Optical device for photographing the inside of a car windshield and the car body alike

Country Status (1)

Country Link
JP (1) JPS605930B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0519572Y2 (en) * 1986-09-30 1993-05-24

Also Published As

Publication number Publication date
JPS605930B2 (en) 1985-02-14

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