JPS5518115A - Inspecting device - Google Patents

Inspecting device

Info

Publication number
JPS5518115A
JPS5518115A JP9046878A JP9046878A JPS5518115A JP S5518115 A JPS5518115 A JP S5518115A JP 9046878 A JP9046878 A JP 9046878A JP 9046878 A JP9046878 A JP 9046878A JP S5518115 A JPS5518115 A JP S5518115A
Authority
JP
Japan
Prior art keywords
range
camera
inspection
area
brightness
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
JP9046878A
Other languages
Japanese (ja)
Inventor
Yoshitoshi Ito
Katsumi Takami
Kazuhiro Yoshida
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9046878A priority Critical patent/JPS5518115A/en
Priority to SE7904919A priority patent/SE439205B/en
Priority to DE19792930193 priority patent/DE2930193C2/en
Publication of JPS5518115A publication Critical patent/JPS5518115A/en
Pending legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
    • A61B1/042—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances characterised by a proximal camera, e.g. a CCD camera
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • G02B23/2407—Optical details
    • G02B23/2461—Illumination
    • G02B23/2469—Illumination using optical fibres

Abstract

PURPOSE: To obtain a picture of the even brightness on the TV monitor by providing an optical filter in front of the TV camera in the inspecting device composed by attaching the TV camera to the fiber scope.
CONSTITUTION: An illuminator is attached to the tip of the fiber scope, and thus the range of inspection is limited to the range of illumination. In general, the center of the illuminated area has a higher brightness than the circumference area as shown in the figure like a hanging bell. When monitoring via the TV camera, the range of decision is limited up to the contrast ratio of about 16:1. Accordingly, the range of inspection is decreased greatly if the area of the highest brightness is set as the standard. In this connection, an optical filter featuring a higher transmission factor at the circumference area than the center part is installed in front of the TV camera. As a result, the contrast of the incident light is compressed to increase the range of inspection.
COPYRIGHT: (C)1980,JPO&Japio
JP9046878A 1978-07-26 1978-07-26 Inspecting device Pending JPS5518115A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP9046878A JPS5518115A (en) 1978-07-26 1978-07-26 Inspecting device
SE7904919A SE439205B (en) 1978-07-26 1979-06-06 A VISUAL INQUIRY APPARATUS
DE19792930193 DE2930193C2 (en) 1978-07-26 1979-07-25 endoscope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9046878A JPS5518115A (en) 1978-07-26 1978-07-26 Inspecting device

Publications (1)

Publication Number Publication Date
JPS5518115A true JPS5518115A (en) 1980-02-08

Family

ID=13999422

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9046878A Pending JPS5518115A (en) 1978-07-26 1978-07-26 Inspecting device

Country Status (3)

Country Link
JP (1) JPS5518115A (en)
DE (1) DE2930193C2 (en)
SE (1) SE439205B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56164687A (en) * 1980-05-23 1981-12-17 Hitachi Ltd Mobile type visual monitor
JPS5826276U (en) * 1981-08-10 1983-02-19 三菱重工業株式会社 Scanning remote viewing device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3433889A1 (en) * 1984-09-14 1986-03-27 Siemens AG, 1000 Berlin und 8000 München Optical arrangement for object detection
DE3912720C2 (en) * 1988-10-27 1992-08-20 Lemke Norbert ENDOSCOPE AND METHOD FOR STERILIZING SUCH AN ENDOSCOPE

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5720168Y2 (en) * 1973-05-31 1982-04-30
FR2312790A1 (en) * 1975-05-27 1976-12-24 Thomson Csf OPTICAL IMAGE GAIN SPATIAL NON-UNIFORMITY CORRECTIVE FILM
JPS5336980A (en) * 1976-09-16 1978-04-05 Olympus Optical Co Light source for endscope

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56164687A (en) * 1980-05-23 1981-12-17 Hitachi Ltd Mobile type visual monitor
JPS5826276U (en) * 1981-08-10 1983-02-19 三菱重工業株式会社 Scanning remote viewing device

Also Published As

Publication number Publication date
DE2930193A1 (en) 1980-02-07
SE7904919L (en) 1980-01-27
SE439205B (en) 1985-06-03
DE2930193C2 (en) 1982-04-29

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