JPS56147564A - Video camera - Google Patents

Video camera

Info

Publication number
JPS56147564A
JPS56147564A JP5122180A JP5122180A JPS56147564A JP S56147564 A JPS56147564 A JP S56147564A JP 5122180 A JP5122180 A JP 5122180A JP 5122180 A JP5122180 A JP 5122180A JP S56147564 A JPS56147564 A JP S56147564A
Authority
JP
Japan
Prior art keywords
shutter
pickup tube
solenoid
optical path
video camera
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
JP5122180A
Other languages
Japanese (ja)
Inventor
Hiroyuki Takimoto
Takashi Kuniyoshi
Tatsuzo Ujo
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.)
Canon Inc
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Priority to JP5122180A priority Critical patent/JPS56147564A/en
Priority to DE3115092A priority patent/DE3115092A1/en
Publication of JPS56147564A publication Critical patent/JPS56147564A/en
Priority to US06/550,517 priority patent/US4492982A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/75—Circuitry for compensating brightness variation in the scene by influencing optical camera components

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To prevent baking of a photo conductive film in advance, by shutting off the incidence of light to an image pickup tube with the shutter mechanism while the pickup tube reaches the stable operating state, after the application of a power supply to the circuits of a video camera. CONSTITUTION:Between the image pickup tube 14 and the objective, the shutter 15 to shield the optical path is provided. The rotating shaft 16 rotates the shutter 15 by taking the shaft as the center. The spring 17 fixed with one end with the fixed pin provided with the camera main body is latched with the shutter 15. The member 18 controlling the rotation of the shutter 15 is inserted to the solenoid 19. At start, the beam current of the tube 14 is a suitable amount and the current flows to the solenoid 19 until the stable operating state can be detected, and the optical path is held in cut-off state with the shutter 15.
JP5122180A 1980-04-18 1980-04-18 Video camera Pending JPS56147564A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP5122180A JPS56147564A (en) 1980-04-18 1980-04-18 Video camera
DE3115092A DE3115092A1 (en) 1980-04-18 1981-04-14 VIDEO CAMERA
US06/550,517 US4492982A (en) 1980-04-18 1983-11-10 Video camera image tube burn-in prevention apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5122180A JPS56147564A (en) 1980-04-18 1980-04-18 Video camera

Publications (1)

Publication Number Publication Date
JPS56147564A true JPS56147564A (en) 1981-11-16

Family

ID=12880869

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5122180A Pending JPS56147564A (en) 1980-04-18 1980-04-18 Video camera

Country Status (1)

Country Link
JP (1) JPS56147564A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61109423U (en) * 1984-12-24 1986-07-11
JPS61184132A (en) * 1985-02-13 1986-08-16 Toyota Motor Corp Protecting device for meter displaying element
JPS6249125U (en) * 1986-03-12 1987-03-26
JPS62158415U (en) * 1986-03-31 1987-10-08

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61109423U (en) * 1984-12-24 1986-07-11
JPS61184132A (en) * 1985-02-13 1986-08-16 Toyota Motor Corp Protecting device for meter displaying element
JPH0557935B2 (en) * 1985-02-13 1993-08-25 Toyota Motor Co Ltd
JPS6249125U (en) * 1986-03-12 1987-03-26
JPS62158415U (en) * 1986-03-31 1987-10-08

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