JPS5526509A - Composite type digital electric shutter - Google Patents

Composite type digital electric shutter

Info

Publication number
JPS5526509A
JPS5526509A JP9891578A JP9891578A JPS5526509A JP S5526509 A JPS5526509 A JP S5526509A JP 9891578 A JP9891578 A JP 9891578A JP 9891578 A JP9891578 A JP 9891578A JP S5526509 A JPS5526509 A JP S5526509A
Authority
JP
Japan
Prior art keywords
shutter
light
iris
lights
lamp
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
JP9891578A
Other languages
Japanese (ja)
Other versions
JPS604444B2 (en
Inventor
Tsukumo Nobusawa
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo Co 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 Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Priority to JP9891578A priority Critical patent/JPS604444B2/en
Publication of JPS5526509A publication Critical patent/JPS5526509A/en
Publication of JPS604444B2 publication Critical patent/JPS604444B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Exposure Control For Cameras (AREA)

Abstract

PURPOSE: To enable phtographing to be performed immediately merely through correction of iris when luminance is inadequate by combining a fixed shutter time restoring device with a photo response shutter time restoring device.
CONSTITUTION: When photographic light is correct light, a corrent light display lamp L2 lights up and the shutter operates as an ordinary coincidence type digital electric shutter. However, when the photographic light is inadequate light of low luminance, the lamp L3 or L4 indicating that it is inadequate light lights up. For example, when only the lamp L3 lights up, the inadequateness is judged to be one step and the iris is opened by one step. When the shutter release is performed, slowest shutter is released by the slow speed fixed shutter time restoring device L. In the case of inadequate light of high luminance, the lamp L1 lights up and therefore it is judged to be inadequateness 1 step and if the shutter is released by closing the iris by 1 step, the highest speed shutter time is obtained by a high speed fixed shutter time restoring device. In this way, photographing may be performed merely by correcting the iris.
COPYRIGHT: (C)1980,JPO&Japio
JP9891578A 1978-08-14 1978-08-14 Composite digital electric shutter Expired JPS604444B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9891578A JPS604444B2 (en) 1978-08-14 1978-08-14 Composite digital electric shutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9891578A JPS604444B2 (en) 1978-08-14 1978-08-14 Composite digital electric shutter

Publications (2)

Publication Number Publication Date
JPS5526509A true JPS5526509A (en) 1980-02-26
JPS604444B2 JPS604444B2 (en) 1985-02-04

Family

ID=14232417

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9891578A Expired JPS604444B2 (en) 1978-08-14 1978-08-14 Composite digital electric shutter

Country Status (1)

Country Link
JP (1) JPS604444B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6211844A (en) * 1986-07-18 1987-01-20 Iwatsu Electric Co Ltd Copy machine exposure control device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0719147U (en) * 1993-09-16 1995-04-07 有限会社パッケージセンター Extrusion container for viscous materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6211844A (en) * 1986-07-18 1987-01-20 Iwatsu Electric Co Ltd Copy machine exposure control device

Also Published As

Publication number Publication date
JPS604444B2 (en) 1985-02-04

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