JPS5773726A - Lens diaphragm adjuster - Google Patents

Lens diaphragm adjuster

Info

Publication number
JPS5773726A
JPS5773726A JP15000380A JP15000380A JPS5773726A JP S5773726 A JPS5773726 A JP S5773726A JP 15000380 A JP15000380 A JP 15000380A JP 15000380 A JP15000380 A JP 15000380A JP S5773726 A JPS5773726 A JP S5773726A
Authority
JP
Japan
Prior art keywords
aperture
scale
magnification
circumference
operation ring
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
JP15000380A
Other languages
Japanese (ja)
Inventor
Koji Yamashita
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.)
Dainippon Screen Manufacturing Co Ltd
Original Assignee
Dainippon Screen Manufacturing 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 Dainippon Screen Manufacturing Co Ltd filed Critical Dainippon Screen Manufacturing Co Ltd
Priority to JP15000380A priority Critical patent/JPS5773726A/en
Priority to GB8131285A priority patent/GB2087576B/en
Priority to DE19813141868 priority patent/DE3141868A1/en
Priority to DK467881A priority patent/DK467881A/en
Priority to FR8119902A priority patent/FR2492996A1/en
Publication of JPS5773726A publication Critical patent/JPS5773726A/en
Pending 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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/02—Diaphragms
    • 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
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/323—Copying cameras

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Diaphragms For Cameras (AREA)
  • Indication In Cameras, And Counting Of Exposures (AREA)
  • Exposure Control For Cameras (AREA)

Abstract

PURPOSE: To obtain a small-sized, simplified adjuster by displaying magnification and an aperture value on two members and by making aperture adjustment by moving those members like dials.
CONSTITUTION: A freely rotatable lens aperture operation ring 2, an aperture scale plate 7 having an aperture scale on the circumference of concentric rotation, and a photographic magnification scale plate 6 having a photographic magnification scale on the circumference of the concentric rotation in parallel to the aperture scale are provided. While either one of those members 7 and 6 is coupled with the operation ring 2, the other is fixed and an aperture value and magnification are matched mutually to obtain proper exposure by magnitude variations.
COPYRIGHT: (C)1982,JPO&Japio
JP15000380A 1980-10-25 1980-10-25 Lens diaphragm adjuster Pending JPS5773726A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP15000380A JPS5773726A (en) 1980-10-25 1980-10-25 Lens diaphragm adjuster
GB8131285A GB2087576B (en) 1980-10-25 1981-10-16 Copy camera
DE19813141868 DE3141868A1 (en) 1980-10-25 1981-10-22 Device for controlling a lens diaphragm
DK467881A DK467881A (en) 1980-10-25 1981-10-23 BLENDER CONTROL DEVICE FOR REPRODUCTION CAMERA
FR8119902A FR2492996A1 (en) 1980-10-25 1981-10-23 OPENING ADJUSTMENT DEVICE FOR EXPANDING PHOTOGRAPHIC APPARATUS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15000380A JPS5773726A (en) 1980-10-25 1980-10-25 Lens diaphragm adjuster

Publications (1)

Publication Number Publication Date
JPS5773726A true JPS5773726A (en) 1982-05-08

Family

ID=15487337

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15000380A Pending JPS5773726A (en) 1980-10-25 1980-10-25 Lens diaphragm adjuster

Country Status (5)

Country Link
JP (1) JPS5773726A (en)
DE (1) DE3141868A1 (en)
DK (1) DK467881A (en)
FR (1) FR2492996A1 (en)
GB (1) GB2087576B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5057433A (en) * 1973-09-20 1975-05-19

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE475020C (en) * 1929-04-17 Emil Mueller Device for determining the aperture for raster images
GB831035A (en) * 1957-07-19 1960-03-23 Powers Chemco Inc Stop rationer for photoengraving camera
US3086709A (en) * 1960-02-17 1963-04-23 Simmon Brothers Inc Density control for photographic enlargers
DE1849127U (en) * 1960-10-19 1962-03-29 Jenoptik Jena Gmbh REPRODUCTION LENS WITH A DEVICE FOR DETERMINING AND ADJUSTING THE OPTIMAL APERTURE FOR GRID RECORDS FROM GRID WIDTH, GRID DISTANCE AND IMAGE SCALE.
US3605599A (en) * 1968-07-31 1971-09-20 Carl Ort Camera having lens aperture setting device
DE2642975C2 (en) * 1976-09-24 1978-09-07 Gossen Gmbh, 8520 Erlangen Device for determining the exposure parameter values which ensure the correct exposure of a film when an object is recorded

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5057433A (en) * 1973-09-20 1975-05-19

Also Published As

Publication number Publication date
GB2087576B (en) 1984-09-19
GB2087576A (en) 1982-05-26
DE3141868A1 (en) 1982-05-27
FR2492996B1 (en) 1985-05-24
FR2492996A1 (en) 1982-04-30
DK467881A (en) 1982-04-26

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