GB2158960B - Photographic enlarger control - Google Patents

Photographic enlarger control

Info

Publication number
GB2158960B
GB2158960B GB08409773A GB8409773A GB2158960B GB 2158960 B GB2158960 B GB 2158960B GB 08409773 A GB08409773 A GB 08409773A GB 8409773 A GB8409773 A GB 8409773A GB 2158960 B GB2158960 B GB 2158960B
Authority
GB
United Kingdom
Prior art keywords
photographic enlarger
control
enlarger control
photographic
enlarger
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.)
Expired
Application number
GB08409773A
Other versions
GB2158960A (en
Inventor
Joel Matthew Sciamma
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB08409773A priority Critical patent/GB2158960B/en
Publication of GB2158960A publication Critical patent/GB2158960A/en
Application granted granted Critical
Publication of GB2158960B publication Critical patent/GB2158960B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1313—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells specially adapted for a particular application
    • 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
    • G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Liquid Crystal (AREA)
GB08409773A 1984-04-14 1984-04-14 Photographic enlarger control Expired GB2158960B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08409773A GB2158960B (en) 1984-04-14 1984-04-14 Photographic enlarger control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08409773A GB2158960B (en) 1984-04-14 1984-04-14 Photographic enlarger control

Publications (2)

Publication Number Publication Date
GB2158960A GB2158960A (en) 1985-11-20
GB2158960B true GB2158960B (en) 1988-06-02

Family

ID=10559687

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08409773A Expired GB2158960B (en) 1984-04-14 1984-04-14 Photographic enlarger control

Country Status (1)

Country Link
GB (1) GB2158960B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5084727A (en) * 1990-12-21 1992-01-28 Eastman Kodak Company Method and apparatus for photographic exposure using an LCD pad

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3437704A1 (en) * 1984-01-02 1985-07-11 Jenoptik Jena Gmbh, Ddr 6900 Jena RECEIVER UNIT FOR GLARE PROTECTIVE GLASSES
US4615619A (en) * 1984-03-19 1986-10-07 D.O.M. Associates, Inc. Stationary, electrically alterable, optical masking device and spectroscopic apparatus employing same

Also Published As

Publication number Publication date
GB2158960A (en) 1985-11-20

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee