GB509308A - Improvements in or relating to the production of visible images - Google Patents

Improvements in or relating to the production of visible images

Info

Publication number
GB509308A
GB509308A GB938/38A GB93838A GB509308A GB 509308 A GB509308 A GB 509308A GB 938/38 A GB938/38 A GB 938/38A GB 93838 A GB93838 A GB 93838A GB 509308 A GB509308 A GB 509308A
Authority
GB
United Kingdom
Prior art keywords
image
screen
light
infra
transparency
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
GB938/38A
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.)
Kodak Ltd
Original Assignee
Kodak 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 Kodak Ltd filed Critical Kodak Ltd
Priority to GB938/38A priority Critical patent/GB509308A/en
Publication of GB509308A publication Critical patent/GB509308A/en
Expired 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/003—Cine-projectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Filters (AREA)

Abstract

509,308. Photographic processes. KODAK, Ltd., SELWYN, E. W. H., and BOWYER, C. H. Jan. 11, 1938, No. 938. [Classes 97 (i) and 98 (ii)] A reversed monochromatic light-image of an object or transparency, i.e., an image in which the bright parts of the object appear dark and vice versa, is produced by projecting an image in substantially infra red light on a luminescent screen maintained in a luminescent state by radiation consisting substantially of wavelengths shorter than the visible, the luminiscence being reduced by the infra-red light. As shown an image of a transparency 1 is projected on to a fluorescent screen 8 by a source 2 of infra-red light, condensers 3, 4, a filter 6 and projection lens 5 and mirror 7, the screen being simultaneously irradiated by ultra violet light from a source 9, the intensity of which is controlled by a variable light-wedge 10 or by a diaphragm. The infra red beam may be similarly controlled. The screen 8 may be carried on a transparent or opaque support, and the former case a filter dyestuff is provided to absorb the ultra-violet light passing through. The transparency 6, which may be a negative, may be placed in contact with the screen to produce a positive image.
GB938/38A 1938-01-11 1938-01-11 Improvements in or relating to the production of visible images Expired GB509308A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB938/38A GB509308A (en) 1938-01-11 1938-01-11 Improvements in or relating to the production of visible images

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB938/38A GB509308A (en) 1938-01-11 1938-01-11 Improvements in or relating to the production of visible images

Publications (1)

Publication Number Publication Date
GB509308A true GB509308A (en) 1939-07-11

Family

ID=9713144

Family Applications (1)

Application Number Title Priority Date Filing Date
GB938/38A Expired GB509308A (en) 1938-01-11 1938-01-11 Improvements in or relating to the production of visible images

Country Status (1)

Country Link
GB (1) GB509308A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2461848A (en) * 1944-11-20 1949-02-15 Simons Harry Davis Method of testing camera synchronizers
US2482815A (en) * 1946-03-26 1949-09-27 Univ Rochester Infrared photography
US2501446A (en) * 1947-04-08 1950-03-21 Richard W Justice Light polarizing apparatus for analyzing pictures
US2521953A (en) * 1946-10-19 1950-09-12 Eastman Kodak Co Method and apparatus for inspecting light-sensitive coatings
US2523306A (en) * 1947-09-23 1950-09-26 Herman F Kaiser Application of radiography to infrared phosphors
US2541976A (en) * 1947-11-22 1951-02-20 Magnaflux Corp Instrument for inspecting the interior of cavities
DE966434C (en) * 1950-03-08 1957-08-08 Auergesellschaft Ag Process for the production of positive images from photographic negatives
DE1019557B (en) * 1953-04-04 1957-11-14 Rer Nat Habil Ernst Streck Dr Method and apparatus for reversing the brightness values of photographic transparencies
US2988978A (en) * 1957-06-17 1961-06-20 Logetronics Inc Photographic printing
US3079503A (en) * 1962-03-29 1963-02-26 Optomechanisms Inc Negative to positive microscope
US3158478A (en) * 1960-08-31 1964-11-24 Melpar Inc Method of photographic dodging
US3166998A (en) * 1959-11-19 1965-01-26 Watson Electronics & Engineeri Photographic dodging method and apparatus
US3558886A (en) * 1969-04-23 1971-01-26 David Carver Method of discovering imperfections in bonded laminated structures

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2461848A (en) * 1944-11-20 1949-02-15 Simons Harry Davis Method of testing camera synchronizers
US2482815A (en) * 1946-03-26 1949-09-27 Univ Rochester Infrared photography
US2521953A (en) * 1946-10-19 1950-09-12 Eastman Kodak Co Method and apparatus for inspecting light-sensitive coatings
US2501446A (en) * 1947-04-08 1950-03-21 Richard W Justice Light polarizing apparatus for analyzing pictures
US2523306A (en) * 1947-09-23 1950-09-26 Herman F Kaiser Application of radiography to infrared phosphors
US2541976A (en) * 1947-11-22 1951-02-20 Magnaflux Corp Instrument for inspecting the interior of cavities
DE966434C (en) * 1950-03-08 1957-08-08 Auergesellschaft Ag Process for the production of positive images from photographic negatives
DE1019557B (en) * 1953-04-04 1957-11-14 Rer Nat Habil Ernst Streck Dr Method and apparatus for reversing the brightness values of photographic transparencies
US2988978A (en) * 1957-06-17 1961-06-20 Logetronics Inc Photographic printing
US3166998A (en) * 1959-11-19 1965-01-26 Watson Electronics & Engineeri Photographic dodging method and apparatus
US3158478A (en) * 1960-08-31 1964-11-24 Melpar Inc Method of photographic dodging
US3079503A (en) * 1962-03-29 1963-02-26 Optomechanisms Inc Negative to positive microscope
US3558886A (en) * 1969-04-23 1971-01-26 David Carver Method of discovering imperfections in bonded laminated structures

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