FR739081A - Improvements relating to optical compensators - Google Patents

Improvements relating to optical compensators

Info

Publication number
FR739081A
FR739081A FR739081DA FR739081A FR 739081 A FR739081 A FR 739081A FR 739081D A FR739081D A FR 739081DA FR 739081 A FR739081 A FR 739081A
Authority
FR
France
Prior art keywords
improvements relating
optical compensators
compensators
optical
relating
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
Other languages
French (fr)
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.)
LEVENTHAL PATENTS Inc
Original Assignee
LEVENTHAL PATENTS 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 LEVENTHAL PATENTS Inc filed Critical LEVENTHAL PATENTS Inc
Application granted granted Critical
Publication of FR739081A publication Critical patent/FR739081A/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
    • G03B41/00—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor
    • G03B41/02—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor using non-intermittently running film
    • G03B41/04—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor using non-intermittently running film with optical compensator
    • G03B41/08—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor using non-intermittently running film with optical compensator with rotating transmitting member

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Variable Magnification In Projection-Type Copying Machines (AREA)
  • Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
  • Studio Devices (AREA)
FR739081D 1931-06-25 1932-06-25 Improvements relating to optical compensators Expired FR739081A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US403956XA 1931-06-25 1931-06-25

Publications (1)

Publication Number Publication Date
FR739081A true FR739081A (en) 1933-01-05

Family

ID=21910755

Family Applications (1)

Application Number Title Priority Date Filing Date
FR739081D Expired FR739081A (en) 1931-06-25 1932-06-25 Improvements relating to optical compensators

Country Status (3)

Country Link
DE (1) DE625632C (en)
FR (1) FR739081A (en)
GB (1) GB403956A (en)

Also Published As

Publication number Publication date
GB403956A (en) 1933-12-27
DE625632C (en) 1936-02-13

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