FR860192A - Collimator refinements - Google Patents

Collimator refinements

Info

Publication number
FR860192A
FR860192A FR860192DA FR860192A FR 860192 A FR860192 A FR 860192A FR 860192D A FR860192D A FR 860192DA FR 860192 A FR860192 A FR 860192A
Authority
FR
France
Prior art keywords
refinements
collimator
collimator refinements
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.)
Optique et Precision de Levallois SA
Original Assignee
Optique et Precision de Levallois SA
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 Optique et Precision de Levallois SA filed Critical Optique et Precision de Levallois SA
Application granted granted Critical
Publication of FR860192A publication Critical patent/FR860192A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR860192D 1939-06-16 1939-06-16 Collimator refinements Expired FR860192A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR860192T 1939-06-16

Publications (1)

Publication Number Publication Date
FR860192A true FR860192A (en) 1941-01-08

Family

ID=9332066

Family Applications (1)

Application Number Title Priority Date Filing Date
FR860192D Expired FR860192A (en) 1939-06-16 1939-06-16 Collimator refinements

Country Status (1)

Country Link
FR (1) FR860192A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2725800A (en) * 1952-01-02 1955-12-06 Monotype Corp Ltd Optical systems
FR2478332A1 (en) * 1980-03-12 1981-09-18 Cattelani Claude VARIABLE FOCAL OBJECTIVE AND OPTICAL SYSTEM EQUIPPED WITH SUCH OBJECTIVES FOR THE PRODUCTION OF SPECIAL EFFECTS ON MOVIES
US4776335A (en) * 1985-10-18 1988-10-11 Kowa Company Ltd. Laser spot projector

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2725800A (en) * 1952-01-02 1955-12-06 Monotype Corp Ltd Optical systems
FR2478332A1 (en) * 1980-03-12 1981-09-18 Cattelani Claude VARIABLE FOCAL OBJECTIVE AND OPTICAL SYSTEM EQUIPPED WITH SUCH OBJECTIVES FOR THE PRODUCTION OF SPECIAL EFFECTS ON MOVIES
EP0036341A1 (en) * 1980-03-12 1981-09-23 Claude Cattelani Optical system for the realization of special effects on films
US4776335A (en) * 1985-10-18 1988-10-11 Kowa Company Ltd. Laser spot projector

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