FR1274153A - Nouvel amplificateur afocal à coefficient d'amplification variable - Google Patents

Nouvel amplificateur afocal à coefficient d'amplification variable

Info

Publication number
FR1274153A
FR1274153A FR844765A FR844765A FR1274153A FR 1274153 A FR1274153 A FR 1274153A FR 844765 A FR844765 A FR 844765A FR 844765 A FR844765 A FR 844765A FR 1274153 A FR1274153 A FR 1274153A
Authority
FR
France
Prior art keywords
afocal
amplifier
new
amplification coefficient
variable amplification
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
FR844765A
Other languages
English (en)
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 Pathe SA
Original Assignee
Kodak Pathe 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 Kodak Pathe SA filed Critical Kodak Pathe SA
Priority to FR844765A priority Critical patent/FR1274153A/fr
Application granted granted Critical
Publication of FR1274153A publication Critical patent/FR1274153A/fr
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
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/143—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only
    • G02B15/1431—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only the first group being positive
    • G02B15/143105—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only the first group being positive arranged +-+

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR844765A 1960-11-23 1960-11-23 Nouvel amplificateur afocal à coefficient d'amplification variable Expired FR1274153A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR844765A FR1274153A (fr) 1960-11-23 1960-11-23 Nouvel amplificateur afocal à coefficient d'amplification variable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR844765A FR1274153A (fr) 1960-11-23 1960-11-23 Nouvel amplificateur afocal à coefficient d'amplification variable

Publications (1)

Publication Number Publication Date
FR1274153A true FR1274153A (fr) 1961-10-20

Family

ID=8743284

Family Applications (1)

Application Number Title Priority Date Filing Date
FR844765A Expired FR1274153A (fr) 1960-11-23 1960-11-23 Nouvel amplificateur afocal à coefficient d'amplification variable

Country Status (1)

Country Link
FR (1) FR1274153A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1276362B (de) * 1964-06-30 1968-08-29 Rathenower Optische Werke Veb Vario-Vorsatz fuer kinematographische Aufnahme und Wiedergabe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1276362B (de) * 1964-06-30 1968-08-29 Rathenower Optische Werke Veb Vario-Vorsatz fuer kinematographische Aufnahme und Wiedergabe

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