FR848853A - Photo magnifier with synchronous autofocus for two lenses of different focal length - Google Patents

Photo magnifier with synchronous autofocus for two lenses of different focal length

Info

Publication number
FR848853A
FR848853A FR848853DA FR848853A FR 848853 A FR848853 A FR 848853A FR 848853D A FR848853D A FR 848853DA FR 848853 A FR848853 A FR 848853A
Authority
FR
France
Prior art keywords
autofocus
lenses
synchronous
focal length
different focal
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.)
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
Application granted granted Critical
Publication of FR848853A publication Critical patent/FR848853A/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
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/34—Means for automatic focusing therefor
    • G03B27/36—Means for automatic focusing therefor by mechanical connections, e.g. by cam, by linkage
    • G03B27/40—Means for automatic focusing therefor by mechanical connections, e.g. by cam, by linkage adapted for use with lenses of different focal length

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR848853D 1938-01-28 1939-01-14 Photo magnifier with synchronous autofocus for two lenses of different focal length Expired FR848853A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT848853X 1938-01-28

Publications (1)

Publication Number Publication Date
FR848853A true FR848853A (en) 1939-11-08

Family

ID=11325413

Family Applications (1)

Application Number Title Priority Date Filing Date
FR848853D Expired FR848853A (en) 1938-01-28 1939-01-14 Photo magnifier with synchronous autofocus for two lenses of different focal length

Country Status (1)

Country Link
FR (1) FR848853A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE750967C (en) * 1941-04-13 1952-12-22 Ig Farbenindustrie Ag Photographic enlarger
DE1110512B (en) * 1958-09-25 1961-07-06 Walter Klatt Photographic enlarger
DE1112694B (en) * 1956-12-14 1961-08-10 Dresden Feinmess Magnifying device with focusing for several lenses with different focal lengths

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE750967C (en) * 1941-04-13 1952-12-22 Ig Farbenindustrie Ag Photographic enlarger
DE1112694B (en) * 1956-12-14 1961-08-10 Dresden Feinmess Magnifying device with focusing for several lenses with different focal lengths
DE1110512B (en) * 1958-09-25 1961-07-06 Walter Klatt Photographic enlarger

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