FR1098179A - Enhancements to viewers and similar devices - Google Patents

Enhancements to viewers and similar devices

Info

Publication number
FR1098179A
FR1098179A FR1098179DA FR1098179A FR 1098179 A FR1098179 A FR 1098179A FR 1098179D A FR1098179D A FR 1098179DA FR 1098179 A FR1098179 A FR 1098179A
Authority
FR
France
Prior art keywords
viewers
enhancements
similar devices
similar
devices
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)
Inventor
Adrien Poncet
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 filed Critical
Application granted granted Critical
Publication of FR1098179A publication Critical patent/FR1098179A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/02—Viewing or reading apparatus
    • G02B27/022—Viewing apparatus
    • G02B27/024—Viewing apparatus comprising a light source, e.g. for viewing photographic slides, X-ray transparancies
    • G02B27/025—Viewing apparatus comprising a light source, e.g. for viewing photographic slides, X-ray transparancies and magnifying means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR1098179D 1954-01-12 1954-01-12 Enhancements to viewers and similar devices Expired FR1098179A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1098179T 1954-01-12

Publications (1)

Publication Number Publication Date
FR1098179A true FR1098179A (en) 1955-07-19

Family

ID=9619001

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1098179D Expired FR1098179A (en) 1954-01-12 1954-01-12 Enhancements to viewers and similar devices

Country Status (1)

Country Link
FR (1) FR1098179A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2876674A (en) * 1957-02-18 1959-03-10 Gerhard J Ohlhaver Opaque picture viewer with angled lens
US3244468A (en) * 1961-05-05 1966-04-05 Bausch & Lomb Diorama having visual acuity targets
US4379618A (en) * 1981-03-16 1983-04-12 Tall Marion A Magnifier viewer and stand
US4568148A (en) * 1983-11-03 1986-02-04 Onanian Richard A Hand-held collapsible microscope system
US5572371A (en) * 1991-06-14 1996-11-05 Micromap Limited Viewer assemblies and viewable material adapted thereto

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2876674A (en) * 1957-02-18 1959-03-10 Gerhard J Ohlhaver Opaque picture viewer with angled lens
US3244468A (en) * 1961-05-05 1966-04-05 Bausch & Lomb Diorama having visual acuity targets
US4379618A (en) * 1981-03-16 1983-04-12 Tall Marion A Magnifier viewer and stand
US4568148A (en) * 1983-11-03 1986-02-04 Onanian Richard A Hand-held collapsible microscope system
US5572371A (en) * 1991-06-14 1996-11-05 Micromap Limited Viewer assemblies and viewable material adapted thereto

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