CH485237A - Fresnel field lens - Google Patents

Fresnel field lens

Info

Publication number
CH485237A
CH485237A CH903968A CH903968A CH485237A CH 485237 A CH485237 A CH 485237A CH 903968 A CH903968 A CH 903968A CH 903968 A CH903968 A CH 903968A CH 485237 A CH485237 A CH 485237A
Authority
CH
Switzerland
Prior art keywords
field lens
fresnel field
fresnel
lens
field
Prior art date
Application number
CH903968A
Other languages
German (de)
Inventor
Karl Dipl Phys Schiele
Original Assignee
Rollei Werke Franke Heidecke
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 Rollei Werke Franke Heidecke filed Critical Rollei Werke Franke Heidecke
Publication of CH485237A publication Critical patent/CH485237A/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
CH903968A 1967-07-12 1968-06-17 Fresnel field lens CH485237A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP1267A DE1267966B (en) 1967-07-12 1967-07-12 Fresnel field lens for single lens reflex cameras

Publications (1)

Publication Number Publication Date
CH485237A true CH485237A (en) 1970-01-31

Family

ID=5659689

Family Applications (1)

Application Number Title Priority Date Filing Date
CH903968A CH485237A (en) 1967-07-12 1968-06-17 Fresnel field lens

Country Status (4)

Country Link
CH (1) CH485237A (en)
DE (1) DE1267966B (en)
GB (1) GB1196817A (en)
SE (1) SE338708B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2065919B (en) * 1979-11-07 1984-10-17 Canon Kk Focussing screen
DE3714830A1 (en) * 1987-05-05 1988-11-17 Leitz Ernst Gmbh COMBINED LIGHT-FIELD-DARK-FIELD REFLECTED LIGHTING DEVICE
DE4023192A1 (en) * 1990-07-20 1992-01-30 Heckler & Koch Gmbh AFOCAL OPTICAL IMAGING SYSTEM
SE9500746D0 (en) * 1995-03-01 1995-03-01 Hasselblad Ab Victor Device and method for facilitating this focusing of a camera

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1171728B (en) * 1962-09-17 1964-06-04 Elbe Kamera Gmbh Field lens with different focal lengths for single lens reflex cameras

Also Published As

Publication number Publication date
SE338708B (en) 1971-09-13
DE1267966B (en) 1968-05-09
GB1196817A (en) 1970-07-01

Similar Documents

Publication Publication Date Title
AT284505B (en) Contact lens
FR1518841A (en) Projector
CH506087A (en) Cinematographic projector
AT305023B (en) 35mm camera
CH472679A (en) lens
CH467468A (en) Cinematographic projector
AT272696B (en) Anamorphic lens
AT287340B (en) Anamorphic lens
AT319049B (en) Movie projector
CH477014A (en) Movie projector
CH477700A (en) Photographic lens
CH485237A (en) Fresnel field lens
CH467465A (en) Cinematographic projector
CH486714A (en) Slide projector
CH474081A (en) Cinematographic projector
CH490690A (en) Camera
CH466958A (en) camera
CH488207A (en) Cinematographic projector
CH504012A (en) Cinematographic projector
FR92316E (en) Cinematographic film
CH459597A (en) Wide angle lens
CH484438A (en) Photographic lens
AT311694B (en) Slide projector
AT280646B (en) Fast lens
AT268722B (en) Light-absorbing sunglass lens

Legal Events

Date Code Title Description
PL Patent ceased