IT990133B - Procedimento ed apparecchiatura per produrre lenti a gradini - Google Patents

Procedimento ed apparecchiatura per produrre lenti a gradini

Info

Publication number
IT990133B
IT990133B IT5182673A IT5182673A IT990133B IT 990133 B IT990133 B IT 990133B IT 5182673 A IT5182673 A IT 5182673A IT 5182673 A IT5182673 A IT 5182673A IT 990133 B IT990133 B IT 990133B
Authority
IT
Italy
Prior art keywords
lenses
procedure
equipment
producing steps
producing
Prior art date
Application number
IT5182673A
Other languages
English (en)
Italian (it)
Original Assignee
Agfa Gevaert Ag
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 Agfa Gevaert Ag filed Critical Agfa Gevaert Ag
Application granted granted Critical
Publication of IT990133B publication Critical patent/IT990133B/it

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)
  • Projection Apparatus (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
IT5182673A 1972-08-05 1973-08-03 Procedimento ed apparecchiatura per produrre lenti a gradini IT990133B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722238753 DE2238753C3 (de) 1972-08-05 1972-08-05 Verfahren und Vorrichtung zur Herstellung von Stufenlinsen

Publications (1)

Publication Number Publication Date
IT990133B true IT990133B (it) 1975-06-20

Family

ID=5852859

Family Applications (1)

Application Number Title Priority Date Filing Date
IT5182673A IT990133B (it) 1972-08-05 1973-08-03 Procedimento ed apparecchiatura per produrre lenti a gradini

Country Status (3)

Country Link
CH (1) CH564783A5 (cs)
DE (1) DE2238753C3 (cs)
IT (1) IT990133B (cs)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107037512B (zh) * 2017-05-19 2023-08-22 首都师范大学 一种高效率衍射透镜

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1772567C3 (de) * 1968-06-04 1981-07-16 Agfa-Gevaert Ag, 5090 Leverkusen Verfahren und Vorrichtung zur Herstellung von Linsenrastern
DE2014982A1 (de) * 1969-04-04 1970-10-15 International Business Machines Corp., Armonk, N.Y. (V.St.A.) Verfahren zur Herstellung einer Fresnelschen Stufenlinse

Also Published As

Publication number Publication date
DE2238753A1 (de) 1974-02-14
DE2238753C3 (de) 1982-02-18
DE2238753B2 (de) 1981-05-27
CH564783A5 (cs) 1975-07-31

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