DE287089C - - Google Patents

Info

Publication number
DE287089C
DE287089C DENDAT287089D DE287089DA DE287089C DE 287089 C DE287089 C DE 287089C DE NDAT287089 D DENDAT287089 D DE NDAT287089D DE 287089D A DE287089D A DE 287089DA DE 287089 C DE287089 C DE 287089C
Authority
DE
Germany
Prior art keywords
lens
focal length
percent
spherical
correction
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
DENDAT287089D
Other languages
German (de)
English (en)
Publication date
Application granted granted Critical
Publication of DE287089C publication Critical patent/DE287089C/de
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
DENDAT287089D Expired DE287089C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE287089C true DE287089C (enrdf_load_stackoverflow) 1915-09-13

Family

ID=542342

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT287089D Expired DE287089C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE287089C (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1299901B (de) * 1961-11-13 1969-07-24 Minnesota Mining & Mfg Projektionsobjektiv
US5596455A (en) * 1995-06-29 1997-01-21 Minnesota Mining And Manufacturing Company Fixed-focus triplet projection lens for overhead projectors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1299901B (de) * 1961-11-13 1969-07-24 Minnesota Mining & Mfg Projektionsobjektiv
US5596455A (en) * 1995-06-29 1997-01-21 Minnesota Mining And Manufacturing Company Fixed-focus triplet projection lens for overhead projectors

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