DE181029C - - Google Patents

Info

Publication number
DE181029C
DE181029C DENDAT181029D DE181029DA DE181029C DE 181029 C DE181029 C DE 181029C DE NDAT181029 D DENDAT181029 D DE NDAT181029D DE 181029D A DE181029D A DE 181029DA DE 181029 C DE181029 C DE 181029C
Authority
DE
Germany
Prior art keywords
yellow
telescope
twilight
lenses
eyepiece
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.)
Active
Application number
DENDAT181029D
Other languages
German (de)
English (en)
Publication of DE181029C publication Critical patent/DE181029C/de
Active legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/12Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices with means for image conversion or intensification

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Eyeglasses (AREA)
  • Lenses (AREA)
DENDAT181029D Active DE181029C (show.php)

Publications (1)

Publication Number Publication Date
DE181029C true DE181029C (show.php)

Family

ID=445244

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT181029D Active DE181029C (show.php)

Country Status (1)

Country Link
DE (1) DE181029C (show.php)

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