YU34462B - Magnifier with a relative opening larger than f/l, an ang e field greater than 2 x 25 and a pupil distance greater than 0.9 f - Google Patents

Magnifier with a relative opening larger than f/l, an ang e field greater than 2 x 25 and a pupil distance greater than 0.9 f

Info

Publication number
YU34462B
YU34462B YU27/73A YU2773A YU34462B YU 34462 B YU34462 B YU 34462B YU 27/73 A YU27/73 A YU 27/73A YU 2773 A YU2773 A YU 2773A YU 34462 B YU34462 B YU 34462B
Authority
YU
Yugoslavia
Prior art keywords
magnifier
ang
pupil distance
opening larger
relative opening
Prior art date
Application number
YU27/73A
Other languages
English (en)
Other versions
YU2773A (en
Inventor
Versteeg Frits Johan
Frits Johan Versteeg
Original Assignee
Optische Ind De Oude Delft Nv
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 Optische Ind De Oude Delft Nv filed Critical Optische Ind De Oude Delft Nv
Publication of YU2773A publication Critical patent/YU2773A/xx
Publication of YU34462B publication Critical patent/YU34462B/xx

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B25/00—Eyepieces; Magnifying glasses
    • G02B25/001—Eyepieces

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
  • Eyeglasses (AREA)
YU27/73A 1972-01-14 1973-01-08 Magnifier with a relative opening larger than f/l, an ang e field greater than 2 x 25 and a pupil distance greater than 0.9 f YU34462B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7200567,A NL172892C (nl) 1972-01-14 1972-01-14 Loupe.

Publications (2)

Publication Number Publication Date
YU2773A YU2773A (en) 1978-12-31
YU34462B true YU34462B (en) 1979-07-10

Family

ID=19815164

Family Applications (1)

Application Number Title Priority Date Filing Date
YU27/73A YU34462B (en) 1972-01-14 1973-01-08 Magnifier with a relative opening larger than f/l, an ang e field greater than 2 x 25 and a pupil distance greater than 0.9 f

Country Status (11)

Country Link
US (1) US3823999A (it)
JP (1) JPS5716331B2 (it)
CH (1) CH550411A (it)
DE (1) DE2300203C2 (it)
FR (1) FR2167945B1 (it)
GB (1) GB1404793A (it)
IL (1) IL40954A (it)
IT (1) IT978111B (it)
NL (1) NL172892C (it)
SE (1) SE376804B (it)
YU (1) YU34462B (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1537276A (en) * 1975-12-18 1978-12-29 Pilkington Perkin Elmer Ltd Lenses
NL7602197A (nl) * 1976-03-03 1977-09-06 Optische Ind De Oude Delft Nv Loupe.
JPS6018966B2 (ja) * 1977-11-16 1985-05-14 オリンパス光学工業株式会社 内視鏡用写真接眼レンズ
CH651942A5 (de) * 1979-11-09 1985-10-15 Kern & Co Ag Optisches system fuer nachtsichtgeraet mit bildverstaerker oder bildwandler.
US7804651B2 (en) * 2008-11-25 2010-09-28 Itt Manufacturing Enterprises, Inc. Flat field eyepiece

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1193267B (de) * 1961-08-05 1965-05-20 Zeiss Carl Fa Weitwinkelokular
DE1237355B (de) * 1964-11-06 1967-03-23 Rodenstock Optik G Siebenlinsige Lupe
US3612662A (en) * 1970-07-13 1971-10-12 Xerox Corp Eyepiece having a wide field of view and a large eye relief
US3658412A (en) * 1970-10-01 1972-04-25 Chrysler Corp Wide angle biocular eyepiece

Also Published As

Publication number Publication date
JPS4880052A (it) 1973-10-26
YU2773A (en) 1978-12-31
CH550411A (de) 1974-06-14
FR2167945A1 (it) 1973-08-24
US3823999A (en) 1974-07-16
GB1404793A (en) 1975-09-03
IL40954A (en) 1975-04-25
DE2300203A1 (de) 1973-07-26
JPS5716331B2 (it) 1982-04-05
FR2167945B1 (it) 1977-07-22
SE376804B (it) 1975-06-09
NL7200567A (it) 1973-07-17
NL172892C (nl) 1983-11-01
IT978111B (it) 1974-09-20
NL172892B (nl) 1983-06-01
IL40954A0 (en) 1973-01-30
DE2300203C2 (de) 1982-09-09

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