SE7714278L - OPTICAL APPARATUS - Google Patents

OPTICAL APPARATUS

Info

Publication number
SE7714278L
SE7714278L SE7714278A SE7714278A SE7714278L SE 7714278 L SE7714278 L SE 7714278L SE 7714278 A SE7714278 A SE 7714278A SE 7714278 A SE7714278 A SE 7714278A SE 7714278 L SE7714278 L SE 7714278L
Authority
SE
Sweden
Prior art keywords
image
grooves
viewer
view
enlarged
Prior art date
Application number
SE7714278A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE425579B (en
Inventor
R J Freeman
Original Assignee
Vision Eng
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 Vision Eng filed Critical Vision Eng
Publication of SE7714278L publication Critical patent/SE7714278L/en
Publication of SE425579B publication Critical patent/SE425579B/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0081—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for altering, e.g. enlarging, the entrance or exit pupil
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B21/00—Microscopes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Microscoopes, Condenser (AREA)
  • Lenses (AREA)

Abstract

The output aperture of a normal microscope generally has only a limited diameter, with the result that the eye of the viewer must be in a precisely defined position in order to observe the image. Multilens elements are already known with the aid of which it is possible by rotation to view a completely enlarged field, but with the disadvantage of a degraded image quality at the image centre. The invention eliminates this disadvantage by means of an essentially planar optical device, corresponding sets of parallel grooves being present on two parallel surfaces (42, 44) of the device in such a way that the grooves in one surface are arranged transverse to the grooves in the other surface. The action of the device provided with grooves consists in the provision of an enlarged aperture with perfect image quality, specifically both in the state of rest and during rotation of the device about an axis (46). The viewer (50) sees an enlarged image with a complete field of view. The viewer can easily change the position of his head without the complete field of view thereby being lost. <IMAGE>
SE7714278A 1977-01-20 1977-12-15 OPTICAL SYSTEM SE425579B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB228577A GB1586701A (en) 1977-01-20 1977-01-20 Disc with line transmitters

Publications (2)

Publication Number Publication Date
SE7714278L true SE7714278L (en) 1978-07-21
SE425579B SE425579B (en) 1982-10-11

Family

ID=9736875

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7714278A SE425579B (en) 1977-01-20 1977-12-15 OPTICAL SYSTEM

Country Status (7)

Country Link
JP (1) JPS5393024A (en)
CA (1) CA1098352A (en)
CH (1) CH619791A5 (en)
DE (1) DE2801262C2 (en)
FR (1) FR2378293A1 (en)
GB (1) GB1586701A (en)
SE (1) SE425579B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3224227C1 (en) * 1982-06-29 1983-12-15 C. Reichert Optische Werke AG, 1170 Wien Projection device for microscopes
FR2638858B1 (en) * 1988-11-04 1991-02-08 Rossignol Gerard OPTO-MECHANICAL THREE-DIMENSIONAL IMAGE PROJECTION AND OBSERVATION DEVICE
GB9310077D0 (en) * 1993-05-17 1993-06-30 Freeman Robin J Optical instrument
US6028704A (en) * 1993-05-17 2000-02-22 Freeman; Robin John Optical instrument and optical element thereof
US6608720B1 (en) 1997-06-02 2003-08-19 Robin John Freeman Optical instrument and optical element thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3453035A (en) * 1963-11-04 1969-07-01 Diffraction Ltd Inc Optical system with diffraction grating screen
GB1275917A (en) * 1968-12-12 1972-06-01 Vision Eng Improvements in high magnification optical apparatus
JPS5019936A (en) * 1973-06-28 1975-03-03

Also Published As

Publication number Publication date
GB1586701A (en) 1981-03-25
DE2801262A1 (en) 1978-07-27
CA1098352A (en) 1981-03-31
CH619791A5 (en) 1980-10-15
FR2378293A1 (en) 1978-08-18
DE2801262C2 (en) 1984-01-19
JPS5393024A (en) 1978-08-15
SE425579B (en) 1982-10-11
FR2378293B3 (en) 1980-10-03

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