GB608892A - Improvements in or relating to optical lens assemblies - Google Patents

Improvements in or relating to optical lens assemblies

Info

Publication number
GB608892A
GB608892A GB5437/46A GB543746A GB608892A GB 608892 A GB608892 A GB 608892A GB 5437/46 A GB5437/46 A GB 5437/46A GB 543746 A GB543746 A GB 543746A GB 608892 A GB608892 A GB 608892A
Authority
GB
United Kingdom
Prior art keywords
lens
elements
balancing
relating
optical lens
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
GB5437/46A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB608892A publication Critical patent/GB608892A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • 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)
  • Lenses (AREA)

Abstract

608,892. Lens systems. GARUTSO, S. E. Feb. 21, 1946, Nos. 5437 and 5438. Convention dates, March 7, 1945, and Oct. 25, 1945. [Class 97 (i)] To increase the depth of field of a lens and to produce an improved stereoscopic effect, an objective has associated therewith one or more balancing lens elements, each of which has a central non-refractive area and a peripheral refractive zone. Fig. 4 shows an objective comprising elements 22, 23, 24a, 24b and balancing elements A, B, C, D comprising biconvex lenses having a central circular aperture. A triplet lens is also described having before it a single balancing element. Specification 335,696, [Class 97 (i)], is referred to.
GB5437/46A 1945-03-07 1946-02-21 Improvements in or relating to optical lens assemblies Expired GB608892A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US608892XA 1945-03-07 1945-03-07

Publications (1)

Publication Number Publication Date
GB608892A true GB608892A (en) 1948-09-22

Family

ID=22032368

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5437/46A Expired GB608892A (en) 1945-03-07 1946-02-21 Improvements in or relating to optical lens assemblies

Country Status (1)

Country Link
GB (1) GB608892A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2153552A (en) * 1984-01-26 1985-08-21 Hajime Industries Object inspection apparatus
EP2133723A1 (en) * 2007-03-27 2009-12-16 Itochu Aviation Co., Ltd. Optical plate for imaging camera

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2153552A (en) * 1984-01-26 1985-08-21 Hajime Industries Object inspection apparatus
EP2133723A1 (en) * 2007-03-27 2009-12-16 Itochu Aviation Co., Ltd. Optical plate for imaging camera
EP2133723A4 (en) * 2007-03-27 2010-08-11 Itochu Aviat Co Ltd Optical plate for imaging camera
US8004776B2 (en) 2007-03-27 2011-08-23 Tadashi Aruga Optical plate for an imaging camera
EP2824495A1 (en) * 2007-03-27 2015-01-14 Itochu Aviation Co., Ltd. Optical plate for imaging camera

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