GB125430A - Improvements in and relating to Optical Eyepieces. - Google Patents

Improvements in and relating to Optical Eyepieces.

Info

Publication number
GB125430A
GB125430A GB1013716A GB1013716A GB125430A GB 125430 A GB125430 A GB 125430A GB 1013716 A GB1013716 A GB 1013716A GB 1013716 A GB1013716 A GB 1013716A GB 125430 A GB125430 A GB 125430A
Authority
GB
United Kingdom
Prior art keywords
lens
crown
eye
lenses
relating
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
GB1013716A
Inventor
Alfred Taylor
Harold Dennis Taylor
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
Priority to GB1013716A priority Critical patent/GB125430A/en
Publication of GB125430A publication Critical patent/GB125430A/en
Expired legal-status Critical Current

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)

Abstract

125,430. Taylor, A., and Taylor, H. D. July 19, 1916. Lenses .-In eyepieces consisting of a field-lens and an eye-lens, the eye-lens consists of a doubleconvex crown lens cemented between two meniscus flint lenses of substantially equal power. The combined focal length of the meniscus lenses may be about 1º times the focal length of the crown lens, and the radius of the surface of the crown lens next to the eye is preferably about 1<7/8> times that of the other surface; the refractive index of the crown lens is about 1.514 and the " nu-value " 54.5. Optical data are given in the Specification.
GB1013716A 1916-07-19 1916-07-19 Improvements in and relating to Optical Eyepieces. Expired GB125430A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1013716A GB125430A (en) 1916-07-19 1916-07-19 Improvements in and relating to Optical Eyepieces.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1013716A GB125430A (en) 1916-07-19 1916-07-19 Improvements in and relating to Optical Eyepieces.

Publications (1)

Publication Number Publication Date
GB125430A true GB125430A (en) 1919-04-24

Family

ID=32344468

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1013716A Expired GB125430A (en) 1916-07-19 1916-07-19 Improvements in and relating to Optical Eyepieces.

Country Status (1)

Country Link
GB (1) GB125430A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2946259A (en) * 1956-06-22 1960-07-26 Ruettiger Justin Solid oculars

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2946259A (en) * 1956-06-22 1960-07-26 Ruettiger Justin Solid oculars

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