GB560541A - Improvements in or relating to optical objectives - Google Patents

Improvements in or relating to optical objectives

Info

Publication number
GB560541A
GB560541A GB1395942A GB1395942A GB560541A GB 560541 A GB560541 A GB 560541A GB 1395942 A GB1395942 A GB 1395942A GB 1395942 A GB1395942 A GB 1395942A GB 560541 A GB560541 A GB 560541A
Authority
GB
United Kingdom
Prior art keywords
convergent
objective
taylor
axis
spaced
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
GB1395942A
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.)
Taylor Taylor and Hobson Ltd
Original Assignee
Taylor Taylor and Hobson Ltd
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 Taylor Taylor and Hobson Ltd filed Critical Taylor Taylor and Hobson Ltd
Priority to GB1395942A priority Critical patent/GB560541A/en
Publication of GB560541A publication Critical patent/GB560541A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/02—Telephoto objectives, i.e. systems of the type + - in which the distance from the front vertex to the image plane is less than the equivalent focal length
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

560,541. Optical systems. TAYLOR, TAYLOR, & HOBSON, Ltd., WARMISHAM, A., and HOPKINS, H. H. Oct. 5, 1942, No. 13959. Drawings to Specification. [Class 97 (i)] An objective for profile projection comprises a divergent member between, and spaced from, convergent members, in conjunction with a small stop, or its equivalent, located substantially in a position at which rays parallel to the axis, entrant from the rear, come to a focus on the axis, the objective being corrected for chromatic aberration, astigmatism, and distortion with respect to the stop position, and having a substantially flat image field. The objective may be a triplet comprising simple elements, or one convergent member may be compound or divided into spaced components ; the cemented surface of the compound component may be convergent and convex to the front. Magnesium oxide crystal may be used for simple convergent elements. Conditions for radii, refractive indices, and overall length, and complete data for seven examples are set out. Specifications 444,350 and 550,754 are referred to.
GB1395942A 1942-10-05 1942-10-05 Improvements in or relating to optical objectives Expired GB560541A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1395942A GB560541A (en) 1942-10-05 1942-10-05 Improvements in or relating to optical objectives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1395942A GB560541A (en) 1942-10-05 1942-10-05 Improvements in or relating to optical objectives

Publications (1)

Publication Number Publication Date
GB560541A true GB560541A (en) 1944-04-07

Family

ID=10032472

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1395942A Expired GB560541A (en) 1942-10-05 1942-10-05 Improvements in or relating to optical objectives

Country Status (1)

Country Link
GB (1) GB560541A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2729231A1 (en) * 1995-01-06 1996-07-12 Samsung Aerospace Ind OBJECTIVE SYSTEM FOR VIEWING APPARATUS WITH SEPARATE-HEAD TYPE LOAD COUPLING DEVICE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2729231A1 (en) * 1995-01-06 1996-07-12 Samsung Aerospace Ind OBJECTIVE SYSTEM FOR VIEWING APPARATUS WITH SEPARATE-HEAD TYPE LOAD COUPLING DEVICE

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