GB691610A - Improvements relating to optical objectives - Google Patents

Improvements relating to optical objectives

Info

Publication number
GB691610A
GB691610A GB1805650A GB1805650A GB691610A GB 691610 A GB691610 A GB 691610A GB 1805650 A GB1805650 A GB 1805650A GB 1805650 A GB1805650 A GB 1805650A GB 691610 A GB691610 A GB 691610A
Authority
GB
United Kingdom
Prior art keywords
block
portions
optical
concave
tunnel
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
GB1805650A
Inventor
James Dyson
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB1805650A priority Critical patent/GB691610A/en
Publication of GB691610A publication Critical patent/GB691610A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/02—Catoptric systems, e.g. image erecting and reversing system
    • G02B17/06—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror
    • G02B17/0605—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror using two curved mirrors
    • G02B17/061—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror using two curved mirrors on-axis systems with at least one of the mirrors having a central aperture
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0856—Catadioptric systems comprising a refractive element with a reflective surface, the reflection taking place inside the element, e.g. Mangin mirrors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0856—Catadioptric systems comprising a refractive element with a reflective surface, the reflection taking place inside the element, e.g. Mangin mirrors
    • G02B17/086—Catadioptric systems comprising a refractive element with a reflective surface, the reflection taking place inside the element, e.g. Mangin mirrors wherein the system is made of a single block of optical material, e.g. solid catadioptric systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B21/00—Microscopes
    • G02B21/02—Objectives
    • G02B21/04—Objectives involving mirrors

Landscapes

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

Abstract

691,610. Optical objectives. ASSOCIATED ELECTRICAL INDUSTRIES, Ltd. June 15, 1951 [July 19, 1950], No. 18056/50. Class 97 (i). The reflecting surfaces of a reflecting optical objective are formed on opposite faces of a transparent block so that one surface is concave with respect to the object and has a central transparent portion whilst the other surface is convex with respect to the image, the block being split at right-angles to the optical axis into two portions each including one of said surfaces whereby each surface may be formed separately and subsequently assembled in correct position by uniting the two portions of the block. In the form shown, the transparent block is split along a plane or curved surface P into portions A, B which are formed with the concave and convex reflecting surfaces M<SP>1</SP>, M<SP>2</SP> respectively. An axial tunnel H is formed in portion B, this tunnel terminating at a refracting portion S of surface P which portion is concave towards the image 1<SP>1</SP> and corrects for coma. A lens N is mounted in the tunnel H, preferably in a step, to correct for chromatic aberrations. The portions A, B of the block may be united by cementing or optical contacting. Data for one example are given.
GB1805650A 1950-07-19 1950-07-19 Improvements relating to optical objectives Expired GB691610A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1805650A GB691610A (en) 1950-07-19 1950-07-19 Improvements relating to optical objectives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1805650A GB691610A (en) 1950-07-19 1950-07-19 Improvements relating to optical objectives

Publications (1)

Publication Number Publication Date
GB691610A true GB691610A (en) 1953-05-20

Family

ID=10105884

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1805650A Expired GB691610A (en) 1950-07-19 1950-07-19 Improvements relating to optical objectives

Country Status (1)

Country Link
GB (1) GB691610A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5993044U (en) * 1982-12-15 1984-06-23 サンクス株式会社 Photoelectric switch device
JPS59155821A (en) * 1982-11-04 1984-09-05 Idec Izumi Corp Optical lens
EP3514602A1 (en) * 2018-01-23 2019-07-24 Universitatea Stefan cel Mare Suceava - Romania Microscope lens with automatic focus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59155821A (en) * 1982-11-04 1984-09-05 Idec Izumi Corp Optical lens
JPS5993044U (en) * 1982-12-15 1984-06-23 サンクス株式会社 Photoelectric switch device
JPH0112741Y2 (en) * 1982-12-15 1989-04-13
EP3514602A1 (en) * 2018-01-23 2019-07-24 Universitatea Stefan cel Mare Suceava - Romania Microscope lens with automatic focus

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