GB695352A - Improvements in and relating to microscopes and microscope objectives - Google Patents

Improvements in and relating to microscopes and microscope objectives

Info

Publication number
GB695352A
GB695352A GB1233549A GB1233549A GB695352A GB 695352 A GB695352 A GB 695352A GB 1233549 A GB1233549 A GB 1233549A GB 1233549 A GB1233549 A GB 1233549A GB 695352 A GB695352 A GB 695352A
Authority
GB
United Kingdom
Prior art keywords
mirror
effected
screw
objective
concave
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
GB1233549A
Inventor
Maurice Hugh Frederick Wilkins
William Etienne Seeds
Keith Patrick Norris
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB1233549A priority Critical patent/GB695352A/en
Publication of GB695352A publication Critical patent/GB695352A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B21/00—Microscopes
    • G02B21/02—Objectives
    • G02B21/04—Objectives involving mirrors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B21/00—Microscopes
    • G02B21/02—Objectives

Abstract

695,352. Microscopes. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Aug. 9, 1950 [May 9, 1949], No. 12335/49. Class 97 (i). A microscope includes an objective consisting of a concave and a smaller convex mirror, the concave mirror having a central aperture for the passage of light rays and the ratio of the radii of curvature of the mirrors being in the range 3.5: 1 to 30: 1. As shown, the concave mirror 1a is mounted in a semi-cylindrical member 1 between which and the grooved extremities of a semi-cylindrical member 2 attached to the microscope tube are steel balls 3. The member 1 is thus slidable relatively to member 2 and is held in place by a steel spring 4 attached to the member 2 and to an annular member 2a integral with member 2. Such relative movement may be effected by rotation of a screw 2b which threads through member 2a and engages one end of a pin 2c mounted in a recess in member 1. The convex mirror 5a is carried by an arm 5b fast on an annular member 5 between which and member 2a are three steel balls 6, one of which rests in the space formed between registering grooves in the member and located adjacent a screw 9 whereby movement of the convex mirror can be effected in a direction normal to the axis thereof. Rotational movement of the mirror, about said one steel ball 6 as pivot is effected by a screw 7 and pin 7a, such rotational movement being against the pressure of springs 8 connected to members 2 and 2a. Data are given for three examples of the objective, and graphs are furnished from which the radius of the convex mirror, the focal length of the objective, the working distance and the mirror separation can be determined for a particular radius of the concave mirror.
GB1233549A 1949-05-09 1949-05-09 Improvements in and relating to microscopes and microscope objectives Expired GB695352A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1233549A GB695352A (en) 1949-05-09 1949-05-09 Improvements in and relating to microscopes and microscope objectives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1233549A GB695352A (en) 1949-05-09 1949-05-09 Improvements in and relating to microscopes and microscope objectives

Publications (1)

Publication Number Publication Date
GB695352A true GB695352A (en) 1953-08-12

Family

ID=10002594

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1233549A Expired GB695352A (en) 1949-05-09 1949-05-09 Improvements in and relating to microscopes and microscope objectives

Country Status (1)

Country Link
GB (1) GB695352A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2210471A (en) * 1987-09-25 1989-06-07 Spectra Tech Inc High magnification reflecting microscope objective having a dual magnification mode and zoom magnification capability

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2210471A (en) * 1987-09-25 1989-06-07 Spectra Tech Inc High magnification reflecting microscope objective having a dual magnification mode and zoom magnification capability
GB2210471B (en) * 1987-09-25 1992-02-26 Spectra Tech Inc High magnification reflecting microscope objective having a dual magnification mode and zoom magnification capability

Similar Documents

Publication Publication Date Title
US5463495A (en) Aiming telescope
US3484149A (en) Center focusing prism binocular and reticle
US2143011A (en) Optical indicator
GB695352A (en) Improvements in and relating to microscopes and microscope objectives
US2424283A (en) Optical system for telescopes and binoculars
Hawkins et al. An improved type of Schmidt camera
US3135817A (en) Microscope focus adjustment means utilizing compound cam
US3064529A (en) Microscope having rotatable and yieldable lens casing
US2571743A (en) Reflecting image-forming optical system for instruments
US4266849A (en) Optical objectives
US2843013A (en) Alignment telescope
US2909964A (en) Alignment telescope
US2683393A (en) Reflecting objective for microscopes
JPH02302712A (en) Transmission light illuminator for microscope
GB1201527A (en) Micro-hardness tester for attachment to microscopes
US2539256A (en) Telescope sight and reticule and cam adjusting means therefor
US3671109A (en) Focusing mechanism for catadioptric objective
GB1161374A (en) An Adjustable Specimen device for an Electron Microscope
US1167991A (en) Illuminating means for telescope cross-hairs.
US2638675A (en) Drafting machine
US2667693A (en) Surveying instrument
GB660865A (en) Holders for objectives for microscopes
US3709606A (en) Device for adjusting angle of inclination of reference mirror for interferometer
GB118170A (en) Improvements in or relating to Adjusting Devices for Scientific Instruments.
US2155570A (en) Focusing mechanism