GB695352A - Improvements in and relating to microscopes and microscope objectives - Google Patents
Improvements in and relating to microscopes and microscope objectivesInfo
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Microscoopes, Condenser (AREA)
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.
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)
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 |
-
1949
- 1949-05-09 GB GB1233549A patent/GB695352A/en not_active Expired
Cited By (2)
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 |
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Frs | Non-Spherical Surfaces |