US4469411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quadrant conical-lens microscope
Assignee: Individual
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Filing: 1981-08-10
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Granted: 1984-09-04
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Expires: 2001-08-10
Abstract
Abstract The disclosure is a microscope in which magnification is produced by multiple quadrant stages of conical lenses. Conical lenses receive and emit parallel rays of light, and they can be stacked vertically in series to produce multiple magnification which increases at an exponential rate and which extends into the hundreds of thousands and millions. The rays emitted by the conical lens do not converge and cross as they do with the spherical lens, and there is no inverting of images. It is possible, therefore, to divide the lens into quadrants, that is, into four 90° longitudinal sectors which are cemented together prior to grinding and then separated after grinding. The quadrants are mounted vertically in the microscopic tube to produce images of the same magnification as four whole lenses though in a field of view which is reduced in size to one fourth. Moreover, the quadrants can be rotated into and out of the line of vision, thereby making possible a number of magnification settings equal to the number of quadrants being used. A single-tube four-stage quadrant microscope with stage and eyepiece magnification of 5× will produce enlarged images of 5×, 25×, 125×, 625× and 3125×. A double-tube, eight-stage quadrant microscope will produce the above enlarged images plus images of 15,625×, 78,125×, 390,625× (hypothetical) and 1,953,125× (hypothetical). The disclosure is the latter.
Inventors
- 👤 John E. Clegg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:44
CPC Classifications
G; G02; G02B; G02B21/00; G02B13/00; G02B13/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
174 words
A quadrant stage lens comprising three quadrant component lenses; (a) with each quadrant component lens being a 90° longitudinal sector of a whole component lens, with each quadrant component lens having one or two quadrant concave or convex conical sections which refract light rays at prescribed angles, with all quadrant conical sections being aligned on a common axis which is parallel to the light rays entering and emanating from the quadrant component lenses, with all surfaces of the quadrant component lenses not used for the refraction and transmission of light rays being opaque. (b) with the quadrant stage lens which is assembled from three quadrant component lenses being bounded by a cylindrical wall, two plane longitudinal walls extending from the cylindrical wall inward to the common axis of the quadrant component lenses, where the two plane longitudinal walls abut at an angle of 90°, and two basal end walls which are perpendicular to the cylindrical wall and the two plane longitudinal walls and which are located at opposite ends of the quadrant stage lens.
Claim 2
Dependent Claim
174 words
A quadrant stage lens comprising three quadrant component lenses; (a) with each quadrant component lens being a 90° longitudinal sector of a whole component lens, with each quadrant component lens having one or two quadrant concave or convex conical sections which refract light rays at prescribed angles, with all quadrant conical sections being aligned on a common axis which is parallel to the light rays entering and emanating from the quadrant component lenses, with all surfaces of the quadrant component lenses not used for the refraction and transmission of light rays being opaque. (b) with the quadrant stage lens which is assembled from three quadrant component lenses being bounded by a cylindrical wall, two plane longitudinal walls extending from the cylindrical wall inward to the common axis of the quadrant component lenses, where the two plane longitudinal walls abut at an angle of 90°, and two basal end walls which are perpendicular to the cylindrical wall and the two plane longitudinal walls and which are located at opposite ends of the quadrant stage lens.
Claim 3
Dependent Claim
144 words
A tubular metal jacket for mounting of the quadrant stage lens, with the inner tubular wall of the jacket having the same degree of curvature as the cylindrical wall of the quadrant stage lens, with two plane longitudinal walls extending from the inner tubular wall of the jacket inward so as to enclose portions of the two plane longitudinal walls of the quadrant stage lens, with two basal end walls which enclose portions of the two basal end walls of the quadrant stage lens, with the tubular portion of the jacket having the same degree of curvature as the microscopic tube in which it is mounted, and with the tubular portion of the jacket forming an arc larger than 180° so as to be free to rotate around the common axis of the quadrant stage lens and the central axis of the microscopic tube.
Claim 4
Dependent Claim
144 words
A tubular metal jacket for mounting of the quadrant stage lens, with the inner tubular wall of the jacket having the same degree of curvature as the cylindrical wall of the quadrant stage lens, with two plane longitudinal walls extending from the inner tubular wall of the jacket inward so as to enclose portions of the two plane longitudinal walls of the quadrant stage lens, with two basal end walls which enclose portions of the two basal end walls of the quadrant stage lens, with the tubular portion of the jacket having the same degree of curvature as the microscopic tube in which it is mounted, and with the tubular portion of the jacket forming an arc larger than 180° so as to be free to rotate around the common axis of the quadrant stage lens and the central axis of the microscopic tube.
Claim 5
Dependent Claim
100 words
A single microscopic tube for mounting of quadrant stage lenses and their tubular metal jackets, with the inside diameter of the microscopic tube being equal to the outside diameter of the tubular metal jackets, and with circular slots in the walls of the microscopic tube to provide access to the tubular metal jackets for means of rotating the quadrant stage lenses into and out of the line of vision of the quadrant stage lenses from outside the microscopic tube, with a circular slot being located at each level in the microscopic tube in which a quadrant stage lens is mounted.
Claim 6
Dependent Claim
100 words
A single microscopic tube for mounting of quadrant stage lenses and their tubular metal jackets, with the inside diameter of the microscopic tube being equal to the outside diameter of the tubular metal jackets, and with circular slots in the walls of the microscopic tube to provide access to the tubular metal jackets for means of rotating the quadrant stage lenses into and out of the line of vision of the quadrant stage lenses from outside the microscopic tube, with a circular slot being located at each level in the microscopic tube in which a quadrant stage lens is mounted.
Claim 7
Dependent Claim
120 words
A double microscopic tube comprising two adjoined single microscopic tubes with intervening walls removed, for mounting of two adjacent rows of quadrant stage lenses and their tubular metal jackets, with the inside diameter of the two adjoined single microscopic tubes being equal to the outside diameter of the tubular metal jackets, and with circular slots in the walls of the double microscopic tube to provide access to the tubular metal jackets for means of rotating the quadrant stage lenses into and out of the line of vision of the quadrant stage lenses from outside the double microscopic tube, with two circular slots being located at each level in the double microscopic tube in which two quadrant stage lenses are mounted.
Claim 8
Dependent Claim
120 words
A double microscopic tube comprising two adjoined single microscopic tubes with intervening walls removed, for mounting of two adjacent rows of quadrant stage lenses and their tubular metal jackets, with the inside diameter of the two adjoined single microscopic tubes being equal to the outside diameter of the tubular metal jackets, and with circular slots in the walls of the double microscopic tube to provide access to the tubular metal jackets for means of rotating the quadrant stage lenses into and out of the line of vision of the quadrant stage lenses from outside the double microscopic tube, with two circular slots being located at each level in the double microscopic tube in which two quadrant stage lenses are mounted.
References Cited (Backward Citations)
US2034096A
Cited
US4277148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-04 | 1988-03-05 | 1988-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-04 | 1992-03-05 | 1992-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-04 | 1996-03-05 | 1996-09-04 | $7700.00 | Window Closed / Lapsed |