Patent US3736041A successfully refreshed from Google Patents.
US3736041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microscope with selectively operable illuminating and viewing means
Assignee: Individual
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Filing: 1971-04-19
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Granted: 1973-05-29
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Expires: 1991-04-19
Abstract
Abstract A microscope comprises a body including an opening and containing a condenser and an objective and an eyepiece constituting an optical system for viewing of a subject positioned between the condenser and the objective. The body has an aperture on the optical axis of the condenser on the side of the condenser which is remote from the objective. Reflector means, including two angled reflector elements, are disposed in said body and are movable linearly transversely of the optical axis of the reflector at the side of the condenser remote from the objective. A light source is positioned in the body. The reflector means has a first position in which it intercepts the optical axis of the condenser so as to direct onto the condenser light rays from the light source, and a second position in which it directs thereonto light rays originating externally of the body, and a third position in which it does not intercept the optical axis of the condenser, thereby to permit viewing, through the aperture, of a subject magnified by the condenser.
Inventors
- 👤 J N Mcarthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:43
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
221 words
A microscope comprising a body including an opening and containing a condenser and an objective and an eyepiece constituting an optical system for viewing of a subject positioned between the condenser and the objective, said body having an aperture on the optical axis of the condenser on the side of the condenser which is remote from the objective, reflector means including two angled reflector elements disposed within said body and movable linearly transversely of the optical axis of the reflector at the side of the condenser remote from the objective, a light source positioned in said body, said reflector means having a first position in which a first of said elements of the reflector means intercepts the optical axis of the condenser so as to direct onto the condenser light rays arriving on said element from said light source, said reflector means having a second position in which the second of said elements of the reflector means intercepts the optical axis of the condenser so as to direct onto the condenser light rays originating externally of the body and passing into the body through said opening therein, said reflector means having a third position in which neither of said elements intercepts the optical axis of the condenser, thereby to permit viewing through said aperture of a subject magnified by the condenser.
Claim 2
Dependent Claim
221 words
A microscope comprising a body including an opening and containing a condenser and an objective and an eyepiece constituting an optical system for viewing of a subject positioned between the condenser and the objective, said body having an aperture on the optical axis of the condenser on the side of the condenser which is remote from the objective, reflector means including two angled reflector elements disposed within said body and movable linearly transversely of the optical axis of the reflector at the side of the condenser remote from the objective, a light source positioned in said body, said reflector means having a first position in which a first of said elements of the reflector means intercepts the optical axis of the condenser so as to direct onto the condenser light rays arriving on said element from said light source, said reflector means having a second position in which the second of said elements of the reflector means intercepts the optical axis of the condenser so as to direct onto the condenser light rays originating externally of the body and passing into the body through said opening therein, said reflector means having a third position in which neither of said elements intercepts the optical axis of the condenser, thereby to permit viewing through said aperture of a subject magnified by the condenser.
Claim 3
Dependent Claim
21 words
A microscope, as claimed in claim 1, wherein said source of light is coupled to said reflector means for movement therewith.
Claim 4
Dependent Claim
68 words
A microscope, as claimed in claim 2, wherein said source of light comprises an electric light bulb, and wherein switch means are provided for completing a current-feed circuit to said light bulb, said switch means being arranged to be closed to complete the current-feed circuit when said reflector means is in said first position, and to open when said reflector means is in said second and third positions.
Claim 5
Dependent Claim
29 words
A microscope, as claimed in claim 3, wherein said switch means comprises co-operating switch contact elements mounted respectively on the body and on a carrier for said reflector means.
Claim 6
Dependent Claim
166 words
A microscope, as claimed in claim 1, wherein said body comprises means for supporting a microscope slide at a location between the condenser and the objective, said supporting means including a first surface means to carry a microscope slide disposed normal to the optical axis of the objective in a first position of rotaTion of said slide about said axis, said supporting means including a second surface means to carry said slide when said slide is disposed in a second position of rotation about said axis, the respective planes of said first and second surface means being spaced along the optical axis of the objective by approximately the thickness of the microscope slide, the respective planes of the first and second surface means being spaced along the optical axis of the objective in relation to the objective such that a subject on said slide will be in focus when said slide is inverted on said first surface means and when obverted on said second surface means.
Claim 7
Dependent Claim
36 words
A microscope, as claimed in claim 1, comprising a plurality of objectives mounted on a slide movable transversely in said body to permit a selected objective to be aligned with the optical axis of the condenser.
Claim 8
Dependent Claim
23 words
A microscope, as claimed in claim 1, comprising means in said body for adjusting the position of said objective along its optical axis.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |