Patent US3721170A successfully refreshed from Google Patents.
US3721170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for adapting a reflex camera to use with a monocular microscope
Assignee: Polaroid Corp
•
Filing: 1972-04-25
•
Granted: 1973-03-20
•
Expires: 1992-04-25
Abstract
Abstract An apparatus for attaching a reflex camera, with an automatic exposure control, to a standard monocular microscope is disclosed. The apparatus includes a self-centering clamp to attach it to the draw tube of a monocular microscope and a support for holding the camera in alignment with the optic axis of the microscope. The support contains an eyepiece modified to provide a way of operating the camera''s automatic exposure control and an optional polarizer for dark field microscopy. It does not interfere with the camera''s automatic operation.
Inventors
- 👤 B Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:22
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/36; G02B21/361; G02B21/362; G03; G03B; G03B17/00; G03B17/48
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
211 words
An apparatus for attaching an automatic reflex camera, having an automatic exposure control, to a monocular microscope, comprising: an eye lens; a field lens, situate below said eye lens on a common optic axis, the combination of said eye lens and said field lens functioning as a microscope eyepiece; a beam splitter positioned between said eye lens and said field lens to reflect a small amount of the light incident thereon towards a mirror; a mirror, situate to the side of said optic axis, for reflecting said small amount of light parallel to said optic axis and into a condensing lens; a condensing lens positioned to refract the light incident thereon into a photocell of said automatic exposure control; a housing to retain the foregoing elements in the recited relations with each other and to exclude extraneous light therefrom; guide means, inside said housing and proximate said field lens, for aligning said optic axis with the axis of said monocular microscope; self-centering clamp means, at the lowermost part of said housing and aligned with said guide means, for attaching said housing to said draw tube; and a pair of brackets extending upwardly from the sides of said housing for holding said camera over said eye lens and in optical alignment therewith.
Claim 2
Independent Claim
211 words
An apparatus for attaching an automatic reflex camera, having an automatic exposure control, to a monocular microscope, comprising: an eye lens; a field lens, situate below said eye lens on a common optic axis, the combination of said eye lens and said field lens functioning as a microscope eyepiece; a beam splitter positioned between said eye lens and said field lens to reflect a small amount of the light incident thereon towards a mirror; a mirror, situate to the side of said optic axis, for reflecting said small amount of light parallel to said optic axis and into a condensing lens; a condensing lens positioned to refract the light incident thereon into a photocell of said automatic exposure control; a housing to retain the foregoing elements in the recited relations with each other and to exclude extraneous light therefrom; guide means, inside said housing and proximate said field lens, for aligning said optic axis with the axis of said monocular microscope; self-centering clamp means, at the lowermost part of said housing and aligned with said guide means, for attaching said housing to said draw tube; and a pair of brackets extending upwardly from the sides of said housing for holding said camera over said eye lens and in optical alignment therewith.
Claim 3
Dependent Claim
32 words
The apparatus described in claim 1, further comprising a linear polarizing filter and means for removably inserting it in the path of light passing between said field lens and said beam splitter.
References Cited (Backward Citations)
US2659268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |