US3713720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microscopic optical comparison device
Assignee: Symbionics Inc
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Filing: 1970-09-14
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Granted: 1973-01-30
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Expires: 1990-09-14
Abstract
Abstract A microscopic optical comparison device in which objects to be compared are arranged in side by side relation and when viewed through a binocular microscope system are caused to appear as one object with each object being viewed by a respective one of the observers eyes. The objects are intermittently and successively illuminated from a substantially point source of light which is intercepted by a rotating shutter to first block the light from one of the objects following which it blocks the light from the other object. Differences in the objects being compared appear as pulses of the missing detail of the object.
Inventors
- 👤 D Craig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:54
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/0004; G02B21/0016
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
190 words
A binocular microscopic optical comparison device including first and second microscopes mounted inside by side relation, platform means for supporting first and second objects in spaced apart aligned relation, said first microscope providing a view of only said first object, said second microscope providing a view of only said second object, said first and second microscopes having respective eyepieces spaced for binocular viewing by an observer, whereby the two views are fused by the observer''s brain into a single image, illuminating means aligned with said platform means for illuminating said first and second objects, and a single vane cyclically driven shutter positioned between said illuminating means and said platform means, said shutter having its axis of rotation positioned centrally of the light beam from said illuminating means, so that on each cycle of rotation the light to the first object is obstructed, then both objects are illuminated, and then the light to the second object is obstructed, the simultaneous viewing of both objects during portions of each cycle enabling the observer''s brain to maintain image fusion while still detecting differences between the two objects by pulsations of the fused image.
Claim 2
Dependent Claim
190 words
A binocular microscopic optical comparison device including first and second microscopes mounted inside by side relation, platform means for supporting first and second objects in spaced apart aligned relation, said first microscope providing a view of only said first object, said second microscope providing a view of only said second object, said first and second microscopes having respective eyepieces spaced for binocular viewing by an observer, whereby the two views are fused by the observer''s brain into a single image, illuminating means aligned with said platform means for illuminating said first and second objects, and a single vane cyclically driven shutter positioned between said illuminating means and said platform means, said shutter having its axis of rotation positioned centrally of the light beam from said illuminating means, so that on each cycle of rotation the light to the first object is obstructed, then both objects are illuminated, and then the light to the second object is obstructed, the simultaneous viewing of both objects during portions of each cycle enabling the observer''s brain to maintain image fusion while still detecting differences between the two objects by pulsations of the fused image.
Claim 3
Dependent Claim
190 words
A binocular microscopic optical comparison device including first and second microscopes mounted inside by side relation, platform means for supporting first and second objects in spaced apart aligned relation, said first microscope providing a view of only said first object, said second microscope providing a view of only said second object, said first and second microscopes having respective eyepieces spaced for binocular viewing by an observer, whereby the two views are fused by the observer''s brain into a single image, illuminating means aligned with said platform means for illuminating said first and second objects, and a single vane cyclically driven shutter positioned between said illuminating means and said platform means, said shutter having its axis of rotation positioned centrally of the light beam from said illuminating means, so that on each cycle of rotation the light to the first object is obstructed, then both objects are illuminated, and then the light to the second object is obstructed, the simultaneous viewing of both objects during portions of each cycle enabling the observer''s brain to maintain image fusion while still detecting differences between the two objects by pulsations of the fused image.
Claim 4
Dependent Claim
190 words
A binocular microscopic optical comparison device including first and second microscopes mounted inside by side relation, platform means for supporting first and second objects in spaced apart aligned relation, said first microscope providing a view of only said first object, said second microscope providing a view of only said second object, said first and second microscopes having respective eyepieces spaced for binocular viewing by an observer, whereby the two views are fused by the observer''s brain into a single image, illuminating means aligned with said platform means for illuminating said first and second objects, and a single vane cyclically driven shutter positioned between said illuminating means and said platform means, said shutter having its axis of rotation positioned centrally of the light beam from said illuminating means, so that on each cycle of rotation the light to the first object is obstructed, then both objects are illuminated, and then the light to the second object is obstructed, the simultaneous viewing of both objects during portions of each cycle enabling the observer''s brain to maintain image fusion while still detecting differences between the two objects by pulsations of the fused image.
Claim 5
Dependent Claim
31 words
A comparison device as claimed in claim 1, wherein the axis of rotation of said shutter is at right angles to the path of the light beam from said illuminating means.
Claim 6
Dependent Claim
14 words
A comparison device as claimed in claim 2, wherein said shutter is substantially rectangular.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |