Patent US3582215A successfully refreshed from Google Patents.
US3582215A
Expired / Lapsed
US
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Optical comparison device
Assignee: International Standard Electric Corp
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Filing: 1969-02-13
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Granted: 1971-06-01
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Expires: 1989-02-13
Abstract
Abstract A comparison device in which objects to be compared are arranged in side-by-side relation and when viewed through a mirror system are caused to appear as one object with each object being viewed by a respective one of the observer''s eyes. A rotating shutter intermittently and successively interrupts the path of light to each eye so that the fused images are actually viewed successively rather than simultaneously. Differences in the objects being compared appear as pulses of the missing detail of the object.
Inventors
- 👤 International Standard El Corp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:13
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/26; G01B11/27; G01B11/272
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
98 words
An optical comparison device comprising a support for supporting in aligned relation a pair of spaced-apart objects to be compared, a hood mounted on and positioned above said support, said hood having a pair of spaced-apart eye openings arranged to generally overlie said support, means for directing an image from one object on said support through one of said eye openings and from the other object through the other of said eye openings, a translucent shutter between said objects and said eye openings, and means for actuating said shutter to alternately diffuse the image light from said objects.
Claim 2
Dependent Claim
98 words
An optical comparison device comprising a support for supporting in aligned relation a pair of spaced-apart objects to be compared, a hood mounted on and positioned above said support, said hood having a pair of spaced-apart eye openings arranged to generally overlie said support, means for directing an image from one object on said support through one of said eye openings and from the other object through the other of said eye openings, a translucent shutter between said objects and said eye openings, and means for actuating said shutter to alternately diffuse the image light from said objects.
Claim 3
Dependent Claim
29 words
A device as claimed in claim 1 wherein the means for directing an image includes a mirror system for reflecting the light from said objects to the eye openings.
Claim 4
Dependent Claim
24 words
A device as claimed in claim 1 wherein adjustable means are provided on said support for engaging and aligning the edges of said objects.
Claim 5
Dependent Claim
18 words
A device as claimed in claim 1 wherein means are provided on said device for illuminating said objects.
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |