US3668404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-optical microtransducer comprising diffractive element monolithically integrated with photoelectric device
Assignee: Individual
•
Filing: 1970-09-29
•
Granted: 1972-06-06
•
Expires: 1990-09-29
Abstract
Abstract The position of a photocell is varied along the optical axis of the light distribution generated by a Fresnel optical system. The variation of the position of the photocell is caused by the displacement of a surface area element, thereby translating said displacement into an electrical signal. Two or more of the three components of the above-mentioned arrangement, i.e., light source, Fresnel optics and photocell, can be combined into a compact integrated structure.
Inventors
- 👤 Kurt Lehovec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:35
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/12; G02; G02B; G02B26/00; G02B26/08; G02B26/0875; G02B27/00; G02B27/42; G11B7/08; G11B7/085; H; H10; H10F; H10F99/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
67 words
An integrated monolithic structure of a diffractive optical element and a solid state photoelectric device, said structure comprising a thick substrate transparent to radiation, said photoelectric device substantially thinner than said substrate and located on a surface of said substrate, said diffractive optical element located on the same surface of said substrate, said photoelectric device and said diffractive optical element optically aligned with respect to said radiation.
Claim 2
Dependent Claim
67 words
An integrated monolithic structure of a diffractive optical element and a solid state photoelectric device, said structure comprising a thick substrate transparent to radiation, said photoelectric device substantially thinner than said substrate and located on a surface of said substrate, said diffractive optical element located on the same surface of said substrate, said photoelectric device and said diffractive optical element optically aligned with respect to said radiation.
Claim 3
Dependent Claim
79 words
A substrate substantially transparent to a radiation, a solid electroluminescent emitter of said radiation on one surface of said substrate, a solid sensor for said radiation on the same surface of said substrate laterally displaced from said emitter of radiation, a diffractive optical element on another surface of said substrate, whereby radiation from said emitter is condensed onto said sensor by diffraction on said diffractive optical element, said substrate, said emitter and said sensor constituting an integrated monolithic structure.
Claim 4
Dependent Claim
79 words
A substrate substantially transparent to a radiation, a solid electroluminescent emitter of said radiation on one surface of said substrate, a solid sensor for said radiation on the same surface of said substrate laterally displaced from said emitter of radiation, a diffractive optical element on another surface of said substrate, whereby radiation from said emitter is condensed onto said sensor by diffraction on said diffractive optical element, said substrate, said emitter and said sensor constituting an integrated monolithic structure.
Claim 5
Dependent Claim
67 words
The process of preparing an integratedmonolithic structure of an electro-optical device optically aligned with a diffractive optical element, said process including the steps of i. preparing a transparent slab of material, ii. depositing on a surface of said slab a semiconducting layer, iii. preparing said photoelectric device in or on said semiconducting layer, and iv. preparing said diffractive optical element on a surface of said transparent slab.
Claim 6
Dependent Claim
67 words
The process of preparing an integratedmonolithic structure of an electro-optical device optically aligned with a diffractive optical element, said process including the steps of i. preparing a transparent slab of material, ii. depositing on a surface of said slab a semiconducting layer, iii. preparing said photoelectric device in or on said semiconducting layer, and iv. preparing said diffractive optical element on a surface of said transparent slab.
Claim 7
Dependent Claim
15 words
The process of claim 3 whereby said semiconducting film is grown epitaxially on said slab.
Claim 8
Dependent Claim
11 words
The process of claim 4 whereby said semiconducting film is silicon.
Claim 9
Dependent Claim
11 words
The process of claim 3 whereby said transparent slab contains Al2o3.
Claim 10
Dependent Claim
15 words
The process of claim 3 whereby said photoelectric device is a sensor of said radiation.
Claim 11
Dependent Claim
14 words
The process of claim 7 whereby said sensor contains at least one p-n junction.
Claim 12
Dependent Claim
14 words
The process of claim 3 whereby said diffractive optical element is a zone plate.
Claim 13
Dependent Claim
21 words
The process of claim 3 whereby said zone plate and said photoelectric device are positioned on opposite surfaces of said slab.
References Cited (Backward Citations)
US3569997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |