US5065015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar radiation sensor for use in an automatic air conditioner
Assignee: Hitachi Ltd
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Filing: 1989-02-15
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Granted: 1991-11-12
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Expires: 2009-02-15
Abstract
Abstract Disclosed is a solar radiation sensor apparatus. A light-blocking plate is provided above the light-receiving surface of a photoelectric element, and has an area smaller than the area of the light-receiving surface. The incident angle sensitivity characteristic of the sensor apparatus can be improved without involving any increase in the external dimensions of the sensor apparatus.
Inventors
- 👤 Hyosei Horiguchi
- 👤 Akira Tezuka
- 👤 Tsuneo Kagohata
- 👤 Toshikazu Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:36
CPC Classifications
B; B60; B60H; B60H3/00; H; H10; H10F; H10F77/00; H10F77/50; B60H1/00; B60H1/00642; B60H1/00735; B60H1/0075; G; G01; G01J; G01J1/00; G01J1/02; G01J1/04; G01J1/0407; G01J1/0437; H10F77/30; H10F77/306; H10F77/331; H10F77/334; G01J1/0204; G01J1/0266
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
109 words
A solar radiation sensor apparatus comprising: a photoelectric element having a light-receiving surface; and a light-blocking plate disposed a predetermined distance above said light-receiving surface and having an area smaller than the area of said light-receiving surface; wherein the predetermined distance and the area of the light-blocking plate are selected such that the light-blocking plate blocks solar radiation from illuminating a portion of the light-receiving surface when an incident angle of the solar radiation is less than a predetermined incident angle and permits the solar radiation to illuminate the entire light-receiving surface when the incident angle of the solar radiation is at least equal to the predetermined incident angle.
Claim 2
Dependent Claim
109 words
A solar radiation sensor apparatus comprising: a photoelectric element having a light-receiving surface; and a light-blocking plate disposed a predetermined distance above said light-receiving surface and having an area smaller than the area of said light-receiving surface; wherein the predetermined distance and the area of the light-blocking plate are selected such that the light-blocking plate blocks solar radiation from illuminating a portion of the light-receiving surface when an incident angle of the solar radiation is less than a predetermined incident angle and permits the solar radiation to illuminate the entire light-receiving surface when the incident angle of the solar radiation is at least equal to the predetermined incident angle.
Claim 3
Dependent Claim
28 words
A solar radiation sensor apparatus according to claim 1, wherein the center of said light-receiving surface and the center of said light-blocking plate are shifted from each other.
Claim 4
Dependent Claim
88 words
A solar radiation sensor apparatus comprising: a photoelectric element having alight-receiving surface; and a light-blocking plate disposed a predetermined distance above said light-receiving surface and having an area smaller than the area of said light-receiving surface; wherein the ratio of the area of said light-blocking plate with respect to the area of said light-receiving surface is between 0.4 to 0.8, and the ratio of the distance between said light-receiving surface and said light-blocking plate with respect to the width of said light-receiving surface is between 0.4 to 1.0.
Claim 5
Dependent Claim
88 words
A solar radiation sensor apparatus comprising: a photoelectric element having alight-receiving surface; and a light-blocking plate disposed a predetermined distance above said light-receiving surface and having an area smaller than the area of said light-receiving surface; wherein the ratio of the area of said light-blocking plate with respect to the area of said light-receiving surface is between 0.4 to 0.8, and the ratio of the distance between said light-receiving surface and said light-blocking plate with respect to the width of said light-receiving surface is between 0.4 to 1.0.
Claim 6
Dependent Claim
28 words
A solar radiation sensor apparatus according to claim 3, wherein the center of said light-receiving surface and the center of said light-blocking plate are shifted from each other.
Claim 7
Dependent Claim
39 words
A solar radiation sensor apparatus according to claim 3, wherein said light-blocking plate is pyramid-shaped, and is disposed with the apex of the pyramid shape being directed to said light-receiving surface, side faces of the pyramid shape being mirror-finished.
Claim 8
Dependent Claim
27 words
A solar radiation sensor apparatus according to claim 5, wherein the center of light-receiving surface and the center of said light-blocking plate are shifted from each other.
Claim 9
Dependent Claim
67 words
A solar radiation sensor apparatus comprising: a photoelectric element having a light-receiving surface; and a light-blocking plate disposed a predetermined distance above said light-receiving surface and having an area smaller than the area of said light-receiving surface; wherein said light-blocking plate is pyramid-shaped, and is disposed with the apex of the pyramid shape being directed to said light-receiving surface, side faces of the pyramid shape being mirror-finished.
Claim 10
Dependent Claim
67 words
A solar radiation sensor apparatus comprising: a photoelectric element having a light-receiving surface; and a light-blocking plate disposed a predetermined distance above said light-receiving surface and having an area smaller than the area of said light-receiving surface; wherein said light-blocking plate is pyramid-shaped, and is disposed with the apex of the pyramid shape being directed to said light-receiving surface, side faces of the pyramid shape being mirror-finished.
Claim 11
Dependent Claim
28 words
A solar radiation sensor apparatus according to claim 7, wherein the center of said light-receiving surface and the center of said light-blocking plate are shifted from each other.
Claim 12
Dependent Claim
66 words
A solar radiation sensor apparatus comprising: a photoelectric element having alight-receiving surface; and a light-blocking plate disposed above said light-receiving surface and having an area smaller than the area of said light-receiving surface, said light-blocking plate being disposed in such a manner that, when the incident angle θ of solar radiation is between 30° and 60°, the entire light-receiving surface is irradiated by the incident rays.
Claim 13
Dependent Claim
66 words
A solar radiation sensor apparatus comprising: a photoelectric element having alight-receiving surface; and a light-blocking plate disposed above said light-receiving surface and having an area smaller than the area of said light-receiving surface, said light-blocking plate being disposed in such a manner that, when the incident angle θ of solar radiation is between 30° and 60°, the entire light-receiving surface is irradiated by the incident rays.
Claim 14
Dependent Claim
95 words
A solar radiation sensor apparatus comprising: a photoelectric-element semiconductor chip having a light-receiving surface; a transparent body which is mold-formed around the entire periphery of said semiconductor chip except said light-receiving surface; a piece of light-blocking tape having an area smaller than the area of said light-receiving surface and serving as a light-blocking plate, said piece of light-blocking tape being adhered to a surface comprising at least one of glass and mold-formed resin, said surface being disposed at a predetermined distance from said light-receiving surface of said semiconductor chip; and leads for supplying electric power.
Claim 15
Dependent Claim
95 words
A solar radiation sensor apparatus comprising: a photoelectric-element semiconductor chip having a light-receiving surface; a transparent body which is mold-formed around the entire periphery of said semiconductor chip except said light-receiving surface; a piece of light-blocking tape having an area smaller than the area of said light-receiving surface and serving as a light-blocking plate, said piece of light-blocking tape being adhered to a surface comprising at least one of glass and mold-formed resin, said surface being disposed at a predetermined distance from said light-receiving surface of said semiconductor chip; and leads for supplying electric power.
Claim 16
Dependent Claim
61 words
A solar radiation sensor apparatus according to claim 10, wherein the ratio of the area of said light-blocking plate with respect to the area of said light-receiving surface is between 0.4 and 0.8, and the ratio of the distance between said light-receiving surface and said light-blocking plate with respect tot he width of said light-receiving surface is between 0.4 and 1.0.
Claim 17
Dependent Claim
39 words
A solar radiation sensor apparatus according to claim 10, wherein said light-blocking plate is pyramid-shaped, and is disposed with the apex of the pyramid shape being directed to said light-receiving surface, side faces of the pyramid shape being mirror-finished.
Claim 18
Dependent Claim
28 words
A solar radiation sensor apparatus according to claim 10, wherein the center of said light-receiving surface and the center of said light-blocking plate are shifted from each other.
Claim 19
Dependent Claim
118 words
A solar radiation sensor apparatus comprising: a photodiode on an upper surface of which a photoelectric-element semiconductor chip having a light-receiving surface is disposed; a transparent substrate which covers an upper surface of said semiconductor chip and on which a light-blocking portion having an area smaller than the area of the light-receiving surface is printed, said light-blocking portion being printed on said transparent substrate at a predetermine distance from said upper surface of said semiconductor chip; an inner case surrounding the periphery of said photodiode; an outer case surrounding the peripheries of said transparent substrate and said inner case; and a filler material which fills an opening of said outer case and in which leads are partially impregnated.
Claim 20
Dependent Claim
118 words
A solar radiation sensor apparatus comprising: a photodiode on an upper surface of which a photoelectric-element semiconductor chip having a light-receiving surface is disposed; a transparent substrate which covers an upper surface of said semiconductor chip and on which a light-blocking portion having an area smaller than the area of the light-receiving surface is printed, said light-blocking portion being printed on said transparent substrate at a predetermine distance from said upper surface of said semiconductor chip; an inner case surrounding the periphery of said photodiode; an outer case surrounding the peripheries of said transparent substrate and said inner case; and a filler material which fills an opening of said outer case and in which leads are partially impregnated.
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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) | 1994-11-11 | 1995-05-13 | 1995-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-11 | 1999-05-13 | 1999-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-11 | 2003-05-13 | 2003-11-12 | $7700.00 | Window Closed / Lapsed |