US5105239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflective type optical sensor device
Assignee: Toshiba Corp
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Filing: 1990-08-10
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Granted: 1992-04-14
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Expires: 2010-08-10
Abstract
Abstract Receiving sections for receiving light emitting and light receiving elements are formed in a housing. The axes of the light emitting and light receiving elements which are inserted into the receiving sections are optically coupled at a preset angle. Further, light transmission windows are formed in the housing in front of the light emitting and light receiving elements which are inserted into the receiving sections, and the opening area of the light transmission window on the light receiving element side is made smaller than that of the light transmission window on the light emitting element side.
Inventors
- 👤 Tsuguo Uchino
- 👤 Matsumi Ichimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:54
CPC Classifications
H; H10; H10F; H10F55/00; H10F55/20; H10F55/25; H10F77/00; H10F77/40; H10F77/413; H10F77/50; H10H; H10H20/00; H10H20/80; H10H20/85; H10H20/8506; H10H20/855
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
92 words
A reflective type optical sensor device comprising: a housing having first and second receiving sections; a light-emitting device contained in the first receiving section of the housing; a light-receiving device contained in the second receiving section of the housing; a first window, formed in the housing, for permitting light emitted from the light-emitting device to pass therethrough; and a second window, having an area smaller than an area of the first window, formed in the housing for permitting the light emitted from the light-emitting device to be incident on the light-receiving device.
Claim 2
Dependent Claim
92 words
A reflective type optical sensor device comprising: a housing having first and second receiving sections; a light-emitting device contained in the first receiving section of the housing; a light-receiving device contained in the second receiving section of the housing; a first window, formed in the housing, for permitting light emitted from the light-emitting device to pass therethrough; and a second window, having an area smaller than an area of the first window, formed in the housing for permitting the light emitted from the light-emitting device to be incident on the light-receiving device.
Claim 3
Dependent Claim
20 words
A reflective type optical sensor device according to claim 1, wherein said first and second windows are rectangular in shape.
Claim 4
Dependent Claim
20 words
A reflective type optical sensor device according to claim 1, wherein said first and second windows are circular in shape.
Claim 5
Dependent Claim
18 words
A reflective type optical sensor device according to claim 1, wherein said light-emitting device includes a light-emitting diode.
Claim 6
Dependent Claim
66 words
A reflective type optical sensor device according to claim 1, wherein said first and second receiving sections are formed such that a light axis of the light emitted from the light-emitting device and directed toward an object and a light axis of the light reflected by the object and incident on the light-receiving device form an angle which is in a range of 25° to 40°.
Claim 7
Dependent Claim
132 words
A reflective type optical sensor device comprising: a housing having first and second receiving sections; a light-emitting device contained in the first receiving section of the housing; a light-receiving device contained in the second receiving section of the housing; a first window, formed in the housing, for permitting light emitted from the light-emitting device to pass therethrough; a second window, formed in the housing, for permitting the light emitted from the light-emitting device to be incident on the light-receiving device; a first lens, arranged in the housing, for converging the light emitted from the light-emitting device; and a second lens, arranged in the housing, for covering light to be incident on the light-receiving device, said second lens having a shorter radius of curvature than a radius of curvature of the first lens.
Claim 8
Dependent Claim
132 words
A reflective type optical sensor device comprising: a housing having first and second receiving sections; a light-emitting device contained in the first receiving section of the housing; a light-receiving device contained in the second receiving section of the housing; a first window, formed in the housing, for permitting light emitted from the light-emitting device to pass therethrough; a second window, formed in the housing, for permitting the light emitted from the light-emitting device to be incident on the light-receiving device; a first lens, arranged in the housing, for converging the light emitted from the light-emitting device; and a second lens, arranged in the housing, for covering light to be incident on the light-receiving device, said second lens having a shorter radius of curvature than a radius of curvature of the first lens.
Claim 9
Dependent Claim
18 words
A reflective type optical sensor device according to claim 6, wherein said light-emitting device includes a light-emitting diode.
Claim 10
Dependent Claim
65 words
A reflective type optical sensor device according to claim 6, wherein said first and second receiving sections are formed such that a light axis of light emitted from the light-emitting device and directed toward an object and a light axis of the light reflected by the object and incident on the light-receiving device form an angle which is in a range of 25° to 40°.
Claim 11
Dependent Claim
140 words
A reflective type optical sensor device comprising: a housing having first and second receiving sections; a light-emitting device contained in the first receiving section of the housing; a light-receiving device contained in the second receiving section of the housing; a first window, formed in the housing, for permitting light emitted from the light-emitting device to pass therethrough; a second window, formed in the housing, for permitting the light emitted from the light-emitting device to be incident on the light-receiving device; a first lens, which is integrally formed with the light-emitting device, for converging the light emitted from the light-emitting device; and a second lens, which is integrally formed with the light-receiving device, for converging light to be incident on the light-receiving device, said second lens having a shorter radius of curvature than a radius of curvature of the first lens.
Claim 12
Dependent Claim
140 words
A reflective type optical sensor device comprising: a housing having first and second receiving sections; a light-emitting device contained in the first receiving section of the housing; a light-receiving device contained in the second receiving section of the housing; a first window, formed in the housing, for permitting light emitted from the light-emitting device to pass therethrough; a second window, formed in the housing, for permitting the light emitted from the light-emitting device to be incident on the light-receiving device; a first lens, which is integrally formed with the light-emitting device, for converging the light emitted from the light-emitting device; and a second lens, which is integrally formed with the light-receiving device, for converging light to be incident on the light-receiving device, said second lens having a shorter radius of curvature than a radius of curvature of the first lens.
Claim 13
Dependent Claim
65 words
A reflective type optical sensor device according to claim 9, wherein said first and second receiving sections are formed such that a light axis of light emitted from the light-emitting device and directed toward an object and a light axis of the light reflected by the object and incident on the light-receiving device form an angle which is in a range of 25° to 40°.
References Cited (Backward Citations)
US4368481A
Cited
JPS5648188A
Cited
JPS59154083A
Cited
JPS62132377A
Cited
JPS63104486A
Cited
JPS63138785A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-04-14 | 1995-10-14 | 1996-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-04-14 | 1999-10-14 | 2000-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-04-14 | 2003-10-14 | 2004-04-14 | $7700.00 | Window Closed / Lapsed |