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US4977317A
Expired / Lapsed
US
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Resin-molded type photosensor
Assignee: NEC Corp
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Filing: 1989-10-27
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Granted: 1990-12-11
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Expires: 2009-10-27
Abstract
Abstract A resin-molded type photosensor such as a photointerrupter or a reflection-type photosensor is formed in a body of U-shape. Within the U-shaped resin package, a light emitting element and a light detecting element are provided to be electrically connected to a first external electrode and a second external electrode, respectively. Furthermore, a U-shaped electric conductive coupling member is provided within the package so as to electrically connect the first external lead, the light emitting element, the light detecting element and the second external lead in series. Moreover, a resistor element is provided within the package so as to be electrically connected to the light detecting element in parallel and thereby enabling the photosensor having only two external leads.
Inventors
- 👤 Osamu Iwashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:34
CPC Classifications
H; H10; H10F; H10F55/00; H10F55/20; H10F55/25; H10W; H10W74/00; H10W74/10; H10W90/00; H10W90/701; H10W90/751; H10W90/756
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
111 words
A resin-molded type photosensor comprising: a first lead having one end electrically connected to one of the electrodes of a light-emitting element; a second lead having one end electrically connected to one of the electrodes of a light-receiving element; an electrically conductive coupling member connecting the other end of said light-emitting electrode and the other end of said light-receiving electrode; and a resin package for molding said light-emitting element, light-receiving element and electrically conductive coupling member so as to dispose said first lead, second lead and coupling member in the same plane, the other end of each of said first lead and second lead being led out of said resin package.
Claim 2
Dependent Claim
111 words
A resin-molded type photosensor comprising: a first lead having one end electrically connected to one of the electrodes of a light-emitting element; a second lead having one end electrically connected to one of the electrodes of a light-receiving element; an electrically conductive coupling member connecting the other end of said light-emitting electrode and the other end of said light-receiving electrode; and a resin package for molding said light-emitting element, light-receiving element and electrically conductive coupling member so as to dispose said first lead, second lead and coupling member in the same plane, the other end of each of said first lead and second lead being led out of said resin package.
Claim 3
Dependent Claim
53 words
A resin-molded type photosensor as claimed in claim 1, wherein said coupling member having a U-shaped form is disposed between said first lead and second lead, said light-emitting element and light-receiving element are mounted on the respective ends of said coupling member, and said resin envelope has a gap along said U-shaped form.
Claim 4
Dependent Claim
28 words
A resin-molded type photosensor as claimed in claim 1, wherein a resistor element is electrically connected between said second lead and said coupling member within said resin package.
Claim 5
Dependent Claim
39 words
A resin-molded type photosensor as claimed in claim 1, wherein said light-receiving element is provided with a resistor film such that said resistor film is electrically connected in parallel with a pair of electrodes of said light receiving element.
References Cited (Backward Citations)
US4833318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-12-10 | 1994-06-11 | 1994-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-10 | 1998-06-11 | 1998-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-10 | 2002-06-11 | 2002-12-11 | $7700.00 | Window Closed / Lapsed |