US5528057A
Expired / Lapsed
US
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Semiconductor luminous element with light reflection and focusing configuration
Assignee: Omron Corp
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Filing: 1994-05-27
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Granted: 1996-06-18
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Expires: 2014-05-27
Abstract
Abstract A luminous element with a high luminous efficiency comprising means for condensing light towards an exit window of the element. Specifically, the luminous element condenses light generated at the luminous area of the luminous element by an optically reflective surface having oblique concentric surface portions.
Inventors
- 👤 Masashi Yanagase
- 👤 Hideaki Watanabe
- 👤 Koichi Imamaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:26
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/81; H10H20/814; H10H20/83; H10H20/832; H10H20/835; H10W; H10W90/00; H10W90/701; H10W90/751; H10W90/756
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
145 words
A semiconductor luminous element, comprising: a first electrode layer; a substrate; a multilayer reflective film, said multilayer reflective film is a laminate consisting of a number of layers of thin film with different refractive indices; a first cladding layer; an active layer; a second cladding layer, said active layer is located between said first cladding layer and said second cladding layer; an optically reflective surface positioned above said second cladding layer, said optically reflective surface having reflective surface portions positioned at oblique angles with respect to a surface of said multilayer reflective film to condense light emitted by said active layer and light reflected by said multilayer reflective film; and a second electrode layer having a window therethrough, whereby said optically reflective surface condenses light emitted by said active layer and light reflected by said multilayer reflective film through said window of said second electrode.
Claim 2
Dependent Claim
145 words
A semiconductor luminous element, comprising: a first electrode layer; a substrate; a multilayer reflective film, said multilayer reflective film is a laminate consisting of a number of layers of thin film with different refractive indices; a first cladding layer; an active layer; a second cladding layer, said active layer is located between said first cladding layer and said second cladding layer; an optically reflective surface positioned above said second cladding layer, said optically reflective surface having reflective surface portions positioned at oblique angles with respect to a surface of said multilayer reflective film to condense light emitted by said active layer and light reflected by said multilayer reflective film; and a second electrode layer having a window therethrough, whereby said optically reflective surface condenses light emitted by said active layer and light reflected by said multilayer reflective film through said window of said second electrode.
Claim 3
Dependent Claim
65 words
The element according to claim 1, wherein an upper surface of said second cladding layer is provided with surface portions positioned at oblique angles with respect to a surface of said multilayer reflective film, said second cladding layer is provided with an upper layer having a different indice of refraction relative to said second cladding layer defining said optically reflective surface at an interface therebetween.
Claim 4
Dependent Claim
20 words
The element according to claim 1, wherein said multilayer reflective film consists of a number of films of various thicknesses.
Claim 5
Dependent Claim
44 words
The element according to claim 1, wherein light is emitted from a surface of the element, and said optically reflective surface is defined by plural concentric band surface portions centered at a center of said window through said second electrode through which light escapes.
Claim 6
Dependent Claim
39 words
The element according to claim 1, wherein light is emitted from an edge of the element, and said optically reflective surface is defined by plural concentric bands centered at an edge of the element which emits the light therefrom.
Claim 7
Dependent Claim
18 words
The element according to claim 1, wherein said second electrode layer is formed on said optically reflective surface.
Claim 8
Dependent Claim
18 words
The element according to claim 3, wherein said second electrode layer is formed on said optically reflective surface.
Claim 9
Dependent Claim
18 words
The element according to claim 4, wherein said second electrode layer is formed on said optically reflective surface.
Claim 10
Dependent Claim
18 words
The element according to claim 5, wherein said second electrode layer is formed on said optically reflective surface.
Claim 11
Dependent Claim
38 words
The element according to claim 1, including an optically reflective layer provided with surface portions positioned at oblique angles with respect to a surface of said multilayer reflective film, said optically reflective layer supporting said optically reflective surface.
Claim 12
Dependent Claim
149 words
An optical detector, comprising: a semiconductor luminous element, comprising: a first electrode layer; a substrate; a multilayer reflective film, said multilayer reflective film is a laminate consisting of a number of layers of thin film with different refractive indices; a first cladding layer; an active layer; a second cladding layer, said active layer is located between said first cladding layer and said second cladding layer; an optically reflective surface positioned above said second cladding layer, said optically reflective surface having reflective surface portions positioned at oblique angles with respect to a surface of said multilayer reflective film to condense light emitted by said active layer and light reflected by said multilayer reflective film; and a second electrode layer having a window therethrough, whereby said optically reflective surface condenses light emitted by said active layer and light reflected by said multilayer reflective film through said window of said second electrode.
Claim 13
Dependent Claim
149 words
An optical detector, comprising: a semiconductor luminous element, comprising: a first electrode layer; a substrate; a multilayer reflective film, said multilayer reflective film is a laminate consisting of a number of layers of thin film with different refractive indices; a first cladding layer; an active layer; a second cladding layer, said active layer is located between said first cladding layer and said second cladding layer; an optically reflective surface positioned above said second cladding layer, said optically reflective surface having reflective surface portions positioned at oblique angles with respect to a surface of said multilayer reflective film to condense light emitted by said active layer and light reflected by said multilayer reflective film; and a second electrode layer having a window therethrough, whereby said optically reflective surface condenses light emitted by said active layer and light reflected by said multilayer reflective film through said window of said second electrode.
Claim 14
Dependent Claim
151 words
An optical data processor device, comprising: a semiconductor luminous element, comprising: a first electrode layer; a substrate; a multilayer reflective film, said multilayer reflective film is a laminate consisting of a number of layers of thin film with different refractive indices; a first cladding layer; an active layer; a second cladding layer, said active layer is located between said first cladding layer and said second cladding layer; an optically reflective surface positioned above said second cladding layer, said optically reflective surface having reflective surface portions positioned at oblique angles with respect to a surface of said multilayer reflective film to condense light emitted by said active layer and light reflected by said multilayer reflective film; and a second electrode layer having a window therethrough, whereby said optically reflective surface condenses light emitted by said active layer and light reflected by said mulilayer reflective film through said window of said second electrode,
Claim 15
Dependent Claim
151 words
An optical data processor device, comprising: a semiconductor luminous element, comprising: a first electrode layer; a substrate; a multilayer reflective film, said multilayer reflective film is a laminate consisting of a number of layers of thin film with different refractive indices; a first cladding layer; an active layer; a second cladding layer, said active layer is located between said first cladding layer and said second cladding layer; an optically reflective surface positioned above said second cladding layer, said optically reflective surface having reflective surface portions positioned at oblique angles with respect to a surface of said multilayer reflective film to condense light emitted by said active layer and light reflected by said multilayer reflective film; and a second electrode layer having a window therethrough, whereby said optically reflective surface condenses light emitted by said active layer and light reflected by said mulilayer reflective film through said window of said second electrode,
Claim 16
Dependent Claim
148 words
A photocoupler, comprising: a semiconductor luminous element, comprising: a first electrode layer; a substrate; a multilayer reflective film, said multilayer reflective film is a laminate consisting of a number of layers of thin film with different refractive indices; a first cladding layer; an active layer; a second cladding layer, said active layer is located between said first cladding layer and said second cladding layer; an optically reflective surface positioned above said second cladding layer, said optically reflective surface having reflective surface portions positioned at oblique angles with respect to a surface of said multilayer reflective film to condense light emitted by said active layer and light reflected by said multilayer reflective film; and a second electrode layer having a window therethrough, whereby said optically reflective surface condenses light emitted by said active layer and light reflected by said mulilayer reflective film through said window of said second electrode.
Claim 17
Dependent Claim
148 words
A photocoupler, comprising: a semiconductor luminous element, comprising: a first electrode layer; a substrate; a multilayer reflective film, said multilayer reflective film is a laminate consisting of a number of layers of thin film with different refractive indices; a first cladding layer; an active layer; a second cladding layer, said active layer is located between said first cladding layer and said second cladding layer; an optically reflective surface positioned above said second cladding layer, said optically reflective surface having reflective surface portions positioned at oblique angles with respect to a surface of said multilayer reflective film to condense light emitted by said active layer and light reflected by said multilayer reflective film; and a second electrode layer having a window therethrough, whereby said optically reflective surface condenses light emitted by said active layer and light reflected by said mulilayer reflective film through said window of said second electrode.
Claim 18
Dependent Claim
149 words
A luminous projector, comprising: a semiconductor luminous element, comprising: a first electrode layer; a substrate; a multilayer reflective film, said multilayer reflective film is a laminate consisting of a number of layers of thin film with different refractive indices; a first cladding layer; an active layer; a second cladding layer, said active layer is located between said first cladding layer and said second cladding layer; an optically reflective surface positioned above said second cladding layer, said optically reflective surface having reflective surface portions positioned at oblique angles with respect to a surface of said multilayer reflective film to condense light emitted by said active layer and light reflected by said multilayer reflective film; and a second electrode layer having a window therethrough, whereby said optically reflective surface condenses light emitted by said active layer and light reflected by said mulilayer reflective film through said window of said second electrode.
Claim 19
Dependent Claim
149 words
A luminous projector, comprising: a semiconductor luminous element, comprising: a first electrode layer; a substrate; a multilayer reflective film, said multilayer reflective film is a laminate consisting of a number of layers of thin film with different refractive indices; a first cladding layer; an active layer; a second cladding layer, said active layer is located between said first cladding layer and said second cladding layer; an optically reflective surface positioned above said second cladding layer, said optically reflective surface having reflective surface portions positioned at oblique angles with respect to a surface of said multilayer reflective film to condense light emitted by said active layer and light reflected by said multilayer reflective film; and a second electrode layer having a window therethrough, whereby said optically reflective surface condenses light emitted by said active layer and light reflected by said mulilayer reflective film through said window of said second electrode.
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) | 1999-06-18 | 1999-12-18 | 2000-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-06-18 | 2003-12-18 | 2004-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-06-18 | 2007-12-18 | 2008-06-18 | $7700.00 | Window Closed / Lapsed |