US5319182A
Expired / Lapsed
US
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Integrated solid state light emitting and detecting array and apparatus employing said array
Assignee: Hand Held Products Inc
•
Filing: 1992-03-04
•
Granted: 1994-06-07
•
Expires: 2012-03-04
Abstract
Abstract There is provided an integrated semiconductor source-detector matrix in which solid state photonic diodes are configured as LEDs, disposed on a substrate and coupled to electronic circuits so that the diodes can be individually driven to emit light or to detect light as may be desired. Providing an integrated matrix of light source (emitter) and light sensor units disposed in close proximity results in each unit having nearly coextensive fields of view and illumination. Apparatus, such as bar code and optical readers utilizing such a matrix are shown, and are insensitive to the diffusion and laminate effects. In alternate embodiments the matrix is coupled to remote sensors or another similar matrix to provide optical communication and interchange devices having high bandwidth.
Inventors
- 👤 William H. Havens
- 👤 Charles M. Hammond, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:03
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10831; G06K7/10712; G06K7/10722; G06K7/10732; G06K7/10841; H; H10; H10F; H10F55/00; H10F55/20; H10F55/25; H10F55/255; H10H; H10H29/00; H10H29/10; H10H29/14; H10H29/142; H10W; H10W90/00
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
151 words
An optical information detecting apparatus comprising: an integrated, solid state structure further comprising a plurality of photonic diodes configured as a plurality of light sensors and a plurality of light emitting elements disposed on a substrate and are electrically isolated from one another, said light sensors being optically isolated from said light emitting elements, said diodes having a vertical structure, comprising a plurality of identically fabricated layers, corresponding layers of said diodes being mutually coplanar; circuit means connected to said light sensors for enabling said diodes to detect light, whereby a signal is generated in response to said detected light; and means for directing light that emanates from said light emitting elements to a target and for returning light that contains optical information to said light sensors, said means for directing light being external to said solid state structure; whereby said signal is indicative of an optical characteristic of said target.
Claim 2
Dependent Claim
151 words
An optical information detecting apparatus comprising: an integrated, solid state structure further comprising a plurality of photonic diodes configured as a plurality of light sensors and a plurality of light emitting elements disposed on a substrate and are electrically isolated from one another, said light sensors being optically isolated from said light emitting elements, said diodes having a vertical structure, comprising a plurality of identically fabricated layers, corresponding layers of said diodes being mutually coplanar; circuit means connected to said light sensors for enabling said diodes to detect light, whereby a signal is generated in response to said detected light; and means for directing light that emanates from said light emitting elements to a target and for returning light that contains optical information to said light sensors, said means for directing light being external to said solid state structure; whereby said signal is indicative of an optical characteristic of said target.
Claim 3
Dependent Claim
16 words
The apparatus of claim 1, further comprising control means for selectively enabling and disabling said diodes.
Claim 4
Dependent Claim
15 words
The apparatus of claim 1 wherein said photonic diodes have identical length and width dimensions.
Claim 5
Dependent Claim
12 words
The apparatus of claim 1, further comprising means for processing said signal.
Claim 6
Dependent Claim
18 words
The apparatus of claim 1, wherein said diodes are disposed between said substrate and said light directing means.
Claim 7
Dependent Claim
159 words
An optical information detecting apparatus comprising an integrated, solid state structure further comprising a first plurality of substantially coplanar photonic diodes disposed on a substrate and are optically and electrically isolated from one another; circuit means for enabling said diodes to detect light, whereby a signal is generated in response to said detected light; a second plurality of light emitting elements comprising identically fabricated photonic diodes that are substantially coplanar with said first plurality of photonic diodes said first and second plurality of photonic diodes being identically fabricated; means for switchably operating at least one of said identically fabricated photonic diodes in a photoemissive mode and a photodetecting mode; and means for directing light that emanates from said light emitting elements to a target and for returning light that contains optical information to said diodes, said means for directing light being external to said solid state structure; whereby said signal is indicative of an optical characteristic of said target.
Claim 8
Dependent Claim
159 words
An optical information detecting apparatus comprising an integrated, solid state structure further comprising a first plurality of substantially coplanar photonic diodes disposed on a substrate and are optically and electrically isolated from one another; circuit means for enabling said diodes to detect light, whereby a signal is generated in response to said detected light; a second plurality of light emitting elements comprising identically fabricated photonic diodes that are substantially coplanar with said first plurality of photonic diodes said first and second plurality of photonic diodes being identically fabricated; means for switchably operating at least one of said identically fabricated photonic diodes in a photoemissive mode and a photodetecting mode; and means for directing light that emanates from said light emitting elements to a target and for returning light that contains optical information to said diodes, said means for directing light being external to said solid state structure; whereby said signal is indicative of an optical characteristic of said target.
Claim 9
Dependent Claim
150 words
A bar code reading apparatus having an integrated, solid state structure that comprises a plurality of photodiodes disposed on a substrate and are electrically isolated from one another, said diodes having a vertical structure, comprising a plurality of layers, corresponding layers of said diodes being mutually coplanar, said diodes further having identical length and width dimensions; circuit means for enabling said photodiodes to detect light, whereby a signal is generated in response to said detected light, a plurality of light emitting diodes having a vertical structure, comprising a plurality of layers that are substantially coplanar with corresponding layers of said photodiodes, said photodiodes and said light emitting diodes being identically fabricated and means for directing light that emanates from said light emitting diodes onto indicia being read and for returning light reflected from said indicia to said photodiodes, said means for directing light being external to said solid state structure.
Claim 10
Dependent Claim
150 words
A bar code reading apparatus having an integrated, solid state structure that comprises a plurality of photodiodes disposed on a substrate and are electrically isolated from one another, said diodes having a vertical structure, comprising a plurality of layers, corresponding layers of said diodes being mutually coplanar, said diodes further having identical length and width dimensions; circuit means for enabling said photodiodes to detect light, whereby a signal is generated in response to said detected light, a plurality of light emitting diodes having a vertical structure, comprising a plurality of layers that are substantially coplanar with corresponding layers of said photodiodes, said photodiodes and said light emitting diodes being identically fabricated and means for directing light that emanates from said light emitting diodes onto indicia being read and for returning light reflected from said indicia to said photodiodes, said means for directing light being external to said solid state structure.
Claim 11
Dependent Claim
31 words
The apparatus of claim 7, further comprising control means for selectively enabling and disabling said light emitting diodes and said photodiodes, whereby a variable area on a target can be scanned.
Claim 12
Dependent Claim
19 words
The apparatus of claim 7 wherein said light emitting diodes and said photodiodes have identical length and width dimensions.
Claim 13
Dependent Claim
18 words
The apparatus of claim 7, wherein said light emitting elements and said photodiodes comprise identically fabricated photonic diodes.
Claim 14
Dependent Claim
12 words
The apparatus of claim 7, further comprising means for processing said signal.
Claim 15
Dependent Claim
22 words
The apparatus of claim 11, wherein said means for processing and said integrated solid state structure are integral within a common housing.
Claim 16
Dependent Claim
21 words
The apparatus of claim 11, wherein said means for processing and said solid state structure are integrated on a common substrate.
Claim 17
Dependent Claim
53 words
The apparatus of claim 7, wherein said photodiodes and said light emitting diodes are operatively associated as members of functional subunits, and light that emanates from light emitting members of a subunit and passes through said light directing means is reflected from said indicia and communicated to light sensing members of said subunit.
Claim 18
Dependent Claim
40 words
The apparatus of claim 7, wherein at least two light emitting diodes are connected in non-isolated electrical connection to a common data line, whereby a plurality of light emitting diodes can be simultaneously controlled in a matrix without addressing logic.
Claim 19
Dependent Claim
18 words
The apparatus in accordance with claim 7, wherein said photodiodes are optically isolated from said light emitting diodes.
Claim 20
Dependent Claim
13 words
The apparatus in accordance with claim 7, wherein said photodiodes are identically fabricated.
Claim 21
Independent Claim
114 words
A method of reading indicia on a substrate, comprising the steps of: collocating a plurality of identically fabricated light emitting and light sensing elements in a region, said elements having a vertical structure, comprising a plurality of layers, corresponding layers of said elements being mutually coplanar, said elements further having identical length and width dimensions; forming optical images of said elements on an indicia; causing a light emitting element to emit light that is incident on said indicia and is reflected therefrom into said region; detecting reflected light with at least one of said light sensing elements and producing a signal in response thereto that is indicative of an optical characteristic of said indicia.
Claim 22
Independent Claim
114 words
A method of reading indicia on a substrate, comprising the steps of: collocating a plurality of identically fabricated light emitting and light sensing elements in a region, said elements having a vertical structure, comprising a plurality of layers, corresponding layers of said elements being mutually coplanar, said elements further having identical length and width dimensions; forming optical images of said elements on an indicia; causing a light emitting element to emit light that is incident on said indicia and is reflected therefrom into said region; detecting reflected light with at least one of said light sensing elements and producing a signal in response thereto that is indicative of an optical characteristic of said indicia.
Claim 23
Dependent Claim
27 words
The method of claim 18, wherein said substrate has a diffusion path length, and optical images of said elements are no larger than said diffusion path length.
Claim 24
Dependent Claim
16 words
The method of claim 19, wherein said diffusion path length is less than about 0.05 mm.
Claim 25
Dependent Claim
35 words
The method of claim 18, further comprising the steps of connecting at least two identical elements selected from said light sensing elements and said light emitting elements in non-isolated electrical connection with a common data.
Claim 26
Dependent Claim
19 words
The method according to claim 18, wherein said light emitting elements are optically isolated from said light sensing elements.
Claim 27
Dependent Claim
124 words
An optical information detecting apparatus comprising: an integrated, solid state structure further comprising a plurality of photodiodes configured as light sensors disposed on a substrate, said photodiodes each having a non-isolated electrical connection to a common control line, whereby a matrix of said photodiodes can be controlled without addressing logic; and a plurality of light emitting elements that are substantially coplanar with said photodiodes, said photodiodes and said light emitting elements being identically fabricated; and means for directing light that emanates from said light emitting elements to a target and for returning light that contains optical information to said photodiodes, said means for directing light being external to said solid state structure; whereby said signal is indicative of an optical characteristic of said target.
Claim 28
Dependent Claim
124 words
An optical information detecting apparatus comprising: an integrated, solid state structure further comprising a plurality of photodiodes configured as light sensors disposed on a substrate, said photodiodes each having a non-isolated electrical connection to a common control line, whereby a matrix of said photodiodes can be controlled without addressing logic; and a plurality of light emitting elements that are substantially coplanar with said photodiodes, said photodiodes and said light emitting elements being identically fabricated; and means for directing light that emanates from said light emitting elements to a target and for returning light that contains optical information to said photodiodes, said means for directing light being external to said solid state structure; whereby said signal is indicative of an optical characteristic of said target.
Claim 29
Dependent Claim
18 words
The apparatus in accordance with claim 23, wherein said photodiodes are optically isolated from said light emitting elements.
Claim 30
Dependent Claim
117 words
An optical information detecting apparatus comprising: an integrated, solid state structure further comprising: a plurality of photonic diodes configured as a plurality of light sensors that generate a signal responsive to light incident thereon, and a plurality of light emitting diodes disposed on a substrate, said diodes having a vertical structure comprising a plurality of identically fabricated layers, corresponding layers of said diodes being mutually coplanar; and means for directing light that emanates from said light emitting diodes to a target and for returning light that contains optical information to said light sensors, said means for directing light being external to said solid state structure; whereby said signal is indicative of an optical characteristic of said target.
Claim 31
Dependent Claim
117 words
An optical information detecting apparatus comprising: an integrated, solid state structure further comprising: a plurality of photonic diodes configured as a plurality of light sensors that generate a signal responsive to light incident thereon, and a plurality of light emitting diodes disposed on a substrate, said diodes having a vertical structure comprising a plurality of identically fabricated layers, corresponding layers of said diodes being mutually coplanar; and means for directing light that emanates from said light emitting diodes to a target and for returning light that contains optical information to said light sensors, said means for directing light being external to said solid state structure; whereby said signal is indicative of an optical characteristic of said target.
Claim 32
Dependent Claim
15 words
The apparatus of claim 25 wherein said photonic diodes have identical length and width dimensions.
Claim 33
Dependent Claim
19 words
The apparatus in accordance with claim 25, wherein said light sensors are optically isolated from said light emitting diodes.
Claim 34
Independent Claim
120 words
A method of reading indicia on a substrate, comprising the steps of: collocating a plurality of light emitting and light sensing elements in a region, said light emitting and light sensing elements being identically fabricated; connecting at least two identical elements selected from said light sensing elements and said light emitting elements in non-isolated electrical connection with a common data line; forming optical images of said elements on an indicia; causing a light emitting element to emit light that is incident on said indicia and is reflected therefrom into said region; detecting reflected light with at least one of said input sensing elements and producing a signal in response thereto that is indicative of an optical characteristic of said indicia.
Claim 35
Independent Claim
120 words
A method of reading indicia on a substrate, comprising the steps of: collocating a plurality of light emitting and light sensing elements in a region, said light emitting and light sensing elements being identically fabricated; connecting at least two identical elements selected from said light sensing elements and said light emitting elements in non-isolated electrical connection with a common data line; forming optical images of said elements on an indicia; causing a light emitting element to emit light that is incident on said indicia and is reflected therefrom into said region; detecting reflected light with at least one of said input sensing elements and producing a signal in response thereto that is indicative of an optical characteristic of said indicia.
Claim 36
Dependent Claim
19 words
The method according to claim 28, wherein said light emitting elements are optically isolated from said light sensing elements.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1997-06-06 | 1997-12-06 | 1998-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-06 | 2001-12-06 | 2002-06-07 | $3760.00 | Window Closed / Lapsed |
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