US6525386B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-protruding optoelectronic lens
Assignee: JPMorgan Chase Bank NA
•
Filing: 1998-03-10
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Granted: 2003-02-25
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Expires: 2018-03-10
Abstract
Abstract An optoelectronic component has a lens that is formed in the surface of an encapsulant surrounding a semiconductor diode element. With respect to emitters, the lens reduces internal reflection and reduces dispersion to increase overall efficiency. With respect to detectors, the lens focuses photons on the active area of the detector, increasing detector sensitivity, which allows a detector having a reduced size and reduced cost for a given application. The lens portion of the encapsulant is generally non-protruding from the surrounding portions of the encapsulant reducing contact surface pressure caused by the optoelectronic component. This non-protruding lens is particularly useful in pulse oximetry sensor applications. The lens is advantageously formed with a contoured-tip ejector pin incorporated into the encapsulant transfer mold, and the lens shape facilitates mold release.
Inventors
- 👤 Michael A. Mills
- 👤 James P. Coffin, IV
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:56
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/85; H10H20/852; H10H20/853; B; B29; B29C; B29C45/00; B29C45/17; B29C45/40; B29C45/4005; B29C45/401; H10F; H10F77/00; H10F77/40; H10F77/413; H10F77/50; A; A61; A61B; A61B5/00; A61B5/145; A61B5/1455; B29C45/14; B29C45/14639; B29C45/14655; H10W; H10W72/00; H10W72/50; H10W72/551; H10W72/552; H10W72/5522; H10W74/00; H10W74/10; H10W90/00; H10W90/701; H10W90/751; H10W90/756; Y; Y10; Y10S; Y10S425/00; Y10S425/808
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
105 words
An optoelectronic device for contacting biological tissue, the optoelectronic device comprising: an encapsulant having a surface; a lens comprising a lens portion of said surface of the encapsulant; a trough in said encapsulant disposed around said lens portion; a filler portion having a generally smooth surface disposed around said lens, wherein said generally smooth surface contacts the biological tissue and said lens does not protrude substantially beyond said generally smooth surface; and an optoelectronic element embedded in said encapsulant and operable at at least one wavelength of light, said lens configured to transmit or receive or both transmit and receive said at least one wavelength.
Claim 2
Dependent Claim
105 words
An optoelectronic device for contacting biological tissue, the optoelectronic device comprising: an encapsulant having a surface; a lens comprising a lens portion of said surface of the encapsulant; a trough in said encapsulant disposed around said lens portion; a filler portion having a generally smooth surface disposed around said lens, wherein said generally smooth surface contacts the biological tissue and said lens does not protrude substantially beyond said generally smooth surface; and an optoelectronic element embedded in said encapsulant and operable at at least one wavelength of light, said lens configured to transmit or receive or both transmit and receive said at least one wavelength.
Claim 3
Dependent Claim
24 words
The optoelectronic device of claim 1 , wherein said lens portion has a surface portion which lies substantially parallel to said generally smooth surface.
Claim 4
Dependent Claim
21 words
The optoelectronic device of claim 2 , wherein said lens portion has a generally circular cross-section in at least one plane.
Claim 5
Dependent Claim
28 words
The optoelectronic device of claim 1 , wherein said lens portion has a generally circular, flat surface and an arcuate surface proximate the periphery of said flat surface.
Claim 6
Dependent Claim
19 words
The optoelectronic device of claim 4 , wherein said encapsulant has an index of refraction between 1.5 and 1.6.
Claim 7
Dependent Claim
20 words
The optoelectronic device of claim 5 , wherein said flat surface has a diameter that is less than 30 mils.
Claim 8
Dependent Claim
16 words
The optoelectronic device of claim 1 , wherein said lens has a generally spherical surface element.
Claim 9
Dependent Claim
15 words
The optoelectronic device of claim 1 , wherein said lens has a generally parabolic surface.
Claim 10
Dependent Claim
31 words
The optoelectronic device of claim 1 , wherein said trough has a sidewall constructed at an angle less than 90° with respect to the generally smooth surface of said filler portion.
Claim 11
Dependent Claim
15 words
The optoelectronic device of claim 9 , wherein said angle is between 40° and 60°.
Claim 12
Dependent Claim
18 words
The optoelectronic device of claim 1 , wherein said trough has a depth less than about 30 mils.
Claim 13
Dependent Claim
29 words
The optoelectronic device of claim 1 , wherein said optoelectronic element is a first light emitting diode operable to transmit light through at least a portion of said lens.
Claim 14
Dependent Claim
28 words
The optoelectronic device of claim 12 , wherein said first light emitting diode is operable to transmit light through said lens and through other portions of said encapsulant.
Claim 15
Dependent Claim
32 words
The optoelectronic device of claim 12 , further comprising: a second light emitting diode embedded in said encapsulant and operable to transmit light through at least a portion of said lens portion.
Claim 16
Dependent Claim
31 words
The optoelectronic device of claim 14 , wherein said first light emitting diode transmits wavelengths in the red spectrum and said second light emitting diode transmits wavelengths in the infrared spectrum.
Claim 17
Dependent Claim
39 words
A pulse oximetry sensor comprising: an encapsulant having a surface; a lens comprising a lens portion of said surface of the encapsulant; a trough in said encapsulant surrounding said lens portion; and an optoelectronic element embedded within said encapsulant.
Claim 18
Dependent Claim
39 words
A pulse oximetry sensor comprising: an encapsulant having a surface; a lens comprising a lens portion of said surface of the encapsulant; a trough in said encapsulant surrounding said lens portion; and an optoelectronic element embedded within said encapsulant.
Claim 19
Dependent Claim
15 words
The pulse oximetry sensor of claim 16 , wherein the lens has a surface portion.
Claim 20
Dependent Claim
29 words
The pulse oximetry sensor of claim 16 , wherein the lens portion has a generally circular, flat surface and an arcuate surface proximate the periphery of the flat surface.
Claim 21
Dependent Claim
16 words
The pulse oximetry sensor of claim 16 , wherein said lens has a generally spherical surface.
Claim 22
Dependent Claim
16 words
The pulse oximetry sensor of claim 16 , wherein said lens has a generally parabolic surface.
Claim 23
Dependent Claim
94 words
An optoelectronic device for contacting biological tissue, the optoelectronic device comprising: an encapsulant having a surface; a lens comprising a spherically-curved lens portion of said surface of the encapsulant; a generally flat portion of said surface of the encapsulant, wherein said generally flat portion contacts the biological tissue and said lens does not protrude substantially beyond said generally flat portion; and an optoelectronic element embedded in said encapsulant and operable at at least one wavelength of light, said lens configured to transmit or receive or both transmit and receive said at least one wavelength.
Claim 24
Dependent Claim
94 words
An optoelectronic device for contacting biological tissue, the optoelectronic device comprising: an encapsulant having a surface; a lens comprising a spherically-curved lens portion of said surface of the encapsulant; a generally flat portion of said surface of the encapsulant, wherein said generally flat portion contacts the biological tissue and said lens does not protrude substantially beyond said generally flat portion; and an optoelectronic element embedded in said encapsulant and operable at at least one wavelength of light, said lens configured to transmit or receive or both transmit and receive said at least one wavelength.
Claim 25
Dependent Claim
94 words
An optoelectronic device for contacting biological tissue, the optoelectronic device comprising: an encapsulant having a surface; a lens comprising a parabolically-curved lens portion of said surface of the encapsulant; a generally flat portion of said surface of the encapsulant, wherein said generally flat portion contacts the biological tissue and said lens does not protrude substantially beyond said generally flat portion; and an optoelectronic element embedded in said encapsulant and operable at at least one wavelength of light, said lens configured to transmit or receive or both transmit and receive said at least one wavelength.
Claim 26
Dependent Claim
94 words
An optoelectronic device for contacting biological tissue, the optoelectronic device comprising: an encapsulant having a surface; a lens comprising a parabolically-curved lens portion of said surface of the encapsulant; a generally flat portion of said surface of the encapsulant, wherein said generally flat portion contacts the biological tissue and said lens does not protrude substantially beyond said generally flat portion; and an optoelectronic element embedded in said encapsulant and operable at at least one wavelength of light, said lens configured to transmit or receive or both transmit and receive said at least one wavelength.
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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) | 2006-02-24 | 2006-08-26 | 2007-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-02-24 | 2010-08-26 | 2011-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-02-24 | 2014-08-26 | 2015-02-25 | $7700.00 | Window Closed / Lapsed |