US6188527B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
LED array PCB with adhesive rod lens
Assignee: Hewlett Packard Development Co LP
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Filing: 1999-04-12
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Granted: 2001-02-13
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Expires: 2019-04-12
Abstract
Abstract The inventive lens is formed from an optical adhesive is used to collect light from a LED array. As the adhesive is dispensed, it is formed into the shape of a lens. The adhesive is then cured, and a lens is formed that covers the LED array. The inventive lens collects light that is emitted by the LEDs at extreme angles and directs the light to the scan location.
Inventors
- 👤 David D Bohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:52
CPC Classifications
G; G02; G02B; G02B3/00; G02B3/02; G02B3/06; B; B29; B29D; B29D11/00; B29D11/00009; B29D11/00365; G02B3/0006; G02B3/0037; G02B3/005; H; H10; H10W; H10W90/00; H10H; H10H20/00; H10H20/80; H10H20/83; H10H20/832; H10H20/85; H10H20/852; H10H20/853
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
86 words
A method for forming a light collection lens on a board, wherein the board is a printed circuit board that includes a plurality of light emitting diodes (LEDs) arranged in an array, comprising the steps of: dispensing an optical adhesive onto the array; forming a lens shape with the adhesive by maintaining the lens shape via the surface tension characteristic of the adhesive wherein the lens shape is a cylindrical lens shape; and curing the adhesive in the lens shape to form the light collection lens.
Claim 2
Independent Claim
86 words
A method for forming a light collection lens on a board, wherein the board is a printed circuit board that includes a plurality of light emitting diodes (LEDs) arranged in an array, comprising the steps of: dispensing an optical adhesive onto the array; forming a lens shape with the adhesive by maintaining the lens shape via the surface tension characteristic of the adhesive wherein the lens shape is a cylindrical lens shape; and curing the adhesive in the lens shape to form the light collection lens.
Claim 3
Dependent Claim
28 words
The method of claim 1 , wherein the step of curing comprises the step of: heating the adhesive to a predetermined temperature for a predetermined length of time.
Claim 4
Dependent Claim
30 words
The method of claim 1 , wherein the step of curing comprises the step of: exposing the adhesive to a predetermined wavelength of light for a predetermined length of time.
Claim 5
Dependent Claim
17 words
The method of claim 1 , wherein the light collection lens is used in a scanning system.
Claim 6
Dependent Claim
25 words
The method of claim 4 , wherein the light collection lens collects light from a light source and directs the light to a scan target.
Claim 7
Dependent Claim
15 words
The method of claim 3 , wherein the wavelength of light corresponds to ultraviolet light.
Claim 8
Dependent Claim
15 words
The method of claim 6 , wherein the predetermined length of time is 30 seconds.
Claim 9
Dependent Claim
23 words
The method of claim 1 , wherein the adhesive is selected from the group consisting of epoxy adhesive, urethane adhesive, and acrylic adhesive.
Claim 10
Dependent Claim
12 words
The method of claim 1 , wherein the adhesive comprises diffusion additives.
Claim 11
Dependent Claim
23 words
The method of claim 1 , wherein the method further comprises the step of: inverting the board subsequent to dispensing the optical adhesive.
Claim 12
Dependent Claim
22 words
The method of claim 1 , wherein the method further comprises the step of: inverting the board during dispensing the optical adhesive.
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) | 2004-02-13 | 2004-08-14 | 2005-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-02-13 | 2008-08-14 | 2009-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-02-13 | 2012-08-14 | 2013-02-13 | $7700.00 | Window Closed / Lapsed |