LED lighting element and method of manufacturing same

• US 10,247,384 B1
• Filed: 03/14/2018
• Issued: 04/02/2019
• Est. Priority Date: 05/06/2017
• Status: Active Grant

• Current Assignee: Designs For Vision, Inc.
• Original Assignee: Designs For Vision, Inc.
• Inventors: Feinbloom, Richard E., Braganca, Kenneth N., Kenyon, Matthew
• Primary Examiner(s): Garlen, Alexander K
• Assistant Examiner(s): Cattanach, Colin J
• Application Number:
  US15/921,217
• Time in Patent Office: 384 Days
• CPC Class Codes: A61B 2090/309 using white LEDs
• CPC Class Codes: A61B 2090/502 Headgear, e.g. helmet, spectacles
• CPC Class Codes: A61B 90/30 Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
• CPC Class Codes: A61B 90/35 Supports therefor
• CPC Class Codes: A61C 1/088 Illuminating devices or attachments for examination of the mouth A61B1/24 and A61B1/06
• CPC Class Codes: F21V 15/01 Housings, e.g. material or assembling of housing parts F21V15/02 takes precedence housings forming signs or letters G09F13/04
• CPC Class Codes: F21V 17/12 by screwing
• CPC Class Codes: F21V 21/084 Head fittings
• CPC Class Codes: F21V 23/005 the substrate is supporting also the light source
• CPC Class Codes: F21V 29/503 of light sources cooling arrangements structurally associated with gas-discharge or vapour-discharge lamps H01J61/52; cooling arrangements structurally associated with electric incandescent lamps H01K1/58; cooling arrangements structurally associated with light-emitting diodes H01L33/64
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 5/008 Combination of two or more successive refractors along an optical axis
• CPC Class Codes: F21V 5/04 of lens shape
• CPC Class Codes: F21W 2131/20 Lighting for medical use
• CPC Class Codes: F21W 2131/202 for dentistry
• CPC Class Codes: F21W 2131/205 for operating theatres
• CPC Class Codes: F21W 2131/208 for hospital wards
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05K 1/0203 Cooling of mounted components H05K1/0272 takes precedence
• CPC Class Codes: H05K 1/181 associated with surface mounted components
• CPC Class Codes: H05K 2201/09027 : Non-rectangular flat PCB, e.g. circular
• CPC Class Codes: H05K 2201/10106 : Light emitting diode [LED]
• CPC Class Codes: H05K 2201/10121 : Optical component, e.g. opto-electronic component

Abstract

A lighting element is disclosed that provides a projection of light forming a substantially uniform bright light on a surface a known distance from the lighting element. The lighting elements includes a dome lens that is removably positioned on a light source, such that the light source is retained at a location within a focal length of a projection lens and at or within a focal length of the dome lens. The dome lens magnifies the light outputted by the light source, such that the projected light is brighter than the light generated by the light source.

Claims

1. A lighting assembly comprising:

a lens assembly comprising;

at least one projection lens,

a housing comprising;

a lighting element comprising;

a printed circuit board;

a Light Emitting Diode (LED) positioned on the printed circuit board;

an aperture plate comprising;

a first groove positioned along a diameter of the aperture plate; and

a second groove, substantially perpendicular to the first groove, positioned along a diameter of the aperture place; and

a first passthrough positioned at an intersection of the first groove and the second groove, said first passthrough sized to allow a center portion of the LED to be viewed therethrough;

an aperture comprising;

a first leg; and

a second leg substantially perpendicular to the first leg, and

an aperture passthrough positioned at an intersection of the first leg and the second leg, said aperture passthrough sized to allow a center section of the LED to be viewed therethrough, said aperture configured to be positioned within the first groove and the second groove of the aperture plate;

a dome lens, proximate to the LED, wherein a position of the LED is one of;

at a focal length of the dome lens and within a focal length of the dome lens;

a retainer configured to;

contact the dome lens soley along a curved surface of the dome lens to retain the dome lens proximate to the LED; and

an attachment section configured to;

attach the lens assembly to the housing.

2. The lighting assembly of claim 1, wherein the retainer comprising:

a first surface;

an opposing second surface, and

a retainer passthrough extending between the first surface and the opposing second surface, said retainer passthrough comprising;

a retainer passthrough surface configured to contact the curved surface of said dome lens.

3. The lighting assembly of claim 2, wherein the retainer passthrough surface is one of:

substantially conformal and substantially tangential to the curved surface of the dome lens.

4. The lighting assembly of claim 1, wherein the attachment section comprises one of:

a screw thread, a bayonet connection, a snap fit connection and a butt fit connection.

5. The lighting assembly of claim 1, wherein the attachment section is integral to the lens assembly.

6. The lighting assembly of claim 1, wherein the attachment section is a coupler.

7. The lighting assembly of claim 1 wherein the LED is positioned within a focal length of said at least one projection lens.

8. The lighting assembly of claim 1, wherein the dome lens comprises:

a spherical cap constructed from a sphere cut along a chordal plane.

9. The lighting assembly of claim 1, wherein the dome lens comprises:

a spherical cap fabricated into a desired shape.

10. The lighting assembly of claim 1, wherein the lens assembly comprises:

at least one deformation on an outer surface of the lens assembly.

11. The lighting assembly of claim 10, wherein the at least one deformation comprises one of:

a groove and a protrusion.

12. The lighting assembly of claim 1, wherein the printed circuit board comprises:

a switch configured to;

apply an electrical energy to the LED.

13. The lighting assembly of claim 1, wherein the lighting element further comprises:

a ring assembly containing the PCB therein, said ring assembly in physical contact with at least one of;

the housing and the attachment section.

14. The lighting assembly of claim 1, further comprising:

an anti-reflective layer on at least one surface of the dome lens.

15. The lighting assembly of claim 13, further comprising:

a threaded ring in contact with said ring assembly.

16. The lighting assembly of claim 15, wherein said attachment section comprises a threaded section configured to engage said threaded ring.

17. A lighting assembly comprising:

a housing;

a lighting element, positioned within the housing, comprising;

a substrate;

comprising;

a printed circuit board containing electronic components thereon;

a Light Emitting Diode (LED) electrically connected to the printed circuit board;

an aperture holder positioned on the printed circuit board, the aperture holder comprising;

at least a first depression along a diameter of the aperture holder; and

a second depression, along a diameter of the aperture holder, substantially perpendicular to the first depression; and

an aperture holder opening positioned at an intersection of the first depression and the second depression, the opening sized to allow a center portion of the LED to be viewable; and

an aperture positioned within the first depression and the second depression of the aperture holder, the aperture including an opening no greater in size that a size of the aperture holder opening;

a dome lens positioned proximal to the aperture holder opening, wherein the LED is positioned at or within a focal length of the dome lens, and

a ring element positioned along a perimeter of the substrate;

a retainer comprising;

a first surface in contact with said ring element;

a second surface opposing said first surface; and

a retainer passthrough extending between the first surface and the second surface, said retainer passthrough configured to;

contact said dome lens, solely along a curved surface of the dome lens, wherein said contact to the dome lens is one of;

substantially conformal and substantially tangential to said curved surface of the dome lens;

a lens assembly comprising;

at least one lens; and

a connector configured to;

attach the lens assembly to the housing.

18. The light assembly of claim 17, further comprising:

an anti-reflective layer on at least one surface of the dome lens.

19. The light assembly of claim 17, wherein the retainer is one of:

attached to the lens assembly and separate from the lens assembly.