Illumination apparatus

• US 8,981,631 B2
• Filed: 09/10/2013
• Issued: 03/17/2015
• Est. Priority Date: 10/31/2012
• Status: Active Grant

• Current Assignee: Lextar Electronics Corporation
• Original Assignee: Lextar Electronics Corporation
• Inventors: Lin, Sheng-Wang
• Primary Examiner(s): Mai, Anh
• Assistant Examiner(s): ZIMMERMAN, GLENN D
• Application Number:
  US14/022,359
• Publication Number:
  US 20140117832A1
• Time in Patent Office: 553 Days
• Field of Search: 313/110, 313/498, 313/112, 257/98, 362/277, 362/471, 362/455, 362/433
• US Class Current: 313/110
• CPC Class Codes: G02B 6/003 Lens or lenticular sheet or layer
• CPC Class Codes: G02B 6/0086 Positioning aspects
• CPC Class Codes: H05K 1/181 associated with surface mounted components
• CPC Class Codes: H05K 2201/10106 Light emitting diode [LED]
• CPC Class Codes: H05K 2201/10121 Optical component, e.g. opto-electronic component
• CPC Class Codes: H05K 2201/10598 Means for fastening a component, a casing or a heat sink whereby a pressure is exerted on the component towards the PCB
• CPC Class Codes: H05K 3/0058 Laminating printed circuit boards onto other substrates, e.g. metallic substrates H05K1/0281 takes precedence

Abstract

An illumination apparatus includes a substrate, an illumination element and a lens structure. The illumination element is disposed on the substrate. The lens structure is disposed above the illumination element, and includes a lens body and a plurality of lens stands. The lens body is positioned above the illumination element. The lens stands are disposed on the bottom of the lens body. The substrate has a plurality of tunnels are around the illumination element. The lens stands respectively insert into the tunnels, so that the lens body is fastened on the substrate.

Claims

1. An illumination apparatus, comprising:

a substrate having a top surface;

an illumination element disposed on the top surface of the substrate; and

a lens structure disposed above the illumination element, the lens structure comprising;

a lens body positioned above the illumination element and having a bottom surface; and

a plurality of lens stands disposed on the bottom surface of the lens body,

wherein the substrate has a plurality of tunnels around the illumination element, wherein the lens stands respectively insert into the tunnels, so that the lens body is fastened on the substrate;

wherein each of the lens stands comprises;

a supporting part supporting the lens body; and

a threading part connected to the supporting part and threading through the tunnel, wherein the length of the threading part is long enough to make the bottom of the threading part exposed out of the substrate, wherein the cross-sectional area of the supporting part taken along a direction parallel to the top surface of the substrate is greater than the cross-sectional area of the threading part taken along the direction parallel to the top surface of the substrate.

2. The illumination apparatus of claim 1, further comprising a plurality of fasteners, wherein each of the fasteners respectively enfolds the exposed bottom of the threading part of each of the lens stands.

3. The illumination apparatus of claim 2, wherein at least one of the fasteners is a screw nut, and at least one of the threading parts includes a screw thread on the bottom thereof, wherein the screw nut is screwed on the bottom of the threading part.

4. The illumination apparatus of claim 2, wherein at least one of the fasteners is an elastic ring, and at least one of the threading parts includes a protrusion part on the bottom thereof, wherein the elastic ring is clipped between the substrate and the protrusion part.

5. The illumination apparatus of claim 1, wherein the threading part is fitted to the tunnel.

6. The illumination apparatus of claim 1, wherein the cross-sectional area of the supporting part taken along the direction parallel to the top surface of the substrate is greater than the cross-sectional area of the tunnel taken along the direction parallel to the top surface of the substrate.

7. The illumination apparatus of claim 1, wherein thickness of the supporting part is greater than thickness of the illumination element.

8. The illumination apparatus of claim 1, wherein the substrate comprises a circuit board.

9. The illumination apparatus of claim 8, wherein the substrate comprises a back plate.

10. The illumination apparatus of claim 9, wherein the back plate is a cover of a display.

11. The illumination apparatus of claim 10, wherein the material of the back plate is metal.

12. An illumination apparatus, comprising:

a substrate;

an illumination element disposed on the substrate; and

a lens structure disposed above the illumination element, the lens structure comprising;

a lens body positioned above the illumination element;

a plurality of lens stands disposed on the bottom of the lens body; and

a plurality of fasteners;

wherein the substrate has a plurality of tunnels around the illumination element, wherein the lens stands respectively insert into the tunnels, so that the lens body is fastened on the substrate;

wherein each of the lens stands comprises;

a supporting part supporting the lens body; and

a threading part connected to the supporting part and threading through the tunnel;

wherein the length of the threading part is long enough to make the bottom of the threading part exposed out of the substrate, wherein each of the fasteners respectively enfolds the exposed bottom of the threading part of each of the lens stands, wherein at least one of the fasteners is an elastic ring, and at least one of the threading parts comprises a protrusion part on the bottom thereof, wherein the elastic ring is clipped between the substrate and the protrusion part.

13. The illumination apparatus of claim 12, wherein the cross-sectional area of the supporting part taken along a direction parallel to a top surface of the substrate is greater than the cross-sectional area of the threading part taken along the direction parallel to the top surface of the substrate.

14. The illumination apparatus of claim 13, wherein the threading part is fitted to the tunnel.

15. The illumination apparatus of claim 13, wherein the cross-sectional area of the supporting part taken along the direction parallel to the top surface of the substrate is greater than the cross-sectional area of the tunnel taken along the direction parallel to the top surface of the substrate.

16. The illumination apparatus of claim 12, wherein thickness of the supporting part is greater than thickness of the illumination element.

17. The illumination apparatus of claim 12, wherein the substrate comprises a circuit board.

18. The illumination apparatus of claim 17, wherein the substrate comprises a back plate which is a cover of a display.