Light guide assembly

Patent metadata

Field	Value
Publication number	US-11867941-B2
Application number	US-202318143089-A
Country	US
Kind code	B2
Filing date	May 4, 2023
Priority date	May 4, 2022
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

Abstract

A light guide assembly, comprising: a substrate and a light guide disposed on the substrate, wherein the top surface of the body comprises a first protrusion having a first slanting surface and a second slanting surface opposite to the first slanting surface for reflecting lights entering into the body, wherein a first outer surface of the body extends from a first lateral surface to the first slanting surface, wherein a highest point of the first slanting surface is located between the first lateral surface and a second lateral surface opposite to the first lateral surface, and a highest point of the second slanting surface is located between the first lateral surface and a lowest point of the second slanting surface.

First claim

What is claimed is:

1. A light guide assembly, comprising:
a substrate; and
a light guide, disposed on the substrate, wherein the light guide comprises a body having a top surface, a first lateral surface, and a second lateral surface opposite to the first lateral surface of the body, wherein the top surface of the body comprises a first protrusion having a first slanting surface and a second slanting surface opposite to the first slanting surface for reflecting lights entering into the body, wherein a first outer surface of the body extends from the first lateral surface to the first slanting surface, wherein a highest point of the first slanting surface is located between the first lateral surface and the second lateral surface, and a highest point of the second slanting surface is located between the first lateral surface and a lowest point of the second slanting surface.

2. The light guide assembly according to claim 1 , wherein the top surface of the body further comprises a second protrusion having a third slanting surface and a fourth slanting surface opposite to the third slanting surface for reflecting lights entering into the body, wherein a second outer surface of the body extends from the second lateral surface to the fourth slanting surface, wherein a highest point of the fourth slanting surface is located between the first lateral surface and the second lateral surface, and a highest point of the third slanting surface is located between the second lateral surface and a lowest point of the third slanting surface.

3. The light guide assembly according to claim 2 , wherein the body of the light guide comprises a top portion located above the substrate and a bottom portion located below the substrate, wherein the light guide forms a hollow space located below the top portion and above the bottom portion of the light guide, wherein a third outer surface of the body extends from the first lateral surface to the bottom surface of the body via a fifth slanting surface of the body, wherein a lowest point of the fifth slanting surface is located between the first lateral surface and the second lateral surface, wherein the body comprises a sixth slanting surface adjacent to the hollow space, wherein a lowest point of the sixth slanting surface is located between the first lateral surface and a highest point of the sixth slanting surface, wherein a first light enters into the body through the first lateral surface, wherein the first light is directed to the bottom part of the light guide by sequentially reflecting the first light by the sixth slanting surface, the second slanting surface, the first slanting surface and the fifth slanting surface.

4. The light guide assembly according to claim 3 , wherein a first LED is disposed on the substrate outside the body, wherein the first LED is located at a lateral side of the first lateral surface for emitting the first light into the body via the first lateral surface.

5. The light guide assembly according to claim 4 , wherein the first LED is a first vertical LED, wherein the first vertical LED emits the first light to the first lateral surface in a horizontal direction.

6. The light guide assembly according to claim 3 , wherein a fourth outer surface of the body extends from the second lateral surface to the bottom surface of the body via a seventh slanting surface, wherein a lowest point of the seventh slanting surface is located between the first lateral surface and the second lateral surface, wherein the body comprises an eighth slanting surface adjacent to the hollow space, wherein a lowest point of the eighth slanting surface is located between the second lateral surface and a highest point of the eighth slanting surface, wherein a second light enters into the body through the second lateral surface, wherein the second light is directed to the bottom part of the light guide by sequentially reflecting the second light by the eighth slanting surface, the third slanting surface, the fourth slanting surface and the seventh slanting surface.

7. The light guide assembly according to claim 6 , wherein a first LED is disposed on the substrate outside the body, wherein the first LED is located at a lateral side of the first lateral surface for emitting a first light into the body via the first lateral surface; and wherein a second LED is disposed on the substrate outside the body, wherein the second LED is located at a lateral side of the second lateral surface for emitting a second light into the body via the second lateral surface.

8. The light guide assembly according to claim 7 , wherein the first LED is a first vertical LED, wherein the first vertical LED emits the first light to the first lateral surface in a horizontal direction; and the second LED is a second vertical LED, wherein the second vertical LED emits the second light to the second lateral surface in a horizontal direction.

9. The light guide assembly according to claim 8 , wherein the body comprises a front portion having a ring shape, wherein a connector is disposed inside a hollow space of the body with a portion of the connector being enclosed by the front portion.

10. The light guide assembly according to claim 1 , wherein the top surface of the body comprises a first portion having a shape of a sawtooth swing up and down, wherein said first portion is located between the first protrusion and the second protrusion, and a first height of said first portion is less than a second height of the first protrusion and a third height of the second protrusion, respectively.

11. The light guide assembly according to claim 9 , wherein the connector is a USB Type C connector.

12. The light guide assembly according to claim 9 , wherein an intensity distribution of all of the points of the entire front surface of the front portion in a range of (1.2˜1.4)×10 6 Lux.

13. The light guide assembly according to claim 1 , wherein the body of the light guide comprises a transparent resin, wherein a diffusion powder is disposed in the transparent resin.

14. The light guide assembly according to claim 1 , wherein a tooling gate is formed on the top portion of the body of the light guide, wherein a first point is located inside the boundary of the tooling gate, wherein a first distance from the first point to the second slanting surface is equal to a second distance from the first point to the third slanting surface.

15. The light guide assembly according to claim 1 , wherein a left portion of the body and a right portion of the body are symmetrical with respect to a middle line between the left portion and the right portion of the body.

16. The light guide assembly according to claim 5 , wherein the radiation angle of the first vertical LED is in a range of 90˜100°.

17. The light guide assembly according to claim 1 , wherein the top surface of the first protrusion comprises a flat surface between the first slanting surface and the second slanting surface.

18. The light guide assembly according to claim 1 , wherein a first recess is formed on a first lateral surface of the substrate, wherein a first portion of the body is disposed in the first recess.

19. The light guide assembly according to claim 18 , wherein a second recess is formed on the first lateral surface of the substrate, wherein a second portion of the body is disposed in the second recess.

20. The light guide assembly according to claim 19 , wherein a third recess is formed on the first lateral surface of the substrate, wherein a portion of a connector is disposed in the third reces

Assignees

• Cyntec Co Ltd

Inventors

• Yang Chi-Jui

Classifications

• G02B6/0073 Primary

  Light emitting diode [LED] · CPC title

• H01F1/143 Primary

  in the form of wires (H01F1/147 takes precedence) · CPC title

• G02B6/0015

  provided on the surface of the light guide or in the bulk of it · CPC title

• H01R13/7175

  Light emitting diodes (LEDs) · CPC title

• H01F19/02 Primary

  Audio-frequency transformers or mutual inductances, i.e. not suitable for handling frequencies considerably beyond the audio range · CPC title