Light emitting apparatus and lighting module

• US 10,337,689 B2
• Filed: 02/08/2018
• Issued: 07/02/2019
• Est. Priority Date: 03/31/2017
• Status: Expired due to Fees

• Current Assignee: Everlight Electronics Company Limited
• Original Assignee: Everlight Electronics Company Limited
• Inventors: Liao, Yi-Hui, Wang, Chung-Wei, Li, Shun-Chang
• Primary Examiner(s): Raabe, Christopher M
• Application Number:
  US15/892,010
• Publication Number:
  US 20180283642A1
• Time in Patent Office: 509 Days
• Field of Search: 362 19
• CPC Class Codes: B60Q 1/0076 Switches therefor B60Q1/1446, B60Q1/343, B60Q1/40 take precedence
• CPC Class Codes: F21S 41/151 arranged in one or more lines
• CPC Class Codes: F21S 41/153 arranged in a matrix
• CPC Class Codes: F21S 41/19 Attachment of light sources or lamp holders achieving variable light distribution by movable light sources F21S41/657
• CPC Class Codes: F21S 41/285 Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24-F21S41/28
• CPC Class Codes: F21S 43/14 Light emitting diodes [LED]
• CPC Class Codes: F21S 43/15 Strips of light sources
• CPC Class Codes: F21S 43/19 Attachment of light sources or lamp holders
• CPC Class Codes: F21S 43/195 Details of lamp holders, terminals or connectors
• CPC Class Codes: F21S 43/26 Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
• CPC Class Codes: F21V 9/14 for producing polarised light
• CPC Class Codes: F21W 2106/00 Interior vehicle lighting devices
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G02B 27/0944 Diffractive optical elements, e.g. gratings, holograms gratings per se G02B5/18; holograms used as optical elements per se G02B5/32
• CPC Class Codes: H01L 23/5387 Flexible insulating substrates H01L23/5388 takes precedence
• CPC Class Codes: H01L 25/0753 the devices being arranged next to each other
• CPC Class Codes: H01L 33/502 Wavelength conversion materials
• CPC Class Codes: H01L 33/62 Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
• CPC Class Codes: H05B 45/00 Circuit arrangements for operating light-emitting diodes [LED]
• CPC Class Codes: H05B 45/325 Pulse-width modulation [PWM]
• CPC Class Codes: H05B 45/36 : Circuits for reducing or suppressing harmonics, ripples or electromagnetic interferences [EMI]
• CPC Class Codes: H05B 45/50 : responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits

Abstract

The present invention provides a light emitting apparatus and a lighting module, comprising: a circuit substrate, a plurality of optical sources and an optical element; the optical element comprises a translucent element and an interference element; the plurality of light sources are arranged on the circuit substrate for lighting the optical element; the optical element is arranged above the plurality of light sources; and the interference element is arranged on the translucent element, which is used to make light emitted from each of the light sources offset interference in a first polarization direction, enhance interference in a second polarization direction, and emit through the translucent element. The light emitting apparatus and the lighting module of the present invention are employed to provide a more diversified optical pattern to the user and improve the user experience.

Claims

1. A light emitting apparatus, comprising:

a circuit substrate, a plurality of optical sources and an optical element;

wherein the optical element comprises a translucent element and an interference element;

the plurality of light sources are arranged on the circuit substrate for lighting the optical element;

the optical element is arranged above the plurality of light sources; and

the interference element is arranged on the translucent element, and the interference element is used to make light emitted from each of the light sources offset interference in a first polarization direction, enhance interference in a second polarization direction, and emit through the translucent element.

2. The light emitting apparatus according to claim 1, wherein a surface of the optical element facing the light sources is curved along the direction away from the light sources.

3. The light emitting apparatus according to claim 1, wherein the interference element is made of micro units with a same direction.

4. The light emitting apparatus according to claim 3, wherein the plurality of light sources are arranged in series with each other and linearly arranged on the circuit substrate along a direction same as the direction of the micro units.

5. The light emitting apparatus according to claim 4, wherein the plurality of light sources are divided into at least two sets, half power angles of the light sources in a same set are the same, and half power angles of the light sources in different sets are different;

and half power angle of a light source is different from half power angle of an adjacent light source arranged on two adjacent sides of the light source.

6. The light emitting apparatus according to claim 4, wherein the plurality of light sources are divided into at least two sets and half power angle of each of the light sources is the same;

and a height of a surface of the circuit substrate where a light source is located is different from a height of a surface of the circuit substrate where an adjacent light source arranged on two adjacent sides of the light source are located.

7. The light emitting apparatus according to claim 3, wherein the plurality of light sources are arranged in series with each other and linearly arranged on the circuit substrate along a direction different from the direction of the micro units.

8. The light emitting apparatus according to claim 3, wherein the plurality of light sources are divided into at least two sets;

and the light sources in each set are connected in series with each other, and linearly arranged on the circuit substrate along a direction different from the direction of the micro units.

9. The light emitting apparatus according to claim 8, wherein different sets of the light sources are arranged parallel to each other on the circuit substrate.

10. The light emitting apparatus according to claim 9, wherein the plurality of light sources are divided into three sets, and a surface of the circuit substrate where the set of light sources arranged in the middle is located is lower than a surface of the circuit substrate where the two sets of light sources on two adjacent sides are located.

11. The light emitting apparatus according to claim 8, wherein different sets of light sources are arranged in different directions on the circuit board.

12. The light emitting apparatus according to claim 11, wherein the plurality of light sources are divided into two sets, and the two sets of the light sources are arranged in a herringbone on the circuit substrate.

13. The light emitting apparatus according to claim 11, wherein the plurality of light sources are divided into three sets, and the three sets of light sources are arranged in a herringbone on the circuit substrate.

14. The light emitting apparatus according to claim 8, wherein the arrangement directions of the each set of the light sources on the circuit substrate are partially same.

15. The light emitting apparatus according to claim 14, wherein the plurality of light sources are divided into four sets, and the four sets of light sources are arranged in a parallelogram on the circuit substrate.

16. The light emitting apparatus according to claim 1, wherein the interference element comprises at least two types of micro units, and there are a plurality of the micro units in each type;

and the directions of the micro units of the same type are the same, and the directions of the micro units of different types are different.

17. The light emitting apparatus according to claim 16, wherein the different micro units are alternately arranged to form an N-gon, and N is greater than or equal to 3;

and the direction of the micro units in the micro units is different from directions of micro units in adjacent micro units;

the plurality of light sources are divided into N sets;

the circuit substrate is a stereoscopic shape and has N stepped planes respectively corresponding to the N sets of light sources; and

the each set of light sources are arranged in an N-gon on each of the stepped planes.

18. The light emitting apparatus according to claim 17, wherein the each set of the light sources are symmetrically distributed with respect to a central axis of the circuit substrate.

19. The light emitting apparatus according to claim 17, wherein a blocking portion is arranged below the translucent element on which the different micro units are arranged.

20. The light emitting apparatus according to claim 1, wherein a tenon structure is arranged on the translucent element, and the microstructure is arranged on the tenon structure.

21. The light emitting apparatus according to claim 1, wherein the plurality of light sources are arranged at equal intervals from each other.

22. The light emitting apparatus according to claim 8, wherein the plurality of light sources in the each set are arranged at equal intervals from each other.

23. The light emitting apparatus according to claim 1, wherein the circuit substrate has an outer surface, a plurality of slots and a plurality of bending structures corresponding to the plurality of light sources, respectively;

the slots are formed on the outer surface to form the bending structure connecting with the outer surface;

the bending structure protrudes from the outer surface and forms an included angle with the outer surface; and

the light sources are arranged on the bending structure.

24. The light emitting apparatus according to claim 1, wherein the light sources are light emitting diodes, and the light emitting diodes are made of colloid, and humidity and oxygen permeability of the colloid is lower than a preset value.

25. The light emitting apparatus according to claim 1, wherein the light sources are light emitting diodes, the light emitting diodes are coated with fluorescent layers which comprise base materials and fluorescent materials, and the base materials are made of ceramic materials or resin materials.

26. The light emitting apparatus according to claim 3, wherein the micro units are arranged to form a concave-convex surface, and distance between a lowest point and a highest point of the concave-convex surface is no more than 500 microns.

27. A lighting module, comprising:

the light emitting apparatus according to claim 1 and a control circuit, wherein the control circuit is configured to control the on and off of the plurality of light sources in the light emitting apparatus.

28. The lighting module according to claim 27, wherein the control circuit comprises a power supply unit and a driving unit;

and the driving unit comprises a microcontroller and a light source driver;

the power supply unit is electrically connected with the microcontroller and the light source driver, and powers the microcontroller and the light source driver, respectively;

the microcontroller is electrically connected to the light source driver for modulating pulse width of the light source driver; and

the light source driver is electrically connected to the plurality of light sources for driving the plurality of light sources.

29. The lighting module according to claim 27, wherein the control circuit is configured to light the plurality of light sources according to a preset time sequence.