Light source module

Patent metadata

Field	Value
Publication number	US-10090074-B2
Application number	US-201615342564-A
Country	US
Kind code	B2
Filing date	Nov 3, 2016
Priority date	Sep 13, 2016
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

A light source module is adapted to perform a light irradiation process on an object. The light source module includes a transparent cover, a reflector and a light emitting unit. The reflector covers the transparent cover, and the reflector and the transparent cover define a containing space. The light emitting unit is disposed inside the containing space. A perpendicular working distance from the transparent cover to the object is WD, a semi-minor axis of the reflector is A, and a semi-major axis of the reflector is B, wherein WD=2 A-3 to 3.5 A-3, and B=2 A to 2.5 A.

First claim

What is claimed is:

1. A light source module adapted to perform a light irradiation process on an object, the light source module comprising:
a transparent cover;
a reflector having an elliptical curved surface and covering the transparent cover, the reflector and the transparent cover defining a containing space; and
a light emitting unit disposed inside the containing space, wherein a specified perpendicular working distance from the transparent cover to the object is WD which is a fixed value, and the specified perpendicular working distance is smaller than or equal to 15 cm, a semi-minor axis of the reflector is A, and a semi-major axis of the reflector is B, wherein WD=2 A-3 to 3.5 A-3, and B=2 A to 2.5 A,
wherein the light emitting unit is located at a first focus of the elliptical curved surface of the reflector,
wherein the object is located outside the containing space and at a second focus of the elliptical curved surface of the reflector, and the object is coated with a photopolymer,
wherein the light emitting unit comprises a plurality of light emitting diodes, and all of the plurality of light emitting diodes are arranged in a column along one direction which is perpendicular to the semi-major axis.

2. The light source module as recited in claim 1 , wherein a material of the transparent cover is glass.

3. The light source module as recited in claim 1 , wherein the plurality of light emitting diodes are arranged in an array.

4. The light source module as recited in claim 1 , wherein each of the plurality of light emitting diodes is a Lambertian light emitting diode.

5. The light source module as recited in claim 1 , wherein a ratio between a dimension of each of the plurality of light emitting diodes and the semi-major axis is greater than 0.01.

6. The light source module as recited in claim 5 , wherein the dimension of each of the plurality of light emitting diodes is greater than 80 mil.

7. The light source module as recited in claim 1 , wherein a light emission axis of each of the plurality of light emitting diodes is parallel to the semi-major axis.

8. The light source module as recited in claim 1 , wherein a light emission axis of each of the plurality of light emitting diodes forms an angle with respect to the semi-major axis.

9. The light source module as recited in claim 1 , wherein the reflector has a three-quarter elliptical shape formed by extending a semi-elliptical shape.

10. A light source module adapted to perform a light irradiation process on an object, the light source module comprising:
a transparent cover;
a reflector covering the transparent cover, the reflector and the transparent cover defining a containing space, wherein the reflector includes a plurality of sub-reflectors having an elliptical curved surface and sharing a common focus; and
a light emitting unit disposed inside the containing space, wherein a specified perpendicular working distance from the transparent cover to the object is WD which is a fixed value, and the specified perpendicular working distance is smaller than or equal to 15 cm, a semi-minor axis of the reflector is A, and a semi-major axis of the reflector is B, wherein WD=2 A-3 to 3.5 A-3, and B=2 A to 2.5 A, and the light emitting unit is located on the common focus,
wherein the object is coated with a photopolymer.

11. A method of performing a light irradiation process on an object, comprising:
providing a light source module that comprises:
a transparent cover;
a reflector, covering the transparent cover, the reflector and the transparent cover defining a containing space; and
a light emitting unit disposed inside the containing space; and

providing the object that is coated with a photopolymer; and
the light emitting unit of the light source module irradiating a light beam onto the object so as to perform the light irradiation process,
wherein when the light beam emitted by the light emitting unit is irradiated on the object, a specified perpendicular working distance from the transparent cover to the object WD is a fixed value, and a semi-minor axis of the reflector A and a semi-major axis of the reflector B are set to satisfy the following relation:
WD=2 A-3 to 3.5 A-3 and
B=2 A to 2.5 A, and
wherein the specified perpendicular working distance WD is smaller than or equal to 15 cm.

Assignees

• Playnitride Inc

Inventors

• Sun sheng-yuan
• LU Wen-jie
• Sheu Gwo-Jiun

Classifications

• G21K5/10 Primary

  with provision for relative movement of beam source and object to be irradiated · CPC title

• F21V7/08

  with elliptical curvature · CPC title

• B01J19/122 Primary

  Incoherent waves (gamma-radiation B01J19/082) · CPC title