Light emitting method and light emitting device

Patent metadata

Field	Value
Publication number	US-2019204584-A1
Application number	US-201815860152-A
Country	US
Kind code	A1
Filing date	Jan 2, 2018
Priority date	Jan 2, 2018
Publication date	Jul 4, 2019
Grant date	—

Abstract

A light emitting method includes passing a laser beam through at least one offset assembly and a focusing assembly in sequence, and actuating, by a control-manipulating mechanism, the offset assembly to cause the laser beam to be offset, so that the laser beam can quickly produce a controllable opening of any shape in a drilling process.

First claim

What is claimed is:

1 . A light emitting method, comprising:
passing a light beam through at least an offset assembly and a focusing assembly in sequence; and making the light beam generate an offset by a control-manipulating mechanism to actuate the offset assembly, wherein the control-manipulating mechanism has a programmable logic controller planning a displacement path of the offset assembly to displace the offset assembly and control an offset path of the light beam.

2 . The light emitting method of claim 1 , wherein the light beam is laser.

3 . The light emitting method of claim 1 , wherein the light beam is offset in a parallel manner.

4 . The light emitting method of claim 1 , further comprising forming an opening by the light beam.

5 . The light emitting method of claim 4 , wherein the programmable logic controller plans the displacement path of the offset assembly based on a moving distance of the light beam and an inclination angle of a wall of the opening.

6 . The light emitting method of claim 1 , wherein the displacement path of the offset assembly includes a moving distance variation or a rotational angle variation.

7 . The light emitting method of claim 1 , wherein the offset assembly includes:
a beam splitter; a wave plate provided above the beam splitter; and a reflecting mirror provided above the wave plate, wherein the light beam is incident on and reflected by the beam splitter, passes through the wave plate, is reflected by the reflecting mirror, passes through the wave plate once again, and is reflected and outputted by the beam splitter.

8 . The light emitting method of claim 1 , wherein the control-manipulating mechanism includes a galvo motor rotating the offset assembly by an offset angle related to an offset distance of the light beam.

9 . The light emitting method of claim 1 , wherein the light beam passes through two sets of the offset assemblies, one of which is used for offsetting the light beam in an X-direction, and the other of which is used for offsetting the light beam in a Y-direction perpendicular to the X-direction.

10 . The light emitting method of claim 1 , further comprising guiding, by a scanning assembly, the light beam from the offset assembly to the focusing assembly.

11 . A light emitting device, comprising:
an offset assembly configured for a light beam to pass therethrough; a focusing assembly configured for receiving the light beam from the offset assembly; and a control-manipulating mechanism configured for actuating the offset assembly to offset the light beam, wherein the control-manipulating mechanism has a programmable logic controller planning a displacement path of the offset assembly to displace the offset assembly and control an offset path of the light beam.

12 . The light emitting device of claim 11 , wherein the light beam is laser, and the light beam is offset in a parallel manner.

13 . The light emitting device of claim 11 , wherein the light beam is configured for forming an opening.

14 . The light emitting device of claim 13 , wherein the programmable logic controller plans the displacement path of the offset assembly based on a moving distance of the light beam and an inclination angle of a wall of the opening.

15 . The light emitting device of claim 11 , wherein the offset assembly includes:
a beam splitter; a wave plate provided above the beam splitter; and a reflecting mirror provided above the wave plate.

16 . The light emitting device of claim 11 , wherein the control-manipulating mechanism includes a galvo motor rotating the offset assembly by an offset angle related to an offset distance of the light beam.

17 . The light emitting device of claim 11 , wherein the light beam passes through two sets of the offset assemblies, one of which is used for offsetting the light beam in an X-direction, and the other of which is used for offsetting the light beam in a Y-direction perpendicular to the X-direction.

18 . The light emitting device of claim 11 , further comprising a scanning assembly provided between the offset assembly and the focusing assembly and configured for guiding the light beam from the offset assembly to the focusing assembly.

19 . The light emitting device of claim 18 , wherein the scanning assembly is configured for controlling the offset path of the light beam.

20 . The light emitting device of claim 19 , wherein the offset path is a circular, square, triangular, polygonal or curved path to be used in a laser manufacturing process of complicated parts.

Assignees

• Ind Tech Res Inst

Inventors

• Hu Pin-Hao
• Lu Shao-Chuan
• Lee Hsuan-Chang
• Chou Po-Huan
• Lee Min-Kai

Classifications

• G02B27/286

  for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another (G02B5/3083 takes precedence; light guide coupling means utilising polarising elements G02B6/34) · CPC title

• G02B26/0816 Primary

  by means of one or more reflecting elements · CPC title

• B23K26/082

  Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head · CPC title

• G02B27/283

  used for beam splitting or combining · CPC title

• B23K26/067

  Dividing the beam into multiple beams, e.g. multi-focusing · CPC title