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Laser internal engraving apparatus for transparent material

A transparent material, laser technology, used in laser parts, lasers, semiconductor lasers, etc., can solve the problems of low laser pulse repetition frequency, poor beam quality, equipment maintenance and use trouble, and achieve good laser output mode and engraving speed. Improve the effect of convenient equipment maintenance

Inactive Publication Date: 2005-03-16
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the laser internal engraving device is mainly used for crystal quartz glass. The disadvantages of this laser internal engraving device are: the pulse laser pumped by the flash lamp is mainly used, the beam quality is poor, the explosion point is large after focusing, and the engraved image is not fine; Q-switching, the laser pulse repetition frequency is low (only about 100 Hz), and the speed is slow, so it is not suitable for internal engraving of large-format ordinary glass and other transparent materials; due to the use of flash lamp pumping, the life of the laser pump source is short, and the equipment The maintenance and use of the
Therefore, the current laser engraving products are limited to a limited number of small handicrafts, which limits the expansion of the use of laser transparent material internal engraving

Method used

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  • Laser internal engraving apparatus for transparent material
  • Laser internal engraving apparatus for transparent material
  • Laser internal engraving apparatus for transparent material

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Embodiment Construction

[0014] Such as figure 1 As shown, a transparent material laser internal engraving device includes a laser 1 , a beam expander 2 , a first vibrating mirror 3 , a second vibrating mirror 4 , an F-θ focusing mirror 5 and a computer 6 .

[0015] Laser 1 generates 1-10 kHz Q-switched frequency-multiplied laser pulses with good beam quality;

[0016] The beam expander 2 expands the diameter of the laser beam output by the laser 1, and compresses the divergence angle, so that the diameter of the spot after the laser beam is focused by the focusing lens 5 is reduced to obtain a small focused spot;

[0017] The first vibrating mirror 3 and the second vibrating mirror 4 are placed vertically in space; the first vibrating mirror 3 is installed on the x-axis, the reflector surface is parallel to the z-axis, perpendicular to the xy plane, and the angle between the x-axis and the y-axis is the same 45 degrees, the laser beam parallel to the x-axis after the beam expander 2 is deflected int...

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Abstract

The invention provides a kind of laser inside carving device of transparent material. It includes laser instrument, ray-expanding mirror, the first shaking mirror, the second shaking mirror, F- Theta focusing mirror and computer. The laser instrument contains full-reflecting mirror, sound and light Q-adjusting device, semiconductor pump module, frequency doubler crystal and exporting mirror. The full-reflecting mirror is plated with fundamental frequency full-reflecting membrane layer or is plated with fundamental frequency and multiplier frequency doule full-reflecting membrane layer. The exporting mirror is plated with membrane layer whose throughing ratio to fundamental frequency light is 4%~10% and to multiplier frequency light is full. The laser instrument produces 1~10 kilohertz Q-adjusting multiplier frequency laser pulse output. The computer controls the first shaking mirror and the second shaking mirror to separately move swiftly in X, Y direction, thus makes the laser beam that has been through the ray-expanding mirror to move in scanning in XY direction, and controls one dimension electrical controlling displacement platform to realize the moving in Z direction of the focusing mirror and the transparent material. The advantage of the invention is that its laser outputing mode is good, light power is steady and efficient, the carving ratio is swift, and is suitable for the carving of transparent material with big breadth.

Description

technical field [0001] The invention relates to a laser internal engraving device for transparent materials. Background technique [0002] Internal engraving devices for ordinary glass and other transparent materials have become an emerging development direction for laser internal engraving. At present, the laser internal engraving device is mainly used for crystal quartz glass. The disadvantages of this laser internal engraving device are: the pulse laser pumped by the flash lamp is mainly used, the beam quality is poor, the explosion point is large after focusing, and the engraved image is not fine; Q-switching, the laser pulse repetition frequency is low (only about 100 Hz), and the speed is slow, so it is not suitable for internal engraving of large-format ordinary glass and other transparent materials; due to the use of flash lamp pumping, the life of the laser pump source is short, and the equipment Trouble in maintenance and use. Therefore, the current laser engravi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/02B23K26/362B44B1/00H01S5/00
Inventor 朱晓朱长虹齐丽君朱广志
Owner HUAZHONG UNIV OF SCI & TECH
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