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Small infrared laser beam expanding and collimating device

An infrared laser and laser technology, which is applied in the field of laser beam expansion, can solve the problems of limited space for the use of external optical paths and large space for the construction of external optical paths.

Pending Publication Date: 2021-01-22
北京卓镭激光技术有限公司
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  • Description
  • Claims
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Problems solved by technology

[0003] In the field of practical laser applications, the use of space for the external optical path is often limited, and there are requirements for saving space. Therefore, higher requirements are put forward for the total working length of the laser beam expander collimation device, while the traditional laser beam expander collimation device usually Need to use a long working distance, so there is a lot of space for the construction of foreign optical paths in practical laser applications

Method used

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  • Small infrared laser beam expanding and collimating device

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Embodiment Construction

[0025] The following is attached Figure 1-3 The application is described in further detail.

[0026] The embodiment of the present application discloses a small-sized infrared laser beam expander and collimator. refer to figure 1 , in order to make the infrared laser beam expander and collimator more miniaturized. The small infrared laser beam expander and collimator device includes a beam expander component and a collimator component arranged in sequence along the transmission direction of the infrared laser, the beam expander component includes a first lens L1, and the collimator component includes a second lens L2. The first lens L1 and the second lens L2 are located on the same optical axis, the first lens L1 is set as a concave-convex spherical lens, the second lens L2 is set as a plano-convex spherical lens, and the beam expander collimating device is an afocal device. The first lens L1 and the second lens L2 form a Galilean-type telescopic system, so the situation t...

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Abstract

The invention relates to a small infrared laser beam expanding and collimating device, which belongs to the field of laser beam expanding and collimating. The device comprises a first lens and a second lens which are sequentially arranged along the infrared laser transmission direction, the first lens and the second lens are arranged along the same optical axis, the first lens is a concave-convexspherical lens, the second lens is a plano-convex spherical lens, and the beam expanding and collimating device is an afocal device; and the focal power phi 1 of the first lens is less than 0. Compared with the prior art, the infrared laser beam expanding and collimating device has the effect of being more miniaturized.

Description

technical field [0001] The present application relates to the field of laser beam expansion, in particular to a small-sized infrared laser beam expansion and collimation device. Background technique [0002] The traditional laser beam expander system is usually divided into Galileo telescope laser beam expander system and Kepler telescope laser beam expander system. Among them, the Galileo telescope type is combined with a negative lens and a positive lens, and the Kepler telescope type is combined with two positive lenses. Since the laser beam expander system is mainly used in laser processing technology, and in order to increase the power of the received light source, the internal afocal Galileo telescope laser beam expander system is used as the basic selection. In the laser beam expander, it is not only necessary to complete the beam expansion of the corresponding magnification, but also to ensure the beam quality of the outgoing light. [0003] In the field of practic...

Claims

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Application Information

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IPC IPC(8): G02B27/09G02B27/30
CPCG02B27/0927G02B27/0955G02B27/30
Inventor 于海波
Owner 北京卓镭激光技术有限公司
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