Galilean beam expansion lens device

A beam expander and positive lens technology, applied in the field of lasers, can solve the problems of the total axial length and the inability to meet the application requirements of miniaturization of biomedical testing equipment, and achieve the effects of miniaturization, simple structure and strong practicability.

Pending Publication Date: 2019-05-10
无锡厦泰生物科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For biomedical inspection applications, the overall axial length of these common Galilean beam expanders is still long, which cannot meet the market's application requirements for miniaturization of biomedical inspection equipment

Method used

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Embodiment Construction

[0037] The technical solutions of the present invention are described in detail below in conjunction with the embodiments. The present invention discloses a Galilean beam expander device, which includes two parts, a main body assembly and a positive lens assembly.

[0038] The positive lens assembly includes a convex lens 1 , an adjustment ring 2 and an adjustment bracket 3 ; the main assembly includes a concave lens 4 , a mount 5 and a positioning pin 6 at the bottom.

[0039] Such as figure 1 , 2 Shown in and 3, in the technical solution of the present invention, the convex lens 1 and the concave lens 4 jointly constitute a Galilean beam expander, and the convex lens 1 is a plano-convex mirror, or a convex-convex mirror or a cemented convex lens, and its focal length is Fp; the concave lens 2 is a plano-concave mirror, or concave-concave mirror or cemented concave lens, its focal length is -Fn; the relationship between Fp and Fn is as follows:

[0040] 1

[0041]...

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Abstract

The invention discloses a Galilean beam expansion lens device. A positive lens component and a main body component are provided, wherein the positive lens component comprises a convex lens, an adjusting ring and an adjusting bracket, the main body component comprises a concave lens, a mounting base and a locating pin; a concave lens in the positive lens component is arranged in a ring circle of the adjusting ring, the adjusting bracket is an axially symmetrical boss body, a hunching boss center is provided with a vertical cutting slot, and a central position of the adjusting bracket body at the lower part of the vertical cutting slot is provided with a penetration hole for mounting the adjusting ring; frame bodies at left and right sides of the penetration hole are symmetrically provided with a group of fixed through holes used for connecting the adjusting bracket and the main body component; a base body of the mounting base is provided with the through hole concentrically corresponding to the through hole on the adjusting bracket and one group of the fixed through holes, and one group of threaded holes, and the concave lens is mounted in a through hole B on the base body at one side far away from the adjusting bracket; the adjusting bracket is in screw joint with the threaded hole on the mounting base through a group of screw rods arranged in the fixed through holes in stringform, and thus, an adjustable Galilean beam expansion lens framework with overall axial length of 40-60mm is formed.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a Galilean beam expander. Background technique [0002] With the development of the photoelectric industry, laser technology is more and more widely used in the field of medical testing, such as DNA sequencing, flow cytometry and so on. In the application, the laser emits a laser beam, passes through the beam shaping module in the instrument, and the shaped laser beam enters the sample to be tested through the focusing lens. Beam expansion of the laser beam is a very important and common application requirement in these beam shaping modules. [0003] Generally speaking, beam expanders are generally divided into Keplerian beam expanders and Galilean beam expanders. The Kepler beam expander is generally composed of two convex lenses. The total axial length is approximately determined by the addition of the focal lengths of the two convex lenses, so the total axial length is relati...

Claims

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Application Information

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IPC IPC(8): G02B27/09G02B7/02
Inventor 翟苏亚倪晓飞
Owner 无锡厦泰生物科技有限公司
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