Double-piece aspheric mirror ZOOM optical system

An optical system and aspheric mirror technology, which is applied in the field of double-piece aspheric mirror ZOOM optical system, can solve the problems of increased difficulty in processing and coating, high overall price, and increased risk of use, so as to achieve low processing difficulty and image elimination Poor effect, good effect, small amount of effect

Inactive Publication Date: 2020-10-02
SHANGHAI EMPOWER AUTOMATION TECH CO LTD
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  • Application Information

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Problems solved by technology

In foreign countries, the lens of the high-power continuous zoom beam expander system usually adopts an aspheric lens solution. The more common ones such as Precitec, HighYAG, etc. are 4-piece aspheric lens systems. There are also 3-piece aspheric lens solutions in China, and the overall price is very expen...

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  • Double-piece aspheric mirror ZOOM optical system
  • Double-piece aspheric mirror ZOOM optical system
  • Double-piece aspheric mirror ZOOM optical system

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "another end" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that ...

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Abstract

The invention discloses a double-piece aspheric mirror ZOOM optical system which comprises an aspheric positive meniscus mirror, an aspheric biconvex mirror and a protective mirror. The system is novel in structural design, and a full aspheric mirror optical system is adopted. Based on the advantages of few aspheric mirrors and good aberration elimination effect, based on the zoom characteristic of a zoom lens to a focusing light spot and the focusing characteristic of a focusing compensation lens to a focusing point, based on aberration-eliminating diffraction limit image quality under a large numerical aperture and based on the relation between the coating damage threshold value and the mirror surface light spot size and reduction of the thermal lens effect, continuous adjustment of thefocusing light spot size, the divergence angle size and the focus position is achieved through position matching adjustment of the focusing compensation mirror and the zoom lens. The system is suitable for high-power optical fiber laser cutting application, and is particularly compatible with the cutting speed and quality of thin, medium and thick plates.

Description

technical field [0001] The invention relates to the technical field of high-power fiber laser cutting, in particular to a ZOOM optical system of double-piece aspheric mirrors. Background technique [0002] Laser processing technology covers various laser processing technologies such as laser cutting, welding, quenching, drilling, micromachining, etc., and utilizes the basic characteristics of the interaction between laser and matter. Due to the advantages of non-contact between laser beam and processing materials, processing speed and quality, laser processing technology is an irreplaceable high-tech. [0003] At present, laser cutting occupies the main position of the entire laser processing industry, among which fiber output laser cutting is the most important. Fiber output lasers include fiber lasers and semiconductor fiber-coupled lasers. Due to the flexibility of fibers and good coupling output to near-infrared beams, the market share of fiber output lasers has become ...

Claims

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Application Information

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IPC IPC(8): G02B19/00G02B7/04G02B27/09B23K26/38B23K26/064B23K26/046
CPCB23K26/046B23K26/0648B23K26/38B23K26/064G02B7/04G02B19/0014G02B27/0927G02B27/0955
Inventor 邵华江李思佳
Owner SHANGHAI EMPOWER AUTOMATION TECH CO LTD
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