Optical lens
An optical lens and lens technology, applied in the field of optics, can solve the problems of small marking area and small aperture, which affect the accuracy and efficiency of laser processing, and achieve the goal of reducing the length of the lens, increasing the processing range, and facilitating laser processing Effect
Active Publication Date: 2017-01-11
HANS LASER TECH IND GRP CO LTD
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Problems solved by technology
[0005] The purpose of the present invention is to provide an optical lens, which solves the problems of small light aperture and small marking area of the existing lens while controlling the overall length of the lens, which further affects the accuracy and efficiency of laser processing
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[0022] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of the assoc...
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Abstract
The invention relates to an optical lens which comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged coaxially along the incident light transmission direction. The first lens is a flat concave negative lens, the second lens is a crescent positive lens, the third lens is a crescent negative lens, the fourth lens is a crescent positive lens, and the fifth lens is a double-convex positive lens. Two curved surfaces of each lens are a light incident face and a light exit face of the lens, a first curved surface, a second curved surface, a third curved surface, a fourth curved surface, a fifth curved surface, a sixth curved surface, a seventh curved surface, an eighth curved surface, a ninth curved surface and a tenth curved surface are sequentially distributed in the incident light transmission direction, the first curved surface, the third curved surface, the fourth curved surface, the fifth curved surface, the sixth curved surface, the seventh curved surface, the eighth curved surface and the tenth curved surface all protrude towards the incident light transmission direction, and the ninth curved surface protrudes towards the incident light. The entrance pupil diameter and the focal length of the optical lens are larger than a traditional laser machining focus lens, machining accuracy and machining speed are improved favorably, the machining range is increased, laser machining of large-format workpieces is facilitated, and machining efficiency is effectively improved.
Description
technical field [0001] The invention relates to the field of optical technology, in particular to an optical lens. Background technique [0002] With the continuous development of laser processing technology, the scope of its application is also increasing. Due to the limitations of the optical system design, the traditional laser processing technology has a relatively limited range of laser marking. When large-format marking is required, it has to be marked separately and then combined, and sometimes even the laser marking can only be given up. method and adopt other more time-consuming and labor-intensive methods. Therefore, the marking range is an important factor affecting the marking efficiency. [0003] Marking range A=(f·tgω) 2 , the marking range is related to the focal length f and field angle ω of the optical system. When f is the same, A and (tgω) 2 It is directly proportional, so the field usually adopts the method of increasing the field of view to expand t...
Claims
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IPC IPC(8): G02B13/00B23K26/064
Inventor 施宏艳周朝明彭金明高云峰
Owner HANS LASER TECH IND GRP CO LTD