Long focal depth laser beam homogenizing optical system based on aspheric mirror difference effect
An optical system, laser beam technology, applied in optics, optical components, instruments, etc., can solve the problems of inconsistent signal signal-to-noise ratio, uneven distribution of line spot, affecting measurement accuracy, etc., achieve uniform energy distribution, improve laser cleaning and efficiency. Laser polishing efficiency, easy processing effect
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[0020] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings, but are not limited thereto. Any modification or equivalent replacement of the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention shall be included in the present invention. within the scope of protection.
[0021] like figure 1 As shown, the optical system for homogenizing a laser beam with a long focal depth based on the aspheric mirror aberration effect provided by the present invention is composed of a beam homogenizing aspheric lens group and a spherical collimating lens group with a long focal depth, wherein:
[0022] The beam homogenizing aspheric lens group is composed of a negative meniscus convex lens 1, a first positive meniscus convex lens 2, a negative meniscus concave lens containing an aspheric surface 3, a negative refractive power double c...
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