Stepless zoom lens group linkage adjusting mechanism for picosecond laser treatment head

By using a continuously variable zoom lens group linkage adjustment mechanism, the problem of uneven energy distribution in existing picosecond laser treatment equipment under mechanical tolerance and off-center load interference is solved. This achieves low-cost, high-precision lens group displacement control, extends lens life, and maintains the uniformity of spot energy.

CN122449770APending Publication Date: 2026-07-24MEDICI (SHANDONG) MEDICAL DEVICES CO LTD
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Patent Information

Application Number
CN202610646633.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-12
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

The zoom mechanism of existing picosecond laser treatment equipment has difficulty accurately maintaining a flat-topped cap-shaped energy distribution under mechanical tolerance and push-pull off-center load interference, and the high-precision guide rail leads to high equipment cost and shortened lens life.

Method used

The stepless zoom lens group linkage adjustment mechanism includes a handpiece housing, a zoom cam cylinder, an optomechanical decoupling and isolation assembly, and elastic misaligned double half pins. The zoom cam cylinder drives the elastic misaligned double half pins to slide in a linear guide groove. The energy storage element and the micro-flexible curved groove absorb external interference, thereby achieving smooth displacement and uniform energy distribution of the lens group.

Benefits of technology

It reduced equipment costs, improved zoom accuracy and lens lifespan, ensured the uniformity of the flat-topped cap-shaped energy distribution of the picosecond laser, and reduced the impact of mechanical interference on the lens.

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Abstract

The invention discloses a stepless zoom lens group linkage adjusting mechanism for a picosecond laser treatment head, and relates to the technical field of medical instruments. The hand tool comprises a hand tool shell, wherein a linear guide groove is formed in the hand tool shell; the zoom cam cylinder is sleeved in the hand tool shell and is provided with a zoom cam groove; the optical-mechanical decoupling isolation assembly is arranged on the outer side of the linear guide groove and is in sliding fit with the linear guide groove; the elastic staggered double-half pin is connected to the outer side wall formed by the optical-mechanical decoupling isolation assembly, the free end of the elastic staggered double-half pin extends out and abuts against the interior of the zoom cam groove, an energy storage element is installed in the elastic staggered double-half pin, and the energy storage element abuts against the inner walls of the two sides of the attaching groove of the elastic staggered double-half pin. The transmission return difference gap is eliminated through the energy storage element, unbalance loading torsion is absorbed through the optical-mechanical decoupling isolation assembly, the lens is prevented from inclining and deflecting, and the zooming smoothness and the uniformity of light spot energy distribution are improved.
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