Aspherical Mirror Linear Laser Focusing
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Solution Overview
Problem
Conventional tissue resection devices using laser beams require multiple lenses, leading to increased size and energy loss, making it difficult to minimize device length and efficiently focus the laser beam in a linear pattern for precise surgical applications.
Innovation Solution
An aspherical mirror with a saddle-shaped structure having both convex and concave surfaces with predetermined curvature is used to focus and reflect the laser beam in a linear pattern, eliminating the need for spherical and cylindrical lenses, thereby minimizing the device size and preventing energy loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple lenses (spherical and cylindrical) are used to focus the laser beam in a linear pattern, then the laser beam can be focused precisely, but the device size increases and energy loss occurs
Solution Approach 1:
The patent combines the functions of multiple lenses (spherical and cylindrical) into a single aspherical mirror that can focus the laser beam in a linear pattern. This merging eliminates the need for separate optical components, reducing device size while maintaining focusing precision through the integrated aspherical surface design
Solution Approach 2:
The patent employs an aspherical mirror with a specific curved surface profile instead of traditional spherical or cylindrical lenses. The aspherical curvature is mathematically designed to focus the laser beam into a line, achieving precise focusing with a single component and eliminating energy loss associated with multiple lens interfaces
2Manufacturing precision
If multiple lenses are used to focus the laser beam, then the laser beam can be focused in a linear pattern, but energy loss occurs due to multiple interfaces
Solution Approach 1:
By merging multiple lens functions into a single aspherical mirror, the patent eliminates multiple optical interfaces where energy loss occurs. The single reflective surface maintains laser energy while achieving linear beam focusing through its specialized aspherical geometry
Solution Approach 2:
The patent replaces the mechanical lens system (refractive optics) with a reflective aspherical mirror system. This substitution eliminates energy loss associated with refraction at multiple lens interfaces, as reflection preserves laser energy more efficiently while still achieving the desired linear focusing effect
3Manufacturing precision
If conventional laser focusing components are used, then the laser beam can be focused, but the device length cannot be minimized to a few cm
Solution Approach 1:
The patent integrates the focusing function into a single compact aspherical mirror component, eliminating the need for multiple separated lenses and their associated mounting spaces. This integration enables the entire focusing system to be miniaturized to a length of a few centimeters while maintaining precise linear beam focusing capability
Solution Approach 2:
The aspherical mirror's curved surface is designed with specific radii of curvature that enable effective laser focusing within a compact form factor. The optimized curvature allows the mirror to achieve the required focusing precision in a much shorter optical path length compared to conventional lens systems
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The aspherical mirror enables the conversion of a laser beam into a line beam using a single mirror, reducing the overall size of the optical system, minimizing energy loss, and allowing for a joint structure that enhances accessibility and precision in surgical procedures, such as vascular resection and hemeostasis.
Implementation Method 1
a convex surface and concave surface, onto which a laser beam is reflected, are configured to have a predetermined curvature, thereby focusing a laser beam in a linear pattern
Data Source
AI summary
According to an embodiment of the present invention, there is provided an aspherical mirror for focusing a laser beam in a linear pattern, the aspherical mirror including: a convex surface diffusely reflecting an irradiated laser beam; and a concave surface reflecting the laser beam such that the laser beam is focused at one point, wherein the laser beam reflected from the convex surface forms a long line beam as an angle of reflection with respect to a curvature of the convex surface changes, and the laser beam reflected from the concave surface is focused at one point on the line beam as an angle of reflection with respect to a curvature of the concave surface changes.