Rotary Laser Scanner With Angled Glasses for Uniform Machining
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Solution Overview
Problem
Existing laser scanners used in ablation processes often result in a significant thermal effect due to repeated irradiation of the same area with laser beams, leading to inefficient and non-uniform machining processes like cutting.
Innovation Solution
A laser scanner configuration featuring a rotary member with light-transmitting glasses arranged to form a polygon, allowing the laser beam to be scanned in two directions with different inclination angles, which disperses the beam and reduces thermal effects by minimizing overlapping irradiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a laser beam is scanned in one direction only, then the scanning mechanism is simple, but the same portion is irradiated repeatedly causing thermal effects
Solution Approach 1:
The patent introduces a second scanning dimension by arranging multiple light-transmitting members with different inclination angles. The laser beam is now scanned not only in the primary direction but also in the direction parallel to the rotation axis, transforming a one-dimensional scanning problem into a two-dimensional solution. This dimensional expansion allows the laser beam to cover a broader area and reduces repeated irradiation of the same portion, thereby mitigating thermal effects.
2Object-affected harmful factors
If multiple light-transmitting members with different inclination angles are used, then thermal effect is reduced, but the device structure becomes more complex
Solution Approach 1:
The patent divides the light-transmitting function into multiple discrete members, each with a specific inclination angle. Instead of using a single complex light-transmitting element, the system segments the function across several simpler components arranged in a polygonal configuration. This segmentation allows for easier manufacturing and adjustment of individual members while achieving the overall goal of multi-directional scanning and thermal effect reduction.
3Manufacturing precision
If the laser beam diameter is effectively increased through scanning, then machining uniformity improves, but the scanning system complexity increases
Solution Approach 1:
The patent employs a dynamic scanning approach where the light-transmitting members rotate about a rotation axis. This dynamic motion transforms a static, complex multi-element system into a dynamic system where simpler components achieve sophisticated scanning patterns through motion. The rotation enables the laser beam to effectively cover a larger area and improve machining uniformity without requiring a permanently complex structural arrangement.
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
This configuration enables efficient and uniform machining processes by reducing thermal effects, preventing overheating and improving the precision of cutting and other operations.
Implementation Method 1
The light-transmitting members are disposed on the rotary member... Given that an angle formed between the inner surface of each light-transmitting member and a straight line parallel to the rotation axis is defined as an inclination angle, the inclination angles of at least two of the light-transmitting members have different values
Data Source
AI summary
A laser scanner includes a rotary member, light-transmitting glasses, and a mirror. The rotary member rotates about a rotation axis. The light-transmitting glasses are disposed on the rotary member. The mirror guides a laser beam such that the laser beam is incident on the light-transmitting glass. When the rotary member is viewed in a direction parallel to the rotation axis, a polygon is formed by connecting inner surfaces of the light-transmitting glasses. Given that the angle formed between the inner surface of each light-transmitting glass and a straight line parallel to the rotation axis is defined as an inclination angle, the inclination angles of at least two of the light-transmitting glasses have different values.