Rotating Light Reflector Geometry for Distortion-Free Optical Scanning
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Solution Overview
Problem
Existing light reflection devices in laser processing and scanning technologies suffer from scanning distortion due to fluctuations in the reflection position of light, which reduces the processable range of the irradiated object and requires reciprocating motion mechanisms that narrow the scanning area.
Innovation Solution
A light reflection device with a reflection member that performs simultaneous rotation and revolution, where the angular velocity of the revolution is twice that of the rotation, maintaining a constant reflection position and preventing distortion by using a configuration of regular polygon pyramids with matched phases and inclined reflection surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a reciprocating motion mechanism is used to suppress reflection position fluctuation, then the stability of light reflection position is improved, but the scanning area is reduced and the device complexity increases
Solution Approach 1:
The invention transforms the static reciprocating motion mechanism into a dynamic continuous rotation system. The reflection member rotates continuously while maintaining a constant reflection position through precise geometric configuration, eliminating the need for reciprocating motion and thereby preserving the full scanning area without compromising reflection position stability.
Solution Approach 2:
The invention changes the operational parameters from reciprocating motion with acceleration and deceleration to continuous rotation at constant angular velocity. This parameter change eliminates the fluctuation in reflection position that occurs during acceleration and deceleration phases, while also maintaining a constant irradiation rate across the scanning area.
2Reliability
If a reciprocating motion mechanism is used to suppress reflection position fluctuation, then the stability of light reflection position is improved, but the device complexity increases
Solution Approach 1:
The invention extracts and eliminates the reciprocating motion mechanism from the system, replacing it with a simpler continuous rotation system. By removing the complex reciprocating components, the device complexity is reduced while the reflection position stability is maintained through the geometric configuration of the reflection member.
Solution Approach 2:
The invention substitutes the mechanical reciprocating motion system with a rotational system driven by a simple rotation drive unit. This substitution eliminates the need for complex reciprocating mechanisms while achieving the same goal of stable light reflection position through continuous rotation and precise geometric design.
3Productivity
If the reflection member rotates at constant angular velocity, then the productivity is improved, but the reflection position fluctuates causing scanning distortion
Solution Approach 1:
The invention changes the operational parameters from reciprocating motion with variable speed to continuous rotation at constant angular velocity. This parameter change enables high-speed scanning while maintaining constant irradiation rate and eliminating reflection position fluctuation through the geometric configuration of the reflection member.
Solution Approach 2:
The invention transforms the dynamic characteristics from reciprocating motion to continuous rotation. The reflection member rotates continuously at constant angular velocity, and through precise geometric configuration, maintains a constant reflection position, thereby achieving both high productivity and high scanning precision simultaneously.
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 solution prevents light reflection position fluctuations, allowing for stable scanning without reducing the processable range, combining the advantages of polygon mirrors and mirror galvanometers by maintaining a constant irradiation rate and resistance to reflection point fluctuations.
Implementation Method 1
a reflection member 42 having a reflection surface 85, 86 formed in a planar shape; The reflection member 42 performs a rotation and a revolution simultaneously
Data Source
AI summary
A light reflection device includes a reflection member having a reflection surface that is formed in a planar shape. The reflection surface reflects incident light. The reflection member performs a revolution and a rotation simultaneously. A direction of the revolution of the reflection member and a direction of the rotation of the reflection member are the same. Angular velocity of the revolution of the reflection member is equal to twice angular velocity of the rotation of the reflection member.