Rotating Mirror Assembly for High-Speed Light Beam Parallel Shift
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Solution Overview
Problem
Conventional light beam parallel shift mechanisms face challenges with high inertia in rotation, making high-speed adjustments difficult, and synchronization issues with synchronized mirror rotation mechanisms lead to inconsistent exit light angles.
Innovation Solution
An optical apparatus featuring a rotatable reflecting member with a first and second reflecting surface, an optical system that sequentially reflects light to adjust the optical path, and an adjusting device to control the rotation angle, allowing for high-speed light beam parallel shift by using a galvanomotor and a configuration with multiple mirrors to maintain consistent exit angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a transparent member is rotated to parallelly shift the light beam, then the light beam can be shifted, but the inertia becomes large making high-speed adjustment difficult
Solution Approach 1:
The patent divides the single large transparent member into multiple smaller reflecting members (first reflecting member and second reflecting member). Each member has reduced size and inertia, allowing faster rotation. The segmented members work together through an optical system to achieve the same light beam shifting function as the original single member.
Solution Approach 2:
The patent replaces the direct mechanical rotation of a large transparent member with a system of multiple smaller reflecting members that can be rotated more easily. The optical system (including additional mirrors) substitutes for the mechanical advantage that would be needed to rotate the larger single member at high speed.
2Manufacturing precision
If two synchronized angle changing mirrors are used to shift the light beam, then the inertia problem is solved, but accurate synchronization becomes difficult leading to inconsistent exit light angles
Solution Approach 1:
The patent merges the functions of multiple reflecting members into a single integrated optical system. The first and second reflecting members, along with the optical system mirrors, work as a unified mechanism where the light beam passes through multiple reflections to achieve the desired parallel shift with consistent exit angles.
Solution Approach 2:
The optical system acts as an intermediary between the reflecting members and the light beam. It includes additional mirrors that guide and control the light path, ensuring that the exit light beam maintains a constant angle regardless of the specific rotation positions of the individual reflecting members.
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 solution enables high-speed and precise light beam parallel shift with reduced inertia and consistent exit angles, improving the speed and accuracy of optical path adjustments compared to conventional methods.
Implementation Method 1
a rotatable reflecting member including a first reflecting surface and a second reflecting surface, an optical system configured to sequentially reflect, by a plurality of reflecting surfaces included therein, light reflected by the first reflecting surface and cause the light to be incident on the second reflecting surface
Data Source
AI summary
An optical apparatus is provided. The apparatus comprises a rotatable reflecting member including a first reflecting surface and a second reflecting surface, an optical system configured to sequentially reflect, by a plurality of reflecting surfaces included therein, light reflected by the first reflecting surface and cause the light to be incident on the second reflecting surface, and an adjusting device configured to change a rotation angle of the reflecting member to adjust an optical path of light that is reflected by the second reflecting surface and exits the second reflecting surface.