Projection Light Integration Rod Adjustment Mechanism
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Solution Overview
Problem
Conventional projection devices often experience poor light utilization efficiency due to light spots failing to focus on the active area of the light valve, resulting from different reflection optical paths and manufacturing tolerances, leading to edge divergence and reduced efficiency.
Innovation Solution
An adjustment mechanism comprising an outer cylinder member, an inner cylinder member, and a first adjustment member, which allows the light integration rod to be moved back and forth to focus the light spot on the active area, and a second adjustment member for rotating the light integration rod to ensure complete coverage, enhancing light utilization efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the light spot is allowed to diverge at the edge due to manufacturing tolerances and reflection optical path variations, then the device complexity is reduced, but the light utilization efficiency deteriorates
Solution Approach 1:
The patent implements dynamic adjustability by allowing the light integration rod to be positioned and oriented differently through the adjustment mechanism. The rod can be moved along the optical axis and rotated around it, enabling the system to adapt to manufacturing tolerances and optimize light spot focus on the light valve active area, thereby improving light utilization efficiency without requiring overly complex precision manufacturing
Solution Approach 2:
The patent changes the positional parameters (distance from light valve, angular orientation) of the light integration rod to optimize the light spot distribution. By adjusting these parameters, the system can compensate for manufacturing variations and ensure the light spot focuses correctly on the light valve active area, improving energy utilization
2Device complexity
If the light integration rod position is fixed without adjustment capability, then the device complexity is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The patent replaces static fixed positioning with dynamic adjustable positioning. The light integration rod can be adjusted along the optical axis and rotated, allowing the system to achieve precise light spot focus on the light valve active area without requiring extremely tight manufacturing tolerances. This dynamic capability compensates for assembly variations and mold tolerances
Solution Approach 2:
The patent incorporates preliminary adjustment capabilities during the assembly process, allowing the light integration rod position and orientation to be optimized before final assembly. This preliminary action ensures that the light spot will focus correctly on the light valve active area, reducing the need for post-assembly adjustments and field repairs
Data Source
AI summary
An adjustment mechanism configured to fix and adjust a light integration rod including an outer cylinder member, an inner cylinder member and a first adjustment member. The outer cylinder member has a first open end, a second open end and a cylinder wall, wherein the cylinder wall has a first opening and a first locking portion protruding outward. The inner cylinder member is configured to accommodate the light integration rod. The inner cylinder member is disposed in the outer cylinder member, a first outer surface of the inner cylinder member has a first protruding portion, wherein the first protruding portion passes through the first opening and protrudes from the outer cylinder member, and is opposite to the first locking portion. The first adjustment member is connected to the first locking portion and the first protruding portion, and configured to move the inner cylinder member back and forth.