Projector Lens Adjustment Mechanism with Same-Side Controls
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Solution Overview
Problem
Existing projector adjustment mechanisms require significant time and effort to adjust the light axis of optical members, and can become complicated when trying to adjust in both longitudinal and lateral directions simultaneously.
Innovation Solution
A projector design with a dual-adjustment mechanism where the first and second adjustment portions have their operation portions on the same side, allowing for simultaneous adjustment of the light axis in both directions without complicating the mechanism, utilizing a first member, a second member movable in the longitudinal direction, and a third member rotatable around a rotation center axis parallel to the light axis, with screw mechanisms for precise adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If adjustment portions for moving the condenser lens in the longitudinal direction and lateral direction are placed at the same side, then the adjustment tools may be used in the same direction and time and efforts for adjustment may be reduced, but the adjustment mechanism may easily become complicated
Solution Approach 1:
The adjustment mechanism employs a nested structure where the second member is attached to the first member, the third member is attached to the second member, and the optical member is held by the third member. This nesting allows multiple adjustment functions to be integrated in a compact arrangement where operation portions can be accessed from the same side while maintaining a relatively simple overall mechanism structure.
Solution Approach 2:
The mechanism transforms the adjustment approach by using rotational movement of the third member around a rotation center axis parallel to the light axis to achieve lateral displacement of the optical member. This dimensional transformation allows both longitudinal and lateral adjustments to be performed through operations accessible from the same side, reducing adjustment time without significantly increasing mechanism complexity.
2Ease of operation
If the condenser lens is moved in the longitudinal direction and lateral direction using separate adjustment mechanisms, then the lens position can be adjusted in both directions, but directions for using an adjustment tool may be different and time and efforts are needed for adjusting
Solution Approach 1:
The adjustment mechanism merges the longitudinal and lateral adjustment functions into an integrated system where both adjustment portions are accessible from the same side. The first adjustment portion moves the second member in the first direction (longitudinal), while the second adjustment portion rotates the third member to move the light axis in the second direction (lateral), allowing both adjustments to be performed using adjustment tools inserted from the same side, thereby improving ease of operation and reducing adjustment time.
Solution Approach 2:
The mechanism employs dynamic coupling where the rotation of the third member around the rotation center axis not only adjusts the lateral position but also works in conjunction with the longitudinal adjustment of the second member. This dynamic interaction between the adjustment portions allows for efficient coordinated adjustment of the optical member position in both directions from the same access side.
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 design reduces the time and effort required for adjusting the light axis while preventing the adjustment mechanism from becoming overly complex, allowing for precise light axis adjustments and improved light utilization efficiency in the projector's optical system.
Implementation Method 1
a first screw member extending in the first direction, penetrating through the first through hole, and screwed into the first screw hole
Implementation Method 2
a second screw member extending in the first direction, penetrating through the second through hole, and screwed into the second screw hole
Data Source
AI summary
A projector includes an adjustment mechanism adjusting a light axis of the optical member. The adjustment mechanism includes a first member, a second member attached to be movable in a first direction orthogonal to the light axis of the optical member with respect to the first member, a third member holding the optical member and attached to be rotatable around a rotation center axis parallel to the light axis with respect to the second member, a first adjustment portion moving the second member in the first direction with respect to the first member, and a second adjustment portion rotating the third member around the rotation center axis with respect to the second member, and an operation portion of the first adjustment portion and an operation portion of the second adjustment portion are placed at the same side.