CPC G03B 21/142 (2013.01) [G02B 13/16 (2013.01)] | 10 Claims |
1. A lens module adapted for a projection device, the lens module comprising:
a first base having at least one first rib structure and at least one second rib structurez wherein the at least one first rib structure extends along a direction parallel to a second axis, the at least one second rib structure extends along a direction parallel to a first axis, and the first axis is perpendicular to the second axis, wherein the first base has at least one first expanded hole;
a lens assembly assembled on the first base;
a second base stacked on the first base, wherein the second base has at least one second expanded hole;
a first adjustment member disposed on the second base and movably engaged with the at least one first rib structure to drive the first base to move along the first axis;
a second adjustment member disposed on the second base and movably engaged with the at least one second rib structure to drive the first base to move along the second axis; and
at least one locking member disposed through the at least one first expanded hole and the at least one second expanded hole corresponding to each other, wherein the first base bears movably against the second base, and an expansion axial direction of the at least one first expanded hole is perpendicular to an expansion axial direction of the at least one second expanded hole,
wherein when the first base moves along the first axis, the second adjustment member avoids the at least one second rib structure, and when the first base moves along the second axis, the first adjustment member avoids the at least one first rib structure.
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