Patent ID: 8845111
Filing Date: 2014-09-30
Classification: G03B

Abstract:
1. A lens shifting device, comprising: a first plate through which projected video light passes; a second plate connected to the first plate via an elastic member and having a projection lens attached to a position into which the projected video light that passed through the first plate enters; a slider disposed in the second plate and housed in the first plate to be movable in a predetermined direction intersecting a video optical axis where the projected video light advances; and a guide shaft attached to the first plate in a state of being engaged with the slider to move the second plate according to rotation, wherein the elastic member is disposed between the first plate and the second plate to connect the first plate and the second plate in a state of generating an elastic contraction force, and wherein the lens shifting device further comprises: a guide pin disposed in the second plate to project toward the first plate; and a guide slit formed in the first plate to be long and thin in the predetermined direction, through which the guide pin is inserted when the first plate and the second plate are connected.