Patent ID: 7379171

Claim:
An optical object distance simulation device, comprising: a control unit comprising: a first casing; a light-emitting element disposed in the first casing; and a heat-dissipating element disposed in the first casing or on the first casing for dissipating heat from the light-emitting element; an object distance simulation unit comprising: a second casing; a base seat disposed in the second casing; a motor disposed in the second casing and slidably disposed on the base seat; a turret disposed in the second casing and pivoted on an axle of the motor, wherein the turret has a plurality of charts; and an optical lens module disposed on the second casing for selectively corresponding to any one of the charts; and a light-guiding unit having one side disposed beside one side of the light-emitting element, and another side disposed beside one of the charts, for guiding and projecting light beams from the light-emitting element to one of the charts; whereby, the optical lens module is used to simulate a real object distance for reducing an object distance between a lens and any one of the charts.