Parallel light tube with adjustable working and simulation distance

The utility model discloses a collimator with adjustable working and simulation distances, which is characterized by comprising a test box body, a lens module arranged in the test box body, a motion module, a chart plate and a light source for illuminating the chart plate, and a shooting module can shoot an image on the chart plate through the lens module. The lens module comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are arranged along the optical axis, and the chart plate and the light source are driven by the motion module to linearly move along the optical axis. According to the utility model, by changing the distance between the chart plate and the lens module, the actual shooting effect of the shooting module is restored, the test space is small, a tester does not need to move the chart card, the labor intensity is greatly reduced, and the test efficiency is improved. 本实用新型公开了一种工作及模拟距离可调式平行光管，其特征在于：包括测试箱体，设置于测试箱体内的镜头模组、运动模组、chart板及给chart板照明的光源，拍摄模