Optical filter switcher

The invention discloses an optical filter switcher, which comprises a first optical filter, a second optical filter, a movable sheet and a shielding structure, The first optical filter and the secondoptical filter are arranged on the movable sheet side by side; The arrangement direction of the first optical filter and the second optical filter is perpendicular to the thickness direction of the first optical filter and the second optical filter, and a gap exists between the first optical filter and the second optical filter. The two sides of the first optical filter and the two sides of the second optical filter are a light inlet side and a light outlet side respectively in the thickness direction, and the shielding structure shields the gap and enables the gap not to have an area directlycommunicated with the light inlet side and the light outlet side in the thickness direction. The optical filter switcher provided by the embodiment of the invention can improve the problem of light spot pollution. 本申请公开了一种滤光片