The principle of measuring projector

Projector early called contour projection and optical projector, digital display part of the recent increase, so also known as digital projector or digital projector and measuring projector and projector, it is basically the same, but different structure. The projector to show the slides by light through optical devices, direct to the screen; the projector to horizontal projection, by the light through the optical devices into the plane mirror, the mirror to the screen imaging by optical finish. The light source is the bromine tungsten lamp and dysprosium lamp two. Condenser with organic glass Fresnel lens. A new moon mirror is added between the light source and the condenser, can strengthen the converging light, brightness enhancement. The plane mirror can light direction 90 °, vertical irradiation. Projector generally use 6 ~ transparencies of 8 inches, you can also directly on transparencies on writing, drawing, or demonstration projection teaching aid.