Patent ID: 8591036

Claim:
A projector apparatus, utilizing wedge-type lens, for projecting an image onto a surface, comprising: a light source module for generating a first light path; an illumination lens set for inputting the first light path and outputting a second light path; a reflection-type image generator for generating said image; a prism set for inputting said second light path and projecting the second light path onto the reflection-type image generator, wherein the reflection-type image generator forms a third light path carrying said image after reflecting the second light path; and an image projection lens set disposed on the third light path for projecting said image onto the surface; wherein the illumination lens set comprises a wedge-type lens cooperating with the prism set for providing a suitable angle of incidence and angle of emission with respect to the reflection-type image generator, and minimizes the angle of emission; wherein said wedge-type lens defines a light inputting plane, a light outputting plane, a length direction, a width direction, a thickness direction, and a central axis of the length direction, wherein thickness of the wedge-type lens at a first terminal edge thereof is larger than thickness of the wedge-type lens at a second terminal edge thereof.