| 摘要 |
An optical projection device and polarizing light source module are provided. The polarizing light source module includes a light source, a reflector and an optical sheet with a polarization splitting portion and a polarization conversion reflection portion. The light source provides an un-polarized light. The reflector with a reflection curved surface covers the light source with the optical sheet. A first polarized light passes through the polarization splitting portion and a second polarized light is reflected by that and passes to the reflection curved surface, then the second polarized light is reflected by the reflection curved and passes to the polarization conversion reflection portion. The second polarized light is converted to the first polarized light by the polarization conversion reflection portion, and the first polarized light reflected by the polarization conversion reflection portion is reflected by the reflection curved surface and penetrates through the polarization splitting portion.
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