LIGHT SOURCE, LIGHT COMBINING DEVICE, AND PROJECTION DEVICE WITH THE LIGHT SOURCE

摘要

A light source comprises a light combining device for guiding incident light from a first light emitting source (310) and incident light from a second light emitting source (340) with different incident directions to combine two paths of incident light into one path of emission light emitted from a first optical path. The light combining device comprises a guide part (330), for guiding light from the second light emitting source (340) to converge into the first optical path, and hindering a part of light from the first light emitting source (310) from entering the first optical path, the luminous flux of the hindered part of the light being less than the luminous flux of light from the first light emitting source (310) entering the first optical path. This light source can effectively reduce the cost and achieve a better heat dissipation effect and is especially suitable for a projection device

主权项

1. A light source, comprising a first light emitting source, a second light emitting source, and a light combining device for combining lights from the first light emitting source and the second light emitting source as an output light along in a first light path, wherein:
the light combining device comprises a light guiding part for guiding a light from the second light emitting source into the first light path; the light guiding part also preventing a part of a light from the first light emitting source from entering the first light path, and a luminous flux of the prevented part of light is less than a luminous flux of the light from the first light emitting source that enters the first light path through the light combining device.