Patent ID: 7295225

Claim:
A light source unit for emanating light beams, comprising: a plurality of light sources; a plurality of coupling lenses each corresponding to a light source of said plurality of light sources; a coupling lens holding unit having a first and a second holding faces aligned approximately in parallel to an optical axis of a first coupling lens of said plurality of coupling lenses; an elastically pressing member pressing a side portion of said first coupling lens against said first and said second holding faces so as to thereby hold said first coupling lens; a light source holding unit holding a first light source of the plurality of light sources corresponding to said first coupling lens; and a fixing member fixing said light source holding unit, wherein said fixing member fixes a position of said first light source displaceable over a plane perpendicular to said optical axis of said first coupling lens, and wherein at least one of said first coupling lens and said holding face is provided with a lubricating means at a location in contact there between.