| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a projector for emitting predetermined color light using a phosphor, improved in light utilization efficiency.SOLUTION: A phosphor 42 is irradiated with a blue light B laser beam to emit green light G as diffusion light. A dichroic mirror 3 transmits the blue light B therethrough and reflects the green light G. A collimator lens 5 converts the green light G into parallel light. A planar mirror 11 returns light at an end of the green light G from the phosphor 42 to the dichroic mirror 3 to be reflected therefrom and causes the light to enter the phosphor 42.</p> |
