| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a gain of three or more in a luminous flux. SOLUTION: This device has a double prism DPC having an incident surface A1 for receiving a non-polarized beam F, polarized light splitter CF, HOE for transmitting the polarized light in a first polarizing direction and a polarized light in a second polarizing direction, and a double prism DPC similarly having a reflecting surface A3, and this double prism has a mirror M3 and an emitting surface A2. The mirror M3 receives the light reflected by the polarized light splitter CF, and the emitting surface A2 transmits the light transmitted by the polarized light splitter CF and reflected by the mirror M3.</p> |
