| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a projector increasing the F-number of an illumination optical system, without enlarging the illumination optical system, etc. <P>SOLUTION: A coupling lens 43a cooperating with a superimposed lens 35 is provided only in a first section between a first dichroic mirror 41a and a reflecting mirror for red 42a being a bending mirror, in a first optical path OP1 from the superimposed lens 35 to a first liquid crystal display panel 61r. Thus, the F-number of the illumination optical system 30 for blue can be adjusted with a high degree of freedom and the increase in the number of lenses constituting a color separation light guide optical system 40 and the illumination optical system 30 can be prevented. Furthermore, illumination light can be prevented from entering with a large incident angle around the first liquid crystal display panel 61r and the telecentric properties of the illumination optical system 30 for blue can be secured. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
