Patent ID: 6944375

Claim:
An optical element, comprising: a first optical waveguide having a first incidence plane on which first color light is incident and an emergence plane opposed to the first incidence plane; a second optical waveguide having a second incidence plane on which second color light is incident; a third optical waveguide having a third incidence plane on which third color light is incident, the second optical waveguide and the third optical waveguide being joined to the first optical waveguide; a first dichroic filter formed on a joint plane between the first optical waveguide and the second optical waveguide to reflect the first color light and the third color light and transmitting the second color light; and a second dichroic filter formed on a joint plane between the first optical waveguide and the third optical waveguide to reflect the first color light and the second color light and transmitting the third color light; the three color light being emerged from the emergence plane of the first optical waveguide.