Light source unit and projector
AssigneeCasio Computer Co., Ltd.
InventorOsamu Umamine
Life of this patent
Estimating the term…
Abstract
A light source unit includes a first light source configured to emit light in a first wavelength range, a second light source configured to emit light in a first wavelength range, a first dichroic mirror configured to reflect the light in the second wavelength range incident thereon at a first incident angle and transmit the light in the second wavelength range incident thereon at a second incident angle, which is different from the first incident angle, and a second dichroic mirror configured to reflect the light in the second wavelength range that has passed through the first dichroic mirror, wherein after having been reflected by the second dichroic mirror, the light in the second wavelength range is incident on the first dichroic mirror at the first incident angle to then be reflected by the first dichroic mirror.
Claims16
A light source unit comprising:
- a first light source configured to emit light in a first wavelength range;
- a second light source configured to emit light in a second wavelength range;
- a first dichroic mirror configured to reflect the light in the first wavelength range incident thereon at a first incident angle and transmit the light in the second wavelength range incident thereon at a second incident angle;
- and
- a second dichroic mirror configured to reflect the light in the second wavelength range that has passed through the first dichroic mirror, wherein
- after having been reflected by the second dichroic mirror, the light in the second wavelength range is incident on the first dichroic mirror to then be reflected by the first dichroic mirror.
A light source unit comprising:
- a first light source configured to emit light in a first wavelength range;
- a second light source configured to emit light in a second wavelength range;
- a first dichroic mirror configured to reflect the light in the first wavelength range incident thereon at a first incident angle and transmit the light in the second wavelength range incident thereon at a second incident angle;
- and
- a half-wave plate provided between either of the first light source or the second light source and the first dichroic mirror, wherein
- a polarization direction of the light in the first wavelength range and a polarization direction of the light in the second wavelength range are at right angles to each other with respect to the first dichroic mirror.
Dependencies are inferred from the claim text.