Optical device, projector, and imaging apparatus

An optical device comprising:

• a first reflective surface having a power;
• a second reflective surface disposed on a magnification side of the first reflective surface and having a power;
• a first optical element disposed on a magnification side of the second reflective surface, the first optical element having a first transmissive surface, a third reflective surface having a concave shape and having a power, and a second transmissive surface different from the first transmissive surface, which are disposed in order from a reduction side to the magnification side;
• and
• at least one light-absorbing member among a first light-absorbing member disposed outside an effective light ray passage region on the second reflective surface and a second light-absorbing member disposed outside an effective light ray passage region on the first reflective surface, wherein
• the at least one light-absorbing member has an inclined surface inclined toward an outer side of a corresponding reflective surface as a distance from the corresponding reflective surface increases.