Optical device, image display apparatus, and method for manufacturing optical device

An optical device comprising:

• a light guide member that guides image light from a light incident portion on which the image light is incident to a light exiting portion from which the image light exits;
• and
• a second light absorption layer provided on a surface of the light guide member,
• wherein the light guide member has a reflection surface tilted to a surface of the light incident portion, and
• the second light absorption layer is disposed on the reflection surface.

A method for manufacturing an optical device that guides image light from a light incident portion on which the image light is incident to a light exiting portion from which the image light exits, the method comprising:

• forming a layered member between a first light transmissive base and a second light transmissive base, the layer member including
• a first light absorption layer that absorbs part of light incident thereon, and
• a first transflective layer that reflects at least part of the light reabsorbed by the first light absorption layer and transmits at least another part of the unabsorbed light;
• and
• cutting the layered member in a direction tilted to the direction in which the first transflective layer and the first light absorption layer extend.