REFLECTOR, LIGHT SOURCE DEVICE, AND PROJECTION TYPE DISPLAY UNIT

摘要

A concave mirror substrate (1) constituting a reflector is formed of a large-thermal-conductivity base material such aluminum. An infrared heat conversion layer (2) is film-formed by anodic-oxidizing the base material such as aluminum to absorb a light in a wavelength region passing through a visible light reflection layer (4) and convert it into heat. A gloss buffer layer (3) is film-formed by firing at high temperatures Si-based resin or polyimide-based resin to the inner side (surface on a light source side) of the infrared heat conversion layer (2) to thereby buffer the infrared heat conversion layer (2) and the visible light reflection layer (4) so that the both do not touch directly, reduce the effect of unevenness produced in the infrared heat conversion layer (2), and smooth the surface on the light source side of the visible light reflection layer (4). Accordingly, light converted into heat is efficiently dissipated, stress/strain caused by differences in thermal coefficient among respective portions are eased to control performance deterioration, and costs, size and weight can be reduced.