Patent ID: 7588348

Claim:
A lamp device, comprising: a reflection mirror having a concave reflection surface and a cylinder provided centrally of the reflection mirror; and an arc tube including: a bulb positioned on a side of the reflection mirror corresponding to the concave reflection surface, electrodes incorporated in the bulb, and a pair of encapsulations formed continuously from the bulb and supporting the bulb, one encapsulation of the pair of encapsulations being inserted in the cylinder and being secured directly to the cylinder by a light-shielding adhesive inserted between the cylinder and the one encapsulation, the bulb being supported only by the light-shielding adhesive and the one encapsulation in the cylinder, the one encapsulation having an outer periphery that opposes inner surfaces of the cylinder, the outer periphery being covered with the light-shielding adhesive and including an end face and opposing side surfaces of the one encapsulation, the light-shielding adhesive having a surface coated with a heat-resistive paint having a viscosity lower than the light-shielding adhesive.