Patent ID: 7055970
Filing Date: 2006-06-06
Classification: G02B,G03B,H04N

Abstract:
1. An optical apparatus, comprising: an electric optical device having a light modulating device that modulates a plurality of colored lights according to image information and a color combining system that combines colored lights modulated by the respective color modulating devices; a projection system that projects a luminous flux combined by the color combining system of the electric optical device in an enlarged manner and forms a projecting image; a base member having the electric optical device fixed thereon and the projection system mounted thereon; the projection system including a lens stored therein and a lens barrel having a flange extending outwardly and substantially orthogonal to the direction of the optical axis of the lens; the base member including a supporting portion extending along the flange of the lens barrel of the projection system and supporting the flange; one of the flange and the supporting portion being formed with a hole for inserting a screwing shaft of a screwing member that fixes the flange and the supporting portion and having a diameter larger than the diameter of the screwing shaft; one of the flange and the supporting portion being formed with a pierced portion penetrated from the surface opposing to the other one of the flange and the supporting portion to the surface on the opposite side and the other one of the flange and the supporting portion being formed with a groove which communicates with the pierced portion; and a rod-shaped adjusting member that is inserted into the pierced portion and the groove, the adjusting member coming into abutment with the pierced portion or the groove formed at least on the flange, and the flange sliding on the supporting portion.