Patent ID: 6704148
Filing Date: 2004-03-09
Classification: G02B,H04N

Abstract:
An omnidirectional visual angle system having an optical system, which includes a mirror having a surface of revolution for obtaining an omnidirectional image in a visual field region, and an image pickup device for picking up the image obtained by the optical system, comprising:a retainer, which retains therein the optical system and the image pickup device and has a waterproof structure and whose side surface has at least partially omnidirectional transparency; the retainer is comprised of a top section, a body section and a bottom section; a portion that belongs to the body section and is located at least within a sight range of the mirror having a surface of revolution is transparent, and a portion connecting the top section with the body section and a portion connecting the body section with the bottom section have a waterproof function and a detachable connection structure; wherein the body section has a cylindrical shape and includes a fixture portion of the mirror having a surface of revolution at an end of the top section; and the bottom section is assembled with a mounting base for movably mounting the image pickup device along a center axis of the body section and with a fixture for fixing the image pickup device to the mounting base.