Patent ID: 6433942
Filing Date: 2002-08-13
Classification: G02B

Abstract:
An optical apparatus, comprising:a main body unit; a connector; an optical transmission medium configured to radiate light along an optical axis and connected to the main body unit by the connector so that an end face of the optical transmission medium is at a pre-set angle with respect to the main body unit; a light emitting element fixed in the main body unit and configured to radiate a light beam; a light receiving element fixed at a position lying on the optical axis to receive light from the optical transmission medium; and a sole optical component having a second surface facing a first surface and having a coupling surface interconnecting the first surface and the second surface to define an inside, wherein the sole optical component is fixed at a position arranged offset from the optical axis of the light radiated from the optical transmission medium in the main body unit, wherein the first surface is configured to converge the light beam incident thereon so that the light beam is focussed at a position spaced a pre-set distance from the first surface, and wherein the light emitting element, the light receiving element, the sole optical component, and the connector are secured in a position relative to one another such that a light beam incident on the first surface traverses the inside of the optical component to reflect on the second surface to a point outside the optical component that is adjacent to the end face of the optical transmission medium.