Patent ID: 6076939
Filing Date: 2000-06-20
Classification: G02B,H04B

Abstract:
An alignment device at a first terminal for facilitating initial detection of said first terminal by a second terminal and aligning optical beams conveyed between said first and second terminals comprising:a light beacon installation at said first terminal for transmitting a search beam to facilitate initial detection of said first terminal by said second terminal,a rough alignment device at said first terminal for roughly aligning optical beams conveyed between said first and second terminals comprising a first mirror which is rotatable around a first axis in relation to an optical unit and is at an angle of at least approximately 45.degree. in respect to the first axis,a second mirror which is rotatable around a second axis oriented transversely in respect to the first axis and is at an angle of at least approximately 45.degree. in respect to the second axis of rotation, wherein the second axis can be rotated around the first axis for moving the second mirror within a spatial angle inside the area of a hemisphere, anda fine adjustment device at said first terminal for more finely aligning optical beams conveyed between said first and second terminals comprising a tiltable seating device for said first mirror in order to fasten said first mirror in a tiltable manner,an actuator device for tilting the tiltably seated first mirror in relation to its center normal line inside a spatial angle which is considerably narrower than the hemisphere, andwherein the tiltably seated first mirror is embodied with reduced mass.