Patent ID: 6741339
Filing Date: 2004-05-25
Classification: G01M,G02B

Abstract:
An apparatus for inspecting optical properties of a collimator subject to inspection, wherein the collimator to be inspected includes a pigtail formed with first and second fibers, a GRIN lens disposed coaxially relative to the pigtail, and a glass tube supporting the pigtail and the GRIN lens in a single unit, the apparatus comprising:an inspection table; a gripping part provided on the inspection table, gripping the collimator subject to inspection; a light supplying part transmitting a predetermined optical signal to the first fiber; a light receiving part connected to the second fiber, receiving an optical signal returned from the second fiber, after the predetermined optical signal enters the first fiber; a total reflection mirror positioned coaxially relative to the collimator subject to inspection at a predetermined distance from the collimator subject to inspection and totally reflecting the predetermined optical signal, which entered and then exited the first fiber, back to the collimator; a measuring part calculating a first value corresponding to the predetermined optical signal, which entered the first fiber, and a second value, corresponding to the optical signal returned from the second fiber; and an image displaying part displaying the first value and the second value obtained from the measuring part.