Patent ID: 6922245
Filing Date: 2005-07-26
Classification: G01B

Abstract:
1. An optical alignment apparatus using visible light source and images, comprising: a first light source for providing light of a visible wavelength range to perform optical alignment; a second light source providing light of an infrared wavelength range; a micrometer stage for aligning the light outputted from the first light source or the second light source with an active area of a detector; a lensed fiber connected to the micrometer stage, for inputting light into the active area of the detector; an optical alignment confirming means for visually confirming whether the light outputted from the lensed fiber is aligned with the active area of the detector; an image information acquiring means connected to the optical alignment confirming means, for acquiring image information; a control means for operating the micrometer stage based on the image information acquired by the image information acquiring means to perform optical alignment; an optical coupler for connecting the first light source and the second light source simultaneously and outputting light to a first output port and a second output port of the optical coupler in a predetermined proportion; and an optical intensity supervising means for controlling optical intensity of light inputted to the active area of the detector by being connected with the optical coupler's output port which is not connected with the detector; wherein the control means includes the micrometer stage to compensate a difference in distances to a beam waist, the difference being generated by different wavelengths of the first light source and the second light source.