Optical image capturing module, alignment method, and observation method
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United States of America Patent
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Jan 23, 2018
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app pub date -
Dec 3, 2013
filing date -
Dec 27, 2012
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Abstract
An optical image capturing module and an alignment method and an observation method for an upper substrate and a lower substrate using the optical image capturing module are provided. The upper substrate and the lower substrate are disposed opposite. The alignment method includes the following steps of: emitting a light ray; filtering the light ray and dividing the light ray into a light ray at first wavelength and a light ray at second wavelength, whereby the light ray at first wavelength irradiates a pattern on the upper substrate, and the light ray at second wavelength irradiates a pattern on the lower substrate; reflecting the pattern on the upper substrate to an image capturing device; reflecting the pattern on the lower substrate to the image capturing device; and determining the positions of the pattern on the upper substrate and the pattern on the lower substrate on the image capturing device.
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