Condensing element using diffraction grating and manufacturing method thereof
Provided are a light collecting device using a diffraction grating and a method of manufacturing the same. The light converging element includes a central block, a pair of vertical diffraction grating blocks respectively positioned to the left and right of the central block, and a pair of horizontal diffraction grating blocks respectively positioned above and below the central block. The vertical diffraction grating blocks have mutually parallel vertical diffraction gratings in the form of lines extending in the vertical axis direction, and the horizontal diffraction grating blocks have parallel diffraction gratings in the form of lines extending in the horizontal axis direction.
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