Apparatus and method for aligning optical axes of lenses and assembling camera module

An apparatus for aligning optical axes of lenses and assembling a camera module, the apparatus comprising:

• a support block configured to support a substrate;
• a lens holder configured to be fastened to the substrate by means of three or more bolts;
• a lens barrel attached to the lens holder;
• a lens mounted on the lens barrel;
• an image sensor installed on the substrate and configured to detect an image of a test chart through the lens;
• a lens clamper configured to clamp and move the lens barrel on a surface of the lens holder to match a center point of the lens with a center point of the image sensor according to the image of the test chart;
• a vision camera disposed above the image sensor and configured to detect an image of the image sensor through a holder hole of the lens holder, wherein the support block or the test chart is configured to be shifted to match the center point of the image sensor with a center point of the test chart according to the image of the image sensor;
• a displacement sensor configured to detect a tilted state of at least one of the image sensor, the lens barrel, and the substrate to generate tilt information;
• a bolt fastener configured to tighten the three or more bolts to fasten the lens holder to the substrate;
• and
• a controller configured to control the bolt fastener and an axis of the support block according to the tilt information to correct the tilted state of the image sensor, wherein
• the bolt fastener is configured to tighten the three or more bolts with different fastening levels to adjust gaps between the lens holder and the substrate.