Optical Collimator Lenses are designed to reduce beam divergence by transforming expanding light into a collimated output with minimal wavefront distortion. They are widely used in fiber optic communication systems, laser diode modules, and optical sensing devices. The lens design is optimized according to numerical aperture matching, ensuring efficient light collection from point or fiber sources. Depending on application requirements, materials such as BK7, fused silica, or infrared glass are used to achieve wavelength-specific performance stability.