A Plano-concave mirror is a mirror that is flat (flat) on one side and concave on the other. This type of mirror is often used in laser particle counters because it focuses the laser beam, which helps in the precise detection and counting of small particles. The concave surface of the mirror reflects the laser beam to the flat side, which then reflects it back through the concave surface.

Ultra-high reflector coatings for dental mirrors maximize light reflectivity and minimize scattering, providing clinicians with clear, bright, and accurate views of the oral cavity for precise dental examinations.