SIGMAKOKI Concave mirror substrate, outer diameter Φ30mm, TC series

This is a concave substrate that can be coated with a deposition film for various total reflection mirrors. Aluminum-coated concave mirrors are also available. They can be used as the primary mirror of a reflecting telescope or as a reflecting mirror in the collimating optical system of a lamp light source. You can select from a wide variety of variations, subdivided by outer size and curvature radius, according to your specifications. Compared to plano-concave lenses (SLB-N), they are processed with high surface accuracy. We also offer laser concave mirror substrates (LCBS) with high surface accuracy for use as laser resonator mirrors. *The back surface is sanded, so it cannot be used in through-beam mode. *Please use concave lenses (SLB-N) when using in through-beam mode. *When used as a cold mirror or partial reflection mirror, a concave substrate with a mirror back surface must be used. *When a high-energy pulsed laser beam is incident, sparks will occur near the focus, causing the wavefront to become distorted. *The outer rim of the concave surface is chamfered, and the edge thickness (te) may vary. For this reason, please use the back surface as the reference surface.