LCBS-25C07-30 Concave Mirror Substrate

[Features]
· A concave substrate to be used as a substrate for laser resonator mirrors.
· The concave and back surfaces are processed with high surface accuracy.
· Selection can be made from a wide range of variations subdivided by outer diameter, focal distance, and so on, to suit the specifications.
· Since the reverse face has been polished as well, sample light can be extracted for pump laser input or power detection.
· As the accuracy of the radius of curvature and surface accuracy are high, it can also be used as a test plate glass for convex lenses.
· A concave mirror substrate (TCA) is also available for the reflecting mirrors used in reflecting telescopes or lamp light sources.
· * The outer ridgeline of the concave surface is chamfered and edge thickness (te) may vary. Therefore, be sure to use the back side as the reference plane.
[Product Specifications]
· [ Common Specifications]
· Material: BK7
· Surface Accuracy: Front (concave) λ/4, back (planar) λ/4
· Error in Radius of Curvature: ±1%
· Coating: Non-Coated
· Effective Range: 90% of External Diameter
· Scratch-Dig: 20-10
· [Individual Specifications]
· Outer diameter φD: φ25 mm
· Rim thickness te: 7 mm
· Central thickness tc: 4.3 mm
· Radius of the curvature r: 30 mm
· Focal distance f: 15 mm