Reference Lens

Reference Lens for Interferometer Mount（Zygo, Apre, Fujifilm, Tomei Giken, etc.）

A wide variety of 2" and 4" Fno. are available.

Can be installed on various interferometer manufacturers.
In addition to the general condensing type, a diverging type is also available, enabling measurement over a wide area even when the interferometer stroke is short for concave surface measurement.

【Reference Lens】
・Zygo、Fujifilm、Tomei Giken、Apre
・Spherical Condensing type, Divergent type
・plane reference board
・ radius of curvature：Approx. -4,000 (concave)～Approx. ＋5,000 (convex)
・ Measuring Diameter：Approx. Φ200mm max.
・Surface accuracy：λ/20
・ mount：Attachable to laser interferometer mounts of various companies
・Special coatings for highly reflective test objects
・ Custom design and manufacturing are also available.

Please contact us.