The lensometers is also called measural lens dioptre instrument, to measure spherical lens dioptre, cylindric lens dioptre and axis, prism dioptre, and lens optical center etc.

A set of special compound shaping prisms has been designed for a semiconductor laser system on the basis of the luminous property of semiconductor laser and the optical refractive property of prism.

Glan-Taylor prism has important applications in optical field. The quality of the prism is directly affected by the transmissivity and the bandwidth.