title: Angle measurement based on the internal-reflection effect using elongated critical-angle prisms.
abstract: Elongated critical-angle prisms that provide multiple reflections have been used to increase measurement sensitivity while retaining excellent linearity in the recently developed angle-measurement method, angle measurement based on the internal-reflection effect.
authors.forename: P S
authors.initials: PS
authors.lastname: Huang
authors.forename: J
authors.initials: J
authors.lastname: Ni