Patent ID: 6950180

Claim:
A lens meter comprising: a left measurement optical system including a left light-emitting optical system that emits measurement light to a left eyeglass lens and a left light-receiving optical system; a right measurement optical system including a right light-emitting optical system that emits measurement light to a right eyeglass lens and a right light-receiving optical system; right and left pattern plates provided in said right measurement optical system and said left measurement optical system, respectively, separating a measurement luminous flux into a large number of measurement luminous fluxes; right and left lens receivers provided between said right and left light-emitting optical systems and said right and left light-receiving optical systems, respectively; light-receiving elements that receive the measurement luminous flux to be guided by said light-receiving optical systems; and an arithmetic control circuit that computes optical characteristics of said pair of eyeglass lenses based on an output of said light-receiving elements.