Patent ID: 7280191

Claim:
A lens meter comprising: a glass unit support for supporting an eye glass unit such that lenses of the eye glass unit are almost horizontal, light sources for emitting given inspection lights, respectively, light-projecting optical systems for projecting inspection lights emitted from the light sources upon the lenses of the eye glass unit supported by the glass unit support substantially along optical axes of the lenses, respectively, light detectors, and light-detecting optical systems for leading transmitted lights of the inspection lights passing the lenses of the eye glass unit to the light detectors, respectively, said glass unit support comprising two sandwiching members which are displaceable nearer or apart from each other and adapted to sandwich an outer peripheral portion of the eye glass unit in cooperation with each other, and inspection glass frame adaptors being capable of being fitted to and detached from said two sandwiching members, respectively, said inspection glass frame adaptors comprising projecting sandwiching portions, respectively, which project toward opposite sandwiching members, respectively, when the adaptors are fitted to the sandwiching members, respectively, and which contact portions of a frame of an inspection glass unit other than movable areas of tabs of detachable lenses projecting from the frame of the inspection glass lens unit supported by the glass unit support as the eye glass unit, whereas portions of the adaptors other than the projecting sandwiching portions do not interfere with the movable areas of the tabs, respectively.