Patent ID: 6245058
Filing Date: 2001-06-12
Classification: A61F

Abstract:
An apparatus for measuring an optical characteristic of an ablation standard object having a known ablation rate, the apparatus comprising:refractive power measuring means for measuring a refractive power of an ablation standard object, which includes a measuring optical system having a projecting optical system for projecting target luminous flux for use in refractive power measurement onto said ablation standard object and a detecting optical system for detecting said target luminous flux projected by said projecting optical system;a first casing and a second casing storing said measuring optical system divided thereinto, wherein said first casing stores part of said measurement optical system fixedly disposed therein and is provided with an aperture though which said target luminous flux passes and said second casing is supported by said first casing and moved from a stowed position to a predetermined measuring position at the time of measurement of said refractive power;retaining means for retaining said ablation standard object placed on said first casing at a predetermined height; andoutput means for outputting the refractive power of said ablation standard object measured by said refractive power measuring means, said ablation standard object having been ablated to form a spherical surface thereon.