Abstract: A manufacturing condition optimization apparatus includes a yield estimator for estimating a yield of a product having a quality that passes inspection by inspection equipment when a manufacturing condition of the product that is manufactured by manufacturing equipment is changed and an optimization processor for calculating an amount of change in the manufacturing condition at which the yield is maximized.

Abstract: An imaging lens including order from an object side to an image side, a first lens having positive refractive power, a second lens having negative refractive power, a third lens being a double-sided aspheric lens, a fourth lens having a meniscus shape with a concave surface facing the object side near an optical axis, a fifth lens being a double-sided aspheric lens, and a sixth lens having the concave surface facing the image side near the optical axis, wherein the image-side surface of said sixth lens is an aspheric surface which changes to the convex surface at a peripheral portion, and a total track length is 6.0mm or less and below conditional expressions (2) and (3) are satisfied: 20<?d 3<32 ??(2) 20<?d 5<32 ??(3) where ?d3: abbe number at d-ray of the third lens ?d5: abbe number at d-ray of the fifth lens.

Abstract: Compact imaging lens which maintains low-profileness, wide field of view, and properly corrects various aberrations. Imaging lens includes first lens having positive refractive power and convex surface facing object side near an optical axis, second lens having negative refractive power and concave surface facing image side near optical axis, third lens having positive refractive power and concave surface facing image side near optical axis as double-sided aspheric lens, fourth lens having meniscus shape with positive refractive power and concave surface facing object side near optical axis, fifth lens as double-sided aspheric lens, and sixth lens having negative refractive power and concave surface facing image side near optical axis as double-sided aspheric lens, and conditional expression is satisfied: (1) 0.6<?d/f<1.

Abstract: There is provided an imaging lens which is low-profile, has a small f-value, and obtains wide field of view which aberrations are properly corrected, in order from an object side to an image side, comprising a first lens having positive refractive power and a convex surface on an object side near an optical axis, a second lens having negative refractive power and a concave surface on the object side near the optical axis, a third lens having positive refractive power and a convex surface on the image side as a double-sided aspheric lens and a fourth lens having negative refractive power and a concave surface on an image side near the optical axis as a double-sided aspheric lens, wherein a conditional expression (1) below is satisfied: 8.5<ih/f<1.0??(1) where f denotes the focal length of the overall optical system, and ih denotes maximum image height.

Abstract: A subsystem for producing a dye base body used for dyeing a spectacle lens is disclosed. This subsystem includes a camera which photographs the face of a customer, a color memory which stores a plurality of color data, a color selection device for selecting a desired color data from among the plurality of color data stored in the color memory, a display controller for controlling a display to display an image of the customer's face photographed by the camera and coloring a lens area of a displayed spectacle frame image in accordance with the selected color data, a printer for printing using sublimatable dye contained therein, and a print controller for controlling the printer to print a predetermined shape with the dye on a printing base body in accordance with the selected color data to produce the dye base body.

Abstract: A method and system for dyeing a plastic lens by printing a colored layer (2) on a print base body (3) with a dyeing solvent by using a printer (5) electrically controlled, the dyeing solvent containing a dissolved or fine-grained dispersed sublimatable dye, then, placing the print base body having the colored layer in a position where the colored layer faces a plastic lens (14) to be dyed without contact therewith, and heating the print base body in a vacuum to sublimate the dye from the colored layer and deposit the sublimated dye on the lens.