Abstract: To reduce the types of blanks such as a semi-finished lens blank, materials, and processing time, a spectacle lens design device disposed at a factory on a manufacturing side and a lens processing device connected thereto block an applicable semi-finished lens blank or lens blank. The semi-finished lens blank or lens blank are blocked so that a reference surface thereof tilts at a predetermined angle using a numerical-control curve generator. The reference surface tilts based on order information sent from an order terminal disposed at a spectacle store on a order-placement side. Both surfaces of a plastic material are formed so that a geometric center of an edge shape positions at a center of a circle of a circular lens thereby satisfy an optical specification of the spectacle lens-related to the order. Next, the circular lens is processed to have the edge shape of the spectacle lens-related to the order to thereby obtain the spectacle lens-related to the order.

Abstract: A manufacturing method of a spectacle lens improving a manufacturing yield and a production efficiency is provided. The manufacturing method of the spectacle lens in which necessary information for a frame machining of a spectacle lens (progressive-power lens 20) including spectacle rim related information is obtained, and both surfaces of a convex surface and a concave surface are edge/polish machined from a spectacle lens blanks.

Abstract: Aims to enable to supply an optimal and dedicated spectacle lens or spectacle for each spectacle wearer, and also to verify a spectacle wearing state appropriately. A spectacle wearing parameter measurement system, sets a spectacle wearer to be in a distance vision state or a near vision state in which, in the near vision state, at least, one of an eyeball rotation angle and a near vision target distance is changeable optionally; takes an image of the spectacle wearer set in the distance vision state or near vision state by an image pickup device; imports the image; and measures and calculates a spectacle wearing parameter based on the image. A server computer of a factory received the image uses the image data to manufacture a spectacle lens or a spectacle.

Abstract: A manufacturing method of a spectacle lens improving a manufacturing yield and a production efficiency is provided. The manufacturing method of the spectacle lens in which necessary information for a frame machining of a spectacle lens (progressive-power lens 20) including spectacle rim related information is obtained, and both surfaces of a convex surface and a concave surface are edge/polish machined from a spectacle lens blanks.

Abstract: Aims to enable to supply an optimal and dedicated spectacle lens or spectacle for each spectacle wearer, and also to verify a spectacle wearing state appropriately. A spectacle wearing parameter measurement system, sets a spectacle wearer to be in a distance vision state or a near vision state in which, in the near vision state, at least, one of an eyeball rotation angle and a near vision target distance is changeable optionally; takes an image of the spectacle wearer set in the distance vision state or near vision state by an image pickup device; imports the image; and measures and calculates a spectacle wearing parameter based on the image. A server computer of a factory received the image uses the image data to manufacture a spectacle lens or a spectacle.

Abstract: Aims to reduce the types of blanks such as a semi-finished lens blank, materials, and processing time. A spectacle lens design device 201 disposed at a factory 200 on a manufacturing side and a lens processing device connected thereto block an applicable semi-finished lens blank or lens blank so that a reference surface thereof tilts at a predetermined angle using a numerical-control curve generator based on order information sent from an order terminal 101 disposed at an spectacle store 100 on a order-placement side, and form both surfaces of a plastic material so that a geometric center of an edge shape positions at a center of a circle of a circular lens to thereby satisfy an optical specification of the spectacle lens-related to the order, and next, the circular lens is processed to have the edge shape of the spectacle lens-related to the order to thereby obtain the spectacle lens-related to the order.

Abstract: A spectacle frame shape measuring apparatus includes a measurement element holding mechanism. The measurement element holding mechanism holds a measurement element in a substantially loadless state along a frame groove formed in the inner circumferential surface of a rim of a spectacle frame. The measurement element holding mechanism includes a rod, balance spring, and evacuating mechanism. The rod is vertically movable and has an upper end portion on which the measurement element is mounted. The balance spring pushes the rod upward to hold the measurement element at a loading position during shape measurement. The evacuating mechanism regularly evacuates the measurement element to an evacuation position, thereby performing three-dimensional measurement of a rim shape. A spectacle frame shape measuring apparatus holder is also disclosed.

Abstract: The present invention provides an inexpensive and convenient method and apparatus for measuring light transmittance of an optical lens having refractive power. The method comprises obtaining the light transmittance of an examined lens from a value corresponding to a ratio between the intensity of measured light detected by a light detector when the examined lens is placed in the path of the measured light emitted from a light source and an intensity of measured light detected by the light detector when there is no lens undergoing examination placed in the path of the measured light so that the measured light does not pass through an examined lens and provides a baseline value. Specifically, the present invention focuses (converges) the measured light at or in a vicinity of a position where the examined lens is disposed when the examined lens is placed in the path of the measured light.

Abstract: An apparatus for and process of attaching a lens holder to an uncut lens for a spectacle lens which enables efficient attachment of the lens holder at a position without the processing interference when the lens holder is attached to a progressive multifocal lens or a multifocal lens. The lens holder can be attached to the uncut lens at a position set outside of a range of processing interference when the positions of hidden marks or an edge of a segment are obtained by inputting and processing an image of the uncut lens by the apparatus for image processing, the obtained positions of the hidden marks or the edge of the segment, data of the spectacle frame and lens holder buildup area shape are processed and the lens holder is attached to the uncut lens.

Abstract: A spectacle frame shape measuring apparatus includes a measurement element holding mechanism. The measurement element holding mechanism holds a measurement element in a substantially loadless state along a frame groove formed in the inner circumferential surface of a rim of a spectacle frame. The measurement element holding mechanism includes a rod, balance spring, and evacuating mechanism. The rod is vertically movable and has an upper end portion on which the measurement element is mounted. The balance spring pushes the rod upward to hold the measurement element at a loading position during shape measurement. The evacuating mechanism regularly evacuates the measurement element to an evacuation position, thereby performing three-dimensional measurement of a rim shape. A spectacle frame shape measuring apparatus holder is also disclosed.

Abstract: The invention provides an automatic lens meter comprising an optical system forming a pattern image by projecting a pattern created by a pattern creating member and measuring optical properties of a lens based on the displacement of the pattern image from a baseline position wherein the examined lens is not in the path of rays in the optical system to a measuring position wherein the examined lens is in the path of the rays. The lens meter includes an image sensor for detecting the position of the pattern image using four line sensors 10a, 10b, 10c and 10d disposed on a pattern image forming plane and arranged in a cross shape, and the pattern creating member forms a pattern image having a quadrangular shape on the pattern image forming plane so that each line sensor intersects a side of the quadrangle, thereby facilitating accurate measurement of desired optical properties.

Abstract: The present invention provides a method and apparatus for automatically and continuously conducting the layout analysis, the blocking (attachment) of an uncut lens to a lens holder, and the process of grinding an edge of three types of lenses, such as a single-vision lens, a progressing multifocal lens and a multifocal lens, utilizing a calculated approximation of the optical center of the uncut lens and by determining the position to which a lens holder should attach to the uncut lens.

Abstract: An apparatus and method for displaying a difference in the Abbe number of an ocular optical lens to facilitate visual appreciation and understanding of the difference by a layperson. The apparatus and method indicates a degree of chromatic aberration at each point of a spectacle lens by inputting data corresponding to an Abbe number and outputting a representation of a region of comfortable vision. A plurality of the data may be obtained using a plurality of spectacle lenses having different Abbe numbers. On a single screen, the invention displays an image of the shape of a spectacle frame, a plurality of regions of comfortable vision (as a circle, ellipse or another closed curve, for example) and the difference in vision due to the difference in the Abbe number is evaluated from the display.

Abstract: The invention provides an automatic lens meter comprising an optical system forming a pattern image by projecting a pattern created by a pattern creating member and measuring optical properties of a lens based on the displacement of the pattern image from a baseline position wherein the examined lens is not in the path of rays in the optical system to a measuring position wherein the examined lens is in the path of the rays. The lens meter includes an image sensor for detecting the position of the pattern image using four line sensors 10a, 10b, 10c and 10d disposed on a pattern image forming plane and arranged in a cross shape, and the pattern creating member forms a pattern image having a quadrangular shape on the pattern image forming plane so that each line sensor intersects a side of the quadrangle, thereby facilitating accurate measurement of desired optical properties.

Abstract: The present invention provides an inexpensive and convenient method and apparatus for measuring light transmittance of an optical lens having refractive power. The method comprises obtaining the light transmittance of an examined lens from a value corresponding to a ratio between the intensity of measured light detected by a light detector when the examined lens is placed in the path of the measured light emitted from a light source and an intensity of measured light detected by the light detector when there is no lens undergoing examination placed in the path of the measured light so that the measured light does not pass through an examined lens and provides a baseline value. Specifically, the present invention focuses (converges) the measured light at or in a vicinity of a position where the examined lens is disposed when the examined lens is placed in the path of the measured light.

Abstract: An apparatus and method for displaying a difference in the Abbe number of an ocular optical lens to facilitate visual appreciation and understanding of the difference by a layperson. The apparatus and method indicates a degree of chromatic aberration at each point of a spectacle lens by inputting data corresponding to an Abbe number and outputting a representation of a region of comfortable vision. A plurality of the data may be obtained using a plurality of spectacle lenses having different Abbe numbers. On a single screen, the invention displays an image of the shape of a spectacle frame, a plurality of regions of comfortable vision (as a circle, ellipse or another closed curve, for example) and the difference in vision due to the difference in the Abbe number is evaluated from the display.

Abstract: The present invention provides a method and apparatus for automatically and continuously conducting the layout analysis, the blocking (attachment) of an uncut lens to a lens holder, and the process of grinding an edge of three types of lenses, such as a single-vision lens, a progressing multifocal lens and a multifocal lens, utilizing a calculated approximation of the optical center of the uncut lens and by determining the position to which a lens holder should attach to the uncut lens.

Abstract: An apparatus for and process of attaching a lens holder to an uncut lens for a spectacle lens which enables efficient attachment of the lens holder at a position without the processing interference when the lens holder is attached to a progressive multifocal lens or a multifocal lens. The lens holder can be attached to the uncut lens at a position set outside of a range of processing interference when the positions of hidden marks or an edge of a segment are obtained by inputting and processing an image of the uncut lens by the apparatus for image processing, the obtained positions of the hidden marks or the edge of the segment, data of the spectacle frame and lens holder buildup area shape are processed and the lens holder is attached to the uncut lens.