Abstract: A polyimide resin precursor is obtained by allowing a diamine and an acid anhydride to react with each other. The diamine includes p-phenylenediamine, a bis(aminophenoxy)benzene, and 2-(4-aminophenyl)benzoxazol-5-amine. The acid anhydride includes a biphenyl tetracarboxylic dianhydride. The content of the p-phenylenediamine is 30 to 75% by mol, the content of the bis(aminophenoxy)benzene is 10 to 30% by mol, and the content of the 2-(4-aminophenyl)benzoxazol-5-amine is 10 to 50% by mol, with respect to the total of the diamine. The content of the biphenyl tetracarboxylic dianhydride is 78% by mol or more with respect to the total of the acid anhydride.

Abstract: An eyeglass frame shape measurement device includes: an eyeglass frame holding unit including a first slider and a second slider for holding an eyeglass frame; a rim measuring unit including a tracing stylus for a rim of the eyeglass frame, and detecting the movement position of the tracing stylus to measure a shape of the rim; a template holder configured to attach a template and a measurement object of a demo lens; a template measuring unit including a tracing stylus shaft configured to contact an edge of the measurement object attached to the template holder, for measuring radius vector information of the measurement object; and a housing portion provided to house the template holder and provided in one of the first slider and the second slider when measurement using the template measuring unit is not being performed.

Abstract: An apparatus for measuring a shape of an eyeglass frame, includes: a tracing stylus to detect a position of the rim in a moving radius direction and in a vertical, a tracing stylus shaft for the tracing stylus, a holding unit movably holding the tracing stylus shaft and including a pressure applying element for pressing a tip end of the tracing stylus to the rim, a moving unit for moving the holding unit, a rotating unit for rotating the holding unit around an axis along a vertical direction; a moving radius position detection unit configured to detect a position of the tracing stylus; and a controller configured to obtain a rotating angle of the rotating unit and a position of the holding unit in the moving radius direction at a next measurement position, and control the rotating unit and the moving unit.

Abstract: An eyeglass frame shape measurement device includes: an eyeglass frame holding unit including a first slider and a second slider for holding an eyeglass frame; a rim measuring unit including a tracing stylus for a rim of the eyeglass frame, and detecting the movement position of the tracing stylus to measure a shape of the rim; a template holder configured to attach a template and a measurement object of a demo lens; a template measuring unit including a tracing stylus shaft configured to contact an edge of the measurement object attached to the template holder, for measuring radius vector information of the measurement object; and a housing portion provided to house the template holder and provided in one of the first slider and the second slider when measurement using the template measuring unit is not being performed.

Abstract: An apparatus for measuring a shape of an eyeglass frame, includes: a tracing stylus moving unit that includes a tracing stylus detecting a position of a rim of the frame in a moving radius direction and in a vertical direction, a tracing stylus shaft for the tracing stylus, a holding unit configured to vertically-movably hold the tracing stylus shaft, a vertical direction moving unit for moving the holding unit in the vertical direction, and a moving radius direction moving unit for moving the holding unit in the moving radius direction so that the tracing stylus traces the rim; a vertical position detection unit for detecting a position of the tracing stylus in the vertical direction; and a controller for obtaining a next measurement position of the holding unit in the vertical direction based on the detecting result of the vertical position detection unit, and controls the vertical direction moving unit.

Abstract: An apparatus for measuring a shape of an eyeglass frame, includes: a tracing stylus moving unit that includes a tracing stylus detecting a position of a rim of the frame in a moving radius direction and in a vertical direction, a tracing stylus shaft for the tracing stylus, a holding unit configured to vertically-movably hold the tracing stylus shaft, a vertical direction moving unit for moving the holding unit in the vertical direction, and a moving radius direction moving unit for moving the holding unit in the moving radius direction so that the tracing stylus traces the rim; a vertical position detection unit for detecting a position of the tracing stylus in the vertical direction; and a controller for obtaining a next measurement position of the holding unit in the vertical direction based on the detecting result of the vertical position detection unit, and controls the vertical direction moving unit.

Abstract: An apparatus for measuring a shape of an eyeglass frame, includes: a tracing stylus to detect a position of the rim in a moving radius direction and in a vertical, a tracing stylus shaft for the tracing stylus, a holding unit movably holding the tracing stylus shaft and including a pressure applying element for pressing a tip end of the tracing stylus to the rim, a moving unit for moving the holding unit, a rotating unit for rotating the holding unit around an axis along a vertical direction; a moving radius position detection unit configured to detect a position of the tracing stylus; and a controller configured to obtain a rotating angle of the rotating unit and a position of the holding unit in the moving radius direction at a next measurement position, and control the rotating unit and the moving unit.

Abstract: A cup attaching apparatus for attaching a cup to an eyeglass lens, comprises: a lens mount on which the lens is to be mounted; at least three support pins provided on the lens mount to support the lens when a rear refractive surface of the lens is brought in contact with the support pins; and a first moving mechanism adapted to simultaneously move the support pins to change a distance of each support pin from a central axis for attachment of the cup.

Abstract: A cup attaching apparatus for attaching a cup as a processing jig to an eyeglass lens including an illumination optical system including an illumination light source arranged to illuminate a side of the front surface of the lens by light from the light source; an imaging optical system including an imaging device and a retroreflection member placed on an opposite side from the light source with respect to the lens; an image processing device adapted to process an image signal from the imaging device to detect at least one of a mark point provided on a unifocal lens, a small lens portion of a bifocal lens, and a progressive mark provided on a progressive focal lens and obtain a position of the detected one; and an arithmetic control device adapted to determine an attaching position of the cup based on the position obtained by the image processing device.

Abstract: A cup attaching apparatus for attaching a cup to an eyeglass lens, comprises: a lens mount on which the lens is to be mounted; at least three support pins provided on the lens mount to support the lens when a rear refractive surface of the lens is brought in contact with the support pins; a holding unit adapted to hold the support pins so that a supporting plane defined by the support pins is inclinable; a lens clamp for clamping the lens in cooperation with the lens mount when the lens is mounted on the lens mount; at least three presser pins provided on the lens clamp to clamp the lens when a front refractive surface of the lens is brought in contact with the presser pins; and a locking unit adapted to keep the supporting plane defined by the support pins in a substantially horizontal position when the lens is not clamped between the lens mount and the lens clamp.

Abstract: An eyeglass frame measurement apparatus includes: a measurement unit which includes a tracing stylus to be inserted into a groove of a rim of an eyeglass frame, a moving mechanism for moving the tracing stylus along the groove of the rim, and a detector for detecting movement of the tracing stylus, and obtains three-dimensional shape of the rim based on a detected result by the detector; and a holding unit which includes upper and lower sliders for positioning the frame, left and right clamp pins for clamping the rim and left and right contact portion to be contacted with the rim which is clamped by the clamp pins, and holds the frame fixedly. The left and right clamp pins and the contact portions protrude from each of the upper and lower sliders. Each of the contact portions is formed at the periphery of each of the clamp pins.

Abstract: An eyeglass lens measurement apparatus includes: a measurement unit which includes a tracing stylus to be inserted into a groove of a rim of an eyeglass frame, a moving mechanism for moving the tracing stylus along the groove of the rim, and a detector for detecting movement of the tracing stylus, and obtains three-dimensional shape of the rim based on a detected result by the detector; and a holding unit which includes upper and lower sliders for positioning the frame, left and right clamp pins for clamping the rim and left and right contact portion to be contacted with the rim which is clamped by the clamp pins, and holds the frame fixedly. The left and right clamp pins and the contact portions protrude from each of the upper and lower sliders. Each of the contact portions is formed at the periphery of each of the lamp pins.

Abstract: A cup attaching apparatus for attaching a cup as a processing jig to an eyeglass lens, comprises: an illumination optical system comprising an illumination light source and arranged to illuminate the lens from a side of a front surface of the lens by illumination light from the light source; an imaging optical system comprising an imaging device and a retroreflection member placed on an opposite side from the light source with respect to the lens, the imaging optical system being adapted such that the retroreflection member returns the illumination light passing through the lens back to its incoming direction, and the imaging device receives the returned illumination light, and the imaging optical system being adjusted to focus on a point near a surface of the lens; an image processing device adapted to process an image signal from -the- imaging device to detect at least one of a mark point provided on a unifocal lens, a small lens portion of a bifocal lens, and a progressive mark provided on a progressive fo

Abstract: An eyeglass frame measurement apparatus includes a holding unit; a rotational base and a tracing stylus arranged on the rotational base. Three-dimensional shape of a frame is measured by detecting the movement of the tracing stylus in a radius direction and a warpage direction. Slit place is integrally arranged with the stylus and a light-projection-and-receiving unit that includes a light-emitting portion and a two-dimensional sensor capable of selecting a received pixel is arranged on the base. The two-dimensional sensor includes first and second light-receiving lines not parallel to each other, and includes a first slit not parallel to the first light-receiving line and a second slit not parallel to the second light-receiving line. The movement of the stylus is detected based on a projection position of the first and second slits detected by the first and second light-receiving lines.

Abstract: An eyeglass frame measurement apparatus includes a holding unit; a rotational base and a tracing stylus arranged on the rotational base. Three-dimensional shape of a frame is measured by detecting the movement of the tracing stylus in a radius direction and a warpage direction. Slit place is integrally arranged with the stylus and a light-projection-and-receiving unit that includes a light-emitting portion and a two-dimensional sensor capable of selecting a received pixel is arranged on the base. The two-dimensional sensor includes first and second light-receiving lines not parallel to each other, and includes a first slit not parallel to the first light-receiving line and a second slit not parallel to the second light-receiving line. The movement of the stylus is detected based on a projection position of the first and second slits detected by the first and second light-receiving lines.

Abstract: A cup attaching apparatus for attaching a cup to an eyeglass lens, comprises: a lens mount on which the lens is to be mounted; at least three support pins provided on the lens mount to support the lens when a rear refractive surface of the lens is brought in contact with the support pins; a holding unit adapted to hold the support pins so that a supporting plane defined by the support pins is inclineable; a lens clamp for clamping the lens in cooperation with the lens mount when the lens is mounted on the lens mount; at least three presser pins provided on the lens clamp to clamp the lens when a front refractive surface of the lens is brought in contact with the presser pins; and a locking unit adapted to keep the supporting plane defined by the support pins in a substantially horizontal position when the lens is not clamped between the lens mount and the lens clamp.

Abstract: A cup attaching apparatus for attaching a cup to an eyeglass lens, comprises: a lens mount on which the lens is to be mounted; at least three support pins provided on the lens mount to support the lens when a rear refractive surface of the lens is brought in contact with the support pins; and a first moving mechanism adapted to simultaneously move the support pins to change a distance of each support pin from a central axis for attachment of the cup.

Abstract: A draining device for removing processing water attached to a lens includes: a first lens holding shaft to which a cup attached to a refractive surface of the lens as a processing jig can be fitted; and a rotating unit which rotates the first lens holding shaft to remove the water by centrifugal force.

Abstract: A draining device for removing processing water attached to a lens includes: a first lens holding shaft to which a cup attached to a refractive surface of the lens as a processing jig can be fitted; and a rotating unit which rotates the first lens holding shaft to remove the water by centrifugal force.

Abstract: A draining device for removing processing water attached to a lens includes: a first lens holding shaft to which a cup attached to a refractive surface of the lens as a processing jig can be fitted; and a rotating unit which rotates the first lens holding shaft to remove the water by centrifugal force.