Abstract: A method for reducing frequency interference, and a communication satellite system. The method includes configuring the communication satellite system, determining a first range of areas in which a spatial isolation angle between the LEO satellite and the GEO satellite does not satisfy a minimum spatial isolation angle within service areas of the movable spot beams, enabling the movable spot beams to not enter the areas, and when the movable spot beams of the transmitting and receiving user antennas of multiple adjacent LEO satellites provide services to a same area, calculating a spatial isolation angles between the movable spot beams of the transmitting and receiving user antennas of any two adjacent LEO satellites, and in response to the spatial isolation angle not satisfying the minimum spatial isolation angle, assigning different sub-frequencies to the movable spot beams that do not satisfy the minimum spatial isolation angle.

Abstract: The present disclosure provides a compressor rotor, a compressor and a refrigerant circulation system. The compressor rotor includes: a motor rotor including a plurality of rotor sections, a locking rod, a compression unit rotating part and a locking member. The rotor sections are fixedly connected in an axial direction and are provided with an axial through hole and the locking rod penetrates through the axial through hole. The compression unit rotating part is located at the end part of the motor rotor and is connected to the locking rod. The locking member is configured to lock the compression unit rotating part on the locking rod. The locking rod, the compression unit rotating part and the locking member form a pressing structure which applies a pressure toward an axial inner side to the motor rotor.

Abstract: Provided is an eyeglass lens configured to cause rays that have entered from an object-side surface to be emitted from an eyeball-side surface and cause the emitted rays to converge at a predetermined position A. The eyeglass lens includes a lens base material having a plurality of base material convex portions on at least one of the object-side surface and the eyeball-side surface, and the eyeglass lens has a configuration for suppressing stray light rays that do not pass through the vicinity of the predetermined position A or the vicinity of the position B that is closer to the object than the predetermined position A is.

Abstract: A well cementing method is described for improving cementing quality by controlling the hydration heat of cement slurry. By controlling the degree and/or rate of hydration heat release from cement slurry, the method improves the hydration heat release during formation of cement with curing of cement slurry, improves the binding quality between the cement and the interfaces, and in turn improves the cementing quality at the open hole section and/or the overlap section. The cementing method improves cementing quality of oil and gas wells and reduces the risk of annular pressure.

Abstract: Provided is an eyeglass lens 1 configured to cause rays that have entered from an object-side surface 3 to be emitted from an eyeball-side surface 4, and cause the emitted rays to converge at a predetermined position A. The eyeglass lens 1 includes a lens base material 2 having a plurality of base material convex portions 6 on at least one of the object-side surface 3 and the eyeball-side surface 4, and a coating film covering the surface provided with the base material convex portions 6. The shape of convex portions present on the outermost surface of the eyeglass lens located on a side on which the base material convex portions 6 are provided is an approximate shape of the base material convex portions configured to cause rays that have entered the eyeglass lens 1 to converge at a position B that is closer to the object than the predetermined position A is.

Abstract: A technology for inhibition of myopia progression adapted to the RPR of the wearer is provided. A spectacle lens and related technology are provided that include a base area that causes a beam that enters through an object-side surface to exit through an eye-side surface and converge on a retina via the eye, and a plurality of defocus areas that each contact the base area and have a characteristic whereby a beam that passes through at least a portion of the defocus area is incident on the retina as a diverging ray, and, in not less than half of the plurality of defocus areas, at least one of a defocus power and a size of each defocus area is set, so as to compensate for a change in retinal spot size due to relative peripheral refraction (RPR) that depends on an eccentricity angle of the eye of the wearer.

Abstract: The present invention provides an eyeglass lens and its related techniques, the eyeglass lens including: a base region that causes a luminous flux that has entered from an object-side face to exit from an eyeball-side face, and to enter an eye and converge on a retina; and a plurality of defocus regions that are in contact with the base region and that are each configured such that a luminous flux that passes through at least a part of the corresponding defocus region enters the retina as diverging light, in which a defocus spot angle (DSA) of the luminous flux that causes a light spot having a size mainly for cones is set in a defocus region located near the center of the eyeglass lens, and a defocus spot angle (DSA) of the luminous flux that causes a light spot having a size mainly for rods is set in a defocus region located near the periphery of the eyeglass lens.

Abstract: An eyeglasses lens evaluation device includes a fixation point setting part to set a fixation point on an evaluation target space and set a line of sight passing position on eyeglasses lenses when a wearer wears the eyeglasses lenses and looks at the fixation point, an apparent position calculating part to calculate an apparent position of each of a plurality of evaluation points set on the evaluation target space in a state where the wearer wears the eyeglasses lenses and fixates the wearer's eyes on the fixation point via the line of sight passing positions, a difference calculating part to calculate, for each of the plurality of evaluation points, a difference between the apparent position and a reference position, and an evaluation index calculating part to calculate an evaluation index by taking statics of the difference for each of the plurality of evaluation points calculated by difference calculating part.

Abstract: The present invention provides an eyeglass lens and its related techniques, the eyeglass lens including: a base region that causes a light flux that has entered from an object-side face to exit from an eyeball-side face, and to enter an eye and converge at a position A on a retina; and a plurality of defocus regions that are in contact with the base region, wherein the defocus regions each include a first portion and a second portion, a refractive power of the first portion is within ±0.12 D of the refractive power of the base region, and a light flux that passes through the second portion of the defocus region is incident on the position A as diverging light.

Abstract: The present invention provides an eyeglass lens and its related techniques, the eyeglass lens including: a base region that causes a light flux that has entered from an object-side face to exit from an eyeball-side face, and to enter an eye and converge at a position A on a retina; and a plurality of defocus regions that are in contact with the base region, in which a light flux that passes through at least part of each defocus region is incident on the position A as diverging light, wherein a refractive power in the defocus regions increases in a direction from a center portion to a peripheral portion.

Abstract: Provided is an eyeglass lens 1 configured to cause rays that have entered from an object-side surface 3 to be emitted from an eyeball-side surface 4, and cause the emitted rays to converge at a predetermined position A. The eyeglass lens 1 includes a lens substrate 2 having a plurality of substrate convex portions 6 on at least one of the object-side surface 3 and the eyeball-side surface 4, and a coating film covering the surface provided with the substrate convex portions 6. The shape of convex portions present on the outermost surface of the eyeglass lens located on a side on which the substrate convex portions 6 are provided is an approximate shape of the substrate convex portions configured to cause rays that have entered the eyeglass lens 1 to converge at a position B that is closer to the object than the predetermined position A is.

Abstract: Provided are a spectacle lens and a technique associated therewith, the spectacle lens including: an object-side surface and an eyeball-side surface; a first refractive region having a first refractive power based on a prescription for correcting a refractive error of an eye; and a second refractive region having a refractive power different from the first refractive power, the second refractive region having a function of forming a focal point at a position other than a retina of the eye so as to suppress progression of the refractive error of the eye, wherein an interface portion is disposed inside the spectacle lens, the interface portion includes a base portion, and convex portions protruding from the base portion, or concave portions recessed from the base portion, the function of the second refractive region is exerted by using mutually different respective refractive indexes of two types of members sandwiching the interface portion therebetween, and the convex portions or the concave portions, and an o

Abstract: A binocular visual function measurement method includes a visual target presentation step of presenting a right eye image to be viewed by the right eye of a measurement subject and a left eye image to be viewed by the left eye of the measurement subject to the subject in a space where real space information is blocked out; a presentation control step of changing positions where the right and left eye images are presented, relative to each other; a timing detection step of detecting a timing at which the measurement subject is unable to fuse the right and left eye images when the presentation positions are changed; and a parameter value calculation step of calculating a predetermined parameter value regarding a binocular visual function of the measurement subject based on a relationship between the relative positions of the right and left eye images when the timing is detected.

Abstract: Provided is a method for evaluating production precision of a spectacle lens having micro convex segments protruding from a convex surface on an object side of the spectacle lens, including measuring a shape of the convex surface of the spectacle lens; setting an actual device virtual model including a spectacle lens model based on the measured shape and an eyeball model; performing ray tracing calculation on the actual device virtual model and specifying an actual device convergence position where light rays converge on an front side of a retina of the eyeball model; and evaluating production precision of the spectacle lens on the basis of the actual device convergence position.

Abstract: An object is to not lose an effect of suppressing the progression of myopia or hyperopia even in a peripheral area of a spectacle lens. A spectacle lens and a technology related thereto are provided, the spectacle lens including: a first area that causes light rays incident on an object-side face of the lens to exit from an eyeball-side face of the lens and to converge at a predetermined position A on a retina of a wearer; and a plurality of second areas configured to cause light rays to converge at a position B on the object side or a position C on the distal side relative to the position A, wherein, in the first area in a peripheral area of the spectacle lens that is a radius range from 4.

Abstract: An aspect is to not impair an effect of suppressing the progression of myopia or hyperopia even in a peripheral area of a spectacle lens. A spectacle lens and a technology related thereto are provided, the spectacle lens including: a first area that causes light rays incident on an object-side face of the lens to exit from an eyeball-side face of the lens and to converge at a predetermined position A on a retina of a wearer; a plurality of defocusing second areas configured to cause light rays to converge at a position B on the object side or a position C on the distal side relative to the position A, wherein at least some of the second areas in a peripheral area of the spectacle lens that is a radius range from 4.5 mm to 25 mm from a lens center have a shape that suppresses a variation in a defocusing effect, the variation being more likely to occur as a distance from the lens center increases.

Abstract: Provided is a method for evaluating an eyeglass lens that has a plurality of convex portions on at least one of an object-side surface and an eyeball-side surface, in which the eyeglass lens is evaluated based on the number of rays at a plurality of focal positions A at which rays, which pave passed through the plurality of convex portions in a predetermined evaluation region of the eyeglass lens, converge when ray tracing is performed on the predetermined evaluation region, and technology related thereto.

Abstract: Provided are an eyeglass lens 1 that is configured such that a pencil of rays that has entered from an object-side surface 3 passes through the eye and converges at a position A on the retina after being emitted from an eyeball-side surface 4 and in which a function of causing a pencil of rays to converge at a position B that is different from the position A in a light traveling direction is added to the surface of a lens substrate portion 2, and techniques associated with the eyeglass lens 1.

Abstract: Provided is an eyeglass lens 1 configured to cause rays that have entered from an object-side surface 3 to be emitted from an eyeball-side surface 4, and cause the emitted rays to converge at a predetermined position A. The eyeglass lens 1 includes a lens base material 2 having a plurality of base material convex portions 6 on at least one of the object-side surface 3 and the eyeball-side surface 4, and a coating film covering the surface provided with the base material convex portions 6. The shape of convex portions present on the outermost surface of the eyeglass lens located on a side on which the base material convex portions 6 are provided is an approximate shape of the base material convex portions configured to cause rays that have entered the eyeglass lens 1 to converge at a position B that is closer to the object than the predetermined position A is.

Abstract: Provided is an eyeglass lens 1 configured to cause rays that have entered from an object-side surface 3 to be emitted from an eyeball-side surface 4 and cause the emitted rays to converge at a predetermined position A. The eyeglass lens 1 includes a lens base material 2 having a plurality of base material convex portions 6 on at least one of the object-side surface 3 and the eyeball-side surface 4, and a coating film covering the surface provided with the base material convex portions 6, in which convex portions present on the outermost surface of the eyeglass lens 1 located on a side on which the base material convex portions 6 are provided and the base material convex portions 6 have common light ray convergence properties.