Abstract:
A method for designing an eyeglass lens includes: a basic value calculation step of determining a basic visualizing action index representing a visualizing action taken when a person who wears no eyeglasses or single-vision lenses looks at an object; a progressive value calculation step of determining a progressive visualizing action index representing a visualizing action taken when the person who wears reference progressive addition lenses looks at the object; and a lens designing step of enlarging the field of view as compared with that of the reference progressive addition lenses when the progressive visualizing action index shows greater head movement than the basic visualizing action index does, whereas enlarging an aberration region as compared with that of the reference progressive addition lenses when the progressive visualizing action index shows smaller head movement than the basic visualizing action index does.
Abstract:
A sheet conveying apparatus including, a conveying portion conveying a sheet; a rotation detection portion rotatably provided; a sensor portion detecting the conveyed sheet based on a rotational position of the rotation detection portion; a rotation transmission portion transmitting a rotational driving force to the rotation detection portion to rotate the rotation detection portion in a predetermined rotational direction after the rotation detection portion is rotated by being pushed by the leading end of the sheet; and an urging unit configured to apply an urging force to the rotation detection portion so that the rotation detection portion comes into contact with a surface of the sheet, thereafter the rotation detection portion is returned to a waiting position along with the passage of the rear end of the sheet through the rotation detection portion after the rotation detection portion is rotated by the rotational driving force of the rotation transmitting unit.
Abstract:
An information providing device includes: a measurement information receiver receiving, from one or more mobile communication devices, measurement information including position information representing a present position of one mobile communication device and speed information representing a speed of a communication at a given point of time; a measurement information storage unit storing the measurement information received from the one or more mobile communication devices; a specifying information receiver receiving position specifying information for specifying a predetermined position from the mobile communication device; a communication environment information extractor extracting as communication environment information one or more pieces of the measurement information including the speed information of communication speeds measured in the vicinity of the predetermined position from the measurement information stored in the measurement information storage unit; and a communication environment information transmitter transmitting the communication environment information to the mobile communication device having transmitted the position specifying information.