Abstract: The disclosure is to optimize and display a clear stereoscopic image while securing a depth. A stereoscopic display apparatus is provided. The stereoscopic display apparatus includes a display, a display driver configured to display an elemental image of a stereoscopic image on the display, a light source controller including a first lens array positioned on a rear surface of the display and including a plurality of first cylinder lenses arranged at a preset pitch, a second lens array positioned on a rear surface of the first lens array and including a plurality of second cylinder lenses arranged at a pitch that is wider than the pitch of the first cylinder lenses, a plurality of light sources positioned on rear surfaces of the second cylinder lenses, and a diffusion sheet positioned between the display and the first lens array and positioned at a position including a focal point of each first cylinder lens, and a light source driver configured to drive a line light source illuminating the elemental image.

Abstract: A three-dimensional deposition device and a three-dimensional deposition method used to manufacture a three-dimensional object with high accuracy are provided. A three-dimensional deposition device for forming a three-dimensional shape by depositing a formed layer on a base unit, includes: a powder supply unit which supplies a powder material by injecting the powder material toward the base unit; a light irradiation unit which irradiates the powder material feeding from the powder supply unit toward the base unit with a light beam so that the powder material is melted and the melted powder material is solidified on the base unit to thereby form the formed layer; and a control device which controls operations of the powder supply unit and the light irradiation unit.

Abstract: Provided is a three-dimensional deposition device which forms a three-dimensional object by depositing a formed layer on a base unit, comprising: a powder supply unit which supplies a powder material; a light irradiation unit which irradiates the powder material with a light beam and forms a formed layer by sintering or melting and solidifying at least a part of the powder material irradiated with the light beam; a machining unit which includes a tool and performs a machining operation on the formed layer by the tool; and a controller which serves as a control device controlling an operation of at least one of the powder supply unit, the light irradiation unit, and the machining unit.

Abstract: A three-dimensional deposition device and a three-dimensional deposition method used to manufacture a three-dimensional object with high accuracy are provided. A three-dimensional deposition device for forming a three-dimensional shape by depositing a formed layer on a base unit, includes: a powder supply unit which supplies a powder material by injecting the powder material toward the base unit; a light irradiation unit which irradiates the powder material feeding from the powder supply unit toward the base unit with a light beam so that the powder material is melted and the melted powder material is solidified on the base unit to thereby form the formed layer; and a control device which controls operations of the powder supply unit and the light irradiation unit.

Abstract: Provided is a three-dimensional deposition device which forms a three-dimensional object by depositing a formed layer on a base unit, comprising: a powder supply unit which supplies a powder material; a light irradiation unit which irradiates the powder material with a light beam and forms a formed layer by sintering or melting and solidifying at least a part of the powder material irradiated with the light beam; a machining unit which includes a tool and performs a machining operation on the formed layer by the tool; and a controller which serves as a control device controlling an operation of at least one of the powder supply unit, the light irradiation unit, and the machining unit.

Abstract: Spindle inclination detectors (41A, 41B) are equipped in columns (32A, 32B) of a portal bridge (24) of a machine tool (21). Each spindle inclination detector includes: a string (43) which hangs vertically with an upper end fixed to the column (reinforcement (32b)) and a lower end attached to a weight (45); a gap sensor (44) which is attached to the string to measure a distance to a front face plate (32a) of the column; and an oil damper (46). Moreover, a spindle inclination correction controller provided to the machine tool controls a Peltier device (42A, 42B) attached to a rear face plate (32d) of the column, on a basis of an average distance measured by the gap sensor, and thus corrects an inclination of a spindle (28) due to the thermal deformation of the column by correcting thermal deformation of the column.

Abstract: An object of the present invention is to provide: a spindle inclination detector capable of surely detecting spindle inclination with a simple configuration; and a machine tool including the spindle inclination detector. Spindle inclination detectors (41A, 41B) are equipped in columns (32A, 32B) of a portal bridge (24) of a machine tool (21). Each spindle inclination detector includes: a string (43) which hangs vertically with an upper end fixed to the column (reinforcement (32b)) and a lower end attached to a weight (45); a gap sensor (44) which is attached to the string to measure a distance to a front face plate (32a) of the column; and an oil damper (46).