Funai Electric Company Ltd.

Kyoto University

Atsushi Mushimoto

Ryusuke Horibe

Manabu Murayama

Yuichiro Masuda

Tomohisa Hirai

Shingo Setono

Fumitoshi Matsuno

A laser rangefinder includes a light source, a scanning mirror that scans laser light emitted from the light source by oscillating about an axis of oscillation J extending in a predetermined direction, a first lens that is disposed on an optical path of reflected light from a target object and condenses the reflected light onto the scanning mirror, a second lens that is disposed on an optical path of and condenses reflected light from the scanning mirror, and a photodetector that receives the reflected light condensed by the second lens. The first lens and the second lens are disposed in positions other than positions on an optical path of the laser light between a point of emission from the light source and a point of exit from the laser rangefinder.

Laser rangefinder

A laser scanner includes a light source, a scanning mirror, and a first photodetector. The scanning mirror includes: a first reflective surface reflects the laser light from the light source; and a second reflective surface that reflects, toward the photodetector, the laser light reflected from the target object. The first reflective surface and at least part of the second reflective surface are disposed at mutually different angles. When a first optical axis passing through the target object and the first reflective surface is parallel with a second optical axis passing through the target object and the second reflective surface, a third optical axis passing through the first reflective surface and the light source and a fourth optical axis passing through the second reflective surface and the photodetector are at a predetermined angle relative to one another.

Laser scanner

A laser scanner includes: a light source; a scanning mirror that scans laser light emitted from the light source, toward a target object by oscillating about axis C; a photodetector that generates a photodetection signal upon receiving the laser light reflected from the target object; a controller that controls emission of the laser light by the light source, and that performs sampling on the photodetection signal; and a detector that detects an amount of displacement of the scanning mirror, and calculates a resonant frequency of the scanning mirror based on the amount of displacement detected. The controller determines a time at which the laser light is emitted from the light source and a time at which sampling is performed on the photodetection signal, based on the resonant frequency calculated.

A laser rangefinder includes: a MEMS mirror that changes a traveling direction of laser light; a first photodetector that reflects a portion of the laser light directed in a predetermined direction by the MEMS mirror and receives another portion of the laser light; a second photodetector that receives first reflected light that is reflection of the laser light from a target object outside an enclosure and second reflected light that is reflection of the portion of the laser light from the first photodetector; and a signal processor that calculates a distance from the laser rangefinder to the target object by subtracting, from a first distance from the laser diode to the target object calculated using the first reflected light, a second distance from the laser diode to the first photodetector calculated using the second reflected light, and calculates a direction of the target object with respect to the laser rangefinder.

Laser rangefinder and method of measuring distance and direction

An electronic apparatus includes a light source that outputs a laser light; a scanning unit that scans the laser light; a reflective member having a reflective surface that reflects the laser light; a light-receiving unit that receives a first reflected light reflected by the reflective member; and a signal processing unit that calculates a distance from the light source to the reflective surface using the first reflected light and determines a direction in which the laser light is output using the distance.

Electronic apparatus and method for measuring direction of output laser light

A scanner apparatus includes: a scanner having a mirror that is driven into resonance in a first direction; a scanner holder holding the scanner and rotatable about an axis extending in a direction parallel to the first direction; and a driver that oscillates the scanner holder, and the scanner holder includes: a first holding portion holding the scanner; a second holding portion connected to the first holding portion and holding the driver; a connecting portion connected to the second holding portion; and an elastic portion connected to the connecting portion and having elasticity.

Scanner apparatus

An image generating apparatus capable of inhibiting a take-up member from falling without separately providing a stop member is obtained. This image generating apparatus includes a take-up member for taking up an ink sheet, including a spring mount portion, a rotary shaft rotatably inserted into the take-up member, a spring member for regulating the take-up member to rotate only in a take-up direction, mounted on the spring mount portion of the take-up member, and a spring engaging portion engaged with a first end of the spring member. The spring mount portion of the take-up member is integrally provided with a stop portion for inhibiting the spring member from falling.

Image generating apparatus

An image generating apparatus includes a rotatable roller for carrying a paper, provided movably in an axial direction, a roller gear fixedly mounted on the roller, a drive gear meshing with the roller gear and driven by a driving source, and a position adjustment member regulating an axial position of the roller gear so as to hold the roller gear from axial both sides while capable of moving the roller gear to a separate position for separating the roller gear and the drive gear from each other in a state of applying no pressing force to the roller gear and to a mesh position for meshing the roller gear and the drive gear with each other in carrying the paper.

Growing community of inventors

Daito, Japan

Atsushi Mushimoto