Abstract: An optical scanning device includes a reflector that is pivotable, a light-emitter that emits a detection light toward the reflector, a detector that receives the detection light reflected at the reflector, and a light-blocking unit that includes a slit wherethrough the detection light passes. The light-blocking unit is disposed on an optical path whereby the detection light reflected from the reflector advances to the detector. The slit has an aspect ratio where a length of the slit in a direction in which the optical path extends relative to a length of the slit in a width direction is equal to or greater than a predetermined value. The width direction is along a pivoting direction of the reflector, of an opening end portion of the slit. The detector is configured to detect a pivot angle of the reflector by receiving the detection light that passes through the slit.

Abstract: A position detecting apparatus includes a light-transmitting mirror that pivots around a pivot shaft and reflects measuring light from a light source; a light-receiving mirror that pivots around the pivot shaft and reflects returning light from an object; and a light-receiving element that receives the returning light from the light-receiving mirror. When the light-transmitting mirror and the light-receiving mirror are at rest, a first mirror angle between a mirror surface of the light-receiving mirror and a direction from the pivot shaft to the light-receiving element is larger than a second mirror angle between a mirror surface of the light-transmitting mirror and the direction.

Abstract: An optical scanning device includes a reflector that is pivotable, a light-emitter that emits a detection light toward the reflector, a detector that receives the detection light reflected at the reflector, and a light-blocking unit that includes a slit wherethrough the detection light passes. The light-blocking unit is disposed on an optical path whereby the detection light reflected from the reflector advances to the detector. The slit has an aspect ratio where a length of the slit in a direction in which the optical path extends relative to a length of the slit in a width direction is equal to or greater than a predetermined value. The width direction is along a pivoting direction of the reflector, of an opening end portion of the slit. The detector is configured to detect a pivot angle of the reflector by receiving the detection light that passes through the slit.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A laser device is provided that comprises a light source, a first mirror, a second mirror, and a light receiver. The light source emits light. The first mirror is pivotable around a pivot axis. The first mirror reflects the light from the light source toward an object. The second mirror is arranged relative to the first mirror in an axial direction of the pivot axis and pivotable around the pivot axis. The second mirror reflects the light reflected by the object in a specific direction. The light receiver receives the light reflected by the second mirror. The light receiver is disposed at a position in the axial direction that is substantially the same as the light source.

Abstract: 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.

Abstract: A position detecting apparatus includes a light-transmitting mirror that pivots around a pivot shaft and reflects measuring light from a light source; a light-receiving mirror that pivots around the pivot shaft and reflects returning light from an object; and a light-receiving element that receives the returning light from the light-receiving mirror. When the light-transmitting mirror and the light-receiving mirror are at rest, a first mirror angle between a mirror surface of the light-receiving mirror and a direction from the pivot shaft to the light-receiving element is larger than a second mirror angle between a mirror surface of the light-transmitting mirror and the direction.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: This position detection apparatus includes a plurality of light receiving portions receiving a reflected laser beam from an indicator, a lens, a masking portion arranged between the light receiving portions and the lens, having a masking surface restricting the reflected laser beam guided to the light receiving portions in a direction orthogonal to a projection surface, and a determination portion determining a three-dimensional position in a projection image indicated by the indicator. The masking surface of the masking portion has such a concave shape that opposing ends thereof are closer to the lens than a central portion thereof.

Abstract: A scanning position of laser light applied to a projection plane is detected, and based on the detected scanning position, a synchronization signal is generated to designate a scan timing. A correction region detection portion detects whether or not a part corresponding to a prescribe region of an image on the projection plane is scanned by laser light, based on the generated synchronization signal. When the part corresponding to the prescribed region is scanned, a correction amount derivation portion corrects a gradation signal based on the difference between the detected quantity of laser light and a prescribed quantity of light to be output from the laser for displaying the image in the prescribed region.

Abstract: This position detection apparatus includes a plurality of light receiving portions receiving a reflected laser beam from an indicator, a lens, a masking portion arranged between the light receiving portions and the lens, having a masking surface restricting the reflected laser beam guided to the light receiving portions in a direction orthogonal to a projection surface, and a determination portion determining a three-dimensional position in a projection image indicated by the indicator. The masking surface of the masking portion has such a concave shape that opposing ends thereof are closer to the lens than a central portion thereof.