An optical scanning device includes a light source and a beam detector for taking a main scanning start time of a light beam emitted from the light source and deflection-scanned by a deflection-scanning component to a predetermined main scanning direction. On the light source and the beam detector, the emission side of the light source and the light receiving side of the beam detector face the light-incident side of an fθ lens, which is longer in the main scanning direction. The light source is arranged on the upstream side in the main scanning direction and the beam detector is arranged on the downstream side in the main scanning direction, or the beam detector is arranged on the upstream side in the main scanning direction and the light source is arranged on the downstream side in the main scanning direction.

An optical scanning device includes a light source, a beam detector that takes a main scanning start time of a light beam emitted from the light source and deflection-scanned in a predetermined main scanning direction by a deflection-scanning component, and a housing with a support portion that supports reflecting mirrors in different arrangement positions so arrangement angles are different from each other. The support portion includes a first support portion that supports a first side surface of the reflecting mirror in a plurality of arrangement positions. A second support portion supports the first side surface of the mirror with the first support portion, causing a first arrangement angle in the first arrangement position of the reflecting mirror. A third support portion supports the first side surface of the reflecting mirror with the first support portion, causing a second arrangement angle in a second arrangement position of the reflecting mirror.

A method for scanning a microarray, including (a) providing a microarray to an optical scanner, wherein the microarray includes a surface having features having different target molecules; (b) scanning the surface in the x or y direction to acquire optical signals from the features at sequential regions of the surface, wherein the focus setting between the optical scanner and the surface is dynamically controlled in real time by repeatedly (i) adding a predetermined focal offset, thereby introducing an error in the focus setting, and (ii) adjusting the focus setting to reduce the error in the focus setting, thereby acquiring the optical signals from different regions at different degrees of focus such that a subset of the regions that are scanned have an introduced focus error; and (c) analyzing the optical signals that are obtained at the different degrees of focus to identify the different target molecules.

A light deflector 130 includes: a control unit 106 configured to generate a resonant drive signal for resonantly driving an MEMS mirror 133, and a non-resonant drive signal for non-resonantly driving the MEMS mirror 133; a resonant sensor 144 configured to detect the resonant drive of the MEMS mirror 133 and generate a resonant sensor signal; and a sensor signal processing unit 103 configured to acquire a phase difference between the resonant drive signal generated by the control unit 106 and the resonant sensor signal, in a case where the MEMS mirror 133 is resonantly driven in a Y-axis direction, also the MEMS mirror 133 is non-resonantly driven in an X-axis direction, and scanning is performed. The control unit 106 calculates an amplitude of the non-resonant drive of the MEMS mirror 133 on the basis of a change in the above phase difference.

Provided is a scanner system includes a laser scanner and a remote controller thereof. The remote controller includes a guide light transmitting unit. The laser scanner includes a guide light receiving unit for detecting the guide light transmitting unit. The laser scanner directs the optical axis of distance-measuring light to the guide light transmitting unit based on a light reception signal and set a data exclusion range with reference to the direction of the guide light transmitting unit. The laser scanner remeasures point cloud data of the data exclusion range in accordance with a measurement permission from the remote controller upon measuring point cloud data of an entire measurement range, and deletes the point cloud data of the data exclusion range from the point cloud data of an entire measurement range, and replacing the deleted data with remeasured point cloud data to acquire entire point cloud data.

A mirror driving device includes a detector configured to output a detection signal having a ringing component included in oscillation of a mirror, a driving waveform generator configured to generate a sawtooth driving waveform that oscillates the mirror, a superimposing waveform generator configured to generate a superimposing waveform to be superimposed to the sawtooth driving waveform, a periodic signal generator configured to generate a periodic signal having a frequency identical to or near a ringing frequency of the ringing component, a correlation calculator configured to calculate a correlation value between the periodic signal and the detection signal, and an amplitude adjuster configured to adjust an amplitude of the superimposing waveform to reduce the ringing component, based on the correlation value.

The present invention relates to a head device of a three-dimensional modelling equipment, and a modelling plane scanning method using the same, the head device of a three-dimensional modelling equipment comprising: a modelling light source array having a plurality of modelling light sources; a light guide part, installed at a given position above a modelling plane, having a function of reflecting modelling rays from the modelling light source array so as to be incident on the modelling plane; and a controller for controlling the operations of the modelling light source array and the light guide part in a conjoined manner, wherein a plurality of modelling rays generated from the plurality of modelling light sources are irradiated while forming one line scan having a first axial direction on the modelling plane, and the light guide part continuously or intermittently moves the one line scan on the modelling plane to irradiate the modelling light rays across the modelling plane. The present invention has the effects of enabling high-speed scanning to be performed, and modelling precision to be enhanced through precise scanning control.

The optical scanning device includes a swingable reflector; a blocking unit that is provided in the reflector to move in linkage with the reflector; and a sensor unit that includes at least a first sensor unit and a second sensor unit, wherein each of the first and second sensor units includes an output unit, which is a light generator or an electromagnetic wave generator configured to output a detection target and a detection unit, which is a light receiver or an electromagnetic wave receiver configured to detect the detection target. The output unit is at a position that faces the detection unit. When the reflector is in a predetermined swing angle range, the blocking plate blocks a path of the detection target between the output unit and the detection unit.

An image forming apparatus includes first and second light sensors positioned in a laser scanning system of at least one color, such that scanned light is detected by the first light sensor and then by the second light sensor and light sensing surfaces of the first and second light sensors are not parallel, and a control unit connected to the first and second light sensors and configured to determine a time difference in the timing of light detection by the first and second light sensors and to execute a color position shift operation upon determining that the time difference is greater than a first threshold value.

An optical scanning device for an electrophotographic printer includes a light source that radiates a light beam and a light deflector that deflects the light beam radiated by the light source in a main scanning direction. The optical scanning device also includes a synchronization detection sensor having a sensing region that receives a portion of the light beam deflected by the light deflector. The sensing region has a greater length in the main scanning direction than in a sub-scanning direction.