26 results about "Electronic shutter" patented technology

It ensures a wide dynamic range for light metering and suppresses image flicker near the maximum aperture setting of the electronic shutter. [Solution] The endoscope device includes a processor that processes the image signal output from the image sensor. The processor acquires exposure correction information based on a target value for exposure time and the amount of exposure control actually applied to the image sensor, and adjusts the gain of the image signal acquired from the image sensor based on the exposure correction information.

Some embodiments of the present invention provide a technique advantageous in improving the image capturing performance of a photoelectric conversion apparatus having a voltage holding type global electronic shutter function.SOLUTION: According to an embodiment of the present disclosure, there is provided a photoelectric conversion apparatus including a plurality of pixels and a processing circuit configured to process signals read out from the plurality of pixels, wherein each of the plurality of pixels includes a photoelectric conversion element, a first amplification unit including an input node to which a signal from the photoelectric conversion element is input and configured to output a signal obtained by amplifying a signal level of the input node, and a holding unit configured to hold an output signal of the first amplification unit, and a second amplification unit including a second input node to which a signal output from the holding capacitance unit is input and configured to output a signal obtained by amplifying a signal level of the second input node, in which a capacitance value of the holding capacitance unit is changed according to a change in a driving force of at least one of the first amplification unit and the second amplification unit.SELECTED DRAWING: Figure 5

Embodiments relate to field of view correction techniques for shutterless camera systems. A mobile device displaying a first preview of a subject captured by an image capture device of the computing device may perform a zoom operation configured to cause the image capture device to focus on a target. The image capture device is configured to change the focal length when the zoom operation is performed. Concurrent with the image capture device performing the zoom operation, the computing device may then map the focal lengths used by the image capture device to a virtual focal length such that the field of view of the subject remains consistent across the image frames of the first preview of the subject and the zoomed preview of the subject focused on the target displayed on the display screen, and display the zoomed preview of the subject focused on the target.

To provide an imaging apparatus capable of reducing flicker stripes while having an electronic shutter.SOLUTION: The imaging apparatus has a plurality of pixels that photoelectrically convert an image of a subject and a control unit for controlling the exposure of each of the plurality of pixels. The exposure start times and exposure end times of the plurality of pixels differ in at least a portion of the row direction and the column direction. The exposure time of the plurality of pixels is equal.SELECTED DRAWING: Figure 4

This document describes systems and techniques for object-based high-dynamic-range image capturing. In aspects, an image-capturing device can adjust an electronic shutter speed for one or more units of pixels of an image sensor based on luminous level statistical information of detected objects in a captured frame. In this way, the one or more units of pixels configured with modified electronic shutter speeds can capture incident light of a scene in a successive frame with adapted exposure for each object.

To provide a photoelectric conversion device capable of reducing the influence of noise caused by a global electronic shutter operation.SOLUTION: A solid-state imaging device includes a pixel array in which a plurality of pixels are arranged in a plurality of rows and a plurality of columns, and a scanning circuit that performs scanning for sequentially selecting a row from the plurality of rows in which the pixels output signals, wherein a first pixel arranged in a first region of the pixel array outputs a signal based on incident light, and a second pixel arranged in a second region of the pixel array does not output a signal based on incident light. A reset operation starts or ends in a period in which pixels in one row of the pixel array output signals, and the number of times of the reset operation performed in the second pixel is larger than the number of times of the reset operation performed in the first pixel in a period from the start of one scanning to the start of the next scanning.SELECTED DRAWING: Figure 6

A two-dimensional holographic grating exposure apparatus and industrial production method are disclosed. The apparatus consists of a front-end beam splitting and collimating optical path and a rear-end exposure module. In the front-end beam splitting and collimating optical path, the light emitted by the laser (121) is modulated by a power modulator (111), passes through an electronic shutter (131), and is split into a first sub-beam (151), a second sub-beam (152), and a third sub-beam (153) by a beam splitting unit (14). These three beams are deflected, polarized, expanded, and collimated before reaching the first, second, and third apertures, which limit the size and shape of their light spots. The three beams after passing through the apertures are introduced into the rear-end exposure module. The first and third beams pass through the first and second coupling prisms, the substrate material, and the base material, and then intersect with the second beam, which also passes through the substrate material, at the holographic material. The interference of the three beams forms a two-dimensional grating. This apparatus can simultaneously perform two-dimensional grating exposure, simplifying the two-dimensional grating exposure process and improving the efficiency of two-dimensional grating fabrication.

An endoscope control processing device (3) acquires an image signal in units of frames from an endoscope (2) having an imaging element (11). The imaging element (11) has an electronic shutter function for controlling the exposure time. A processor (30a) provided in an endoscope control processing device (3) performs dimming detection on an image signal, calculates a target exposure time value, calculates an electronic shutter control value on the basis of the target value, calculates an actual exposure time value on the basis of the electronic shutter control value, and calculates an exposure time ratio between the actual value and the target value. An image signal of a new frame captured on the basis of the electronic shutter control value is acquired from the endoscope (2), and the gain of the image signal of the new frame is adjusted on the basis of the exposure time ratio.

In a radiotherapy system, therapeutic X-rays are delivered to a target volume, and simultaneously, imaging X-rays are delivered to the target volume for generating image data of the target volume. That is, during an imaging interval in which imaging X-rays are delivered to the target volume, one or more pulses of therapeutic X-rays are also delivered to the target volume. In each pixel of the radiotherapy system's X-ray imaging device, an image signal is accumulated during portions of the imaging interval in which only imaging X-rays are delivered to the target volume, and image signals are prevented from accumulating in each pixel during pulses of therapeutic X-rays.

A toilet seat device according to an embodiment of the present invention is a toilet seat device mounted on an upper portion of a toilet bowl having a bowl portion formed therein for receiving excrement, the toilet seat device comprising: a toilet seat for a user to sit on; a light emitting portion provided with a light emitting element for irradiating light; a light receiving portion provided with a light receiving element for receiving light; and a control portion for controlling the energization of the light emitting element and the application of a voltage to the light receiving element, the control portion performing light receiving control, in which a control instruction to open an electronic shutter is sent to the light receiving element and the light emitting element is energized so as to be able to receive reflected light from feces, and the control portion controls the interval from the start of execution of one light receiving control to the execution of the next light receiving control of the one light receiving control to be greater than 0.2 milliseconds.

The invention discloses a micro spectrometer CCD (Charge Coupled Device) driving circuit system, and particularly relates to the technical field of CCD micro spectrometers, which comprises an FPGA (Field Programmable Gate Array), a USB3.0 master controller CYUSB3014, an analog-to-digital converter AD9826, an operational amplifier AD847, a clock driver LV5609V and an electronic shutter. A plurality of working modes are adopted, the Binning working mode and the full Binning working mode can correspond to a strong signal working scene and a weak signal working scene respectively, the Binning working mode and the full Binning working mode both have the functions of single-frame output and output after multi-frame accumulation, a multispectral imaging observation mode can be achieved in the full-frame working mode, and the electronic shutter has the advantages that the electronic shutter can be automatically opened and closed along with a CCD driving time sequence, so that the imaging precision is improved. And the three working modes can be flexibly selected according to the test environment and the spectrograph, so that the test flexibility and the adaptability of a circuit system are improved.

The present invention discloses a femtosecond laser manufacturing system and manufacturing method of ultra-long steel strip gratings with coordinated control of time and space parameters. The traction roller acts as an active roller and rotates at a spatial angular velocity ω1, driving the steel strip substrate to move horizontally at a uniform speed from the unwinding roller to output; the linear femtosecond laser unit performs local engraving on the steel strip substrate to form a grating scale under the regulation of the electronic shutter time domain switching frequency f; the cleaning unit cleans the grating scale; the winding roller completes the roll storage of the grating scale; the monitoring unit is used for real-time monitoring of the grating manufacturing quality and the outer diameter of the winding; the auxiliary roller system is used to ensure the smooth transmission of the manufacturing system. The present invention realizes the continuous uniform horizontal movement of the ultra-long steel strip substrate with roller system transmission, realizes the ultra-long steel strip grating manufacturing with a linear femtosecond laser controlled by an electronic shutter, realizes the regulation of the scale and accuracy of the steel strip grating structure through the coordinated control of the spatial parameter ω1 and the time domain parameter f, and provides a new technology for the high-precision and efficient manufacturing of ultra-long steel strip gratings.

According to an aspect, a detection device includes: a light source device including light-emitting elements arranged in a planar configuration; a light-transmitting placement substrate on which an object to be detected is to be placed; an electronic shutter having divided areas; and an optical sensor having detection areas arranged in a planar configuration. Each of the detection areas includes one or more photodetection elements. The divided areas in the electronic shutter are switchable between a light-transmitting state and a non-light-transmitting state for each of the divided areas, and the light-emitting elements are switchable between on and off for each of the light-emitting elements. Each of the light-emitting elements, one of the divided areas of the electronic shutter corresponding to the light-emitting element, and one of the detection areas corresponding to the light-emitting element overlap one another, as viewed from the first direction.

A system may include an image sensor, an electronic shutter, a light source, and a lens module. The imaging system may include control circuitry configured to selectively control one or more of the image sensor, the electronic shutter, and the light source. In particular, the electronic shutter may be controlled in synchronization with the image sensor. The electronic shutter may have a maximum transparency during a common time interval for all rows, while all of the rows of imaging pixels in the image sensor are integrating. The electronic shutter may have a minimum transparency while more than one but less than all of the plurality of rows of imaging pixels are integrating. Synchronizing the electronic shutter with the image sensor in this manner may achieve global shutter like performance with a rolling shutter image sensor.

The invention discloses an imaging system with a rolling shutter readout and an electronic shutter. The system may include an image sensor, an electronic shutter, a light source, and a lens module. The imaging system may include a control circuit configured to selectively control one or more of the image sensor, the electronic shutter, and the light source. In particular, the electronic shutter may be controlled in synchronization with the image sensor. The electronic shutter may have a maximum transparency during a common time interval for all rows when imaging pixels of all rows in the image sensor are integrating. The electronic shutter may have a minimum transparency when more than but less than all of the multiple rows of imaging pixels are integrating. In this way, the electronic shutter is synchronized with the image sensor, and a rolling shutter image sensor can be used to achieve global shutter-like performance.

The invention discloses a high-efficiency holographic optical element preparation device and a preparation method thereof, and belongs to the technical field of holography. The preparation device comprises a light source module, a beam combining module, a polarization beam splitter, a reflection module, an exposure control module and a placement rack, the light source module comprises a red laser, a green laser and a blue laser. The electronic shutters respectively located in front of the red laser, the green laser and the blue laser can be controlled to work through the precise electronic timer, the exposure time sequence and duration of red laser, green laser and blue laser can be accurately and independently controlled, and sequence exposure of red, green and blue primary colors and sub-channel time sequence control are achieved. And finally, three-channel high diffraction efficiency and uniformity are realized, and the problems of complex light path, non-uniform efficiency and poor stability in the existing panchromatic HOE preparation are solved, so that a reliable and optimizable technical guarantee is provided for preparing a panchromatic holographic optical element with high three-color diffraction efficiency and good uniformity on the premise of simple process and low cost.

According to the low-power-consumption power-down shutter protection circuit, when a product works normally, a shutter is controlled by a driving signal to complete corresponding opening and closing control, when the product is in abnormal power down or normal power down, the driving signal disappears, and under the combined action of a diode 1, a diode 2, an energy storage capacitor 1 and an energy storage capacitor 2, the power-down shutter is controlled to be opened and closed. The shutter driving chip and the closing control circuit work normally, the shutter can continue to be driven at the moment, under the condition that the driving signal disappears, the closing control circuit outputs a shutter closing signal to the shutter driving chip under the power supply of the energy storage capacitor 2, the shutter is controlled to be closed in a power-down mode, and therefore the safety of the detector is protected. The invention relates to the technical field of electric shutter protection. According to the low-power-consumption power-down shutter protection circuit, no extra logic control chip or power-down detection circuit is needed, meanwhile, damage to a detector after normal / abnormal power down is avoided, power consumption is low, time delay is avoided, multiple tests and actual use are already carried out, the effect is good, and the function is reliable.

An ultra-long steel strip grating manufacturing system using femtosecond laser with spatiotemporal parameters cooperative control, the manufacturing system comprising an unwinding roller, a traction roller and a winding roller, a linear femtosecond laser unit and an electronic shutter being disposed between the unwinding roller and the traction roller and directly above the electronic shutter, a cleaning unit being disposed between the traction roller and the winding roller, a first inspection unit being disposed between the cleaning unit and the winding roller, a second inspection unit being disposed directly above the winding roller, and a plurality of auxiliary roller systems which are driven rollers being disposed along a conveying direction of the steel strip, which achieves a horizontal movement of the steel strip under the electronic shutter, and also achieves a smooth entry of the steel strip into the cleaning unit for cleaning.

The application provides a camera supporting an allometric image migration compensation function and an allometric image migration compensation method. The camera comprises a camera lens, an electronic shutter, a shutter controller, a light measurement module, a lookup table module and a detector module supporting the allometric image migration compensation function. The lookup table module is used for looking up and comparing light value data and determining an electronic shutter exposure time, a shutter width and a shutter speed. The detector module supporting the allometric image migration compensation function is used for converting light signals collected by the camera lens into electrical signals and simultaneously performing electronic allometric image migration compensation according to the electronic shutter exposure time, the shutter width, the shutter speed and task parameters. The camera supporting the allometric image migration compensation function of the application overcomes the defect that the existing aerial camera does not have a compensation function. Moreover, the camera supporting the allometric image migration compensation function of the application can realize aerial allometric image migration compensation without additionally increasing system hardware devices and can reduce the quality, volume, power consumption and cost of an imaging system.

A navigation system includes a star camera having a field of view. The star camera includes a sun shields that selectively block portions of the star camera's field of view, to prevent unwanted light, such as light from the sun or moon, reaching image sensors of the star cameras. Some sun shields include x-y stages or r-θ stages to selectively position a light blocker to block the unwanted light. Some sun shields use positionable partially overlapping orthogonally polarized filters to block the unwanted light. Some sun shields use counter-wound spiral windows that are selectively rotated to block the unwanted light. Some sun shields a curved surface that defines a plurality of apertures fitted with individual mechanical or electronic shutters.

To provide a desired radiation detection device capable of performing global electronic shutter operation and capable of inhibiting a radiation which should not exist from being reflected when imaging a radiation picture with continuous frames.SOLUTION: A radiation detection device comprises: a pixel array in which a plurality of pixels are arranged, the pixels having a photoelectric conversion section for receiving irradiation with radiation to generate electric charge, a charge holding section for holding the electric charge transferred from the photoelectric conversion section, and a floating diffusion section to which the electric charge is transferred from the charge holding section; a reading section for reading pixel signals depending on electric charge existing in floating diffusion sections from the respective pixels; and a signal processing section for processing the read pixel signals. When pixel signals read from an arbitrary pixel of the pixel array in continuous two frames exceed a predetermined value, the signal processing section modifies a pixel signal read from any pixel in a frame preceding temporally of the continuous two frames to a smaller correction value.SELECTED DRAWING: Figure 7

To reduce flicker stripes when imaging is performed by using an electronic shutter, regardless of a shutter speed and the size of a flicker light source in a depth of field.SOLUTION: In an imaging apparatus 101 comprising an image pick-up device 102 and a control unit 106 that controls the drive of the image pick-up device 102, the image pick-up device 102 has a plurality of pixels 202 that are arranged in a matrix, and a plurality of vertical signal lines 205A-205F that are connected for every column of the plurality of pixels 202. The vertical signal lines 205A-205F are connected respectively to pixels on a plurality of columns, of the plurality of pixels 202. The control unit 106 performs accumulation of electric charges in the plurality of pixels 202 for every group of the vertical signal lines 205A-205F for the same accumulation time with a shift by a constant time, and subsequently, performs control of reading out pixel signals from the plurality of pixels 202 at the same scanning speed for every group of the vertical signal lines 205A-205F.SELECTED DRAWING: Figure 5

To provide a setting method of a shutter stop position which can accurately set a stop position of a shutter, and to provide an electric shutter.SOLUTION: A setting method of a shutter stop position is a method for setting a stop position of a shutter 7 in an electric shutter 1 for opening / closing the shutter 7 by a tubular motor, and includes: a first step of closing and moving the shutter 7, comparing a change rate of a current flowing in the tubular motor with a first threshold value, and stopping the rotation of the tubular motor based on the comparison result; a second step of opening and moving the shutter 7 after the first step; and a third step of, after the second step, closing and moving the shutter 7 at a moving speed lower than a moving speed of the shutter 7 in the first step, comparing a change rate of the current flowing in the tubular motor with a second threshold value, and setting the stop position of the shutter 7 based on the comparison result.SELECTED DRAWING: Figure 5

Pellicle inspection device for extreme ultraviolet lithography masks comprises inspection light source module to generate light source with wavelength in extreme ultraviolet band and equipped with extreme ultraviolet irradiation time control electronic shutter and light source transmission system; sample platform module in vacuum chamber to fix, move and rotate sample to switch between different performance tests of pellicle and achieve irradiation of extreme ultraviolet light source at different positions and angles of incidence on pellicle; module for detecting impact of contaminants on mask imaging to study impact of different types and sizes of contaminants below 50 μm and distance between pellicle and mask on mask imaging and determine optimal distance; module for measuring transmissivity, transmittance uniformity, and reflectivity of pellicle to measure optical properties of pellicle at different angles of incidence and study impact of chemical changes of pellicle on optical properties.

To obtain an imaging signal by a rolling electronic shutter system and an imaging signal by a global electronic shutter system within one frame.SOLUTION: An imaging element includes a plurality of pixels arranged in row and column directions in a pixel area and generating signals based on photoelectrically converted charges, and a drive circuit unit that controls the plurality of pixels so as to read out the signals from a plurality of first pixels arranged in the row and column directions in a first area of the pixel area by a global electronic shutter system, and to read out the signals from a plurality of second pixels arranged in the row and column directions in a second area of the pixel area by a rolling electronic shutter system.SELECTED DRAWING: Figure 11

A system includes an electronic device having an image sensor that performs shooting by controlling an exposure period of performing photoelectric conversion on incident light and accumulating charge by using electronic shutter and a notification apparatus capable of communicating with the electronic device. Information indicating at least either of an exposure start timing and an exposure end timing of the image sensor is transmitted from the electronic device to the notification apparatus, and notification is performed in the notification apparatus according to at least either of the exposure start timing and the exposure end timing based on the information transmitted from the electronic device.