Abstract: A projection method includes detecting a first distance between a projector and a first portion of a projection surface, detecting a second distance between the projector and a second portion of the projection surface, detecting a third distance between the projector and a third portion of the projection surface, projecting image light in a first visual aspect according to the first distance onto the first portion by using the projector, projecting image light in a second visual aspect according to the second distance onto the second portion by using the projector, and projecting image light in a third visual aspect based on the first and second visual aspects onto the third portion by using the projector when the third distance is longer than the first distance but shorter than the second distance.

Abstract: An electronic apparatus according to example embodiments may include a flexible display, a frame part configured to support the flexible display, and a rear cover attached to an outer surface of the frame part to cover at least a portion of the frame part, wherein the rear cover is disposed to be detachable from the frame part based on an electrical signal. Other various embodiments are also possible.

Abstract: An electronic device includes a transparent first display panel, a second display panel and a processor electrically connected to the two panels. The first display panel is movable with respect to the second display panel. The processor is configured to switch between a plurality of display modes based on relative positioning of the two panels and to provide video signals to the two panels based on a current display mode. When the first display panel is parallel to the second display panel and faces a display area of the second display panel, the processor executes a stereoscopic display mode. When an angle between the two panels is between 0 and 180 degrees, exclusive, the processor executes an augmented reality display mode. When the display areas of the two panels are oriented away from each other, the processor executes a dual display mode.

Abstract: A transparent conductive gas barrier laminate according to the present disclosure includes a transparent gas barrier film and a transparent conductive layer in this order from outside toward inside. In the laminate, the transparent gas barrier film has a b* value of more than 0 in a L*a*b* color system, and the transparent conductive layer contains a conductive polymer and has a b* value of less than 0 in the L*a*b* color system.

Abstract: The present disclosure provides a display panel and a method for manufacturing the same, and a display device. The display panel includes: a substrate; a pixel unit array disposed on one side of the substrate, wherein the pixel unit array comprises a plurality of pixel units, at least one of the plurality of pixel units comprising an anode layer, a cathode layer, and a light emitting layer located between the anode layer and the cathode layer, the cathode layer defining an opening configured to transmit a light emitted from the light emitting layer; and at least one sensor disposed on one side of the pixel unit array away from the substrate and configured to detect a light transmitted through the opening.

Abstract: The present disclosure provides a display panel and a method for manufacturing the same, and a display device. The display panel includes: a substrate; a pixel unit array disposed on one side of the substrate, wherein the pixel unit array comprises a plurality of pixel units, at least one of the plurality of pixel units comprising an anode layer, a cathode layer, and a light emitting layer located between the anode layer and the cathode layer, the cathode layer defining an opening configured to transmit a light emitted from the light emitting layer; and at least one sensor disposed on one side of the pixel unit array away from the substrate and configured to detect a light transmitted through the opening.

Abstract: A system and method provides for generating an output display on a display device based on at least one ambient condition. The method and system includes a display device or a component associated with a display device that provides for detecting an ambient condition using one or more environmental sensors. The method and system includes analyzing the ambient condition to determine ambient condition factors and retrieving visual display content from at least one visual content database using the ambient condition factors. Therein, the method and system provides the visual display content to the display device so the output display compliments the ambient condition.

Abstract: The present disclosure discloses a display driving device and a display device including the same, allowing high-speed data communication to be supported by controlling the length of a data packet. The display device may include a timing controller configured to transmit a communication signal, and a source driver connected to the timing controller through a communication link and configured to receive the communication signal. The source driver may receive the communication signal having a format of preamble data, start data, configuration data, end data, and configuration completion data from the timing controller in a configuration mode, and the configuration data may include a header defining a length of a data packet.

Abstract: A film antenna according to an embodiment of the present invention includes a dielectric layer, an antenna pattern including a mesh structure on a top surface of the dielectric layer, and a dummy pattern on a top surface of the dielectric layer. The dummy pattern includes the same mesh structure as that of the antenna pattern. Optical properties are improved by the same mesh structure of the antenna pattern and the dummy pattern.

Abstract: A mobile terminal and a control method therefor are disclosed. The mobile terminal includes a body, an input unit configured to receive a user input, a display coupled to the body to vary a display region viewed from a front of the body according to switching between an enlarged display mode and a reduced display mode, and a controller. The controller controls the display to be extended by a first region upon receiving a first signal, and controls the display to activate a touch function of the first region after activating an output function of the first region, based on extension of the display by the first region.

Abstract: A display panel and a display apparatus are provided. The display panel includes a display region and a non-display region surrounding the display region. The non-display region includes a step region, a left border and a right border that are adjacent to the step region, and an upper border arranged opposite to the step region. The left border, the right border, the upper border, and the step region surround the display region. The left border and the right border each include an encapsulation region. The encapsulation region includes a sealant and a reflective metal layer that are at least partially overlapped with each other. The step region includes a ground metal line, and the ground metal line is connected to the reflective metal layer through an electrostatic consumption resistance portion.

Abstract: In one embodiment, a method includes accessing data corresponding to one or more settings of a network-enabled device; and determining one or more of the settings corresponds to an enhanced security level. Each of the one or more settings are activated by a corresponding confirmation touch gesture. The method also includes detecting a number of touch inputs; and determining the number of touch inputs correspond to a confirmation touch gesture. The confirmation touch gesture includes: an initial touch input; and a confirmation touch input located at a particular area of a touch-sensitive display that is located at least a pre-determined distance from an end location of the initial touch input. The method also includes sending data corresponding to one or more of the settings activated by the confirmation touch gesture in response to determining the number of touch inputs correspond to the confirmation touch gesture.

Abstract: An apparatus may include a touch sensor, a touch region of the touch sensor that is free of sense electrodes, a first peripheral region of the touch sensor and a second peripheral region of the touch senor and the touch region is located between the first peripheral region and the second peripheral region, a first sense electrode is located in the first peripheral region, a second sense electrode is located in the second peripheral region.

Abstract: An electronic device includes a touch-sensitive display, one or more processors, and one or more motion sensors. The touch-sensitive display detects touch input at a surface of the touch-sensitive display, with the touch input identifying a user input command requesting performance of a control operation. The one or more motion sensors determine whether the electronic device moves in three-dimensional space while the touch input is occurring. The one or more processors preclude execution of the control operation in response to the touch input where the electronic device moved in the three-dimensional space while the touch input was occurring, thereby preventing control operations in response to inadvertent touching when the electronic device is being picked up or moved.

Abstract: A touch display module, a controlling method, a panel and a display device are provided in embodiments of the disclosure, all belong to the technical field of display technology, the touch display module including: a touch circuit, an auxiliary circuit, a base substrate, a plurality of electrode blocks and a plurality of electrode lines; the touch circuit is configured to provide the plurality of electrode lines with respective display signals at a display stage, and to provide the plurality of electrode lines with respective touch signals at a touch stage; and the auxiliary circuit is configured to provide the plurality of electrode lines with respective display signals at the display stage, and to stop providing the plurality of electrode lines with the respective display signals at the touch stage.

Abstract: A touch display device including scan lines, data lines, metal common lines, pixel sets, a common electrode layer, light-shielding patterns and touch electrode patterns is provided. Each metal common line is located between two adjacent scan lines. Each pixel set is located between two adjacent metal common lines. The common electrode layer includes common electrode portions disposed corresponding to the metal common lines. A vertical projection of each metal common line is completely located within a vertical projection of the corresponding common electrode portion. The light-shielding patterns are disposed corresponding to the metal common lines, and a vertical projection of each metal common line and the scan lines adjacent thereto is completely located within a vertical projection of the corresponding light-shielding pattern.

Abstract: In one embodiment, a method includes outputting a first current associated with a first electrode track of a self-capacitance touch sensor. The method also includes outputting a second current associated with a second electrode track of the self-capacitance touch sensor. The method also includes measuring a voltage associated with a difference between the first and second currents and determining a position of an object relative to the self-capacitance touch sensor based on the voltage.

Abstract: A tactile presentation device includes a touch surface fixed in orientation, an actuator configured to vibrate the touch surface along one axis within the plane of the touch surface, and a controller configured to control vibration of the actuator along the one axis to present tactile stimulus to a finger in contact with the touch surface. The controller is configured to control the actuator in such a manner that direction to start vibration for presenting tactile stimulus to the finger is within a range from minus 43° to plus 43° with respect to a direction of gravity projected on the touch surface or the opposite direction thereof.

Abstract: A projection display device includes an imaging element, a light source, a light valve that modulates light from the light source and emits modulated light in a prescribed polarization state, and an imaging optical system. The imaging optical system includes a first optical system that is used in common in projection and imaging, a second optical system that is used only in projection, a third optical system that is used only in imaging, and a separation member that separates an optical path from the second optical system toward the first optical system from an optical path from the first optical system toward the third optical system. The first optical system comprises a quarter wave plate and a polarizer arranged in a state of transmitting the light emitted from the light valve.

Abstract: A flat panel display having an integrated touch screen panel directly formed on a sealing thin film is disclosed. In the display, sensing lines of the touch screen panel are formed to extend to a substrate of the display panel, on which organic light emitting elements are formed, so that the touch screen panel and the display panel are connected to a flexible printed circuit board, thereby simplifying manufacturing processes and decreasing product cost.

Abstract: A projection display device includes an imaging element, a light source, a light valve that modulates light from the light source and emits modulated light, and an imaging optical system. The imaging optical system includes a first optical system that is used in common in projection and imaging, a second optical system that is used only in projection, a third optical system that is used only in imaging, and a separation member that separates an optical path from the second optical system toward the first optical system from an optical path from the first optical system toward the third optical system. The third optical system includes a first light shielding member that is arranged in the vicinity of a stop position of the third optical system and shields a part of a luminous flux.

Abstract: Provided are a method and a terminal for unlocking a locked mode of the terminal. The terminal may include a display to display a home screen in an unlocked mode and a lock screen in a locked mode, an appearance of the lock screen being the same as a home screen, a user interface to receive inputs to unlock the lock screen, and a controller configured to unlock the lock screen based on the received inputs. The input may be received when the lock screen is displayed on the display in the lock mode, the input having a prescribed pattern. When the prescribed pattern of the input corresponds to a previously stored unlocking pattern, the lock screen may be unlocked to display the home screen.

Abstract: A coupled display device includes a first display unit and a second display unit arranged adjacent to each other and coupled. The first display unit includes a first display portion and a first frame portion including two first linear sections and two second linear sections perpendicular to the first linear sections. The second display unit includes a second display portion and a second frame portion including two third linear sections and two fourth linear sections. The first display unit is set in a first position. The second display unit is set in a second position that is inverted from the first position. The first linear sections and the third linear sections extend in an arrangement direction in which the first display unit and the second display unit are arranged. The second linear sections and the fourth linear sections extend in a direction perpendicular to the arrangement direction.

Abstract: A terminal includes a cover, a display module, and a metal middle frame. The display module is located between the cover and the metal middle frame, and the metal middle frame is grounded. The terminal further includes a conducting layer, where the conducting layer is attached to a lower surface of the display module, and at least one gap exists between the conducting layer and the metal middle frame. The conducting layer, the metal middle frame, and the at least one gap form at least one capacitor, where a capacitance change of the at least one capacitor reflects a magnitude of at least one pressure acted on the cover.

Abstract: A wireless communication device has a display device and a transmitter that wirelessly transmits a wireless (e.g., NFC) signal from an antenna. The antenna is positioned such that the display device may be between the antenna and another wireless communication device that is to receive the signal, and the display device may attenuate such signal. A reflector of the display device is patterned with small gaps in order to limit the loop sizes of eddy currents that are induced by the wireless signal, thereby reducing parasitic power consumption of the reflector to the wireless signal. Thus, the presence of the gaps in the reflector improves the transparency of the display device to the wireless signal without significantly affecting the performance of the reflector in sinking heat and reflecting light.

Abstract: A mobile terminal having a touch screen and a method present a user interface in the mobile terminal having a touch screen. The method includes: detecting a touched area corresponding to a touch when the touch is sensed in the touch screen; and executing different functions according to whether the detected touched area is equal to or greater than a preset area threshold. Various touch inputs are sensed through a touch screen in the mobile terminal, and the mobile terminal and method present user interfaces corresponding to the respective touch inputs.

Abstract: A method includes displaying an on-screen ruler in a sketch area in response to a predefined input. The on-screen ruler has a first edge and an interior portion delineated by the first edge. The method further includes, in response to detecting a first touch input directed to the first edge of the on-screen ruler, rendering a line in the sketch area in accordance with the first edge of the on-screen ruler. The method further includes, in response to detecting a second touch input directed to the first edge of the on-screen ruler, adding fill content in a first portion of the sketch area that corresponds to regions touched by the second touch input on the touch-sensitive surface and that is delineated by the first edge of the on-screen ruler, such that the first portion of the sketch area is confined by the first edge or the line.

Abstract: The embodiment provides a display device including an array substrate, an opposite substrate, a plurality of micro light-emitting diodes and a plurality of bank structures. The opposite substrate is disposed opposite to the array substrate. The micro light-emitting diodes are arranged in an array on the array substrate, wherein the micro light-emitting diodes are electrically connected to the array substrate. The bank structures are located between the array substrate and the opposite substrate, wherein the bank structures form a plurality of accommodating regions, and one of the micro light-emitting diodes is located in one of the accommodating regions. A height of the bank structures is more than or equal to a height of the micro light-emitting diodes.

Abstract: A display substrate according to an embodiment of the present disclosure comprises a substrate and a plurality of pixel units on the substrate, at least one of the plurality of pixel units comprising a light-emitting unit, a photosensitive unit for detecting light emitted by the light-emitting unit, and an interlayer insulating layer between the photosensitive unit and the light-emitting unit, wherein the interlayer insulating layer comprises a groove, an orthogonal projection of which on the substrate does not coincide with an orthogonal projection of the photosensitive unit on the substrate, and the light-emitting unit covers the groove.

Abstract: A display device includes: a first substrate; a display functional layer; a plurality of first electrodes; a light guide plate; a plurality of second electrodes; and a controller configured to control the first and second electrodes. The first substrate, the display functional layer, the first electrodes, the light guide plate, and the second electrodes are stacked in this order. The controller performs operations during a plurality of display periods to display an image, during a first sensing period, and during a second sensing period in a time-division manner. The first electrodes are supplied with a first drive signal and an electromotive force caused by electromagnetic induction is generated in the second electrodes during the first sensing period. The first electrodes are supplied with a second drive signal to generate electrostatic capacitance between the first electrodes and the second electrodes during the second sensing period.

Abstract: An electronic paper display unit includes a protective case, which is made of a transparent material, a display, which is installed in the protective case, is powered to display desired image information, and includes a plurality of divided regions, and a control module, which is electrically connected with the display, and includes a first mode transmitting a divided mode signal such that many pieces of image information are independently displayed on the respective divided regions and a second mode transmitting an integrated mode signal such that one piece of image information is displayed throughout the overall divided regions. Further, a mobile communication terminal can visually display various pieces of image information thereon according to selection of a user.

Abstract: A processing device determines two or more adjacent teeth in a virtual model, the two or more adjacent teeth include a first tooth adjacent to a second tooth in the virtual model. The processing device inserts a first virtual filler in the virtual model between the first tooth and the second tooth. The processing device selects points in the virtual model. A processing device transforms the plurality of points into a voxel volume comprising a plurality of voxels. A processing device performs a smoothing operation on the voxel volume. A processing device subsequent to performing the smoothing operation on the voxel volume, determines a geometry of an updated virtual filler by transforming a surface of the smoothed voxel volume into a polygonal mesh.

Abstract: A presentation system capable of detecting one or more gestures and contacts on a touch sensitive display. The presentation system can display indicia of such contacts, such as when a user writes with a fingertip, and can remove or alter such indicia responsive to other gestures and contacts. The system can accurately distinguish between types of gestures detected, such as between a writing gesture and an erasing gesture, on both large and small touch sensitive displays, thereby obviating the need for a user to make additional selective inputs to transition from one type of gesture to another.

Abstract: The present disclosure provides a photosensitive circuit, a method of driving a photosensitive circuit and a display device. The photosensitive circuit includes: a first photosensitive transistor, configured to be turned on in response to a signal of a first node, to transmit a current flowing through the first photosensitive transistor to a second node and generate an induced electrical signal based on an incident light; a second photosensitive transistor, configured to be turned on in response to a first scan signal, to transmit a voltage of the first scan signal to the first node and generate an induced electrical signal based on an incident light; and a first switch, configured to be turned on in response to the first scan signal, to transmit a signal of the second node to a reading terminal. Threshold voltages of both photosensitive transistors are negatively correlated with an intensity of the incident light.

Abstract: A display apparatus with a touch detection function that can improve detection characteristics is provided. The display apparatus includes: a pixel array having a plurality of pixels arranged in a matrix form; a plurality of signal lines arranged along each column in the pixel array, the signal lines supplying an image signal to a plurality of pixels arranged along the corresponding column; and a plurality of drive electrodes arranged in parallel with each other in the pixel array, the drive electrodes supplying a drive signal to the plurality of pixels in image display. When an externally-approaching object is detected by using a magnetic field, a coil clock signal for generating magnetic field is supplied to a first drive electrode arranged in the pixel array, and a magnetic field from the externally-approaching object is detected by second drive electrodes intersecting with the first drive electrode when seen in a plan view.

Abstract: A light detection circuit and a detection method thereof, and a light detection device are provided. The light detection circuit including a pixel circuit, a control unit, a counter, and a processor. The pixel circuit includes a phototransistor, a switching transistor, and an output sub-circuit. A first terminal of the output sub-circuit, a first electrode of the phototransistor, and a first electrode of the switching transistor are coupled to a first node, a gate of the phototransistor is coupled to a gradual change signal input line, a gate of the switching transistor is coupled to a scan line, and a second electrode of the switching transistor is coupled to the counter. The control unit is configured to control the counter to start counting under the control of a scan signal and a synchronization signal.

Abstract: In some implementations, an electronic device includes a display stack to display content. The display stack can include a number of substrates coupled using a liquid optically clear adhesive (LOCA). In some implementations, the LOCA can have a modulus of elasticity of no greater than 80,000 Pa. Additionally, the display stack can be formed using a process that includes applying an external force to the display stack by placing the display stack between two fixtures. In an implementation, the external force can be applied while heating the display stack at a temperature of at least 60° C. and cooling the display stack according to a particular cooling rate.

Abstract: A display device with high resolution is provided. A display device with high display quality is provided. A display device includes a display portion, a first terminal group, and a second terminal group. The display portion includes pixels, scan lines, and signal lines. The first terminal group and the second terminal group are apart from each other. The first terminal group includes first terminals and the second terminal group includes second terminals. The scan lines are each electrically connected to the pixels arranged in a row direction. The signal lines are each electrically connected to the pixels arranged in a column direction. The signal lines are each electrically connected to the first terminal or the second terminal. The display portion includes a first region where the signal lines electrically connected to the first terminals and the signal lines electrically connected to the second terminals are mixed.

Abstract: The present disclosure relates to an array substrate, a liquid crystal display panel, and a display apparatus. In an embodiment, an array substrate includes: a plurality of pixel electrodes arranged in an array, data signal lines each connected to a corresponding one of the pixel electrodes, and touch control signal lines extending in a same direction as the data signal lines. Every two ones of the pixel electrodes adjacent to each other in a row direction constitute an electrode set. Each of the data signal lines is located in a gap between two adjacent electrode sets in a column direction, and the touch control signal lines are each disposed between one of the data signal lines and either of two adjacent electrode sets located adjacent to the one data signal line in the row direction.

Abstract: A touch electrode layer and a touch panel are provided. The touch electrode layer includes a first touch electrode and a second touch electrode. At least a part of the first touch electrode is surrounded by the second touch electrode so that the first touch electrode has a first touch electrode portion surrounded by the second touch electrode, and the first touch electrode portion surrounded by the second touch electrode is of a circular or oval shape; a first gap is formed between the first touch electrode portion and the second touch electrode which surrounds the first touch electrode portion; and the first touch electrode and the second touch electrode are arranged in a same layer.

Abstract: Embodiments of the present invention provide an array substrate and a manufacturing method thereof and a touch display device. The array substrate comprises multiple data lines, multiple gate lines and multiple thin film transistors. The data lines and the gate lines intersect with each other in different planes to divide the array substrate into multiple pixel units, in each of which a thin film transistor is provided, wherein the array substrate further comprises multiple first touch sensing electrodes and multiple second touch sensing electrodes. The first touch sensing electrodes are provided below active regions of the thin film transistors and also serve as metal shielding layers for blocking light emitted by a backlight source. The first touch sensing electrodes and the second touch sensing electrodes intersect with each other in different planes, and capacitances are formed at intersections of the first touch sensing electrodes and the second touch sensing electrodes.

Abstract: Disclosed are a three-dimensional (3D) touch control structure and a display device. The three-dimensional (3D) touch control structure includes: a plurality of magnetic field generating components arranged into an array, and a plurality of electromagnetic inducting components in one-to-one correspondence and arranged in different layers to the magnetic field generating components; wherein a distance exists between the magnetic field generating components and the corresponding electromagnetic inducting components, and the magnetic field generating components are configured for generating magnetic fields and the electromagnetic inducting components are configured for changing in induced potential during touch control.

Abstract: A display substrate is disclosed. The display substrate includes a plurality of pressure sensitive units each including an input electrode electrically connected to one of a plurality of signal input lines, an output electrode electrically connected to one of a plurality of signal output lines, and a pressure sensitive element operable to, responsive to a voltage difference applied across the input electrode and the output electrode and a pressure caused by pressing, generate a current signal indicative of a magnitude of the pressure. Also disclosed are a touch panel and a display apparatus.

Abstract: The present disclosure provides an image sensor panel and a method for capturing graphical information using the image sensor panel. In one aspect, the image sensor panel includes a substrate and a sensor array on the substrate, the sensor array including a plurality of photosensitive pixels. The substrate includes a first region defined by the sensor array and a second region other than the first region. The second region is optically transparent and has an area greater than that of the first region.

Abstract: A display substrate has first and second conductive layers separated from one another by an insulation layer. The first and second conductive layers are used to integrally form on the display substrate, pixel units in a relatively central display area of the substrate and integrated gate driving circuitry as well as associated wirings thereof in one or more peripheral areas. The first and second conductive layers are covered by a first protection layer made of a first electrically insulative material. A second and supplementing protection layer is provided on top of the first protection layer. The supplementing protection layer (buffer layer) is formed of a material different from that of the first protection layer so as to provide supplemental resistance against corrosive chemical agents and supplemental resistance against formation of cracks.

Abstract: The present invention provides an array substrate and a manufacturing method thereof. The array substrate includes: a backing plate, a TFT layer arranged on the backing plate, a protective layer covering the backing plate and the TFT layer, a color resist layer arranged on the protective layer, an organic planarization layer set on and covering the color resist layer and the protective layer, and a BPS light-shielding layer arranged on the organic planarization layer. The BPS light-shielding layer includes: a black matrix and a main photo spacer and a sub photo spacer arranged on the black matrix. The organic planarization layer is formed with a first recess in an area thereof that corresponds to at least a part of the black matrix and the first recess is filled up with the black matrix.

Abstract: An array substrate, an electrical aging method, a display device and a manufacturing method thereof. The array substrate includes: pixel circuits disposed in a display area, where each of the pixel circuits is disposed in a corresponding pixel region of the display area; a scanning drive circuit disposed outside the display area; a plurality of scanning-line groups for connecting the pixel circuits to the scanning drive circuit; a voltage input interface disposed outside the display area; and a wire group for connecting the plurality of scanning-line groups to the voltage input interface. An insulating layer is disposed between the wire group and the scanning drive circuit.

Abstract: An input detection device includes a plurality of drive electrodes, a first wiring that supplies a first voltage to the plurality of drive electrodes, and a second wiring that supplies a second voltage different from the first voltage, to the plurality of drive electrodes. Input detection through an electromagnetic induction method is performed through a magnetic field generated by supplying the first voltage and the second voltage to the plurality of drive electrodes, and the first voltage and the second voltage supplied to the first wiring and the second wiring are direct-current voltages.

Abstract: A floating touch display apparatus is provided. The apparatus comprises a display panel and a touch identifying unit. The display panel comprises: a plurality of pixels, each pixel of the display panel including n sub-pixels, and the n sub-pixels respectively emitting light having wavelengths in a first to an n-th wavebands to display and image; a plurality of light-emitting units, each light-emitting unit being configured for emitting light having a wavelength in a (n+1)-th waveband, and wavelength ranges of the light in the first to the (n+1)-th wavebands being not coincide; a plurality of light-receiving units, each light-receiving unit being configured for receiving the light in the (n+1)-th waveband and generating a touch identifying signal. The touch identifying unit identifies a floating touch action according to the touch identifying signal generated by the light-receiving unit.

Abstract: An image generating apparatus is provided with a first light source and a second light source, an image sensor, a mask including a light-transmitting part and a light-blocking part, and a dark image processing unit. The image sensor acquires a first image of the material when illuminated by the first light source, and acquires a second image of the material when illuminated by the second light source. The image sensor includes a first pixel region and a second pixel region. The light-blocking part is positioned between the first pixel region and the first light source. The light-blocking part is positioned between the first pixel region and the first light source. The dark image processing unit uses first pixel information corresponding to a first pixel region in the first image and second pixel information corresponding to a second pixel region in the second image to generate a third image.