Abstract: This encoding device comprises: a downmix circuit that switches mixing processing according to the characteristic of an input stereo signal to generate either a first stereo signal or a second stereo signal obtained by mixing processing of a left channel signal and a right channel signal; a first encoding circuit that encodes the first stereo signal; and a second encoding circuit that encodes two signals included in the second stereo signal. The second encoding circuit performs monaural encoding on the basis of the encoding mode of the first encoding circuit in a first section in which switching from the first stereo signal to the second stereo signal is performed and/or a second section in which switching from the second stereo signal to the first stereo signal is performed.

Abstract: A position information relay device interposed between a network device and an apparatus includes: a position information recognizer which recognizes position information of the apparatus; and a position information relay which receives a communication packet transmitted by the apparatus to the network device, includes the position information in the communication packet received, and transmits the communication packet including the position information to the network device.

Abstract: Provided is a wavelength converter including a phosphor ceramic containing a first phosphor that emits fluorescence due to a parity-forbidden transition, and a phosphor part containing a second phosphor that emits fluorescence due to a parity-allowed transition. A main surface of the phosphor ceramic has a concave and convex structure including a plurality of convex parts and a plurality of concave parts. The phosphor part is arranged inside the plurality of concave parts in the phosphor ceramic. Also provided is a light emitting device including the wavelength converter, and a solid-state light source that emits light with which the wavelength converter is irradiated and which has a light emission peak within a wavelength range of 400 nm or more and less than 500 nm.

Abstract: A stator includes: a plurality of stator blocks; a plurality of coils; and a supporter supporting the plurality of stator blocks. Each of the plurality of stator blocks includes: a yoke portion located at its outermost perimeter; and a teeth portion protruding from an inner peripheral surface of the yoke portion. The yoke portion has a width dimension along the circumferential direction, and the width dimension of the yoke portion is greater than a width dimension of the teeth portion along the circumferential direction. The supporter is closed in the circumferential direction. The supporter holds the plurality of stator blocks such that the plurality of stator blocks are housed in an interior of the supporter. The supporter has an inner peripheral surface in contact with at least an outer peripheral surface of the yoke portion of each of the plurality of stator blocks.

Abstract: A battery includes: an electrode layer; a counter electrode layer, which is a counter electrode for the electrode layer; a solid electrolyte layer between the electrode layer and the counter electrode layer; and an electrode current collector electrically coupled to the electrode layer. The solid electrolyte layer includes a first region containing a first solid electrolyte material and a second region containing a second solid electrolyte material. The first region is positioned within a region where the electrode layer and the counter electrode layer face each other. Moreover, a second density, which is of the second solid electrolyte material in the second region, is higher than a first density, which is of the first solid electrolyte material in the first region.

Abstract: A server device displays on a user terminal a profile setting screen that allows a user to enter information on the user's needs regarding battery replacement, and in response to the user's entry through the screen, acquires profile information (setting information) on the user's needs. When a specific event occurs (i.e., provision of information on a suitable battery station or an alert of battery replacement necessity), the server device displays on the user terminal a notification screen (station screen or alert screen) for notification of the event, generated based on the profile information.

Abstract: A sensor includes a complex-transfer-function calculator that calculates a complex transfer function from received signals, a reflection-coefficient calculator that calculates a reflection coefficient using a complex transfer function when an object to be detected is arranged at one of L positions and an ideal complex transfer function which is a theoretical value for the position at which the object to be detected is arranged, various normalizers that calculate a normalized reflection coefficient by normalizing the reflection coefficient, a reflection-coefficient interpolator that calculates an interpolated reflection coefficient by interpolation calculation of the reflection coefficient using the normalized reflection coefficient for each coordinates used in position estimation of the object to be detected, and a position estimator that corrects the position estimation, using a steering vector and the interpolated reflection coefficient that are determined based on the position of each of the transmitting a

Abstract: In the present invention, a head connector comprises an optical axis adjustment unit that adjusts the optical axis of a laser beam emitted from a tip of an optical fiber cable, and a spread angle adjustment unit that adjusts the spread angle of emitted light. The optical axis adjustment unit comprises an operation unit configured to be operable from a lateral-surface side of the head connector, and a movement unit that moves a fiber holder within a plane orthogonal to the optical axis of the emitted light in response to an operation of the operation unit. The spread angle adjustment unit comprises an operation unit provided to an insertion unit to be inserted into a laser head, and a movement unit that moves a lens in response to the operation of the operation unit.

Abstract: A fusion protein obtained by fusing a ferredoxin-thioredoxin reductase and thioredoxin via a linker peptide. The linker peptide includes glycine (G) and serine (S).

Abstract: An input interface acquires a first distance image including a plurality of pixels, each of the plurality of pixels indicating a distance value from an image capture device to each point of an object. An image divider divides the first distance image into a plurality of pixel groups based on the distance values of the pixels, such that each of the plurality of pixel groups includes pixels having distance values falling within one of a plurality of distance intervals different from each other. A noise filter individually processes the plurality of pixel groups using a plurality of filter parameters different for the plurality of pixel groups, to reduce noises in the plurality of pixel groups. An image combiner combines the plurality of pixel groups processed by the noise filter, with each other, to generate a second distance image.

Abstract: Provided is a non-aqueous electrolyte secondary, rile non-aqueous electrolyte secondary battery according to one mode of the present disclosure comprises an electrode body in Which a band-form positive electrode and a band-forth negative electrode are wound with a separator interposed therebetween, an electrolytic liquid, and an exterior body that accommodates the electrode body and the electrolytic liquid. The negative electrode has a negative electrode current collector, and a negative electrode mixture layer that is formed on the surface of the negative electrode current collector and that contains a negative electrode active material and an electroconductive agent.

Abstract: A server device acquires profile information (setting information) on user's needs regarding battery replacement from a user terminal, and analyzes historical information on battery replacement at each station to generate an unavailability index representing a degree of unavailability of battery lease. When a specific event occurs (i.e., information on a suitable battery station or an alert of battery replacement necessity is provided), a user terminal displays a notification screen (station screen or alert screen) for notification of the event, generated by the server device based on profile information and an unavailability index.

Abstract: A sensor receives M reception signals including reflection signals reflected by a living body; extracts a living-body component transfer function matrix from first complex transfer functions and second complex transfer functions, the first complex transfer functions being obtained by recording an M×N complex transfer function matrix including complex transfer functions in time series, from M reception signals, the complex transfer functions each indicating characteristics of propagation between a corresponding one of transmission antenna elements and a corresponding one of reception antenna elements, the second complex transfer functions being obtained by estimating and recording M×N complex transfer functions in a second period, and outputting a position at which a spectrum function indicating a likelihood that a living body is present indicates a local maximum value, using a correlation matrix based on the living-body component complex transfer function matrix and a steering vector corresponding to each of

Abstract: Provided is an inorganic structure including a plurality of inorganic particles; and a binding part that covers a surface of each of the plurality of inorganic particles and binds each of the plurality of inorganic particles together. The binding part contains: an amorphous compound containing at least one of aluminum or titanium, oxygen, and one or more metallic elements; and a plurality of fine particles having an average particle size of 100 nm or less. The plurality of inorganic particles has an average particle size of 1 ?m or more, and the plurality of inorganic particles has a volume percentage of 30% or more.

Abstract: Provided is an optical filter including: a matrix including an inorganic substance having a water solubility of 0.4 g/100 g-H2O or less; and a wavelength selective absorption material dispersed in the matrix. The optical filter absorbs an optical component having a wavelength of any band in a target wavelength band of 0.8 to 20 ?m. A temperature at which a mass reduction rate of the wavelength selective absorption material is 10% by mass when heated in air from 100° C. at a rate of 10° C./min is 900° C. or less. An apparent density of the optical filter relative to a true density of the matrix is 70% or more. In the target wavelength band, a wavelength bandwidth where a linear transmittance per 1 mm thickness of the optical filter is 30% or more is 50 nm or more.

Abstract: Provided is an inspection device including: a light source including a phosphor; and a photodetector, and detecting, using the photodetector, reflected light of the inspection light reflected by the inspection object. A spectral distribution of the inspection light has at least one maximum value derived from fluorescence emitted by the phosphor, and the maximum value is within a wavelength range of 600 nm or more and 750 nm or less. When Pmax is set as a spectral intensity at the maximum value where the spectral intensity is largest at the at least one maximum value, a largest value of the spectral intensity in a wavelength range longer than 750 nm is 20% or more of Pmax and less than Pmax, and the spectral intensity within a wavelength range of 500 nm or more and 550 nm or less is less than 20% of Pmax.

Abstract: A howling suppressing device includes: an adaptive filter that estimates an acoustic feedback characteristic representing a characteristic of an acoustic feedback sound reaching a microphone from a speaker by defining an output signal to the speaker as a reference signal, and eliminates the acoustic feedback sound from an input signal obtained via the microphone by using the estimated acoustic feedback characteristic; an estimator that estimates, on the basis of the acoustic feedback characteristic, an acoustic feedback amplitude frequency characteristic in a frequency domain; a suppression gain calculator that calculates, from the acoustic feedback amplitude frequency characteristic, a suppression gain in the frequency domain for smoothing a frequency peak of the acoustic feedback amplitude frequency characteristic; and a suppressor that suppresses an output signal from the adaptive filter in the frequency domain by using the suppression gain.

Abstract: An information processing device according to the present disclosure includes a communication unit and a processor. The communication unit receives, from an in-vehicle device, vehicle identification information by which a vehicle is identifiable. The processor is configured to: detect an obstacle; and determine whether the vehicle is drivable along a driving route, according to a position of the detected obstacle and the driving route. Furthermore, the communication unit transmits a result of determination of drivability to the in-vehicle device.

Abstract: A charging method for a non-aqueous electrolyte secondary battery according to one aspect of the present disclosure comprises a switching step for switching the control temperature of a non-aqueous electrolyte secondary battery from high temperature to low temperature, wherein the non-aqueous electrolyte secondary battery includes a positive electrode and a negative electrode which reversibly perform intercalation and deintercalation of lithium ions, and the negative electrode contains, as a negative electrode active material, a carbon material and a silicon compound. The timing of the switching step is determined by detecting that dQGr/dQ, that is, the ratio of the amount of change in a capacity QGr of the carbon material to the amount of change in a battery capacity Q, becomes larger than dQSi/dQ, that is, the ratio of the amount of change in a capacity QSi of the silicon compound to the amount of change in the battery capacity Q.

Abstract: A vehicle display device transfers image information to a transfer destination that is a display device included in a vehicle, and includes: a transfer mode determiner that determines a transfer mode of the image information suitable for a rendering capability of the transfer destination, based on the image information, a rendering capability of a transfer source that is the vehicle display device, and the rendering capability of the transfer destination; and a transfer processor that converts a preset transfer mode to the transfer mode determined by the transfer mode determiner, and transfers the image information to the transfer destination in the transfer mode as converted.

Abstract: A system and a method for managing presence information on a person's presence in a free address office, which can be updated and adjusted with less time and effort for adaptation to a change in the office layout, and can efficiently collect information about the person's health. The system includes an in-room camera and an information collection robot. Upon detection of a seated person, the robot moves toward an area where the seated person is detected and captures a face image of the seated person with a face camera therein. Then, the system performs a face verification operation based on the face image to identify the seated person and generates the person's presence information. The system may also generate information on whether a person is wearing a mask or not, and/or acquire a person's vital information from a vital sensor in the robot.

Abstract: A ventilation device includes a main body case made of metal, a fan, a wireless communications unit, and a controller. Controller is configured to control fan in accordance with a signal received by the wireless communications unit. Main body case includes a suction section and an exhaust section. Suction section has a box shape, and includes a suction port. Suction section has a lower surface, an upper surface, and a front surface connecting a front edge of lower surface and a front edge of upper surface. Exhaust section is positioned on upper surface of suction section and includes exhaust port. Suction section includes a first opening and a second opening. First opening is in upper surface, and overlapped with at least part of wireless communications unit in upward-downward directions. Second opening is in front surface, and overlapped with at least part of wireless communications unit in forward-backward directions.

Abstract: The present invention provides a method for charging a nonaqueous electrolyte secondary battery which is provided with a negative electrode containing a carbon material, the method enabling charging with high efficiency, while ensuring good cycle characteristics. A method for charging a nonaqueous electrolyte secondary battery according to one embodiment of the present disclosure is a charging method for a nonaqueous electrolyte secondary battery that is provided with a negative electrode which contains a carbon material as a negative electrode active material; and this method comprises a switching step wherein the control temperature of the nonaqueous electrolyte secondary battery is switched from a high temperature to a low temperature.

Abstract: An utterer identification device executes: performing voice recognition from input utterance data; selecting, from among a plurality of registered utterance contents set in advance, a registered utterance content closest to a recognized utterance content indicated by a result of the voice recognition as a selected utterance content; selecting, from among a plurality of databases respectively associated with the registered utterance contents, a database associated with the selected utterance content; calculating a similarity between a feature quantity of the input utterance data and a feature quantity stored in the selected database; and identifying a certain utterer on the basis of the similarity, and outputting a result of the identification.

Abstract: A vehicle proximity device includes: an obtainer that obtains a first audio signal obtained by extracting a first frequency band of a first sound source signal and a second audio signal obtained by extracting a second frequency band thereof; a simulated signal processor that generates a simulated signal based on a second sound source signal; a third filter that generates a third audio signal by extracting the first frequency band of the simulated signal; a fourth filter that generates a fourth audio signal by extracting the second frequency band of the simulated signal; a sound pressure adjuster that generates an output audio signal by adjusting the simulated signal to reduce a first difference between the first audio signal and the third audio signal and a second difference between the second audio signal and the fourth audio signal; and an outputter that outputs the output audio signal to the loudspeaker.

Abstract: A seat component includes: a diaphragm; an exciter that is attached to the diaphragm and causes the diaphragm to vibrate based on an electrical signal that is inputted; and a sound absorbing body that is disposed to cover a back side and a periphery of the exciter and the diaphragm, and functions as a cushion for a seated person.

Abstract: An incentive granting method is implemented by a parking lot management system in which incentive information is stored. The incentive information is associated with a parking section. The method is executed to grant an incentive indicated by the incentive information to a user who uses a parking section associated with the incentive information. The method includes displaying pieces of incentive information associated with multiple parking sections on a display terminal connected to the parking lot management system via a network. The method includes detecting a vehicle parked in one of the multiple parking sections. The vehicle matches vehicle information registered in association with account information of the user. The method includes applying, to the account information at predetermined timing, an incentive indicated by one of the pieces of incentive information associated with the one of the multiple parking sections.

Abstract: An information processing device according to an embodiment of the present disclosure includes a memory and a processor coupled to the memory. The processor is configured to: notify a user of survey demand information for indicating a survey demand point included in a survey demand region that has a survey demand regarding the traffic volume; receive a captured image captured at the survey demand point by the user in accordance with the survey demand information; and estimate a traffic volume in the survey demand region based on the captured image that has been received.

Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode, and a non-aqueous electrolyte, wherein the positive electrode includes positive electrode active material particles, the positive electrode active material particles include a composite oxide containing lithium and a transition metal, and a cover material covering at least a portion of a surface of the composite oxide, and the cover material includes a metal oxide, and a phosphorus compound covering at least a portion of a surface of the metal oxide.

Abstract: An imaging apparatus includes: a communication interface that communicates data with an image processing apparatus connected via a communication network, an image sensor that captures a subject image to generate image data, a controller that transmits the image data to the image processing apparatus via the communication interface, to request image processing for the image processing apparatus on the image data, and a setting interface that acquires setting information on a request for image processing, according to user operation, wherein based on the setting information acquired with the user operation, the controller limits specific image data from the image data generated by the image sensor, to request, for the image processing apparatus, specific image processing thereon.

Abstract: This acoustic active sensor device comprises: a camera unit; an acoustic actuator having a sound generation unit that generates a sound; and a sound detection unit having a plurality of microphones which detect a reflective sound of the sound generated by the sound generation unit. The sound generation unit and the sound detection unit are disposed around the outer circumference of the camera unit and are centered thereon.

Abstract: An imaging device includes: an imaging element having an imaging plane for light from an object to enter; a switching mechanism that switches a first transmissibility state and a second transmissibility state therebetween by varying transmissibility for the light entering the imaging plane using optical filters, a processor that controls the imaging element and the switching mechanism; and a memory that stores therein instructions to be executed by the processor. The instructions include: determining whether the first transmissibility state or the second transmissibility state is established; in the first transmissibility state, acquiring a first setting range that indicates an aperture value or a focus settable in the first transmissibility state; in the second transmissibility state, acquiring a second setting range that indicates an aperture value or a focus settable in the second transmissibility state; and limiting the aperture value or the focus based on the first or second setting range.

Abstract: Provided is a carbon nanotube dispersion liquid for an electrode slurry such that it is possible to inhibit a decrease in a charge-discharge cycle characteristic. A carbon nanotube dispersion liquid for an electrode slurry according to one aspect of the present disclosure includes carbon nanotubes having a diameter of 0.4 to 2 nm, a dispersant, and a dispersion medium. In a Raman spectroscopy spectrum, the carbon nanotubes have a G/D ratio, which is the ratio of the peak intensities of the G-band (1560 to 1600 cm?1) and the D-band (1310 to 1350 cm?1), within the range of 50 to 200, and in a volume-based particle size distribution via a laser diffraction method, the carbon nanotubes have 3 to 5 peaks, and if the peaks are, from the small particle diameter side, P1, P2, . . . , Pn, the greatest frequency peak is in the range pf P2 to Pn-1.

Abstract: A signal processing device for reproducing a musical piece from one or more loudspeakers and one or more actuators that are provided in a seat includes: an obtainer that obtains data of a plurality of tracks that constitute the musical piece; and an outputter that outputs an acoustic signal included in data of a track among data of the plurality of tracks to the one or more actuators, and outputs an acoustic signal included in data of another track among the plurality of tracks to any loudspeaker among the one or more loudspeakers.

Abstract: A voice recognition device includes an estimation unit that compares a plurality of pieces of registration voice data stored in a database with input voice data uttered by a speaker who gets on a mobile body to estimate a registration command corresponding to the input command, a presentation unit that presents an estimation result, a second acquisition unit that acquires an error instruction indicating that the estimation result is an error, a determination unit that, in a case where the error instruction is acquired, determines a correct command corresponding to the input command based on an operation by the speaker, and a database management unit that stores the correct command and the input voice data in the database in association with each other

Abstract: A positive electrode active material includes LixMnyO2, wherein 1.012?x?0.683 and 0.91?y?1.0.

Abstract: A loudspeaker system includes: a loudspeaker; a loudspeaker box provided inside a seat, and in which the loudspeaker is provided; and an actuator. The actuator is provided inside the loudspeaker box to cause a baffle panel of the loudspeaker box to generate vibration.

Abstract: A motor unit includes: a case; a motor housed in the case; an input shaft; an output body; and a speed reducer mechanism. The input shaft penetrates through the case in an axial direction and is arranged to be rotatable around an axis defining the axial direction. The output body is arranged in the case to be rotatable around the axis. The speed reducer mechanism is housed in the case and reduces a rotational speed of the motor and transmits rotational force with the rotational speed thus reduced to the output body. The speed reducer mechanism includes only one pair of gears meshing with each other.

Abstract: A signal processing device for reproducing a musical piece from one or more loudspeakers and one or more actuators that are provided in a seat includes: an obtainer that obtains data of the musical piece; and an outputter that outputs an acoustic signal of a first frequency band included in the data of the musical piece to the one or more actuators, and outputs an acoustic signal of a frequency band excluding the first frequency band to the one or more loudspeakers, the frequency band being included in the data of the musical piece. The first frequency band is a band including a resonance frequency of the one or more actuators.

Abstract: A control method including, by a computer: acquiring schedule information indicating movement plans of a plurality of mobile bodies capable of short-range wireless communication with each other, when detecting that state information indicating a current state of a first mobile body among the plurality of mobile bodies is unable to be received from the first mobile body, searching for a second mobile body planned to move to a first area where the first mobile body is staying based on the schedule information; and transmitting delivery data for the first mobile body to the second mobile body.

Abstract: Provided is a parking assistance apparatus that performs parking assistance based on a training route of a vehicle in training traveling. The parking assistance apparatus includes a processor that determines whether a current position of the vehicle is outside the training route based on the current position of the vehicle and the training route. The processor outputs, in a case where the current position of the vehicle is outside the training route, a command to notify an occupant in the vehicle.

Abstract: Active material particles include: composite particles each containing a lithium silicate phase, and a silicon phase dispersed in the lithium silicate phase; and a first coating covering at least part of surfaces of the composite particles. The first coating contains an oxide of a first element with oxygen vacancies, and a carbon material, and the first element is an element other than non-metallic elements.

Abstract: Provided is a parking assistance apparatus that performs parking assistance based on a route of a vehicle in training traveling. The parking assistance apparatus includes a processor that causes the training traveling to be resumed from a predetermined position on a first route in the training traveling. The processor determines, as a training route, a route including a route before the predetermined position on the first route and a second route in the training traveling having been resumed.

Abstract: Provided is a method for producing colored wood, the method including: a step of impregnating a block of wood with an organic acid aqueous solution containing an organic acid; and a step of performing steam treatment at high temperature and high pressure on the block of wood in a wet state of being impregnated with the organic acid aqueous solution while keeping the block of wood in the wet state. In the steam treatment, the temperature is 110° C. or more and 160° C. or less and the pressure is a saturated steam pressure at the temperature.

Abstract: A deriver derives a difference defined as a distance between a position of a charging coil and a position of an electronic appliance. An extractor extracts a detection tolerance from a table stored in a table storage, based on information related to a model of the electronic appliance. A transmitter transmits the difference and the detection tolerance to the electronic appliance. The electronic appliance determines a first power when a magnitude of a combination of the difference and the detection tolerance is equal to or smaller than a threshold value and determines a second power when the magnitude of the combination of the difference and the detection tolerance is larger than the threshold value. The first power is larger than the second power. A power controller adjusts a magnitude of power to be transported from the charging coil according to an instruction from the electronic appliance.

Abstract: A server acquires, in a first predetermined period, first data in which excretion related data of a user, acquired by an excretion sensor installed in a toilet, and a user ID for identifying the user are associated with each other, generates a reference database indicating an excretion tendency of the user on the basis of the acquired first data, acquires, in a second predetermined period, second data in which excretion related data of the user, acquired by the excretion sensor installed in the toilet, and the user ID are associated with each other, generates alert information for the user on the basis of the reference database and the second data, and outputs the generated alert information.

Abstract: A resin composition contains a preliminary reaction product (A) obtained by previously reacting a polyphenylene ether compound (a1) having a hydroxyl group in a molecule and an acid anhydride (a2) having an acid anhydride group in a molecule, and a curable resin (B) containing a reactive compound having an unsaturated double bond in a molecule, in which an equivalent ratio of the acid anhydride group in the acid anhydride (a2) to the hydroxyl group in the polyphenylene ether compound (a1) is 1.5 or less, and a content of the curable resin (B) is 20 to 85 parts by mass with respect to 100 parts by mass of a sum of the preliminary reaction product (A) and the curable resin (B).

Abstract: A stator includes a plurality of stator blocks aligned in a circumferential direction and a plurality of coils each made of a winding wound around a corresponding one of the plurality of stator blocks. The stator includes a plurality of insulation members electrically insulating from the plurality of stator blocks from the plurality of coils for respective groups of the plurality of stator blocks and the plurality of coils. Each of the plurality of stator blocks includes a yoke portion located at its outermost perimeter, a teeth portion protruding from an inner peripheral surface of the yoke portion, and an insulating portion being electrically insulating and covering a surface of the teeth portion. Each of the plurality of insulation members includes a pair of insulating plates. Each of the pair of insulating plates has a width greater than a width of the teeth portion, and the pair of insulating plates are arranged to face each other across the teeth portion.

Abstract: An electronic apparatus includes a first storage device and a processor. The processor causes a server device to register the electronic apparatus by transmitting a first signal including identification information for identifying the first storage device, transmits, to the server device, a second signal including identification information of the first storage device and inquiring whether or not it is registered in the server device that data stored in the first storage device is to be erased, and erases the data stored in the first storage device when the electronic apparatus receives a third signal instructing erasure of the data stored in the first storage device. The third signal is transmitted when the identification information of the first storage device matches the identification information of the first storage device and it is registered in the server device that the data stored in the first storage device is to be erased.

Abstract: An aperture unit comprises a base plate, a cover, a plurality of movable blades, a drive ring, a drive motor, and rotation shafts. The movable blades are disposed between the base plate and the cover, and adjust the amount of light passing through by varying the size of the opening by opening and closing operations. The drive ring is disposed between the base plate and the cover, is rotationally driven when the movable blades are opened and closed, and has a plurality of cam pins that move along cam grooves in the movable blades. The cover has protrusions that protrude toward the movable blades along the optical axis direction and restrict the movement of the movable blades in the optical axis direction.