Abstract: The present disclosure relates to the technical field of adjustment and installation of photography and video recording, in particular, to a quick-mounting structure, an adaptor ring and a filter. The quick-mounting structure includes a rotating groove body, wherein the rotating groove body is provided with a sliding groove therein, a notch is provided in the side wall of the sliding groove, and the rotating groove body is provided on the first connecting member; and a stopper, wherein the stopper is provided on the second connecting member, and can get into and out of the sliding groove through the notch.

Abstract: Provided are a method and apparatus for controlling a handheld gimbal, and a handheld gimbal. The method comprises: receiving an indication, input by a user, of entering a fast following mode; based on the indication of entering the fast following mode, updating control parameters of a camera component in one or more directions, wherein the control parameters of a camera component in one or more directions comprise the maximum following rate and acceleration of the camera component in one or more directions; and applying the updated control parameters of a camera component in one or more directions to control the rotation of one or more corresponding electric motors in a handheld gimbal, thus controlling the movement of the camera component in one or more directions. Where a gimbal handle needs to be rotated quickly for photography, the present invention can enable a camera component fixed on a handheld gimbal to quickly follow a target and perform photography smoothly.

Abstract: This disclosure relates to a front trunk including a screen for displaying still images or video. Among other benefits, which will be appreciated from the below description, the disclosed features increase the usability of the front trunk, and, in turn, the vehicle overall. In particular, many of the features discussed below are intended to make the front trunk more usable at worksites, tailgating events, etc.

Abstract: A camera includes a viewfinder portion causing a frontward field of view to be visible through a viewfinder, and a drive lever rotatable about a shaft. An operation cylinder operable to extend and contract an extendable unit includes a guide surface extending in a circumferential direction and a recess adjacent to the guide surface. The drive lever includes an actuation portion that comes in contact with the guide surface of the operation cylinder. The camera further includes an urging member urging the actuation portion in the drive lever, a prism that changes a direction of a field of view visible through the viewfinder portion, and a prism guide lever rotatable about a shaft. The prism guide lever includes a prism holder holding the prism, and a follower gear meshing with a drive gear in the drive lever. The prism holder is placeable into the viewfinder portion.

Abstract: An image forming apparatus controls a generation circuit to modulate a DC component of a developing voltage based on a first correction component such that a density unevenness is reduced. The image forming apparatus further restricts the first correction component for modulating the DC component of the developing voltage such that fogging of toner that may occur on a non-exposure region which is not exposed by an exposure unit and adhesion to a photosensitive member of carrier included in a developer are reduced.

Abstract: An optical member control apparatus comprises a first optical member and a second optical member that are arranged to be movable on the same plane that intersects an optical path of light that enters an image capturing element, and when movement is performed to insert either one of the first optical member and the second optical member into the optical path and to retract the other of the first optical member and the second optical member from the optical path, performs control such that movement of the optical member that is to be inserted into the optical path is started after movement of the optical member that is to be retracted from the optical path is started and before the movement is complete.

Abstract: A mounting system for an image capture device that includes three pivotably connected arms is disclosed. The first arm includes a first fastener that is lockable and unlockable to allow for connection and disconnection of the image capture device, and a second fastener that is lockable and unlockable to regulate the position of the image capture device relative to the first arm. The mounting system further includes a third fastener that is lockable and unlockable to regulate the relative positioning between the first arm and the second arm, and a fourth fastener that is lockable and unlockable to regulate the relative positioning between the second arm and the third arm. Whereas the first fastener is removable, each of the second, third, and fourth fasteners is captive to (nonremovable from) the mounting system.

Abstract: An optical instrument for modifying light as a function of selected prisms and anti prisms for generating visible complex geometries. The optical instrument provides a linear arrangement of crystal portions followed by prism portions through which light passes, respectively, before being viewable through an eyepiece. The crystal portions provides a multifaceted crystal prism, a crystal chamber housing a selective arrangement of a plurality of basic crystal polyhedra, and a rotatable transparent sphere. The prism portions provide mirrored and glass surface triangular prisms independently rotatable relative to the longitudinal axis of the optical instrument.

Abstract: The visibility of the external scene from the inside of the transmissive transparent screen when the video image is not displayed and the visibility of the video image from the outside when the video image is displayed are satisfied. In a video image display system comprising a projection device 100 and a transmissive transparent screen 1 having a first surface and a second surface on the opposite side of the first surface, having a visible light transmittance of at least 5[%], and displaying video images projected from the projection device 100 installed on the first surface side, as video images visible to an observer on the second surface side, the following formula 1 is satisfied: ?1.5?ln(((B/A)/I)×G)?3.9??Formula 1 in the formula 1, A is the projection area [m2] of the projection device 100, B is the luminous flux [lm] projected onto A by the projection device 100, I is the ambient illuminance [lx] at the side of the second surface, and G is the screen gain of the transparent screen 1.

Abstract: An image forming apparatus includes an apparatus body, a toner cartridge, a replaceable part, an apparatus body memory, and a controller. The replaceable part includes a replaceable part memory storing therein extended-use allowance-and-restriction information. The extended-use allowance-and-restriction information indicates one of allowance information and restriction information. The extended use is defined as use of the replaceable part even after the replaceable part exceeds the remaining life indicated by the life information stored in the apparatus body memory. The apparatus body memory stores life information indicating remaining life of the replaceable part. In a case where the controller determines that the extended-use allowance-and-restriction information indicates the restriction information, the controller is configured to restrict the extended use of the replaceable part.

Abstract: An image forming apparatus includes an image forming unit includes a photosensitive member; a charging unit configured to uniformly charge the photosensitive member; an exposure unit configured to form an electrostatic latent image on the photosensitive member by scanning the charged photosensitive member with laser light; and a developing device configured to develop the electrostatic latent image to form an image on the photosensitive member, a reading unit configured to read a test image, which is formed by the image forming unit, for detecting image density of the image, and a controller configured to: control the image forming unit to form the test image; detect periodic fluctuation of the image density based on a detection result of the test image which is acquired by controlling the reading unit to read the test image; and correct an image forming condition to suppress the detected fluctuation.

Abstract: A mounting seat is connected to a doorbell includes a mounting portion, an extendable portion, and a connecting portion. The mounting portion is connected to a mounting surface. The extendable portion is connected to the mounting portion. The extendable portion could be extended or retracted by exerting force. The extendable portion includes a first extendable section and a second extendable section. The connecting portion is connected between the extendable portion and the doorbell. When the first extendable section is extended or retracted relative to the mounting portion, the extendable portion drives the connecting portion and the doorbell to turn along a first axis. When the second extendable section is extended or retracted relative to the mounting portion, the extendable portion drives the connecting portion and the doorbell to turn along a second axis. The first axis is not parallel to the second axis.

Abstract: A controllable aperture stop includes a light pass portion, a fixed portion, a driving part and rollable elements. The light pass portion includes movable blades together surrounding a light pass aperture. The fixed portion has shaft structures corresponding to the movable blades. The driving part includes a rotatable element, a magnet and a coil. The rotatable element is for driving the movable blades to rotate relative to the shaft structures to adjust the size of the light pass aperture. The magnet is disposed on the rotatable element. The coil corresponds to the magnet. The magnet and the coil are to drive the rotatable element to rotate around the light pass aperture. The rollable elements are disposed between the fixed portion and the rotatable element and arranged around the light pass aperture, so the rotatable element is rotatable relative to the fixed portion.

Abstract: A handle mechanism includes a front grip and a rear grip, wherein the rear grip is hinged with the front grip, and the rear grip is provided with a mounting assembly for mounting the rear grip on a side of an external photographic device. The front grip and the rear grip can be rotated and fitted together so as to be used as a handle of the external photographic device. The handle mechanism serves as a desktop support, and the front grip and the rear grip can b e rotated and unfolded to form a V-shaped support to support the external photographic device. The handle mechanism may be configured as a handle and a support. Compared with a handle and a support that are independent, the handle mechanism is more convenient to carry and use, and has a lower use cost.

Abstract: Disclosed are a camera module and a method thereof, and a terminal which relates to the field of camera technology. The camera comprises a circuit board, a sensitive chip, a bracket, and a sealing member. At least one side of the bracket is an open side, and a receiving cavity is defined between a surface of the open side facing the circuit board and a first surface of the circuit board. The sealing member is filled in the receiving cavity. The camera module improves the space utilization efficiency, reduces the width of the open side, increases the screen-to-body ratio of the terminal, and improves user's perception and user experience.

Abstract: A lens apparatus includes a holding barrel configured to hold a lens, an operation member, an exterior barrel configured to hold the operation member rotatably around an optical axis, and a fixed barrel. When the holding barrel and the exterior barrel move in an optical axis direction relative to the fixed barrel, an imaging state and a retracted state are switchable. When the operation member is rotated in one direction in each of the imaging and retracted states, the operation member gets engaged with the fixed barrel and the state gets locked. When the operation member is rotated in the other direction around the optical axis, the operation member gets disengaged from the fixed barrel, and the imaging state or the retracted state gets unlocked and switchable.

Abstract: A camera includes a lens-camera communication controller and an adapter-camera communication controller. The camera-lens communication channel includes a first data communication channel used during a data communication and a first notification channel used for a notification of a timing of a communication via the first data communication channel. The camera-adapter communication channel includes a second data communication channel used during the data communication and a second notification channel used for a notification of a timing of a communication via the second data communication channel.

Abstract: A positioning device to control the position of a print agent applicator comprises a mount to support a print agent applicator at a load point on the mount; an actuator coupled to the mount to apply a driving force at an actuation point on the mount; and a guide mechanism to guide the mount and supported print agent applicator, under the driving force, to translate along a predetermined path towards a printing drum to form an engaging contact between the print agent applicator and the printing drum.

Abstract: An electronic apparatus includes a plurality of contacts electrically connectable to an accessory and arranged in a first direction orthogonal to a direction in which the accessory is attached. The contacts include an attachment detection contact to detect an attachment of the accessory to the electronic apparatus, and a communication request contact for a communication request from the accessory to the electronic apparatus. The attachment detection and communication request contacts are disposed between a contact closest one end and a contact closest to another end in the first direction. The attachment detection contact is disposed between the communication request contact and the contact closest to the one end. In the first direction, a distance between the attachment detection contact and the communication request contact is shorter than that between the communication request contact and the contact closest to the other end.

Abstract: An accessory includes: a detection terminal; a first power supply terminal through which a first power supply voltage is supplied; a second power supply terminal through which a second power supply voltage is supplied; a ground terminal; a ready terminal; a first clock terminal; a first data terminal; a second data terminal; a second clock terminal; a third data terminal; a first circuit to which the first power supply voltage is supplied through the first power supply terminal; and a second circuit to which the second power supply voltage is supplied through the second power supply terminal, wherein: the ground terminal is used as a ground potential for the first circuit and the second circuit; and a distance between the second clock terminal and the first power supply terminal is longer than a distance between the first clock terminal and the first power supply terminal.