Abstract: A refraction at a suitably structured surface for example with an arrangement of the same between image plane and mapping optics is used to realize on the one hand a desired aliasing filtering or spatial low-pass filtering on the image plane wherein on the other hand the manufacturing of such structured surfaces may be realized in a cost-effective way. In addition to that, the plate thickness except for the amplitude of the surface structure and aspects of the stability of the plate is of no importance for handling the same, so that the integration into optical systems is facilitated.

Abstract: A shape memory alloy actuation apparatus comprises a movable element supported on a support structure by a suspension system comprising a plurality of resilient flexures. A shape memory alloy actuator drives movement of the movable element on contraction. An end-stop limits the movement of the movable element in the opposite direction. Rather than using the resilient flexures of the suspension system as the sole biassing means, an additional Massing element biasses the movable element against the SMA actuator. When the moveable element is held against the end-stop, the force applied by the biassing element is greater than the force applied by the flexures of the suspension system. This reduces the design constraints, for example allowing a greater range of movement.

Abstract: An image pickup system includes a lens apparatus, and an image pickup apparatus to which the lens apparatus is detachably attached. The image pickup apparatus controller changes a cycle of a control reference signal for internal processing of the image pickup apparatus, and sends a command of changing the cycle of the control reference signal to the lens controller in synchronization with a post-change control reference signal. The lens controller that has received the command changes the cycle of the control reference signal when the lens apparatus is ready to change the cycle of the control reference signal, and sends to the image pickup apparatus controller information representing whether the lens controller has been able to follow the change of the cycle of the control reference signal.

Abstract: An optical system (OL) includes a magnification conversion optical unit (EXT) configured to be insertable and removable at a position between an aperture stop (SP) and an image plane (IP) of the optical system in order to change a focal length of the optical system, a total lens length of the optical system is constant before and after insertion of the magnification conversion optical unit, and a length Lp on an optical axis from the aperture stop to the image plane of the optical system, and a length Le on the optical axis from a lens surface closest to an object side of the magnification conversion optical unit to the image plane when the magnification conversion optical unit is inserted are appropriately set.

Abstract: A lens apparatus detachable from an image pickup apparatus includes a focus lens, a driver configured to drive the focus lens, a first position detector configured to detect a position of the focus lens, and a controller configured to correct the position of the focus lens detected by the first position detector to a position of the focus lens in a predetermined optical characteristic, to transmit a corrected position of the focus lens to the image pickup apparatus, to correct driving information of the focus lens in the predetermined characteristic received from the image pickup apparatus to driving information of the focus lens in a current optical characteristic, and to instruct the driver to drive the focus lens in accordance with the position of the focus lens detected by the first position detector and corrected driving information of the focus lens.

Abstract: A zoom lens includes, in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, an aperture stop, a third lens unit having a positive refractive power, and a rear lens group including at least one lens unit, the first lens unit is positioned closer to the object side at a telephoto end than at a wide-angle end, the third lens unit includes at least one positive lens, and a partial dispersion ratio ?gF3P of a material of one positive lens in the third lens unit, Abbe's number ?d3P, focal lengths fW and fT of a total system at the wide-angle end and the telephoto end respectively, a focal length f1 of the first lens unit, and a focal length f3 of the third lens unit are appropriately set.

Abstract: An improved system and methods for enhancing the imaging of cameras included with wireless mobile devices, such as cellular phone or tablets. The imaging system includes a releasable optical attachment for imaging skin surfaces and cavities of the body. The releasable optical attachment comprises optical enhancement elements such as magnifying lenses, illumination diverting elements, and filters. Images can be viewed and analyzed on the mobile device, or transmitted to another location/device for analysis by a person or software. The results can be used to provide diagnosis, or for a variety of other applications including image comparison over time and product recommendations.

Abstract: A lens-interchangeable camera system includes: an interchangeable lens unit storing lens characteristic data corresponding to parameters of lenses in a discrete manner; and a camera body unit to which the lens characteristic data is transmitted from the interchangeable lens unit when the interchangeable lens unit is mounted. The camera body unit includes an acquisition data storage unit storing the transmitted lens characteristic data, a closest data acquisition processing unit, a close data acquisition processing unit, and an unacquired data acquisition processing unit. Processing is performed in the order from the closest data acquisition processing unit, the close data acquisition processing unit and the unacquired data acquisition processing unit.

Abstract: An image sensor module includes: an image sensor having an image surface; a plurality of lenses arranged sequentially from an object side to the image surface side, each of the lenses refracting an incident light; and at least one infrared cut-off filter configured to cut off an infrared component from the incident light. At least one surface of the infrared cut-off filter has a concave shape in relation to the object side.

Abstract: A lens front cap module and an image pickup apparatus having a zooming barrel, a focusing barrel and a lens front cap body. Both zooming barrel and focusing barrel are hollow barrel shaped structures. The focusing barrel is installed in the zooming barrel. An abutting portion is formed on an inner wall of the zooming barrel. The lens front cap body comprises a driving plate and a vane module. The driving plate is installed at an end of the zooming barrel and has a central window aperture. A driving pin is axially extended from the driving plate. The vane module is disposed on a side of the zooming barrel for shielding or unshielding the central window aperture. When the abutting portion abuts the driving pin, the driving pin drives the driving plate to rotate, and to drive the vane module to shield the central window aperture.

Abstract: Providing an imaging apparatus wherein dust does not easily adhere to the imaging portion. The apparatus comprising an imaging portion provided with an image pickup device, a first housing holding the imaging portion, a protective cover disposed a photographic object side, a second housing holding the cover and provided with a mount structure, to attachably and removably mount interchangeable lenses at the photographic object side, and wherein an airtight space is formed by at least one of the first and the second housings, the imaging portion, and the cover.

Abstract: An imaging apparatus disclosed in the present application includes a lens optical system including a lens and a stop; an imaging; and an array-form optical element located between the lens optical system and the imaging device and including optical components extending in a row direction in a plane vertical to an optical axis of the lens optical system, the optical components being arrayed in a column direction in the plane. The imaging device includes pixel groups, each of which includes first pixels arrayed in the row direction and second pixels arrayed in the row direction at positions adjacent, in the column direction, to the first pixels. The pixel groups are arrayed in the column direction. Border positions between the optical components are respectively offset in the column direction with respect to corresponding border positions between the pixel groups.

Abstract: A camera module 20 includes an image sensing device 3, and a lens 5 for converging, on the image sensing device 3, incident light 40 from a direction in which an image is shot. The camera module 20 further includes a filter 30 including (i) a visible light scattering filter 8 for scattering the incident light 40 and (ii) a visible light transmitting filter 9 for transmitting the incident light 40, the filter 30 being provided, on a side of the lens 5 from which side the incident light 40 enters, so as to be movable perpendicular to a direction 42 of the incident light 40.

Abstract: A camera body is provided that includes a base member, a body mount, a focal plane shutter and a fastening member. The body mount is configured to support an interchangeable lens. The fastening member is configured to fasten the focal plane shutter unit to the base member. The body mount, the base member, and the focal plane shutter unit are disposed between a subject side of the camera body and a user side of the camera body in that order. The focal plane shutter unit is fastened to the base member that faces toward the user side of the camera body.

Abstract: A lens apparatus includes an imaging optical system including a movable lens unit, a drive unit configured to drive the movable lens unit, and a control unit configured to cause the movable lens unit to perform a wobbling motion in an optical axis direction by alternatively outputting to the drive unit a first drive command for driving the movable lens unit at a first driving speed and a stop command for stopping driving of the movable lens unit, and to move the movable lens unit based on contrast information obtained from an image pickup unit during the wobbling motion of the movable lens unit, wherein, at least one of before and after outputting the first drive command to the drive unit, the control unit outputs to the drive unit a second drive command for driving the movable lens unit at a second driving speed lower than the first driving speed.

Abstract: An image capture apparatus with a detachable lens includes a communication unit capable of switching a communication mode used in communication with the mounted lens unit between a first communication mode of transmitting first control information to the mounted lens unit and a second communication mode of transmitting a second control information different from the first control information to the mounted lens unit, and a control unit configured to control a communication with the mounted lens unit, wherein the control unit controls the communication such that, until the control started based on either one of the first control information and the second control information is ended, the other one of the first control information and the second control information is not transmitted.

Abstract: Methods and apparatus for a Curved Sensor System are disclosed. The present invention includes a wide variety of generally curved, aspheric or non-planar arrangement of sensors and their equivalents. The curved surfaces, edges or boundaries that define the geometry of the present invention may be continuous, or may be collections or aggregations of many small linear, planar or other segments which are able to approximate a curved line or surface.

Abstract: A sound pickup device includes a detector configured to detect attachment of an external apparatus, a sound pickup unit configured to pick up a sound and output a sound signal, and a noise processor configured to, in response to the detection of attachment of an external appliance, add a noise signal to the sound signal output from the sound pickup unit and output the sound signal including the noise signal added thereto.

Abstract: Provided is an image pickup lens composed of three lens elements and an image pickup apparatus using the same, where the image pickup lens has satisfactorily corrected aberrations despite being smaller in size than conventional image pickup lenses. As image pickup lens includes, in order from the object side, an aperture stop, a first lens, a second lens, and a third lens. The first lens is a positive lens and is a meniscus lens having a convex surface facing the object side and a concave surface facing the object side, and the third lens is a negative lens. The image pickup lens satisfies conditional expressions relating to an air gap between the second and third lenses, a focal length of the second lens, and a curvature radius of the object-side surface of the second lens.

Abstract: A plenoptic camera apparatus includes a main lens unit configured to collect rays emitted from a subject. The plenoptic camera apparatus includes an image sensor unit adapted to capture images formed from the collected rays through one or more convertible lens device units. The convertible lens device units are positioned between the main lens unit and the image sensor unit and configured to provide individual curvature adjustment. The plenoptic camera apparatus includes a control unit configured to control the convertible lens device units to switch to a high-resolution imaging lens or a plenoptic imaging lens array, based on a user's selection, and control driving of the convertible lens device units to compensate for a partial aberration caused by the main lens unit.

Abstract: A holography attachment device for a digital imaging device. The holography attachment device including a chamber having a proximate end configured to attach to the digital imaging device. A distal end of the chamber includes a wall. Also, the chamber includes a sample holder section located between the proximate end and the distal end. The sample holder section is configured to receive a sample. The chamber is configured to attach to the digital imaging device.

Abstract: A zoom lens comprises in order from an object side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a third lens unit having a positive refractive power, and the third unit having a positive refractive power comprises in order from the object side, a first lens component having a positive refractive power, and a second lens component having a negative refractive power in which, a lens having a positive refractive power and a lens having a negative refractive power are cemented, and the zoom lens satisfies the following conditional expressions (1), (2), and (3) 1.4<|f3—2p/f3—2n|<2.6??(1) nd3—2p?nd3—2n?0??(2) nd3—2n?1.

Abstract: A photographing device includes a photographing optical system having an image sensor, a polarizing filter which rotates about an optical axis of the photographing optical system and is positioned in an optical path thereof, a rotation driver which preliminarily rotates the polarizing filter at a predetermined cycle pattern, a detector which detects an object luminance signal of object-emanating light transmitting through the polarizing filter and captured by the image sensor when the polarizing filter preliminarily rotates the polarizing filter at the predetermined cycle pattern, a signal generator which generates a rotation control signal by eliminating any frequency component of a cycle pattern that is different from the predetermined cycle pattern from the object luminance signal, and a controller which controls a rotational angle position of the polarizing filter based on the rotation control signal generated by the signal generator.

Abstract: Embodiments are disclosed herein related to the construction of optical elements for an RGB camera system. One disclosed embodiment provides a wide-angle lens construction, comprising a first, negative stage, and a second, positive stage positioned behind the first, negative stage along an optical axis of the lens construction. The second, positive stage further comprises a first positive lens substage, a first negative lens substage, a second positive lens substage, and a second negative lens substage.

Abstract: An image capturing apparatus includes: an imaging element; a main lens that condenses light from a subject toward the imaging element; a micro lens array that is configured by a plurality kinds of micro lenses with different focal lengths that is disposed between the imaging element and the main lens and causes light transmitted through the main lens to form an image on the imaging element; and a CPU that, in response to receiving a designation of a distance to a side of a subject that is photographed, performs weighting for each image that is imaged by the plurality kinds of micro lenses of the imaging element based on the distance so as to constitute one captured image.

Abstract: A digital camera includes: an imaging unit that photoelectrically converts light to output a color image; a selecting unit that selects any one identifier from identifiers which are colored in different colors from each other; and a black/white image producing unit that produces a black/white image by weighting gradation values of respective colors for each of pixels of the output color image and adding the weighted gradation values to each other. When the light entered to the imaging unit is entered to a color filter having a color equal to a color of the selected identifier, a correlation between a light amount of light having a wavelength which penetrates the color filer and a light amount of the entered light becomes stronger than a correlation between a light amount of light having a wavelength which is absorbed by the color filter and the light amount of the entered light.

Abstract: Provided is an imaging lens, in which a space holding portion is formed outside the effective aperture of one or both of junction type compound lenses facing each other in order to hold the space between the junction type compound lenses. A mating face formed on the space holding portion which is made of the same material as that of a lens portion is brought in direct contact with a mating face provided on the other among the junction type compound lenses facing each other at the position facing the mating face of the space holding portion, outside the effective aperture of the other junction type compound lens. Alternatively, mating faces which are formed on confronting surfaces of the space holding portions formed on the facing junction type compound lenses are brought in direct contact with each other.

Abstract: There are provided an inner focus lens consisting of a first lens group, an aperture diaphragm, and a second lens group in order from an object side. The first lens group has a positive first lens element, a positive second lens element, and a negative third lens element, or has a positive first lens element, a positive second lens element, a positive third lens element, and a negative fourth lens element, in order from the object side. One lens element in the second lens group is moved with respect to an image surface in focusing. The second lens group has five or more lens elements, and has a configuration including a negative lens element, a positive lens element, and a positive lens element in order from the object side.

Abstract: A zoom lens system, in order from an object side to an image side, comprising a first lens unit having negative optical power, a second lens unit having positive optical power, a third lens unit having positive optical power, and a fourth lens unit having positive optical power, wherein in zooming, the intervals between the respective lens units vary, the third lens unit comprises a plurality of lens elements, and the condition (I-1): 0.47<|f31/fG3|<1.00 (fT/fW>2.

Abstract: A multiband camera comprises: a band-pass filter having four or more optical filters; a microlens array having arrayed microlenses; a photoelectric conversion element including a plurality of pixels; and a measurement unit for measuring spectral intensity. The multiband camera satisfies the expression below, where Pl is a pitch between the microlenses, Ps is a pitch between the pixels, n is a number of pixels corresponding to one microlens, u is an effective dimension in a prescribed direction of the pixels, t is a dimension in the prescribed direction of a real image that the band-pass filter forms on a plurality of two-dimensionally arrayed pixels, Na is a number of microlenses arrayed in the prescribed direction, L is a distance from an exit pupil to the microlens, and f is a focal length of the microlens.

Abstract: An optical imaging system for multispectral imaging. A filter arrangement for selecting particular spectral ranges is located in a beam path coming from an object to be imaged, and at least one detection device is provided for receiving the selected spectral ranges.

Abstract: An image pickup apparatus which is capable of accurately acquiring evaluation values at target positions for contrast evaluation value acquisition to thereby suppress degradation of accuracy of autofocus due to skipping the reading of a contrast evaluation value at an in-focus position and an increase in autofocus time. The image pickup apparatus acquires from an interchangeable lens at least one of a drivable defocus amount of the interchangeable lens, and a driving speed in driving of a focus lens to focus adjustment positions. The image pickup apparatus changes a lens driving method for focus detection, based on at least one of the drivable defocus amount, the driving speed, and a charge storage interval for charge storage in an image pickup element for acquiring a signal for use in focus detection.

Abstract: An image pickup lens includes: a first lens with a positive power, including a convex surface facing the object side; an aperture stop; a second lens with a negative power, including a concave surface facing the image side; a third lens with a positive or negative power; a fourth lens with a positive power, including a convex surface facing the image side; and a fifth lens with a negative power, including a concave surface facing the image side. The surface of the fifth lens facing the image side is an aspheric surface and includes an inflection point. The image pickup lens satisfies the predetermined condition relating to a focal length of the first lens.

Abstract: There is provided an image pickup apparatus that is capable of being reduced in size when a barrel unit including a dimming device is used. An image pickup apparatus 1 includes a barrel unit 2 that emits incident image-pickup light after bending the optical path of the image-pickup light, and an image pickup device 3 that detects the image-pickup light emitted from the barrel unit 2 to obtain an image pickup signal. The barrel unit 2 has a dimming device (a liquid crystal dimming device 26) in a bending region of the optical path of the image-pickup light. As compared with an existing image pickup apparatus in which the dimming device is disposed in a region (on an optical path between the bending region and the image pickup device 3) on the image pickup device 3 side in the barrel unit, a length of an optical path (a length of a lens) of the image-pickup light up to the image pickup device 3 is reduced by an amount of the installation space of the dimming device.

Abstract: A lens module includes a lens holder, a lens barrel, and an image sensor. The lens barrel is received in the lens holder and includes a top surface and a bottom surface opposite to the top surface. At least three positioning poles extend downward from the bottom surface. Each of the positioning poles includes an end surface facing away the bottom surface, and center points of the at least three positioning poles form a positioning circle. A center of the positioning circle is coaxial to an optical axis of the lens barrel. The image sensor module supports the lens holder, and the center of the positioning circle is located in an optical axis of the image sensor module.

Abstract: A zoom optical system having a lens group I including two single lenses or one lens component, an aperture stop, and a lens group A disposed between the lens group I and the aperture stop, including a lens component made up of a positive lens LA and a negative lens LB that are cemented together, and having a negative refracting power as a whole. The distance between the lens group I and the lens group A on the optical axis changes for zooming, and the lens component has an aspheric cemented surface. When the shape of the aspheric surface is expressed by a certain equation, the shape of the air-contact surface of the positive lens LA and its aspheric components etc. satisfy conditional expressions (3a) and (3b).

Abstract: The image pickup lens is composed of, in order from the object side, an aperture stop; a first lens with positive refractive power, including a convex surface facing the object side; a second lens with negative refractive power, including a concave surface facing an image side; a third lens with positive refractive power, including a convex surface facing the image side; a fourth lens with positive refractive power, having a meniscus shape including a convex surface facing the image side; and a fifth lens with negative refractive power, including a concave surface facing the image side. The image pickup lens satisfies conditional expressions relating to curvature radiuses of the object-side surface and the image-side surface of the fourth lens, a distance on an optical axis from the aperture stop to a focal point at the image side, and a focal length of the total system of the image pickup lens.

Abstract: An image forming lens including an aperture stop, a first lens group, and a second lens group having a positive power, the first lens group including a first F lens group having a negative power and a first R lens group having a positive power, the first F lens group including at least two negative lenses, the first R lens group including at least one positive lens, the second lens group including a second F lens group having a positive power and a second R lens group, the second F lens group including a first positive lens, a first negative lens, a second negative lens, and a second positive lens, and the second R lens group including at least one lens.

Abstract: An image pickup apparatus (301) includes an image pickup element (103), a lens unit (101) configured to collect a ray from an object (201) on an image-side conjugate plane (202), and a lens array (102) that includes a plurality of lens cells, and that is disposed so that the image-side conjugate plane (202) and the image pickup element (103) are conjugate to each other, and the lens array (102) is disposed so as to meet a predetermined conditional expression.

Abstract: An imaging lens system includes a first lens group having a positive refractive power and a second lens group having a positive refractive power, the first lens group and the second lens group are sequentially arranged from an object side to an image surface. The first lens group includes a first lens having a positive refractive power, a second lens having a positive refractive power, and a third lens having a negative refractive power and having a concave surface toward the image surface, which are sequentially arranged from the object side to the image surface. The second lens group includes a cemented lens of a fourth lens that has a concave surface toward the object side and is a negative lens and a fifth lens that is a positive lens, which are sequentially arranged from the object to the image surface.

Abstract: An optical device that creates separate images for different wavelength bands of light. The device comprises a light sensor, a first dichroic filter, and a first mirror. The light sensor comprises a first light sensing portion and a second light sensing portion. The first dichroic filter reflects a first portion of incident light of a first wavelength band from a source through an imaging lens with the imaging lens projecting a first image of the source onto the first light sensing portion of the light sensor; and the first dichroic filter transmits a second portion of incident light of a second wavelength band from the scene different from the first wavelength range. The first mirror is positioned to reflect the transmitted second portion of incident light through the imaging lens, the imaging lens projecting a second image of the source onto the second light sensing portion of the light sensor.

Abstract: An image capture apparatus on which a lens apparatus is detachably mounted, may include an image capture device, an image-signal processor, a communication unit, and a control unit. The image capture device may generate an image signal obtained by photoelectric conversion of subject light forming an image through a lens of the image capture apparatus. The image-signal processor may carry out image processing on the image signal photo-electrically converted by the image capture device. The communication unit may communicate with the lens apparatus. The control unit may carry out control to receive the correction information for lateral chromatic aberration and/or the correction information for light falloff at edges through the communication unit.

Abstract: A motor control device includes a counter that counts pulses output from a one-phase encoder according to rotation of a DC motor, and a controller that recognizes rotation number of the DC motor based on the number of pulses counted by the counter. After the DC motor is braked, the controller starts applying a predetermined voltage to the DC motor at first timing before the DC motor stops, and stops applying the predetermined voltage at second timing after the DC motor stops. The controller subtracts the number of pulses generated after the second timing from a value counted by the counter. The predetermined voltage is lower than a lowest voltage necessary for driving a driven object, and is higher than a lowest voltage necessary for rotating the DC motor against an attracting force between a magnet and a coil in the DC motor.

Abstract: An optical sensing apparatus includes an optical sensing pixel array and a plurality of micro-optical device sets. The optical sensing pixel array has a plurality of array elements, and each of the array elements has one or multiple of a plurality of optical sensing pixels. The micro-optical device sets are configured corresponding to the optical sensing pixels respectively. Each of the micro-optical device sets has a shifting vector with respect to one of the optical sensing pixels. The optical sensing pixel array has a reference original point. Two shifting vectors of two of the micro-optical device sets with respect to corresponding two of the optical sensing pixels at the same radial distance on two polar axes from the reference original point and along opposite directions are asymmetric.

Abstract: Provided is a small-sized five-element image pickup lens which ensures a sufficient lens speed of about F2 and exhibits various aberrations being excellently corrected. The image pickup lens is composed of, in order from the object side, a first lens with a positive refractive power, including a convex surface facing the object side; a second lens with a negative refractive power, including a concave surface facing the image side; a third lens with a positive or negative refractive power; a fourth lens with a positive refractive power, including a convex surface facing the image side; and a fifth lens with a negative refractive power, including a concave surface facing the image side. The image-side surface of the fifth lens has an aspheric shape, and includes an inflection point at a position excluding an intersection point with the optical axis.

Abstract: Provided is a small-sized five-element image pickup lens which ensures a sufficient lens speed of about F2 and exhibits various aberrations being excellently corrected. The image pickup lens is composed of, in order from the object side, a first lens with a positive refractive power, including a convex surface facing the object side; a second lens with a negative refractive power, including a concave surface facing the image side; a third lens with a positive or negative refractive power; a fourth lens with a positive refractive power, including a convex surface facing the image side; and a fifth lens with a negative refractive power, including a concave surface facing the image side. The image-side surface of the fifth lens has an aspheric shape, and includes an inflection point at a position excluding an intersection point with the optical axis.

Abstract: An image pickup optical system includes, in order from an object side to an image side, a first lens unit that does not move for focusing and has a positive optical power, a second lens unit that moves during focusing, an aperture diaphragm, and a third lens unit that does not move for focusing. The image pickup optical system includes a diffractive optical element, and an optical element NLF made of a solid material on the object side of an intersection between a paraxial chief ray and an optical axis. The predetermined conditional expressions are satisfied.

Abstract: An image forming lens consists of from an object side to an image side in the following order: a first group with a positive refractive power; an aperture stop; and a second group with a positive refractive power, wherein the second group includes, from the object side to the image side in the following order, a biconvex lens, a biconcave lens, a negative meniscus lens a convex surface of which faces the image side, a biconvex lens, and a positive meniscus lens a convex surface of which faces the image side.

Abstract: An image taking optical system includes, in order from the object side, a stop, a first lens having a biconvex shape and having a positive refractive power, a second lens having a concave surface facing the image side and having a negative refractive power, a third lens having a convex surface facing the image side and having a positive refractive power, and a fourth lens having a negative refractive power. The image taking optical system satisfies the conditional expression “0.6<d5/(d5+d6)<0.8”, where d5 is the air distance between the second lens and the third lens on the optical axis, and d6 is the thickness of the third lens.

Abstract: An imaging apparatus system includes an interchangeable lens 100 and a camera body 200. The interchangeable lens 100 includes an optical system configured to generate an optical image of a subject, a first communication unit 106, and a lens controller 105 configured to control driving of the optical system in synchronization with a reference signal received through the first communication unit. The camera body 200 includes a second communication unit 201 that can communicate with the first communication unit 106, and a body controller 203 configured to send the reference signal to the lens controller 105 through the second communication unit 201. The body controller 203 sends announcement information preliminarily announcing switching of the cycle of the reference signal, to the lens controller 105. The lens controller 105, when receiving the announcement information from the camera body, performs a preparation operation for switching the cycle of the reference signal.