Abstract: An internal-reflective telecentric lens system includes a first lens assembly, a reflector, and a second lens assembly. The first lens assembly includes a first lens. The second lens assembly includes a second lens, a third lens, and a fourth lens, that are disposed in sequence along a light path. The first lens assembly is configured to receive and output one or more light beams towards the reflector. The reflector is configured to reflect the light beams towards the second lens assembly. The second lens assembly is configured to receive and converge the light beams reflected by the reflector at a diaphragm between the second lens and the third lens, and transmit the light beams past the diaphragm through the third and the fourth lenses for imaging.

Abstract: A digital photographing apparatus is provided. The digital photographing apparatus includes a first optical system configured to acquire a wide-angle image including a subject, a second optical system configured to acquire a telephoto image with the subject zoomed, and a processor configured to determine whether to generate a synthesized image of the wide-angle image and the telephoto image based on one or more of an illuminance of the subject and a distance between the digital photographing apparatus and the subject.

Abstract: A plastic frame component includes: a first frame strip, configured to match with a side edge of the display component to support the display device; a light source, disposed on the first frame strip and configured to emit light; and an optical path adjuster, disposed on the first frame strip. The first frame strip includes a first portion and a second portion that are connected to each other. The first portion and/or the second portion accommodate/accommodates the light source and the optical path adjuster, such that the first portion can protrude from the side edge of the display component and go beyond the display surface after the plastic frame component is assembled with the total reflection display component, and that the light emitted by the light source shines onto a display area of the display component after being adjusted by the optical path adjuster.

Abstract: A reflective display device includes a thin-film transistor (TFT) array substrate, a front panel laminate (FPL), a front protection sheet, a back protection sheet, a light blocking layer, and a light source. The front panel laminate is located on the TFT array substrate, and has a transparent conductive layer and a display medium layer. The display medium layer is located between the transparent conductive layer and the TFT array substrate. The front protection sheet is located on the front panel laminate. The back protection sheet is located below the TFT array substrate. The light blocking layer at least covers a lateral surface of the back protection sheet. The light source faces toward a lateral surface of the front panel laminate, a lateral surface of the TFT array substrate, and the lateral surface of the back protection sheet.

Abstract: A display substrate, a manufacturing method thereof, and a display device are provided. The display substrate includes: a base substrate including a main portion and an edge portion located on at least one side of the main portion; a first pixel located on the edge portion and including a first light-emitting surface; and an angle-adjusting portion located between the first pixel and the edge portion and configured to provide an included angle between the first light-emitting surface and the edge portion at a position where the first pixel is located, the included angle being not zero.

Abstract: An LED lamp bead structure having a quasi-solar spectrum, comprising a first polar electrode (10), a plurality of LED chips (20), a plurality of resistors (30) and a circuit board (40); the first polar electrode (10) is in cooperation with the circuit board (40) to package the plurality of LED chips (20) and the plurality of resistors (30); the structure of the first polar electrode (10) is a three-dimensional structure comprising a plurality of planes, which freely simulates the solar spectrum and may take the most advantage of the energy-saving feature of LED semiconductors.

Abstract: The invention provides an LCD panel, manufacturing method thereof and display device. The LCD panel comprises an array substrate, the array substrate comprising: a first substrate, a buffer layer, disposed at one side of the first substrate, a first groove being disposed on a surface of the buffer layer away from the first substrate, and first, second, and third pixel electrodes; wherein the first pixel electrode, the second pixel electrode, and the third pixel electrode are successively arranged and insulated from each other, and the first pixel electrode, the second pixel electrode and the third pixel electrodes are all disposed on the surface of the buffer layer away from the first substrate, and the second pixel electrode is disposed in the first groove. The invention improves the transmittance at the same aperture ratio and the display quality for the LCD panel.

Abstract: Disclosed embodiments may include a device, system and method for providing a low cost device that can measure refractive errors very accurately via attachment to a smart phone. A disclosed device may use ambient light or a light source in simulating the cross cylinder procedure that optometrists use by utilizing the inverse Shack-Hartman technique. The optical device may include an array of lenslets and pinholes that will force the user to effectively focus at different depths. Using an optical device, in conjunction with a smart phone, the user first changes the angle of the axis until he/she sees a cross pattern (the vertical and horizontal lines are equally spaced). The user adjusts the display, typically using the controls on the smartphone, to make the lines come together and overlap, which corresponds to bringing the view into sharp focus, thus determining the appropriate optical prescription for the user.

Abstract: A free-form surface lens is made of a transparent resin forming an oblique projection optical system including a free-form surface mirror in a projection type video display apparatus, this lens includes a lens effective region having a surface on which a predetermined free-form surface is formed, and an edge surface formed to surround the lens effective region, the lens effective region and the edge surface in a part of a circumference surrounding the lens effective region where the edge surface is not formed are joined to each other by at least either one of a curved surface and a flat surface set so as not to change a direction of a tilt of the lens effective region in vicinity of the lens effective region, and an end surface including at least either one of the curved surface and the flat surface is set as a tapered surface.

Abstract: Wafer-level packaging of solid-state transducers (“SSTs”) is disclosed herein. A method in accordance with a particular embodiment includes forming a transducer structure having a first surface and a second surface opposite the first surface, and forming a plurality of separators that extend from at least the first surface of the transducer structure to beyond the second surface. The separators can demarcate lateral dimensions of individual SSTs. The method can further include forming a support substrate on the first surface of the transducer structure, and forming a plurality of discrete optical elements on the second surface of the transducer structure. The separators can form barriers between the discrete optical elements. The method can still further include dicing the SSTs along the separators. Associated SST devices and systems are also disclosed herein.

Abstract: According to the present invention, an imaging apparatus includes: an imaging unit which acquires image data by an imaging lens forming an image of an object on an imaging surface on which imaging pixels are arrayed; a designated position acquiring unit which acquires a designated position on the image data; a sighting device which allows a user to visually recognize an optical axial direction of the imaging lens; and a controller which, on the image data, adjusts a position of an object on an imaging optical axis of the imaging lens, based on the designated position.

Abstract: A method for modifying an audio scene and/or presenting additional information relevant to the audio scene includes capturing audio signals from the audio scene with a plurality of microphones; outputting an audio signal with a plurality of acoustical transducers; processing the captured audio signals, where the processing comprises one or more of filtering, equalization, echoes processing, and beamforming; separating and distinguishing audio signal sources using the processed audio signals; selecting at least one separated audio signal source; classifying the at least one selected separated audio signal source; retrieving additional information related to the classified audio signal source; and presenting the additional information in a perceptible form.

Abstract: Embodiments of the present invention generally provide a touch screen controller coupled to a touch sensor, a display, and a central processing unit. The touch screen controller is configured to detect first touch input received by the touch sensor and change a visual characteristic of the display upon detecting the first touch input. Detecting the first touch input and changing the visual characteristic are performed while the central processing unit is in a sleep state.

Abstract: An electronic stereoscopic microscope for detecting and reproducing pairs of stereoscopic part images comprises a camera unit having at least one electronic image sensor, a dog-leg objective for generating an image of an object on the image sensor, wherein the objective comprises a first leg facing the object to be imaged, a second leg facing the image sensor and including an angle with the first leg and deflection means provided between the legs, wherein the first leg extends along an imaging axis and the second leg extends along a detection axis. The microscope furthermore comprises an electronic viewfinder for reproducing stereoscopic part images detected by means of the image sensor, with the electronic viewfinder being arranged in an observation position or being movable into an observation position which is provided at a rear side of the objective in an extension of the imaging axis.

Abstract: A display device includes a display panel configured to display an image corresponding to image data input thereto and be divided into a plurality of display blocks, a backlight unit configured to supply light to the display panel and including a light guide panel and a main light source module which supplies light to the light guide panel, and a luminance boosting unit configured to supply boosted light to the plurality of display blocks based on the image data and including a plurality of light source modules arranged to correspond to the plurality of display blocks, respectively.

Abstract: An illuminating device includes a connecting portion supplied with power, a conversion circuit that converts power supplied from the connecting portion, a case having a tubular shape, a support body that divides the case in the radial direction, and a plurality of light emitting diodes provided on one surface of the support body. The illuminating device further includes a drive circuit that drives the light emitting diodes, a secondary battery provided on the other surface of the support body, a charge/discharge control circuit for the secondary battery, and a control section that lights the light emitting diodes by supplied power and charges the secondary battery. The control section permits lighting of the light emitting diodes by a discharge of the secondary battery in a state in which power supply is stopped.

Abstract: An image obtained by superimposing the image of the subject, which is displayed on the display screen of an electronic viewfinder, upon the optical image of the subject can be seen by the user looking through a finder unit. Display position on the display screen of the electronic viewfinder is shifted so as to correct for parallax between the finder unit and the solid-state electronic image sensing device. When the image of the subject is in focus, the optical image of the subject and the electronically captured image of the subject coincide. When the image of the subject is not in focus, the optical image and the electronically captured image are offset from each other. Correct focus can be achieved while observing the extent of offset between these images of the subject through the finder unit.

Abstract: A digital camera 10 includes an imaging device 21a, a finder device 15, a phase difference information analyzing portion 71 and a control portion 32. In the finder device 15, an image in which an OVF optical image formed by an objective optical system 65 and an image displayed on a display portion 61 are superimposed on each other can be observed through an eyepiece window 17. The phase difference information analyzing portion 71 determines a focus region and a non-focus region in a photographic subject imaged by the imaging device 21a. The control portion 32 makes control to display an image Eg for highlighting the focus region E in the OVF optical image on the display portion 61 in the state in which the OVF optical image can be observed through the eyepiece window 17.

Abstract: An image pickup apparatus arranged to set a correction value for adjusting a focus position obtained by a predetermined detection method at a time of photographing, is arranged such that if a limitation processing is executed with respect to selection of an AF frame at the time of photographing, a display manner at the time of selection of an AF frame which is to be used when the correction value is set and stored is made different between a selectable AF frame and an unselectable AF frame or is made by applying the same limitation as the limitation processing at the time of photographing.

Abstract: According to the preset invention, an optical viewfinder state in which an optical image of a photographic subject can be observed at an eyepiece part of a finder and an electronic viewfinder state in which a captured image of the photographic subject can be observed at the eyepiece part of the finder are switched when a first operation is carried out with a finger by an operation device, and a magnification (optical magnification) of a first finder optical system of the finder is changed when a second operation is carried out with a finger by the operation device in the optical viewfinder state. Thus, a user can perform photographing while freely observing the photographic subject by an operation of switching the finder (first operation) and an operation of changing the optical magnification of the finder (second operation) while looking through the finder.

Abstract: The image in an electronic viewfinder is made larger than the image in an optical viewfinder. Specifically, a finder unit is provided with a region that displays a portion of the display screen of an electronic viewfinder alongside a region that displays the optical image of a subject. When the camera has been set to an optical/electronic hybrid viewfinder, the optically formed optical image of a subject is displayed in the region and a portion of the image of the subject captured by a solid-state electronic image sensing device is displayed in the region. When the camera has been set to the electronic viewfinder, a landscape-oriented image of the subject captured by the solid-state electronic image sensing device is displayed across both of the regions.

Abstract: A display method for a finder includes, when at least one of a blown-out-highlight region and a blocked-up-shadow region is detected in an image signal indicating a subject image, setting a region corresponding to the detected region of a shutter unit placed in an optical path of an optical view finder in a non-light-shielding state, and setting regions other than the detected region in a light-shielding state; and superposing a subject image passing through the shutter unit and a subject image displayed on a display unit based on the image signal each other so that superposed subject images are made visible.

Abstract: A polarizer includes a first medium disposed at an emission side, a second medium disposed at an incident side, and a plurality of laminated structures provided at a predetermined grating period in a grating period direction, the laminated structure includes, in order from the first medium to the second medium, a first dielectric layer, a metallic layer, and a second dielectric layer between the first medium and the second medium, the polarizer is configured to reflect polarized light oscillating in a direction orthogonal to the grating period direction in a particular wavelength band and to transmit light other than the polarized light, and predetermined expressions are satisfied.

Abstract: An optical viewfinder is configured to be attached to a camera body with an interchangeable lens. The optical viewfinder includes: a Keplerian viewfinder optical system 301 including a scalable objective lens group 330; a stepping motor 305 configured to drive the objective lens group 330 along an optical axis; and a control circuit configured to control driving of the stepping motor 305 based on a result of detection by a PI 306. When a variable focal length lens (an interchangeable lens) is attached to a camera body, the control circuit controls driving of the stepping motor 305 in accordance with a focal length of the variable focal length lens and displays at least a photographing frame on an EVF panel 307.

Abstract: The present invention provides an imaging apparatus configured such that it is possible to check a long exposure subject image through a finder eye piece before actual imaging of long exposure imaging so as to recognize a subtle change in the tilt of the imaging apparatus caused when the apparatus gradually tilts over a long time period. In the imaging apparatus of the present invention, exposure control unit 60 controls an exposure time of a live view image, which is acquired by the imaging device 20, such that the exposure time is the same as that in the actual imaging, whereby it is possible to check the live view image from an eyepiece lens 52 of a finder.

Abstract: In a variable magnification viewfinder device, information displayed on a liquid crystal panel and a viewfinder image are combined with each other through a prism. When a variable power lens is inserted in a viewfinder optical path, viewfinder magnification is changed. Based on the change in the viewfinder magnification, brightness of a backlight unit is changed and luminance of the information displayed on the liquid crystal panel is changed. In a viewfinder field of view, the information and the viewfinder image are displayed at substantially the same brightness.

Abstract: An image capturing apparatus includes: a photographing optical system; an image capturing element; and a viewfinder device, in which the viewfinder device includes at least one variable magnification lens that may be inserted on and removed from an optical path of the viewfinder device, and a drive mechanism configured to drive the variable magnification lens, in which the image capturing apparatus further includes: a variable magnification lens control unit configured to supply a drive signal to the drive mechanism so as to control the insertion and removal of the variable magnification lens on and from the optical path, and perform a high-speed control to move the variable magnification lens through a maximum moving distance for a first time, and a low-speed control to move the variable magnification lens through the maximum moving distance for a second time that is longer than the first time.

Abstract: A view finder device includes a main body including a via hole, through which light of a subject transmits; and a transparent display formed of a transparent material that transmits the light, and disposed on an optical path of the light that has been transmitted through the via hole in order to transmit the light or to display images that overlap with the light transmitting the via hole when a signal is applied to the transparent display.

Abstract: In an illumination arrangement (1) for an image field delimiting frame (2) of a mixed-image viewfinder camera having an observation beam path (9) and a viewfinder beam path (3), the illumination arrangement is arranged in the viewfinder beam path (3) in the direction of light upstream of the image field delimiting frame (2), the illumination is formed by an active light source (14, 14?) and the viewfinder beam path (3) is mechanically delimited (16, 22) within the illumination apparatus (1) with respect to the light source (14, 14?).

Abstract: An optical viewfinder to observe an object image focused as a primary image by an objective lens includes a first display unit of self-luminous type and a second display unit of non-self-luminous type. The first display unit is arranged at a position closer to a primary image plane of the objective lens than the second display unit in a direction of an optical axis.

Abstract: According to the preset invention, an optical viewfinder state in which an optical image of a photographic subject can be observed at an eyepiece part of a finder and an electronic viewfinder state in which a captured image of the photographic subject can be observed at the eyepiece part of the finder are switched when a first operation is carried out with a finger by an operation device, and a magnification (optical magnification) of a first finder optical system of the finder is changed when a second operation is carried out with a finger by the operation device in the optical viewfinder state. Thus, a user can perform photographing while freely observing the photographic subject by an operation of switching the finder (first operation) and an operation of changing the optical magnification of the finder (second operation) while looking through the finder.

Abstract: An imaging device of the present invention includes: an imaging optical system; an imaging element that forms a subject image through the imaging optical system; a display unit that displays the subject image imaged by the imaging element, as a live view image; an optical viewfinder; a synthesis unit that synthesizes an optical image visually checked by the optical viewfinder and the live view image displayed by the display unit; a defocus amount calculation unit that calculates a defocus amount from a focusing state of the subject image; and a display control unit that displaces the live view image displayed on the display unit, with respect to the optical image, according to the defocus amount calculated by the defocus amount calculation unit, and that displays the subject image on the display unit so that the optical image fits the live view image when the defocus amount becomes zero.

Abstract: Provided are a polarization beam splitter 69 disposed between a subject side finder window 16 and a photographer side observation window 17 and disposed to be obliquely inclined at 45 degrees with respect to an optical axis L of an incident light from the subject side finder window 16, a polarizing filter installed at the incident light entering side of the polarization beam splitter 69 and configured to reflect or cut the s-polarized wave of the incident light; and a display device 61 configured to project a display information of the s-polarized wave on the polarization beam splitter 69 and project the display information reflected from the polarization beam splitter 69 in a direction of the photographer side observation window 17.

Abstract: An imaging device comprising: a first optical system formed by combining an optical system from an imaging lens to an image pickup element where a subject image is formed and an optical system from a display device where an electronic image of a subject representing an image formed at the image pickup element is displayed to an ocular unit of a finder; a second optical system which guides an optical image of the subject to the ocular unit; and a correcting device which performs, based on distortion aberration information about the first optical system and distortion aberration about the second optical system, distortion aberration correction so that distortion aberration equal to distortion aberration of the second optical system occurs in an electronic image of the subject and causes the electronic image to be displayed on the display device.

Abstract: Provided is an imaging apparatus that is convenient for use with a combination of an optical finder and an electronic finder and is capable of minimizing manufacturing costs while preventing visibility in the finder from being lowered. In the EVF mode, a control unit 32 of a digital camera 10 moves members 18b, 18c, and 18d of an objective optical system 18 toward the subject along an optical axis L, and inserts a display unit 19 to a position of an imaging plane 21 with a distance between the member 18d and the imaging plane 21 secured to be long. In the OVF mode, the control unit 32 fixes the objective optical system 18 at a position determined in advance, and retracts the display unit 19 from a gap between the objective optical system 18 and an eyepiece optical system 20.

Abstract: The present invention provides an imaging apparatus configured such that it is possible to check a long exposure subject image through a finder eye piece before actual imaging of long exposure imaging so as to recognize a subtle change in the tilt of the imaging apparatus caused when the apparatus gradually tilts over a long time period. In the imaging apparatus of the present invention, exposure control means 60 controls an exposure time of a live view image, which is acquired by the imaging device 20, such that the exposure time is the same as that in the actual imaging, whereby it is possible to check the live view image from an eyepiece lens 52 of a finder.

Abstract: There are provided: a half mirror provided in a finder device and transmitting an incident light image from a subject side and projecting the incident light image onto a photographer side finder view window side; a display panel provided in a position facing the half mirror in the finder device and displaying a taken image of the subject taken by an imaging device with given brightness so that the displayed taken image (EVF image) is reflected by the half mirror so as to be projected onto the photographer side finder view window side; and a display control portion changing brightness of the display image (EVF image) displayed on the display panel so that the brightness of the display image (EVF image) increases gradually to given brightness or the brightness of the display image (EVF image) further increases gradually from the given brightness.

Abstract: In the case where a parallax of left and right images is not appropriate, an influence on the health caused by stereoscopic viewing is preliminarily prevented. A camera and a television are connected (step S1) and a television size is input from the camera (step S2). A parallax adjustment amount v is created based on the input television size (step S3) and the left and right image data and the parallax adjustment amount v are transmitted to the television (step S4). When the television receives those (step S101), the parallax of the left and right images is adjusted by the parallax adjustment amount v (step S102). A region including the subject having the largest parallax among subjects in the left and right images is clipped and displayed in a small screen with the size of the display unit of the camera (step S103). The user checks the image displayed in the small screen (step S5) and when there is no problem, the left and right images are displayed on all over the television size in a 3D mode (step S104).

Abstract: An imaging method includes setting a manual focus mode for moving a focus lens according to an operation of an operation unit, generating a contrast image, which is an image in which an edge of a taken image is enhanced or extracted, and superimposing and displaying, in the case of the manual focus mode, the contrast image on an optical image of the object in an optical finder.

Abstract: Disclosed are an automatic focusing method which can automatically set a focus according to a change in an eyeball of a user and an apparatus for the same. The automatic focusing method includes generating distance data by calculating a distance from an eyeball of a user to a focus corresponding to a position at which the eyeball of the user looks; and determining, based on the distance data, a plane of focus including the focus.

Abstract: An optical viewfinder is configured to be attached to a camera body with an interchangeable lens. The optical viewfinder includes: a Keplerian viewfinder optical system 301 including a scalable objective lens group 330; a stepping motor 305 configured to drive the objective lens group 330 along an optical axis; and a control circuit configured to control driving of the stepping motor 305 based on a result of detection by a PI 306. When a variable focal length lens (an interchangeable lens) is attached to a camera body, the control circuit controls driving of the stepping motor 305 in accordance with a focal length of the variable focal length lens and displays at least a photographing frame on an EVF panel 307.

Abstract: An imaging device comprising: a camera mount; an imaging element; an optical finder capable of observing an optical image of an object which goes through an optical system different from the interchangeable lens; an electronic viewfinder capable of superimposing and displaying a taken image based on the image signal and the optical image; a lens information acquiring unit for communicating with the interchangeable lens mounted on the camera mount and acquiring information concerning the interchangeable lens; a communication determination unit configured to determine whether or not the interchangeable lens is communicable with the lens information acquiring unit; and a first display control unit for causing the electronic viewfinder to superimpose and display the taken image and the optical image if the communication determination unit determines that the interchangeable lens is not communicable with the lens information acquiring unit.

Abstract: A method for capturing an image, comprising: providing a switchable imaging apparatus including a display screen having a first display state and a second transparent state, an optical beam deflector switchable between a first non-deflecting state and a second deflecting state, a camera positioned in a location peripheral to the display screen, and a controller; setting the switchable imaging apparatus to the image capture mode by using the controller to set the display screen to the second transparent state and the optical beam deflector to the second deflecting state; using the camera to capture an image of the scene; setting the switchable imaging apparatus to the image display mode by using the controller to set the display screen to the first display state and the optical beam deflector to the first non-deflecting state; and displaying an image on the display screen.

Abstract: A method of providing an on screen display (OSD) in a mobile communication terminal using a Q-camera includes: entering into a viewfinder mode, and receiving image data inputted from a camera sensor as image data of the viewfinder mode when an operation mode of the mobile communication terminal switches into a camera mode; if an OSD menu is set, merging an OSD image corresponding to a setting value of the OSD menu with the image data of the viewfinder mode, and then updating a display screen of the mobile communication terminal with the merged data; and encoding the image data of the viewfinder mode to perform the photographing if there is a request for photographing. The actually changed OSD image is selectively employed to merge with the image data of the viewfinder mode to update the display screen, and thereby a partial OSD function can be realized.

Abstract: An image processing apparatus, computer-readable medium, and method that include synthesizing each frame of a dynamic picture so that each synthesized frame of the dynamic picture is displayed on a display, controlling the display to display a plurality of representative images, each of the plurality of representative images corresponding to a dynamic picture, and controlling the display to display a representative image, which corresponds to a dynamic picture that can be synthesized by the synthesizing step with a currently reproduced dynamic picture, in a distinguished fashion from other representative images.

Abstract: A collapsible viewing device for a camera LCD screen includes a base having an open camera end that is sized to fit around an associated camera display screen. An eyepiece opposite the base allows for viewing an image on the associated camera display screen. A flexible, light-blocking sidewall extends between the base and the eyepiece. The viewing device is configurable between an expanded use disposition in which the eyepiece is spaced from the base and a collapsed, compact disposition in which the sidewall is non-hingedly collapsed into the base.

Abstract: An imaging device comprising: a camera mount; an imaging element; an optical finder capable of observing an optical image of an object which goes through an optical system different from the interchangeable lens; an electronic viewfinder capable of superimposing and displaying a taken image based on the image signal and the optical image; a lens information acquiring unit for communicating with the interchangeable lens mounted on the camera mount and acquiring information concerning the interchangeable lens; a communication determination unit configured to determine whether or not the interchangeable lens is communicable with the lens information acquiring unit; and a first display control unit for causing the electronic viewfinder to superimpose and display the taken image and the optical image if the communication determination unit determines that the interchangeable lens is not communicable with the lens information acquiring unit.

Abstract: An imaging method includes imaging light from an object passed through an imaging optical system to acquire a taken image, changing an imaging magnification of the imaging optical system, and switching a finder magnification of a finder optical system different from the imaging optical system from a first finder magnification to a second finder magnification when the imaging magnification increases and switching the finder magnification from the second finder magnification to the first finder magnification when the imaging magnification decreases.

Abstract: A camera 10 has an imaging optical system, an imaging device 21a, and a finder device 15. The finder device 15 includes a variable magnification lens 64 which can be inserted into and removed from an optical path, and a shutter 62 which can switch between a closed state in which it interrupts light coming from a finder window 16 and an open state in which it allows passage of light coming from the finder window 16. The camera 10 is equipped with a driver 54 for controlling insertion and removal of the variable magnification lens 64 in accordance with the focal length of the imaging optical system, a driver 53 for controlling the state of the shutter 62, and a CPU 82. The CPU 82 controls the shutter 62 so that it is kept in the closed state while the variable magnification lens 64 is being moved.

Abstract: A finder optical system 20 includes a focusing glass 21 including a collection surface 21a that collects a light beam and a diffusion surface 21b that diffuses the collected light beam, an eyepiece 23 that receives a part of the diffused light beam, a photometry lens 24 arranged near the eyepiece 23, and a photometry sensor 25 on which an image of another part of the light beam diffused by the diffusion surface 21b is formed via the photometry lens 24, a plurality of micro lenses are arranged on the diffusion surface 21b of the focusing glass 21, at least one micro lens of the plurality of micro lenses has at least two radii of curvature on its cross section in a predetermined direction, and the at least one micro lens satisfies R1<R2 where R1 and R2 are radii of curvature in first and second areas, respectively.