Abstract: An audio and video streaming device includes a device main body and a lens cover. The device main body includes a power source, a lens element, an audio and video output unit and a sensing and controlling module. When the power source is in an on state and a relationship between the lens cover and the lens element is in an opened state, the sensing and controlling module issues an audio and video streaming signal to the audio and video output unit. When the power source is in the on state and the relationship between the lens cover and the lens element is in a closed state, the sensing and controlling module stops issuing the audio and video streaming signal, and the power source is maintained in the on state.

Abstract: A camera system of a mobile device includes: a sensor module disposed in a first body connected to a rotation member of the mobile device; and a lens module disposed in a second body connected to the rotation member. When the first body and the second body are rotated with respect to the rotation member to overlap each other, optical axes of the sensor module and the lens module correspond to each other and are operated as a common camera system, and the common camera system provides a first photographing mode and a second photographing mode with different viewing angles based on two focuses generated by a first geometry phase lens included in the lens module.

Abstract: A light shielding blade including a laminate in which a resin layer is sandwiched between two metal base materials, wherein the two metal base materials each have a specific rigidity of 20×106 [Pa·m3/kg] or more and a specific bending rigidity of 1.0 [Pa1/3·m3/kg] or more, and wherein the resin layer has an elastic modulus of 1 GPa or more and a thickness of 65 ?m or less.

Abstract: An aperture switching device is described that includes a base, a casing fitted to cover the base, and clamping parts fixed to the base. The clamping parts are driving power source input terminals and a shape memory alloy wire with two ends electrically connects the clamping parts. The base has a first light transmission hole, a rotary connecting part, a sliding groove, and a position regulating part. The casing has a second light transmission hole that corresponds to the first light transmission hole. A movable bump is connected to the shape memory alloy wire and slidably disposed within the sliding groove. An elastic member is disposed between the position regulating part and the movable bump. An optical aperture switching unit is positioned with one end portion mounted on the rotary connecting part and the end portion includes a switching slot mounted on the movable bump.

Abstract: An imaging device includes: an imager that is provided in a device body; a shutter that is provided in the device body, includes a support member and a shutter member; an actuator that is provided in the device body and moves the imager in a direction orthogonal to an optical axis to correct an amount of camera shake; and a plurality of elastic members that are disposed on at least one side and the other side of an imaginary straight line passing through a center of gravity of the shutter and orthogonal to the optical axis in a case where the plurality of elastic members are viewed in a direction of the optical axis and are in contact with the device body and the support member.

Abstract: To allow a fiber reinforced laminate to have sufficient light shielding ability and to improve adherence at the interface in the laminate and durability needed for it used for a shutter blade. A fiber reinforced laminate of the present invention includes: a substrate; a black coating; and a fiber reinforced plastic layer, characterized in that the black coating is provided between the substrate and the fiber reinforced plastic layer and contains a binder resin, black particles and a filler.

Abstract: Disclosed is a shielding device, which includes: a casing having an open portion; a deformable unit installed at the casing and configured to be deformed in one direction at a predetermined temperature; a power transmission unit connected to the deformable unit to transmit a power generated by the deformation of the deformable unit; and a shielding unit installed at the casing and connected to the power transmission unit to receive the power from the power transmission unit, the shielding unit being configured to open or close the open portion, wherein the deformable unit is deformed at a first temperature to be expanded or compressed, and the shielding unit closes the open portion by means of the deformation of the deformable unit.

Abstract: A photogrammetric system includes a camera installed in a movable body and including a shutter unit that moves an exposed portion across an imaging surface from one side to the other side for exposure to capture an image, a measuring device configured to measure a position at which the camera captures the image, and a photogrammetry data generator configured to extract a feature point from the image captured by the camera, calculate a feature point capture position at which the feature point is captured based on a measurement result of the measuring device and a moving time of the exposed portion, and generate photogrammetry data including the feature point capture position.

Abstract: The invention relates to a prepreg comprising a structural layer of conductive fibres comprising thermosetting resin in the interstices, and a first outer layer of resin comprising thermosetting resin, and comprising a population of conductive free filaments located at the interface between the structural layer and the outer resin layer which, when cured under elevated temperature, produces a cured composite material comprising a cured structural layer of packed conductive fibres and a first outer layer of cured resin, the outer layer of cured resin, comprising a proportion of the population of conductive free filaments dispersed therein, and to a process for manufacturing prepregs wherein the electrically conductive fibres pass a fibre disrupting means to cause a proportion of the fibres on an external face of the sheet to become free filaments.

Abstract: A process for the production of a multi-layer composite comprising applying a coating layer from a pigmented coating composition A onto the back face of a transparent plastic film and then applying an NIR-opaque coating layer from a pigmented coating composition B, wherein the pigment content of coating composition A consists 50 to 100 wt. % of black pigment with low NIR absorption and 0 to 50 wt. % of further pigment, which is selected in such a way that coating layer A? exhibits low NIR absorption and that the multi-layer composite exhibits a brightness L* of at most 10 units, wherein the pigment content of coating composition B is either a pigment content PC1 consisting 90 to 100 wt. % of aluminum flake pigment and 0 to 10 wt. % of further pigment, which is selected in such a way that NIR-opaque coating layer B? exhibits low NIR absorption, or a pigment content PC2 comprising <90 wt.

Abstract: A shutter lag from when a shutter button is fully pressed to when an exposure is actually performed may be reduced by performing a precedence operation for a state transition of a shutter when the shutter button is half pressed.

Abstract: A barrier mechanism of an optical apparatus capable of preventing generation of a gap between barrier blades and an opening part in a closed state without complicating a configuration. Barrier blades are arranged overlapping in an optical axis direction, and are driven by a barrier driving ring to rotate in an opening-and-closing direction for opening and closing the opening part. A barrier barrel is arranged at the outer peripheral side of the barrier driving ring, and holds the barrier blades. The barrier blades includes a main barrier blade that is arranged at an image surface side and is rotatably supported by the barrier barrel with a first shaft, and auxiliary barrier blades that are rotatably supported by a second shaft that is provided on the subject side of the main barrier blade. The first shaft and the second shaft are arranged in parallel but are not coaxial.

Abstract: A shutter holding mechanism includes: a shutter substrate which is provided inside a camera body and in which a focal-plane type shutter unit is fixed; a pressing unit arranged between the camera body and a side of one end portion of the shutter substrate, the pressing unit pressing the shutter substrate to a side of another end portion of the shutter substrate relative to the camera body; and a damper unit arranged in a part on a side of the camera body corresponding to the side of the other end portion of the shutter substrate, which is a side opposite to a part where the pressing unit is arranged, in a direction along a travel direction of a shutter blade of the shutter unit, the damper unit absorbing movement of the shutter substrate pressed by the pressing unit.

Abstract: To provide a blade drive device capable of suppressing operation failures due to the leakage flux. The blade drive device 1 attached to a camera module including a lens and a lens drive device 60 having plural permanent magnets 61 arranged with gaps around an optical axis P of the lens in an annular manner so as to overlap the camera module in an axial direction of the optical axis P, which includes a lower plate 2 having an opening 4 formed around the optical axis P, blades 20 regulating the opening 4 and respective actuators 10A, 10B arranged in the lower plate 2 and driving the blades 20. Each of respective actuators 10A, 10B is arranged in a position corresponding to a gap between a pair of adjacent permanent magnets 61 seen from the axial direction.

Abstract: An imaging device includes: a focal plane shutter including: a board including an opening; a leading shutter and a trailing shutter opening and closing the opening; a leading shutter actuator and a trailing shutter actuator respectively driving the leading shutter and the trailing shutter; and a restrict portion that restricts reciprocating movement ranges of the leading shutter and the trailing shutter, an image pickup element which light enters through the opening; and a drive control portion.

Abstract: A compact optic design is disclosed in which an image capture device's cover glass (or other transparent material) is imbued with optic power and affixed directly to the device's housing. A lens barrel, in which one or more additional lens elements are mounted, may be aligned with the optical lens formed by the cover glass and an image sensor to provide a complete camera module.

Abstract: A focal-plane shutter includes: first, second, and third boards each including an opening and arranged in an optical axis direction passing through the openings; a first blade arranged between the first and second boards and capable of opening and closing the openings; a second blade arranged between the second and third boards and capable of opening and closing the openings; first and second arms arranged between the second and third boards, connected to the second blade, made of synthetic resins, and capable of rotating about respective different fulcrums; and a drive member connected to the first arm and driving the first arm.

Abstract: An image photographing apparatus capable of maintaining the size of a sensor plate even in a case when the size of a shutter assembly is increased, the image photographing apparatus including a shutter assembly configured to control an amount of light entered, an image sensor disposed at a rear of the shutter assembly to change the light to an electrical signal, a sensor plate configured to support the image sensor, and a main frame configured such that the shutter assembly and the sensor plate are be mounted thereon, wherein the main frame includes a frame base, and a shutter mounting portion protrudedly formed from the frame base such that the shutter assembly is mounted in a sliding manner on the shutter mounting portion.

Abstract: An ophthalmologic imaging apparatus includes an observation light source configured to generate infrared light for illuminating a subject's eye via an illumination optical system, an imaging unit configured to receive light returned from the subject's eye via an imaging optical system, and an electronic shutter control unit configured to refresh charge generated caused by light received by the imaging unit in response to turning off of the observation light source.

Abstract: An electronic apparatus is disclosed. The electronic apparatus includes: an imaging device which converts light into an image signal; a lens unit positioned in front of the imaging device to form an image on the imaging device from light incident from an object; a shutter unit interposed between the lens unit and the imaging device to expose the imaging device to the light incident from the object based on a predetermined exposure time and that includes a shutter curtain that regulates the light incident from the object; and a measurement unit which measures an actual exposure time of the shutter unit. The measurement unit is positioned behind the shutter curtain and includes a light-receiving sensor which receives light incident on the measurement unit from the light incident from the object other than the light of the effective image area incident on the imaging device.

Abstract: A friction member for a brake mechanism in a camera shutter is provided. The friction member includes at least two carbon nanotube composite layers stacked on each other, each carbon nanotube composite layer includes a polymer and a carbon nanotube structure including a number of carbon nanotubes substantially oriented along a same direction. An angle defined by the carbon nanotubes oriented along the same direction in adjacent carbon nanotube composite layers ranges from greater than 0 degrees, and less than or equal to 90 degrees. The camera shutter using the friction member is also provided. The camera shutter includes a brake mechanism and a drive mechanism including a blade driving lever having a moving path. The brake mechanism includes two abovementioned friction members and a brake lever clamped between the two friction members. The brake lever is located at a termination of the moving path to brake the blade driving lever.

Abstract: The present invention relates to methods of manufacturing ultra-compact camera modules, adjusting them, post production, to precise focal point settings, and sealing the precisely aligned assembly to maintain the focal point. Also, the invention specifically relates to ultra-compact camera module apparatuses.

Abstract: A barrier mechanism includes a barrier blade group (G1) having barrier blades (A1), (B1), (C1) which are rotatably retained by a single spindle (S11); an elastic member (E11) provided to the spindle (S11) substantially coaxially with a rotating center of the barrier blade group (G1), and configured to generate torque for driving the barrier blade (A1) to rotate,' and a frame member formed by a barrier cover (F1) and a barrier (F2) each including an aperture serving as a window for opening an effective optical path of an optical lens, and configured to house the barrier blade group (G1) and the elastic member (E1) between these members. The spindle (S11) includes a flange portion (S11f) configured to separate the barrier blade group (G1) from the elastic member (E11) in a direction of an optical axis.

Abstract: An integrated lens barrel for a miniature camera is disclosed. The lens barrel can include components such as a shutter, an autofocus mechanism, a zoom mechanism, and/or an image stabilization mechanism. These and/or components can define a portion of the lens barrel that increases the length of the lens barrel. An electrostatic MEMS actuator can be used to effect movement of the autofocus mechanism, zoom mechanism, and/or image stabilization mechanism. Integrating the shutter, autofocus mechanism, zoom mechanism, and/or image stabilization mechanism into the lens barrel facilitates the construction of a substantially smaller camera that is suitable for use in personal electronic devices, such as cellular telephones.

Abstract: A camera system includes a body defining a cavity therein, and a camera attached to the body within the cavity and including a lens. The camera system also includes a shape memory alloy transitionable between a first state and a second state in response to a thermal activation signal, and a wiper configured for wiping debris from the lens. The wiper is attached to the camera and is actuatable by the shape memory alloy. The shape memory alloy transitions between the first state and the second state to actuate the wiper so that the wiper contacts and translates across the lens and thereby wipes debris from the lens.

Abstract: An apparatus and method of adjusting an auto focus are provided. The apparatus includes: an imaging pickup device for generating an image signal by capturing light passing through an imaging lens; a shutter for controlling light exposure of the image pickup device; a focus detector that calculates a contrast value from the image signal and detecting a focus from the contrast value; and a release controller for controlling a release operation constituting a photographing operation of a still image, wherein the release controller includes, as driving modes, a first mode that directs a focus lens included in the imaging lens to be driven while driving the shutter, and a second mode that directs the focus lens not to be driven while driving the shutter. Accordingly, a photographing time is reduced.

Abstract: An electronic device may be provided with shape memory structures. The shape memory structures may be used to form actuators for a camera shutter, an actuator for moving an optical filter, or other actuators in an electronic device. A camera shutter may have an opaque shutter member that is movable between a first position in which the shutter is closed and blocks light from a digital image sensor and a second position in which the shutter is open and allows light to reach the digital image sensor. The camera shutter may have an associated color filter structure. Shape memory wire may be configured to form a loop that heats upon application of a signal or may be configured to form a twisting or linear actuator. The camera shutter may be provided with a controllable aperture.

Abstract: A light projector for operation during a show that contains theatrical haze. The light projector may include a light source, a lens, a fan, and a housing having an inner chamber. The lens may have a first side and a second side. The first side of the lens may be contained within the inner chamber of the housing. The second side the lens may be outside of the inner chamber of the housing. The fan may be configured to be operated to generate air flow inside the inner chamber of the housing. A substantial portion of the air flow may be directed to impinge upon the first side of the lens to cause de-fogging of theatrical haze condensate on the first side of the lens.

Abstract: A light transmittance adjusting device is provided, including a first electrode, a second electrode, and a first elastomer layer disposed between the first and second electrodes. A light transmittance of the first elastomer layer is variable depending on a voltage applied thereto.

Abstract: An image pickup apparatus includes an image pickup unit, a shutter unit located at a front surface at a subject side of the image pickup unit, a first optical member disposed at a subject side of the shutter unit, and preventing dust particles from entering the shutter unit, a second optical member disposed at the image pickup unit side of the shutter unit, and preventing dust particles from entering the shutter unit, and a vibration applying vibration member disposed on at least one of the first optical member and the second optical member, and vibrating the first optical member or the second optical member at a position outside a region where a subject light transmits.

Abstract: A shutter control device performs photography by operating a shutter housed in a lens barrel, and comprises a communication port, a shutter control unit and a memory. The communication port transmits and receives signals between the camera body and the lens barrel. The shutter control unit is provided in the camera body to output a shutter control signal. The memory is provided in the lens barrel to store shutter delay information regarding a time delay from when the shutter control signal is input to the lens barrel until when the shutter is closed. The shutter control unit receives the shutter delay information from the lens barrel and transmits the shutter control signal to the lens barrel through the communication port, ahead of an exposure time as determined by photometry, by an amount of time equal to the time delay.

Abstract: An apparatus and method of adjusting an auto focus are provided. The apparatus includes: an imaging pickup device for generating an image signal by capturing light passing through an imaging lens; a shutter for controlling light exposure of the image pickup device; a focus detector that calculates a contrast value from the image signal and detecting a focus from the contrast value; and a release controller for controlling a release operation constituting a photographing operation of a still image, wherein the release controller includes, as driving modes, a first mode that directs a focus lens included in the imaging lens to be driven while driving the shutter, and a second mode that directs the focus lens not to be driven while driving the shutter. Accordingly, a photographing time is reduced.

Abstract: A multi-resolution lens system includes a relay lens configured to be directed toward a field-of-view (FOV) and receive a first plurality of image photons emanating from the FOV, a high-resolution lens positioned to receive a second plurality of image photons from the FOV and to pass the second plurality of image photons toward the relay lens, and a shutter device positioned to receive over an area thereof the image photons of the FOV that pass through the relay lens, and simultaneously receive overlaid on a portion of the area thereof the image photons from the portion of the FOV that pass through the high-resolution lens and toward the relay lens.

Abstract: A blade speed adjustable mechanism includes: a board having an opening; a shutter blade opening or closing the opening; a drive lever supported by the board and bringing the shutter blade into an overlapped operation or an expanded operation; a biasing member engaging the drive lever and biasing the shutter blade in an overlapped direction or in an expanded direction; a ratchet member engaging the biasing member and having ratchet teeth; an engagement member holding the ratchet member at a desired stop position and adjusting an biasing force of the biasing member by changing the stop position. The engagement member has a plurality of pawl portions different from each other in length. The pawl portion engages the ratchet tooth to hold the ratchet member at the stop position. A difference in length between the pawl portions is shorter than a distance corresponding to a pitch of the ratchet teeth.

Abstract: A blade drive device includes: a blade; a drive source that drives the blade; and a chassis that has an opening opened and closed by the blade and that houses the blade and the drive source. The drive source includes: a rotor that is rotatably supported; a stator around which a coil for excitation is wound and which applies a rotational force to the rotor. The stator is arranged to surround a periphery of the opening and has a rectangular shape.

Abstract: An electronic device may be provided with shape memory structures. The shape memory structures may be used to form actuators for a camera shutter, an actuator for moving an optical filter, or other actuators in an electronic device. A camera shutter may have an opaque shutter member that is movable between a first position in which the shutter is closed and blocks light from a digital image sensor and a second position in which the shutter is open and allows light to reach the digital image sensor. The camera shutter may have an associated color filter structure. Shape memory wire may be configured to form a loop that heats upon application of a signal or may be configured to form a twisting or linear actuator. The camera shutter may be provided with a controllable aperture.

Abstract: When a second cam gear and a first cam gear rotate one turn, a shutter device changes to a first state, a second state, and a third state in this order. In the first state, the second cam gear charges a mirror lever drive spring and a blade drive spring, so that the first cam gear holds the blade lever. In the second state, the second cam gear releases charging of the mirror lever drive spring and charges the blade drive spring, so that the first cam gear releases holding of the blade lever. In the third state, the second cam gear releases charging of the mirror lever drive spring and charging of the blade drive spring, so that the first cam gear releases holding of the blade lever.

Abstract: A shutter base plate is formed with a first shaft parallel to an optical axis of a photographic light flux, and a blade lever rotates about the first shaft to drive a first blade and a second blade. A drive lever rotates about the first shaft to drive the blade lever. A second cam gear rotates about a second shaft formed on the shutter base plate in parallel to the first shaft to charge a mirror drive spring. A first cam gear rotates about a third shaft formed on the shutter base plate in parallel to the first shaft to switch between a state in which the blade lever is held so that the first blade and the second blade close the aperture and a state in which holding of the blade lever is released.

Abstract: A shutter base plate is formed with a first shaft parallel to an optical axis of a photographic light flux, and a drive lever rotates around the first shaft to drive a first blade and a second blade. A mirror lever rotates around a second shaft parallel to the first shaft to drive a main mirror. A second cam gear rotates around a third shaft parallel to the first shaft to charge a mirror lever drive spring and a blade drive spring.

Abstract: An ophthalmologic imaging apparatus includes an observation light source configured to generate infrared light for illuminating a subject's eye via an illumination optical system, an imaging unit configured to receive light returned from the subject's eye via an imaging optical system, and an electronic shutter control unit configured to refresh charge generated caused by light received by the imaging unit in response to turning off of the observation light source.

Abstract: A barrier device in which excessive relative displacements of barrier blades in an optical axis direction are restricted to ensure a normal opening and closing operation of the barrier blades. The barrier device has second, first, and third barrier blades disposed in this order in the optical axis direction. Restriction portions of the first barrier blades have through portions extending from shielding portions in the optical axis direction and extending through elongated holes of the second barrier blades, and have extension portions extending parallel to the shielding portions from image-plane-side ends of the through portions and positioned on the image plane side of the second barrier blades. During the entire stroke of opening and closing of the barrier blades, the extension portions can be engaged with the shielding portions, whereby the second barrier blades are restricted from moving away from the first barrier blades.

Abstract: An image capturing apparatus includes a shutter spring which urges a shutter drive member for driving shutter blades, a shutter charge unit which is used to charge the shutter spring, and is switched between a fixed state in which a charge operation of the shutter spring is complete, and the shutter drive member is fixed and a released state, and a drive unit which drives the shutter charge unit. When a second determination unit determines that a switching ready state of a mirror from a mirror-down state to a mirror-up state is set when a first determination unit determines that a charge operation of the shutter spring is complete, the drive unit is controlled to drive the shutter charge unit to the released state without latch the shutter charge unit in the fixed state after the charge operation of the shutter spring is complete.

Abstract: An optical unit (1) includes a first attachment/detachment portion (2) to which an imaging optical system (31) is detachably attached, an optical path division means (3), a finder optical system (6), and a second attachment/detachment portion (4). An imaging unit includes a third attachment/detachment portion (11) disposed at a position corresponding to the second attachment/detachment portion (4) and an imaging element (12, 12?). An imaging body (20, 20?) includes the optical unit (1) and imaging unit (10, 10?) which are detachably attached to each other through the second and third attachment/detachment portions (4) and (11).

Abstract: A shutter control device performs photography by operating a shutter housed in a lens barrel, and comprises a communication port, a shutter control unit and a memory. The communication port transmits and receives signals between the camera body and the lens barrel. The shutter control unit is provided in the camera body to output a shutter control signal. The memory is provided in the lens barrel to store shutter delay information regarding a time delay from when the shutter control signal is input to the lens barrel until when the shutter is closed. The shutter control unit receives the shutter delay information from the lens barrel and transmits the shutter control signal to the lens barrel through the communication port, ahead of an exposure time as determined by photometry, by an amount of time equal to the time delay.

Abstract: A shutter includes a driver ring, a plurality of shutter blades coupled to the drive ring such that movement of the drive ring transitions the plurality of shutter blades between an open position exposing a central aperture of the shutter, and a closed position blocking the central aperture, and a first stop and a second stop movable relative to the first stop. At least one of the first and second stops limits travel of the shutter blades.

Abstract: An exemplary mechanical shutter includes a base with a through hole defined therein, a blade arranged on the base, two shape memory alloy units, and a control unit. Each of the two shape memory alloy units includes a first end and a opposite second end. The first end of the shape memory alloy element is attached to the base, and the second end is attached to the blade. The control unit is configured for controlling the two shape memory alloy units to selectively deform into a first shape, or into a second shape. In particular, the two shape memory alloy units each straighten to a first shape (straight shape) and move the blade to cover the through hole. In addition, the two shape memory alloy units each deform to a second shape (spring coil shape) and thus move the blade away from the through hole to expose the through hole.

Abstract: A robust, compact, lightweight, low energy, low cost, and low noise mechanical mechanism suitable for military and other demanding applications includes a Geneva drive that transitions a camera shutter or other element between two positions and locks the shutter or other element in place between transitions, thereby isolating the remainder of the mechanism from shutter vibrations and torques. Accordingly, the mechanism controlling the Geneva drive need not be especially robust even for military applications, and can be similar in size, weight, energy consumption, and noise to a conventional shutter mechanism. The driving mechanism can include a rotary actuator or a linear actuator with a rack gear. In various embodiments the driving mechanism includes a piezomotor. In certain embodiments, the starting and ending positions of the mechanism are determined by sensors, and in some embodiments the starting and ending positions are adjustable.

Abstract: An imaging body (1) includes: an attachment/detachment portion (2) to which an imaging optical system (12) is detachably attached; an imaging element (3); and a conversion optical system (4). The conversion optical system (4) is constituted by front side lens systems (4a, 4b) and a rear side lens system (4c). The conversion optical system (4) forms an intermediate image between the attachment/detachment portion (2) and imaging element (3). A shutter (5) is provided near the intermediate image.

Abstract: A shutter includes a first insulating substrate, a first electrode layer, a second insulating substrate, a second electrode layer, and a light-blocking layer. The first electrode layer is formed on the first insulating substrate. The first electrode layer includes layer portions insulated from one another. The second electrode layer is formed on the second insulating substrate. The light-blocking layer is disposed between the first and second electrode layers. The light-blocking layer includes a liquid and opaque and charged balls movably distributed in the liquid. At least one layer portion is selected. The at least one selected layer portion and the second electrode layer are connected to respective positive voltage and negative voltage to generate an electric field to the charged balls. The charged balls are attracted by the electric field to arrange in a configuration corresponding to the at least one selected layer portion to block light.

Abstract: A method for removing shutter areas in an image, in particular an x-ray image is provided. Edges are examined in a multi-resolution image pyramid and evaluated to determine potential shutter blade candidates defining the shutter areas. Heuristic rules and/or an automatic classifier such as a Neuronal Network, are applied to distinguish true shutter blades from false positives. The rule set and the classifier are based on a set of features extracted from the potential shutter blade candidates as well as predetermined knowledge of the expected placement of the shutter, human anatomy. Up to four shutter blades are expected to be detected and based on these blades, the bright areas in the image that occur due to the shutters are removed.