Abstract: A lens assembly includes a first D-cut lens and a lens barrel surrounding a portion of a side surface of the first D-cut lens. The side surface of the first D-cut lens includes a linear portion, and the lens barrel is configured to expose at least a portion of the linear portion of the first D-cut lens in a direction perpendicular to an optical axis.

Abstract: An image capture device is described that includes a body; a mounting structure that is connected to the body; an integrated sensor-lens assembly (ISLA) that defines an optical axis and extends through the body and the mounting structure; and an accessory that is releasably connectable to the mounting structure via rotation through a range of motion less than approximately 90 degrees. The mounting structure and the accessory include corresponding angled bearing surfaces that are configured for engagement such that rotation of the accessory relative to the mounting structure creates a bearing effect that displaces the accessory along the optical axis to thereby reduce any axial force required during connection and disconnection of the accessory.

Abstract: A lens selector for selectively exposing one camera lens and covering other camera lenses of a cell phone or the like is shown and described. The lens selector comprises a base which grips the cell phone and a lens cover movable between two or more positions. The lens cover may slide along the base when moving between positions. An arm resiliently biased into an engaged positions may lock the lens cover into a selected position on the base. The lens selector may substantially cover that side of the cell phone having lenses, and may grip edges of the cell phone. The lens selector may include a socket for centering an associated cell phone with respect to an optical device such as a spotting scope, so that the cell phone may capture images visible through the scope.

Abstract: A camera module includes a metal yoke, a holding base, a plastic barrel, a plurality of plastic lens elements, a leaf spring pair and a coil element. The holding base is connected to the metal yoke and defines an inner space. The holding base has a through hole which is corresponding to an opening of the metal yoke. The plastic barrel is movably disposed in the inner space. The plastic lens elements are disposed in the plastic barrel. The leaf spring pair includes two leaf springs which are located on a same plane and connected to the plastic barrel. The coil element surrounds an outer surface of the plastic barrel and electrically connected to the leaf spring pair, wherein two ends of the coil element is connected to the leaf springs by a thermal pressing method.

Abstract: An accessory that can be attached to a camera body, the camera body including a first camera-side clock terminal that outputs a first clock signal, a second camera-side clock terminal to which a second clock signal is input, and a first camera-side power supply terminal that outputs first power, the accessory includes: an eighth terminal that is brought into contact with the first camera-side clock terminal; a tenth terminal that is brought into contact with the second camera-side clock terminal; and a second terminal that is brought into contact with the first camera-side power supply terminal, wherein: a distance between the tenth terminal and the second terminal is longer than a distance between the eighth terminal and the second terminal.

Abstract: An accessory that can be attached to a camera body, the camera body including a first camera-side clock terminal that outputs a first clock signal, a second camera-side clock terminal to which a second clock signal is input, and a first camera-side power supply terminal that outputs first power, the accessory includes: an eighth terminal that is brought into contact with the first camera-side clock terminal; a tenth terminal that is brought into contact with the second camera-side clock terminal; and a second terminal that is brought into contact with the first camera-side power supply terminal, wherein: a distance between the tenth terminal and the second terminal is longer than a distance between the eighth terminal and the second terminal.

Abstract: Provided is a lens module, including a lens barrel, a set of lenses and a light-blocking member. The set of lenses includes a first lens disposed adjacent to the light-blocking member. The first lens includes a first optical portion for imaging and a first fixing portion surrounding the first optical portion. The lens module further includes a first positioning structure configured to fix the first lens to the light-blocking member. The first positioning structure includes a first positioning part arranged on one of the first fixing portion and the light-blocking member, and a first holding part arranged in the other one of the first fixing portion and the light-blocking member; the first holding part holds the first positioning part. The lens module according to the present disclosure has an improved stability and reliability of fixation between the lens and the light-blocking member.

Abstract: A mobile device case for coupling around a miniature camera-enabled mobile device a case shutter button mechanism for actuating the miniature camera module of the mobile camera system. A half-press or single tap triggers a precapture settings menu and a full-press or double tap triggers capture of an image.

Abstract: A lens system according to a first aspect of the present invention includes an interchangeable lens, and an accessory which is mounted between the interchangeable lens and a camera body.

Abstract: An imaging apparatus includes a ranging light source, an aperture that includes a through hole through which light emitted from the ranging light source passes, and a ranging lens disposed on an optical path of the light emitted from the ranging light source, wherein the aperture includes a plurality of press-fit convex parts projecting in a direction opposite to the ranging light source, and the ranging lens is press-fitted into a region surrounded by the plurality of press-fit convex parts.

Abstract: A mobile device case includes a soft protective housing defining a camera-lens aperture and a touchscreen display aperture, and a lens attachment interface including a capture plate protruding into the camera-lens aperture sufficient to overlap a coupling interface of a removable lens assembly along the optical path of the miniature camera module, and a catch to facilitate stable locking coupling of the removable lens assembly in optical alignment with the miniature camera module.

Abstract: An imaging apparatus includes an imaging element, a lens unit that focuses light on the imaging element, a light source located around the lens unit, a light guide body that surrounds the lens unit and that guides light emitted from the light source, and a framing member surrounding the light guide body, wherein the light guide body includes an engagement concave part that engages an engagement convex part of the framing member.

Abstract: A sanitary fitting, in particular a flush-mounted sanitary fitting, with a rosette that covers a subassembly of the sanitary fitting and that has a trim part on the visible side and a mounting part that is covered by the trim part and can be clamped to the subassembly with an installation wall interposed. The trim part and the mounting part are joined to one another by a separate bayonet ring element that has at least one locking element which can be moved along the circumference of the rosette in a direction of actuation between a locking position, in which the trim part is installed on the mounting part, and a release position, in which the trim part is detachable from the mounting part.

Abstract: A device for detecting and determining deformations on a structure surface containing diffractive stress indicator elements comprises a portable computing device having a camera, a processor, a memory, and a display screen, and a casing for conformably enclosing the portable computing device. In one embodiment, the casing includes an elongated light source, a first window positioned to provide access to the display screen of the portable computing device, and a second window positioned to allowing the light source to emit a band of light outside of the casing, and a port hole aligned with the camera of the portable computing device. When the device is positioned proximate to the structure, the elongated light source emits a band of illumination onto the diffractive stress indicator elements, the diffractive elements diffract the emitted radiation and the camera of the portable computing device receives at least a portion of the diffracted radiation.

Abstract: This invention provides a vision system housing having a front plate assembly that accommodates a plurality of lens mount types. The front plate includes a central aperture that is located at a predetermined axial (camera axis) distance from a plane of an image sensor. The aperture is stepped from a wider diameter adjacent to the front to a narrower diameter more adjacent to the sensor. This arrangement enables threaded mounting of a plurality of lens mount types, for example M12 and C-Mount. The exterior (front) surface of the front plate includes threaded holes and a removable spring clip arrangement constructed to accommodate a liquid lens positioned over the aperture with an associated lens assembly mounted within the aperture and in optical communication with the liquid lens. The lens is operated using an electrical connection provided by a cable that interconnects with a multi-pin socket positioned on the front plate.

Abstract: Provided is a technology enabling an imaging apparatus and an interchangeable lens to appropriately perform initialization processes. An interchangeable lens includes one or more lens-side processors configured to perform initialization of a plurality of lens-side elements. The one or more lens-side processors is further configured to transmit lens-side initialization element information indicating the plurality of lens-side elements to an imaging apparatus. The technology can be applied to, for example, a camera system including a detachable interchangeable lens and an imaging apparatus serving as a camera body side.

Abstract: A solid immersion lens holder includes a first member having a first opening disposing a spherical face portion therein so that a part of the spherical face portion protrudes toward an objective lens side and a second member having a second opening disposing a contact portion therein so that a contact face protrudes toward a side opposite to the objective lens side. The first member includes three protrusion portions extending from an inner face of the first opening toward a center of the first opening and configured to be contactable with the spherical face portion.

Abstract: A multi-lens system can be configured to be selectively attachable to a mobile electronic device having a user-facing onboard camera lens and an outward-facing onboard camera lens. The multi-lens system can attach to the mobile electronic device in at least a first position and a second position. The first lens component in the first position is configured to be in optical alignment with the user-facing onboard camera lens and simultaneously the second lens component is configured to be in optical alignment with the outward-facing onboard camera lens. The first lens component in the second position is configured to be in optical alignment with the outward-facing onboard camera lens and simultaneously the second lens component is configured to be in optical alignment with the user-facing onboard camera lens. A portable attachment accessory can be configured to be selectively attachable to a lens system that is configured to receive a portion of a mobile electronic device.

Abstract: In some embodiments, an auxiliary optical device for a mobile electronic device has a first portion positionable adjacent a first face of the mobile device and a second portion movably coupled to the first portion and positionable adjacent a second, opposite face of the mobile electronic device. In some embodiments, the auxiliary optical device attaches to the mobile electronic device by clamping or otherwise contracting or squeezing upon a portion of the mobile electronic device.

Abstract: There is provided a camera that includes a body and two or more kinds of groups of contacts provided on the body. The two or more kinds of groups of contacts are configured to be coupled to respective two or more kinds of lenses that include different lens-side mounts.

Abstract: A multipolarized signal terminal connector for an accessory, which is applied to an accessory shoe device having a defined shape. The signal terminal connector includes a first surface opposed to an attaching direction of an accessory, a first terminal row provided the first surface, a second surface which is inclined with respect to the first surface by a predetermined angle, and a second terminal row provided in the second surface. The second surface is inclined with respect to the first surface, in a predetermined direction orthogonal to the attaching direction of the accessory and a direction in which the terminals of the second terminal row are arranged, and is displaced with respect to the first surface in the predetermined direction.

Abstract: The connecting module is converted to a third state from a first state through a second state. The connecting module includes a fourth part, a first part, a second part and a third part, which are sequentially disposed in an axial direction. The first part is fixed to the third part. From the first state to the third state, the fourth part rotates together with the first part. From the first state to the second state, the first part rotates with respect to the second part, and the second part moves with respect to the third part in the axial direction.

Abstract: A socket assembly including a housing, a base and a locking ring. The housing includes a recessed interior capable of receiving and securing the base. The locking ring cooperates with the housing and the base to secure the base against rotation. The base preferably includes a lashing fixture (e.g., cloverleaf, crossbar, or other) for engaging with a lashing hook.

Abstract: This invention provides a vision system housing having a front plate assembly that accommodates a plurality of lens mount types. The front plate includes a central aperture that is located at a predetermined axial (camera axis) distance from a plane of an image sensor. The aperture is stepped from a wider diameter adjacent to the front to a narrower diameter more adjacent to the sensor. This arrangement enables threaded mounting of a plurality of lens mount types, for example M12 and C-Mount. The threaded base for the M12 lens is provided in the smaller-diameter, interior portion of the front plate aperture, adjacent to the sensor. The threaded base for the C-Mount lens is provided at the front of the front plate, adjacent to the exterior surface of the front plate and housing.

Abstract: The image-capturing apparatus communicates with an accessory apparatus using a clock/communication request channel and first and second data communication channels. The camera controller switches its communication method between a first communication method in which data communication is performed while a clock signal is alternately switched between first and second levels and a second communication method in which data communication is performed in response to a communication request from the camera controller to the accessory apparatus, which is output by switching a signal level of the clock/communication request channel from the first level to the second level. The camera controller, in response to detecting a communication error in the first and second communication methods, transmits to the accessory apparatus through the second data communication channel a specific signal for restoring the communication while keeping the signal level of the clock/communication request channel at the first level.

Abstract: A disposable lens applied to electronic operation device for recognition includes a substrate, a lens and a fix adhesive. It is only necessary for the user to fix the disposable lens to the electronic operation device provided with an image-capturing unit and enable the image-capturing unit to align with a recognized unit to be recognized through the lens, such that the image of the recognized unit is expanded through the lens through optical properties. Thus, the image signal captured by the image-capturing unit is clearer, and then processed by the electronic operation device. Not only compactness with portability enabling the user to recognize the recognized unit immediately, but also the effect of low-priced material are provided due to simple structure of the disposable lens of the present invention. Thereby, relative advantages in volume, convenience and cost are all obtained.

Abstract: This patent specification describes a barcode-reading enhancement accessory for a mobile device having a barcode-reading capability. The accessory may include an outer case and an inner carriage. A mobile device is encased in the inner carriage, and the combination of the inner carriage and the mobile device may be accommodated in the outer case. The inner carriage is configured to accommodate a mobile device of a particular size such that a mobile device of a different size may be accommodated in the outer case using a different inner carriage. The accessory may also include an optic system to fold an optical path of a field of illumination of a light source of the mobile device and/or a field of view of a camera of the mobile device.

Abstract: An interchangeable lens to be detachably attached to a camera body, that includes a holding unit at which a plurality of contacts is arranged, the interchangeable lens includes: a first communication contact system arranged at the holding unit; and a second communication contact system different from the first communication contact system, arranged at the holding unit at a position different from a position at which the first communication contact system is arranged. The fourth contact is arranged at a position closer to the second communication contact system than the first contact, the second contact, and the third contact are, and the seventh contact and the eighth contact are arranged at positions closer to the first communication contact system than the fifth contact and the sixth contact are.

Abstract: In some embodiments, an auxiliary optical device for a mobile electronic device has a mounting component that is configured to be selectively attachable and detachable from the mobile electronic device. The mounting component is configured to be coupled to and decoupled from a mobile electronic device using an anchor that is inserted into a port of the mobile electronic device. In some embodiments, the auxiliary optical device attaches to the mobile electronic device by clamping or otherwise contracting or squeezing upon a portion of the mobile electronic device. In further embodiments, the auxiliary optical device is configured to be attached to wearable devices, such as eyewear that includes an onboard camera lens.

Abstract: An object is to provide a lens device that can share a cable and can prevent the unnecessary exposure of the cable, and an imaging apparatus that includes the lens device. A lens device according to an embodiment of the invention, which is replaceably mounted on an imaging apparatus main body, includes a lens barrel, a control unit that is provided on the lens barrel so as to protrude, a cable of which one end is connected to the control unit and the other end is connected to the imaging apparatus main body, a plurality of length regulating members that are provided in a longitudinal direction of the cable, and a housing portion in which the cable is housed and which is provided with an opening through which the cable is led out.

Abstract: A projection image display apparatus which performs an operation for attaching and detaching a projection lens by one action with a simple mechanism is provided. The projection image display apparatus includes an optical engine which irradiates a display element with light emitted from a light source to form an image, a projection lens which enlarges and projects the image emitted from the optical engine, a lens shift mechanism for adjusting a position of an image to be projected onto a screen, a lens attachment unit for attaching the projection lens to the lens shift mechanism, and a first plate for attaching the projection lens to the lens attachment unit to achieve a locked state, and the attachment of the projection lens to the lens attachment unit and the achievement of the locked state are performed by only rotation of the first plate in a first direction.

Abstract: A multi-lens system can be configured to be selectively attachable to a mobile electronic device having a user-facing onboard camera lens and an outward-facing onboard camera lens. The multi-lens system can attach to the mobile electronic device in at least a first position and a second position. The first lens component in the first position is configured to be in optical alignment with the user-facing onboard camera lens and simultaneously the second lens component is configured to be in optical alignment with the outward-facing onboard camera lens. The first lens component in the second position is configured to be in optical alignment with the outward-facing onboard camera lens and simultaneously the second lens component is configured to be in optical alignment with the user-facing onboard camera lens. A portable attachment accessory can be configured to be selectively attachable to a lens system that is configured to receive a portion of a mobile electronic device.

Abstract: The invention relates to an optical arrangement comprising an optical module having a first carrier body to which there are attached at least one optical element and a plurality of first mounting elements, and a housing having a second carrier body for at least one further optical element, wherein a plurality of second mounting elements is attached to the carrier body. Also comprised is a movement device for displacing the first carrier body relative to the second carrier body in a movement direction between a removal position from which the optical module can be removed from the housing and a mounting position in which the movement device presses the first mounting elements against the second mounting elements. The invention relates also to an optical module and to a method for correctly positioning an optical module in a housing.

Abstract: An assembly for coupling an external optical component to a portable electronic device is disclosed. The assembly includes a portable electronic device case having two sidewalls extending from a rear wall, a camera opening extending through the rear wall, a rear groove on an outer surface of the rear wall, and a side groove on a sidewall. Also included is an optical component coupling configured to removably couple to the portable electronic device case. The optical component coupling includes a face plate, a side plate, a rear tongue positioned to engage with the rear groove, a side tongue positioned to engage with the side groove, an optical component mount positioned to align with the camera opening. The optical component comprises one of a spectrometer, a magnifying optical component, a light filter, a telescope, a night vision optical component, a spotting scope, and a bore scope.

Abstract: An adapter that optically couples a camera on a mobile device to an eye piece of an optical device. The adapter includes a base plate configured to retain the mobile device without obstructing a display screen on the mobile device. The base plate includes an optical interface configured to attach to the eye piece of the optical device. A mounting structure is configured to secure the optical interface to the eye piece of the optical device. The mounting structure includes a high friction interface that prevents rotation of the adapter relative to the eye piece. An adjustment system with threaded micro-adjust mechanisms is configured to move the base plate relative to the optical interface in at least two degrees of freedom to optically couple the camera on the mobile device with an optical axis of the eye piece. Images captured by the optical device are displayed on a viewing screen of the mobile device.

Abstract: A lens barrel comprises an outer frame and an inner frame. The lens barrel has a first state, a second state, and a third state during operation in which the outer frame and the inner frame rotate relatively. In the first state, a first cam follower is guided by a first cam. In the second state, the first cam follower is guided by the first cam, and a second cam follower is guided by a second cam. In the third state, the second cam follower is guided by the second cam. In the third state, at least part of the first cam follower enters a space formed by a recess portion or a hole portion.

Abstract: A scope cap includes memory storage for recording and recalling bullet drop compensation data and a visual display. A protective lid pivotably attaches to the scope cap by a hinge to protect the scope cap. The protective lid includes a flange to manually pivot the protective lid about the hinge. The scope cap is mounted to a scope of cylindrical shape; the scope cap is circular in shape to slidably attach over the cylindrical shape of the scope. The scope cap presents an opening which surrounds an ocular lens for viewing a selected target. The scope cap defines a top having a first protrusion and a bottom having a second protrusion. The first protrusion includes a set of scroll keys, a power button, and a backlight button. The second protrusion includes an input button and a gun button.

Abstract: An interchangeable lens attachable to a camera body includes an image pickup optical system configured to form an optical image of an object, and a controller configured to start initializing an optical element included in the image pickup optical system so as to move the optical element to a predetermined position when the controller receives a first signal that commands a start of an initialization from the camera body, and configured to start initializing the optical element after the controller receives identification information from the camera body and a period elapses for which the camera body consumes more than a predetermined amount of power when the controller does not receive the first signal from the camera body.

Abstract: An optical module (10) having at least one beam-forming element (14) and having at least two retainer brackets (20) for fastening the optical module (10) to a carrier (30) are provided. In this connection the retainer brackets (20) have a first support element (22a) at a first spacing with respect to the lens (14) and a second support element (22b) at a second spacing different from the first spacing with respect to the beam-forming element (14) in order to selectively fasten the optical module (10) to the carrier (30) at the first spacing or at the second spacing.

Abstract: A device for attaching a first optical microscope component part to a second part includes an annular receptacle attached to the second part and an annual insertion part. The annular insertion part includes outside-conical retaining projections. The receptacle includes a base ring having a retaining collar with an inside cone tapering away from the base ring and in which a lateral opening is formed, through which the insertion part can be inserted in the receptacle such that it is located on a pre-locking position in which the annular openings overlap. The insertion part and the receptacle can be moved by reciprocal rotation from the pre-locking position into a locking position in which the outside-conical retaining projections of the insertion part are seated against the inside cone of the retaining collar and press the insertion part on the base ring, whereby the insertion part is locked to the receptacle.

Abstract: An interchangeable lens to be detachably attached to a camera body, that includes a holding unit at which a plurality of contacts is arranged, the interchangeable lens includes: a first communication contact system arranged at the holding unit; and a second communication contact system different from the first communication contact system, arranged at the holding unit at a position different from a position at which the first communication contact system is arranged. The fourth contact is arranged at a position closer to the second communication contact system than the first contact, the second contact, and the third contact are, and the seventh contact and the eighth contact are arranged at positions closer to the first communication contact system than the fifth contact and the sixth contact are.

Abstract: A lens assembling device is configured to assemble lenses into a lens barrel. The lens assembling device includes a hollow external barrel, a hollow internal barrel, and a pushing element. The external barrel includes a first hollow chamber and a second hollow chamber coaxial with the first hollow chamber. The first hollow chamber is configured to partly receive the lens barrel. The internal barrel is connected to the push element and is received in the second hollow chamber, and is configured to receive a lens. The pushing element is configured to push the lens from the internal barrel into the lens barrel.

Abstract: A lens barrel includes a lens mount, a fixed frame, and a movable frame. The lens mount includes an attachment part to which the fixed frame is attached, and a recessed part which is adjacent to the attachment part and is recessed toward the camera body, and into which an end part of the movable frame enters at least when the movable frame is positioned closest to the lens mount. Part of the attachment part close to the camera body has a tapered surface inclined relative to the optical axis. A counterbore in which a screw for attaching the fixed frame to the attachment part is disposed is formed at the tapered surface. Due to the tapered surface, part of the lens mount where the attachment part is formed has a thickness greater than that of another part of the lens mount where the recessed part is formed.

Abstract: A lens adapter is provided, comprising a cylindrical base, one end of the base is provided with a first mounting seat for connecting with a lens and a manual aperture controlling ring sheathed on the base, the other end of the base is provided with a second mounting seat for connecting with a camera. The lens adapter also comprises an adjusting mechanism connected to a lens aperture controlling rod and the manual aperture controlling ring. The manual aperture controlling ring is adjusted by the adjusting mechanism to make the rotation angle of the manual aperture controlling ring linearly proportional to the size variation of the lens aperture. The lens adapter allows the rotation angle of the manual aperture controlling ring linearly proportional to the size variation of the lens aperture in a manner of synchronously changing, thus facilitating the user to control the lens aperture.

Abstract: A lens cap unit includes a mounting part mounted on a fixed cylinder in which a movable lens cylinder is movably contained, at least one barrier provided on the mounting part to be movable between a closed position covering a leading end portion of the movable lens cylinder and an opened position opening the leading end portion of the movable lens cylinder, and a cam protrusion provided on the barrier. The cam protrusion engages with the movable lens cylinder at a position outside an effective diameter of the movable lens cylinder.

Abstract: A lens connection module is disclosed, which can be magnetically installed on an image capture device having a light entry opening and a first magnetic unit, and comprises a lens connection body and a second magnetic unit installed on the lens connection body for magnetically connecting to the first magnetic unit. The lens connection body includes a light collecting pathway corresponding to the light entry opening and extending along a light axis, the first magnetic unit has at least one ferromagnetic component arranged on the front face in a radially asymmetric manner, and the second magnetic unit has a magnetic component corresponding to the ferromagnetic component and installed on a joint face. As such, the lens connection module allows quick installation onto and detachment from the image capture device, thereby increasing application flexibility and operation convenience of the image capture device.

Abstract: A lens adapter is provided, comprising a cylindrical base, one end of the base is provided with a first mounting seat for connecting with a lens and a manual aperture controlling ring sheathed on the base, the other end of the base is provided with a second mounting seat for connecting with a camera. The lens adapter also comprises an adjusting mechanism connected to a lens aperture controlling rod and the manual aperture controlling ring. The manual aperture controlling ring is adjusted by the adjusting mechanism to make the rotation angle of the manual aperture controlling ring linearly proportional to the size variation of the lens aperture. The lens adapter allows the rotation angle of the manual aperture controlling ring linearly proportional to the size variation of the lens aperture in a manner of synchronously changing, thus facilitating the user to control the lens aperture.

Abstract: The present invention is to provide a pivotally connected structure, which includes a positioning frame having one end threadedly connectable with a front side of a camera lens; a pivotally connecting frame having one end pivotally connectable with the other end of the positioning frame, and provided therein with a receiving space which is configured for receiving a lens (e.g., protective lens, ND filter, or polarizer); and an engaging frame having one end provided with a pressing ring and having an outer periphery formed with a second curved surface which is pivotally connectable with a first curved surface provided within the other end of the pivotally connecting frame; such that the pressing ring presses against the periphery of the lens and thereby positions the lens in the receiving space, and the angle of the lens with respect to the camera lens can be adjusted by rotating the pivotally connecting frame.

Abstract: A lens component configured to be removably attachable to a protective case or mounting component. The protective case or mounting component configured to be removably attachable to a communication or mobile electronic device. The protective case or mounting component includes one or more locking members movable between a first open position and a second closed position. The one or more locking members configured to engage with one or more engagement members of the lens component. The engagement of the one or more locking member with the one or more engagement members securing the lens component in place.

Abstract: Some embodiments disclosed herein relate to a lens component having one or more lenses attached to a retainer portion configured to removably attach to communication devices such as mobile phones, tablet computers, media players, and the like. The retainer portion may be configured so as not to interfere with a user's view of a display panel of the communication device. In some embodiments, a plurality of lenses may be provided, and the lenses may be removably attached to the retainer portion and may be interchangeable. A structure for providing a flash may also be provided. In some embodiments, additional features may be provided, such as attachment components to facilitate attachment to stability devices, such as tripods, and to user-wearable accessories.