Abstract: The present disclosure provides glasses including: a glasses rim; a glasses temple comprising a control circuit or a battery; a rotating shaft configured to connect the glasses rim and the glasses temple, so that the glasses rim and the glasses temple are able to relatively rotate around the rotating shaft, the rotating shaft being disposed with a rotating shaft wiring channel along an axial direction; a connection wire passing through the rotating shaft wiring channel and extending to the glasses rim and the glasses temple, respectively; a speaker comprising an earphone core and being connected to the glasses temple, the control circuit or the battery driving the earphone core to vibrate to generate a sound through the connection wire; and at least two microphones disposed in the glasses temple or the speaker, the at least two microphones being located at positions with different distances from a mouth of a user.

Abstract: Smartglasses comprising a removable and replaceable front frame comprising hinges or hinge elements and temples releasably connected to the hinges or hinge elements. The front frame contains no electrical wiring that connects the temples and is configured to be removed and replaced without affecting electronic connection with the temples or any devices or systems paired or connected with the temples.

Abstract: The invention relates to an eyeglass joint for an eyeglass frame with a first joint part assigned to a rim of the eyeglass frame, and a second joint part assigned to an eyeglass temple of the eyeglass frame, wherein the joint parts are movably connected to each other by means of at least one spring element attached to both joint parts, wherein the spring element preferably has a closed annular shape and/or is rubber-elastic. Furthermore, the invention relates to a joint set, an eyeglass frame, an eyeglass frame set, and the use of a spring element.

Abstract: A bone conductive sound generating device is provided and includes a sound generating mechanism and a fixing mechanism. The fixing mechanism is configured to act on the sound generating mechanism, such that the sound generating mechanism adheres to and fit with a back of an auricle of a user at least when the sound generating mechanism is in use. Accordingly, the present application may improve the sound quality of the bone conductive sound generating device, improving listening experience for the user.

Abstract: Provided is a rotating shaft mechanism of an electronic device. A first fixing assembly and a second fixing assembly in the rotating shaft mechanism are connected to each other by a first connector and a second connector. A hollow region can be reserved in the rotating shaft mechanism as the first connector and the second connector may be shorter. Thus, an external circuit of the electronic device can pass through the hollow region and be disposed in a second body of the electronic device. An electronic device are also provided.

Abstract: A bone conductive sound generating device is provided and includes a sound generating mechanism and a fixing mechanism. The fixing mechanism is configured to act on the sound generating mechanism, such that the sound generating mechanism adheres to and fit with a back of an auricle of a user at least when the sound generating mechanism is in use. Accordingly, the present application may improve the sound quality of the bone conductive sound generating device, improving listening experience for the user.

Abstract: An assembly for eyeglasses temple includes a first connecting rod and a second connecting rod each having an elastic component, outer ends of the two elastic components are hooked to each other to cause the second connecting rod and the first connecting rod abut against each other. A protrusion is provided on an end portion of the second connecting rod, when the second connecting rod is rotated to a position perpendicular to the first connecting rod, the protrusion is inserted in and limited by an outer peripheral side surface of an end portion of the first connecting rod.

Abstract: A screwless hinge system for connecting a temple to a front frame portion of eyewear includes a hooked tab with a single hook and a base. The hooked tab extends through the front frame portion and a u-spring until the base engages the frame. A temple receiver of a temple compresses the u-spring and engages the single hook, allowing for opening and closing of the temple and removal and replacement of the temple without tools.

Abstract: A hinge (4) between a frame (2) and a temple (3) of spectacles, rendering it possible for the temples (3) of the spectacles to be in a use and a store position, respectively. At least one electrical or optical cable (14) or wire is running between the frame and the temple, wherein the at least one cable or wire (14) will aim to follow a thought neutral bending plane through the hinge (4). The at least one cable or wire (14) is not stretched in the store position of the temples (3) nor crinkled in the use position. The hinge (4) has two axis connections, a first axis connection (5a) positioned at the frame (2) and a second axis connection (5b) positioned at the temple (3), and therebetween a connector (6) or at least one central part (7).

Abstract: A head-mounted display device includes a front piece and an annular piece. The front piece is adapted for placing a display device. The annular piece includes a pair of compression portions and a pair of rotating portions. The pair of rotating portions are respectively located at two opposite ends of each of the pair of compression portions. The annular piece is connected to the front piece via the pair of compression portions. When the pair of compression portions are compressed toward the front piece, the pair of rotating portions are adapted to be rotated relative to the pair of compression portions by the pair of compression portions being compressed, and rotation directions of the pair of rotating portions are opposite to each other.

Abstract: Folding reading glasses of the type in which the temples fold around the lenses, in which the temples are supported and removably attached to the lenses while folded, providing greater integral strength to the entire assembly and resisting breakage. Several methods for attachment of the temples to the lenses are disclosed, including an interference fitting member in the temple that grasps the lens frame in the vicinity of the lens, and multiple embodiments of an interference fitting member in the temple that grasps a mating member on the outer edge of the lens frame. Combinations of these embodiments are also possible.

Abstract: A strap assembly may include a lateral strap member configured to extend along a first side and a back of a user's head, the lateral strap member including (1) a proximal portion configured to be coupled to a head-mounted-display device, (2) a distal end disposed away from the proximal portion, and (3) an arcuate biasing section that arcs from the proximal portion to the distal end, the arcuate biasing section including a resilient material. The arcuate biasing section may peripherally surround at least a portion of a reduced region when the arcuate biasing section is in a relaxed state. Additionally, the arcuate biasing section may be tensioned and deflected outward by the user's head when the lateral strap member is worn with the head-mounted-display device by the user. Various other apparatuses, systems, and methods are also disclosed.

Abstract: Apparatuses, systems for electronic wearable devices such as smart glasses are described. The wearable device can comprise a frame, an elongate temple and an articulated joint. The frame can define one or more optical element holders configured to hold respective optical elements for viewing by a user in a viewing direction. The temple can be moveably connected to the frame for holding the frame in position when the device is worn by the user. The articulated joint can connect the temple and the frame to permit movement of the temple relative to the frame between a wearable position in which the temple is generally aligned with the viewing direction, and a collapsed position in which the temple extends generally transversely to the viewing direction. The articulated joint can include a base foot fixed to the frame and oriented transversely to the viewing direction.

Abstract: A frame for spectacles includes a frontal framework with lateral lugs for articulation of arms and means of articulation between each lug and the corresponding arm. The articulation means include a flexible member, structurally independent of the lug and the arm, the flexible member being held on the arm and coupled rotatably, the end of each arm, facing the corresponding lug, shaped in such a manner that the arm, in its movement about the hinge pin, is flexibly constrained towards preselected angular positions relative to the frontal framework. The frame also includes a respective distance element interposed between each arm and the corresponding flexible member, and said distance element is mounted on the arm in an adjustable manner in order to impose, at the level of said distance member, a preselected distance between the arm and the flexible member, and to regulate a flexible pre-load exerted on the flexible member.

Abstract: A pair of spectacles including a lens arrangement having two lateral temple arm bearing arrangements. Each temple arm bearing arrangement has a first hinge lug having a first bearing opening and a second hinge lug having a second bearing opening, and at least one locking member insertion opening configured in the first or second hinge lug. The spectacles additionally comprise two temple arms, which respectively have a temple arm main body, and a bearing pin integrally connected thereto, which bearing pin, in the assembled state, is pivotably connected to the first and second bearing opening of the respective temple arm bearing arrangement. Each temple arm further has at least one locking member, which, in the assembled state, is arranged between the hinge lugs of the respective temple arm bearing arrangement and, in a pivot position, lockingly holds together this temple arm and the lens arrangement.

Abstract: Elastic hinge for eyeglass frames, which comprises an articulation screw engaged in the holes of two articulation elements. The articulation screw comprises a shank provided with a narrow portion, which is engaged in the hole of a first tab of an articulation element, and with an enlarged annular portion, which forms a step and is engaged in the hole of a head portion of the other articulation element. The articulation screw assumes an end stop position, in which it is tightened and aligned with the hinging axis, and a blocking position, in which it is loosened and is tilted with respect to the hinging axis in response to the elastic force exerted by an elastic device, such that the step of the articulation screw interferes with the edge of the hole of the first tab of the articulation element, preventing a further unscrewing of the articulation screw.

Abstract: A removable lens for glasses includes an electrochromic layer adapted to transition between at least two states of a transparency level dependent on an electrical condition applied to the electrochromatic layer and an electrical connection element physically adapted to make an electrical connection with the electrochromic layer, wherein the electrical connection element is positioned to align with a variable-power electrode mounted on the glasses such that, when the removable lens is mounted on the glasses, the variable-power electrode and the electrical connection element make the electrical connection between the variable-power electrode and an electrically conductive layer of the electrochromic layer.

Abstract: Detachable spectacle frame formed by a front, which in turn includes some rims, a bridge, some lugs and some nose pads; a pair of temples; in which each of the temples includes a hinge to engage the front, and a terminal end, where each of the rims and their corresponding temples has a defined slot. The removable frame being characterized in that each of the lugs further includes a laminar projection, finished by a hook; the hinge of each of the temples incorporates a recess and a kink and; further incorporates a fastening clip engaging the lug.

Abstract: A hinge assembly comprising a guide body, a first connection element, a second connection element, a first spring and a second spring; the guide body comprising a first end surface and a second end surface provided at opposite sides respectively, wherein the first end surface is provided with a first guide slot, the second end surface is provided with a second guide slot, and the first guide slot and the second guide slot intersect orthogonally, the first connection element is provided with first connection end extending beyond an end surface of the endpiece, the second connection element is provided with a second connection end extending beyond an end surface of the temple end, the first connection end and the second connection end are hingedly connected and pivoted with each other within the guide body; A glasses frame comprising an endpiece, a temple, and a hinge assembly.

Abstract: Apparatuses, systems for electronic wearable devices such as smart glasses are described. The wearable device can comprise a frame, an elongate temple and an articulated joint. The frame can define one or more optical element holders configured to hold respective optical elements for viewing by a user in a viewing direction. The temple can be moveably connected to the frame for holding the frame in position when the device is worn by the user. The articulated joint can connect the temple and the frame to permit movement of the temple relative to the frame between a wearable position in which the temple is generally aligned with the viewing direction, and a collapsed position in which the temple extends generally transversely to the viewing direction. The articulated joint can include a base foot fixed to the frame and oriented transversely to the viewing direction.

Abstract: An articulated assembly includes a first piece connected to a second piece by a screwless hinge having a body with a cylindrical axial recess of revolution which opens onto at least one of the axial faces of the body and a cylindrical hub of revolution, with a diameter corresponding to that of the axial recess, fully housed in the axial recess; this hub including a radial cavity opening onto its periphery, and the lateral wall of the body having an opening of predetermined angular extent. The first piece includes an end provided with fixing elements arranged to be fixedly attached to the hinge body, the second piece includes an end provided with coupling elements suitable for being introduced into the radial cavity through the body opening and with retaining elements cooperating, in the in-use position introduced into the axial cavity of the hub, with the cylindrical wall of revolution.

Abstract: A hinge for a spectacles frame, comprising a front-face element, a side element and a connecting element connecting said front-face element to said side element, said connecting element comprising a base member, mounted in the side element, and a head member, housed in the front-face element, the base member being articulated directly to said head member about a vertical first axis of articulation, the head member of the connecting element being articulated directly to the front-face element about a horizontal second axis of articulation.

Abstract: The present invention relates to a glasses leg spring hinge structure, comprising a glasses leg, plurality of metal rings, a rotating shaft, a leaf spring and a mounting head, wherein the metal rings are fixedly connected to a head of the glasses leg, wherein the rotating shaft is arranged in the metal rings, wherein the leaf spring is arranged at the head of the glasses leg, wherein the leaf spring is located below the rotating shaft, wherein a rotating shaft groove is formed in a side surface of the rotating shaft, wherein the mounting head is T-shaped and wherein a head of the mounting head is inserted into the rotating shaft groove.

Abstract: The frame includes a front surface (10) that is extended by two side tenons (12) and two arms (30) that are hinged onto the tenons (12) about the hinge axes (X-X?) of two hinges (50). The hinges (50) each include a front surface element (51) that rigidly connected to a tenon (12) and an arm element (52) that is rigidly connected to an arm (30). Each arm (30) is set up such as to pass, through rotation about said hinge axis (X-X?), from an open position for which said arm extends the tenon (12) to a closed position for which said arm is clamped into the front surface (10). In at least one of the hinges (50), the hinge axis (X-X?) is substantially perpendicular to the tenon (12) and to the arm (30). The front surface element (51) and the arm element (52) are set up such as to provide, between said tenon (12) and said arm (30), a space (60) for freely passing from the open position to the closed position.

Abstract: The invention relates to a pair of spectacles, in particular sports spectacles, comprising a spectacle frame, at least one spectacle lens which is detachably locked by the spectacle frame and a locking means for securing the spectacle lens to the spectacle frame. The locking means is displaceable relative of the spectacle frame between a spectacle lens locking position and a spectacle lens unlocking position, wherein the locking means interacts with the spectacle lens in the spectacle lens locking position for the spectacle lens to be secured to the spectacle frame. In the spectacle lens unlocking position, the locking means unlocks the spectacle lens in such a way that the spectacle lens is removable from the spectacle frame. The gist of the invention is a locking counter-means interacting with the locking means, the locking counter means being arranged on the spectacle frame.

Abstract: A hockey skill training system, said system comprising a hockey stick having a transverse bore, a movable stand, and a skill training device, said skill training device comprising: a generally cylindrical external shape having a to surface, a bottom surface, a front, and a back, wherein the bottom surface comprises an open portion adapted for releasably rigidly connecting said bottom portion of said training device on top of the stand, and wherein the top surface is upwardly slanted from the front to the back.

Abstract: A glasses apparatus and a controlling method thereof, and a display apparatus are provided. The glasses apparatus is configured to operate with the display apparatus, and includes a communicator configured to perform communication with the display apparatus; an osteophony speaker configured to output audio received from the display apparatus; and a controller configured to control the communicator to receive contents audio from the display apparatus if the display apparatus provides a contents image, and to receive call audio from the display apparatus if the display apparatus performs a call function with an external user, and to output one of the received contents audio and call audio to the osteophony speaker.

Abstract: A head restraint includes a base element on which two wing elements are mounted by at least one hinge so as to rotate about a vertical axis. The hinge has a pin and a recess which are frustoconical. The support structure of each wing element is in two parts.

Abstract: An eye-lens device includes a frame, at least a lens unit, two first magnets, and two fasteners. The frame includes at least a lens-holding portion and two magnet-seats. The lens unit is held by the lens-holding portion. The first magnets are disposed at the magnet-seats respectively. Each of the fasteners is disposed pivotally to the frame and includes a second magnet. The lens unit is fastened by the attraction of the first and second magnets when the fasteners rotate relative to the frame.

Abstract: A virtual image display system includes a display device outputting image light, a circuit substrate driving the display device based on an image signal, a signal line connected to the circuit substrate and inputting the external image signal to the circuit substrate, a projection optical device projecting the image light from the display device, a light guide plate taking in the projected image light, and then, guiding the light to an external predetermined position, a housing member having a housing space housing respective members, and a first space communicated with the housing space and housing a part of the signal line inside, and a temple rotatably attached to the housing member via a hinge mechanism and having a second space communicated with the first space via the hinge mechanism inside. The signal line is routed from the first space into the second space via the hinge mechanism.

Abstract: The present disclosure provides a joint structure for eyeglass frames and temples. An eyeglass frame and two temples are connected by the joint structure, which has two bases and a bidirectional screw rod. Since the assembly of the bases and the bidirectional screw rod is simple and quick, labor and cost of assembly is saved and the joint structure is an innovative eyeglass structure.

Abstract: A pair of eyeglasses includes a frame having two rims with a bridge connected therebetween. Each rim has an installation hole and a groove is defined in the inner periphery of each of the installation holes. A reception portion is defined in the outside of each of the rims. Two lenses each have the inner end engaged with the groove and the outer end of each lens is located in the reception portion. A passage is defined through the distal end of each of the rims. An opening and an engaging hole are respectively defined through each of the rims and communicate the passage. The opening communicates with the reception portion. Two connection members are respectively inserted into the two passages and each connection member has a protrusion which extends through the opening and presses the lens. Each connection member has a resilient engaging portion engaged with the engaging hole.

Abstract: The telescopic hinge (7) comprises a front face element (10) intended to be joined with a side stud extending along the front face of the frame and having a first means of fastening (12, 40), and a branch element (20), intended to be joined with the corresponding branch of said frame and having a second means of fastening (25) capable of cooperating with the first means of fastening (12, 40) in order to hold the front face element (10) against the branch element (20). The telescopic hinge (7) further comprises an intermediate means of fastening (30) capable of cooperating respectively with said first (12, 40) and said second (25) means of fastening.

Abstract: In an embodiment, a hinge for a fluid-filled. lens assembly includes a base having a first end configured to connect to a temple arm of the lens assembly and a second end configured to connect to a frame of the lens assembly, wherein the base includes a gap that is shaped to allow for tubing to pass from the first end to the second end of the base. In an embodiment, the first end of the base includes a cammed surface configured to engage a surface of the temple arm. In an embodiment, the first and second ends of the base are configured to flex around a rotation axis of the hinge.

Abstract: An eyeglasses assembly structure is provided, in which assembly slots for joint members are mainly formed on both sides of the eyeglasses frame, and the joint members are pivotally connected therein. Locating members are respectively interposed between upper and lower elastic elements for holding the pivotal connection status of the joint members and the assembly slots. When the joint members are to be detached from the assembly slots, the locating members are pushed into sliding grooves of the joint members, and the upper and the lower elastic elements are pressed to be deflected inward so as to allow the upper and the lower pivots detached from the pivotal connection with the assembly slots. Therefore, temples or strap can be assembled on the rear ends of the joint members and then the eyeglasses patterns can be conveniently transformed according to users' needs.

Abstract: The spectacle frame includes a frame front extended by two lateral tenons and two sides articulated to the tenons about articulation pins of two telescopic hinges, each with a frame front element fastened to a tenon and a side element fastened to a side, the side element of a hinge including a slide articulated to the frame front element and slidably mounted in a sheath against and subject to the action of a spring. The slide extends as far as the free end of the side, of tubular shape and providing said sheath, a sleeve, fixed to the end of the slide, being slidably mounted in the end of the side in which said spring also extends to cooperate with the sleeve.

Abstract: A resilient hinge device for connecting each of the arms to a front frame of spectacles in an articulated way, includes a tie bar having an axial extremity articulated with the arm and a resilient member including a substantially U-shaped sheet metal body, the resilient member being fitted onto the tie bar in such a way as to remain placed between the front frame and the arm to resiliently stress the arm towards preselected angular positions with respect to the front frame when the arm is rotated, these angular positions including a position in which the arm is open, suitable for wearing of the spectacles, and a closed position of the arm folded back against the front frame, and to return the arm to the open position when rotated beyond that position when opened too far with respect to the frame.

Abstract: Eyeglasses include a front with a pair of lenses and a first arm and a second arm, which are articulated to sides of the front via respective hinges and are able to turn between an extended position and a folded position where they are set the first behind and the second in front of the front. A hinge for articulation of the second arm is connected to the front in such a way that it can turn through 180° about an axis orthogonal to an axis of the hinge. The arms may moreover incorporate a front lighting system and/or a voice-recognition sensor.

Abstract: An eyeglass frame includes a front portion, a hinge provided on each of both ends of the front portion, and a temple connected to the front portion via the hinge. The hinge has a hinge piece, the temple has a metal connection part integrally formed with the hinge piece, and the connection part has a partially reduced section to form an elastic portion.

Abstract: A hinge assembly for an eyeglass frame is provided. The hinge assembly can be configured to provide support to the earstems of the eyewear frame when the earstems are rotated between a folded and unfolded position. In some embodiments, the hinge assembly can provide a screwless appearance and improved engagement and articulation of the earstem relative to the frame of the eyeglass.

Abstract: An eyewear utilizing a screw-less hinge to connect the temple to the frame. The frames terminate laterally at an open, curved rung configured to receive a cylinder. This cylinder is fixed to the temple. Due to the configuration of the curved rung, the cylinder can be inserted into the curved rung in a rotatable or pivotable fashion. The cylinder receiving the curved rung holds the frame together and keeps eye wires from opening, thus keeping lenses from falling out of the eyewear. A wedge tool can be used to displace the curved rung from the cylinder to easily remove the temple from the frame.

Abstract: The invention relates to an eyeglass hinge, composed of two hinge parts and at least one clamp connection. Further, the invention relates to an eyeglass frame, composed of two eyeglass hinges according to the invention, two eyeglass earpieces and one lens mounting rim. The eyeglass hinge (1) according to the invention comprises two hinge parts (2, 2a) and at least one clamp connection (3), whereby the at least one clamp connection (3) holds hinge parts (2, 2a) together in an articulated manner. When force is increased, the construction of the eyeglass hinge according to the invention makes possible a problem-free exceeding of frame opening angle ? from a value of ?open which amounts to approximately 180° up to a value of ?max of approximately 186° (over-bending) and going below frame opening angle ? from a value of ?closed, which amounts to approximately 90°, down to a value of ?min of approximately 85° (under-bending).

Abstract: An eyeglass frame having flexible pivot hinge enabling approximately 180° bending. The frame includes a frame, a temple and a hinge. The frame has a tenon receiving hole and a frame screw hole perpendicular thereto. The temple has a stem receiving hole and a temple screw hole perpendicular thereto. The hinge has a frame joint and a temple joint. The frame joint has a pin seat formed with a bore and a tenon formed with a tenon screw hole. The temple joint has a stem formed with a stem screw hole and ending with substantially U-shaped fork. A channel passes through the two branches of the fork. The instant disclosure includes relatively minimum members for easier maintenance and increased comfortableness.

Abstract: A first device is provided that comprises a frame. The frame further comprises a lens housing adapted to support a first lens and a second lens, a first temple movable coupled to the lens housing, and a second temple movably coupled to the lens housing. The first device further comprises a first spring mechanism coupled to the first temple and the lens housing. A first conductive path is provided from the first temple to the lens housing for at least one position of the first temple relative to the frame.

Abstract: A glasses-type shutter holder may include left and right temple parts connected respectively to left and right frame end parts of frame. The left and right temple parts may be foldable respectively with respect to the left and right frame end parts in accordance with movement, for each frame end part and temple part pair, of a contact position at which a movement part provided with one of the temple part and the frame end part of the pair is in contact with a contact part of the other of the temple part and the frame end part of the pair. For each of the pairs, the contact part is in contact with the movement part when the temple part is unfolded to a maximum degree, and a maximum degree of opening of the temple part is varied in accordance with the movement of the movable part.

Abstract: An eyewear utilizing a screw-less hinge to connect the temple to the frame. The frames terminate laterally at an open, curved rung configured to receive a cylinder. This cylinder is fixed to the temple. Due to the configuration of the curved rung, the cylinder can be inserted into the curved rung in a rotatable or pivotable fashion. The cylinder receiving the curved rung holds the frame together and keeps eye wires from opening, thus keeping lenses from falling out of the eyewear. A wedge tool can be used to displace the curved rung from the cylinder to easily remove the temple from the frame.

Abstract: An elastic constraint system for a pair of eyeglasses includes at least one inextensible flexible wire provided with two wire terminals to be engaged with two distinct portions of an eyeglasses front frame or temple bars, at least one of the wire terminals being provided with an elastic element mounted preloaded and acting in opposition to a tensioning of the inextensible flexible wire.

Abstract: A pair of eyeglasses includes a frame having two rims with a bridge connected therebetween. Each rim has an installation hole and a groove is defined in the inner periphery of each of the installation holes. A reception portion is defined in the outside of each of the rims. Two lenses each have the inner end engaged with the groove and the outer end of each lens is located in the reception portion. A passage is defined through the distal end of each of the rims. An opening and an engaging hole are respectively defined through each of the rims and communicate the passage. The opening communicates with the reception portion. Two connection members are respectively inserted into the two passages and each connection member has a protrusion which extends through the opening and presses the lens. Each connection member has a resilient engaging portion engaged with the engaging hole.

Abstract: A virtual image display includes at least an image forming device, a pair of accommodating members at least one of which accommodates the image forming device, a light guide member which guides image light received from the image forming device toward a predetermined outside position, and a pair of temples one and the other of which are rotatably attached to one and the other of the pair of the accommodating members, respectively. Each of either the accommodating members or the temples has a contact member which regulates rotation of the temple, and a position control member which shifts the corresponding contact member in a first direction extending nearer to or away from the corresponding accommodating member or temple on which the contact member is not provided.

Abstract: Eyeglass assemblies including an eyeglass lens having an engaging portion. Under typical conditions of use, the engaging portion is maintained in contact with an eyeglass frame member by means of a removable bonding member (RBM). Under selected atypical ambient conditions, the RBM changes so that the engaging portion and the frame member can be separated. The engaging portion can extend from the lens, or can be a recess in the lens. The RBM can be a suitable adhesive (RBA), or a component composed of a shape memory metal (RBSMA) or a material which softens when subjected to heat or other atypical condition. The engaging portion can be shaped and treated to reduce stresses therein. Similarly, the open ends of an eyeglass rim can be maintained in contact with each other under typical conditions of use by an RBA or an RBSMA so that the rim is positioned around an eyeglass lens, but can be released under selected atypical ambient conditions.