HK1165015B - Eyeglass with enhanced ballistic resistance - Google Patents

Description

Eyewear with enhanced impact resistance

Background

Technical Field

The present invention relates generally to mounting systems for eyeglasses, and more particularly to methods and apparatus for mounting optical lenses in a manner that provides superior impact resistance and lens stability.

Description of the related Art

In recent years, various improvements have been made in the field of spectacles, in particular with respect to spectacles intended for strenuous exercise or as fashion sunglasses. These eyewear designs achieve a variety of functional advantages over the past strenuous exercise eyewear, such as maximizing interception of ambient light, reducing optical distortion, and increasing wearing comfort.

In addition, various other improvements have been made in order to enhance the durability and strength of the eyeglasses. For example, various durable eyeglass designs have been developed that allow the eyeglasses to remain secure even in the event of an accident, impact, stress, or other form of use or misuse. Additionally, lenses with enhanced impact protection have also been developed. Thus, eyeglasses are generally resistant to breaking, bending, or becoming unusable.

Disclosure of Invention

A continuing objective in the field of high quality eyewear, specifically intended for high speed strenuous sports or military applications, is to provide eyewear exhibiting excellent impact resistance and lens stability. Various improvements have been made to enable wearers to quickly modify their eyeglasses using replaceable components and/or lenses, such as by using the systems disclosed in U.S. patent nos. 4,730,915, 5,387,949, and 7,347,545, the disclosures of each of which are incorporated herein by reference in their entirety. However, the recognition that additional support may be provided to the replaceable or removable lens in order to enhance the impact resistance and lens stability of the eyeglass is reflected by at least one embodiment disclosed herein.

Embodiments disclosed herein provide, at least in part, a durable eyeglass design that enables lenses on the eyeglass to be more securely retained by the frame of the eyeglass. The eyewear can include one or more retention features that can be used in communication with a conventional lens mounting feature, such as the conventional lens mounting features in the systems disclosed in the above-mentioned patent references. However, in some embodiments, the retention member can be used independently of a conventional lens mounting member.

In certain embodiments, the retention feature may advantageously limit translation and/or rotation of the lens in all directions in which the retention feature engages and/or supports the lens in response to an impact event, such as a collision from a projectile and/or harsh contact with an object. This feature can be contrasted with prior art lens mounting assemblies, which are typically limited to translation and/or rotation in most, but not all, directions at a given location along the lens-frame boundary. Thus, a collision from a shock event may cause the prior art lens to move or disengage from the prior art spectacle frame.

For example, a conventional removable single lens system includes an upper frame having a downwardly facing frame notch. The upper edge of the lens is located within the lens notch. The lens is retained within the groove by a first interference fit at a first side edge of the lens and a second interference fit at a second side edge of the lens. This can provide a secure mounting of the lens and good resistance to side-to-side movement of the lens relative to the frame during light use of the eyeglass. However, during deformation of the elastic structure of the eyeglasses following impact, at least the central portion of the lens may advance downward and away from the lens notch. Accordingly, it is recognized by at least one of the embodiments disclosed herein that prior art eyewear does not provide sufficient impact resistance.

In contrast, embodiments disclosed herein can securely hold a lens relative to a frame during or after an impact collision. For example, the middle portion of the lens may be located completely within the lens notch during or after the impact.

An advantage of the above embodiments is that they allow the frame to securely hold the lens without destroying or destroying the optical characteristics of the lens. For example, the lens can be secured to and/or supported by the frame in a manner that preserves the as-molded geometry of the lens.

Further, embodiments disclosed herein may advantageously provide eyewear in which lenses may be easily removed and replaced by a wearer, while enabling the wearer to install the lenses such that the lenses exhibit excellent impact resistance and lens stability.

For example, in certain embodiments disclosed herein, eyewear is provided that includes a frame capable of mounting at least one lens. The eyewear may include at least one retention feature or lens lock. The retention component or lens can be mounted on or carried or supported by the frame and/or lens. The retention component can be configured to engage at least a portion of the frame and/or the lens. The retention component can be configured to secure the lens relative to the frame to prevent the lens from separating from the frame due to a shock event. For example, the lens can be "detached" from the frame when any portion of the upper edge of the lens is pulled out of the lens notch.

In some embodiments, eyewear can include at least one lens, a frame, and at least one rotatable retention component. The frame may be configured to be worn on the head of a wearer. The at least one retention component can be supported by the frame and/or the lens. The retention component can rotate relative to the frame and relative to the lens to engage the engagement portion of the lens to prevent the lens from separating from the frame due to a shock event.

Optionally, the at least one lens may include at least one lateral first connector. The frame can include at least one lateral second connector, a first ear stem, and a second ear stem, the at least one lateral second connector of the frame can be configured to engage with the at least one lateral first connector of the at least one lens to support the at least one lens in a field of view of a wearer.

The retention member or lens lock may include at least one engagement structure to facilitate engagement with the lens. Further, the retention component or lens lock can be a system or components that operate to engage the lens. The eyewear may include at least one retention feature or lens lock. Further, the at least one retention component can be disposed in a middle portion of the frame.

In some embodiments, the retention member or lens lock may include at least one clip. The clip can be attached along the frame. The clip can be disposed in a middle and/or side portion of the frame, such as centered on a midline of the frame. The clip can be actuated by the wearer to secure a middle or side portion of the lens to the frame.

As described above, the eyewear can optionally be configured such that the at least one lens includes at least one first connector and such that the frame includes at least one second connector. The at least one lens may be a single lens or a dual lens. The first connector of the lens can engage the second connector of the frame to limit movement of the lens relative to the frame. For example, the first connector of the lens can comprise opposing side connectors and the second connector of the frame can comprise opposing side connectors. The connector of the frame can include opposing lateral terminal recesses and/or protrusions. The connector of the lens may comprise corresponding opposing side projections and/or stops or recesses. For example, the terminal recesses and/or protrusions of the frame can be configured to at least partially receive or engage the protrusions and/or recesses of the lens. When mounted together, the terminal recesses and/or protrusions of the frame and the protrusions and/or recesses of the lens can limit movement of the lens relative to the frame.

In some embodiments, the at least one first connector of the lens and the at least one second connector of the frame can be used with a retention component, a lens lock, or a clip. For example, a connector of the frame can be interconnected with a corresponding connector of the lens to mount the lens to the frame in a mounted position while securing a middle portion of the lens to the frame with a clip to prevent the lens from separating from the frame due to a shock event. Thus, if the eyeglasses are subjected to undesirable forces, such as may be caused by dropping, bumping, or being struck by a projectile, the lenses will not separate from the frame. However, multiple clips can also be used to secure the lens relative to the frame at points along multiple portions of the lens.

In some embodiments, the clip can rotate relative to and/or about the frame and/or the lens. In some embodiments, the clip can translate or slide relative to the frame and/or the lens. For example, the retention component may include a rotational or translational clip that may be mounted on or supported by the frame of the eyeglasses. In some embodiments, the retention component may comprise a rotating or translating clip that may be mounted on or carried or supported by the lens. The clip may be manually adjusted or actuated by the wearer. The clip can engage a portion of the frame and/or lens directly or indirectly. In some embodiments, one or more clips can engage a portion of a lens (such as a dual lens system) directly or indirectly.

In some embodiments, the clip can include an engagement structure, such as a tab, that operates to engage and/or interlock with an engagement portion or corresponding surface structure (such as a recess or aperture) on the frame and/or lens.

For example, the lens may include a hole or groove that may be engaged and/or supported by the tab of the clip. In some embodiments, the clip can have a first rotational/translational position or a disengaged position in which the lens can be freely removed downward from the frame, enabling disengagement of the lens. The clip can also have a second rotational/translational position or engagement position in which the lens can be secured and/or supported relative to the frame such that the lens is not separated from the frame by a shock event.

The clip may have a hingeless configuration. For example, the clip can be configured as a tubular member that surrounds at least a portion of the frame. The clip can have a hingeless, rotatable configuration wherein the clip rotates relative to or about a portion of the frame to facilitate engagement of the lens relative to the frame. The clip can also have a hingeless, translatable configuration wherein the clip translates along at least a portion of the frame to facilitate engagement of the lens with respect to the frame.

In some embodiments, the clip may be configured as a split ring with a notch or split. The split ring can surround or encircle a portion of the frame, defining a gap or opening by encompassing, for example, at least about 50% and/or less than or equal to about 80% of the circumference or circumference of a portion of the frame, and at least about 20% and/or less than or equal to about 50% of the clip. In the embodiment of the rotating clip, a notch or opening can be configured such that at least a portion of the lens can be received in the notch or opening to secure the lens relative to the frame. In these embodiments, the protrusion may be provided at one of the free ends forming the notch or opening.

In some embodiments, embodiments of the translating clip can engage a groove in the lens. For example, the lens can be positioned against the frame with the clip placed in a first translational position or disengaged position adjacent the groove of the lens. The clip can then be translated within the slot toward a second translational or engaged position, thereby securing the lens relative to the frame.

In some embodiments, the clip can be configured to snap onto the frame. The clip can be brought onto the frame with a portion of the frame passing through the notch or opening of the clip. In some embodiments, the clip can be constructed of a resilient material such that the clip is deflected to allow for enlargement of the notch or opening to enable attachment of the clip to the frame. The clip can be attached to the frame without the need for a nail, pin, or other component. The embodiments disclosed herein can thus allow for good assembly and maintenance of the eyeglasses as compared to other designs. In addition, the design can be durable and robust, providing adequate and secure retention despite stresses or other forces that may act on the frame.

Further, the clip may be rotatable, the notch or opening moving from a first rotational or disengaged position capable of receiving a portion of the lens within the notch or opening to a second rotational or engaged position in which the notch or opening is rotated such that the clip engages a portion of the lens. Rotation of the notch or opening enables quick and secure engagement with the lens.

In some embodiments, the clip can define an outer profile that tapers and blends with a surface of the frame. For example, the clip can define a contour or profile that blends with a contour or profile of the frame. In some embodiments, the contours or profiles may merge in only one of the first or second rotational positions. For example, the mismatch in profiles can provide a visual and tactile indication that the clip is in the disengaged position, while the clip and the frame have a generally consistent, smooth profile when the clip is in the engaged position.

In some embodiments, the clip can rotate and/or translate about a horizontal axis such that the tab moves in a generally anterior-posterior direction to engage the lens. For example, the tabs may be rotated in generally vertical anterior and posterior planes to align the lenses to engage the lenses. In addition, the tabs can translate along the frame to align the lenses as the clip rotates in a generally vertical front-to-back plane to engage the lenses.

In some embodiments, the clip can rotate and/or translate about a vertical axis. In these embodiments, the tab can be rotated in a generally horizontal plane to align the lens in a generally vertical plane to engage the lens.

For example, the engagement structure of the retention component can include a tab pivotally coupled to the frame such that the tab can rotate about a vertical axis. Optionally, the retention component can include a shaft coupling the retention component to the frame. Further, the retention component may optionally include an actuation element mechanically coupled with the tab such that the actuation element may be used to rotate the tab.

In some embodiments, the frame can include a recess or aperture configured to receive and/or support the retention component. For example, a recess or aperture of the frame can support the retention component, thereby transferring a force (applied in at least one direction) on the retention component to the frame. The recess and aperture of the frame can optionally be configured to support the retention component such that forces applied to the retention component in multiple directions are transferred to the frame.

For example, in embodiments where the retention component rotates and/or translates about a horizontal axis, the retention component can engage a horizontal portion of the frame. As mentioned above, the engagement may be a snap-fit engagement. The holding member may be mounted above and rotatable about the horizontal portion. Additionally, the retention component can be woven or mounted within a horizontally extending recess or space in the frame.

Further, in embodiments where the retention component rotates and/or translates about a vertical axis, the retention component can engage a vertical portion of the frame. For example, the retaining member may be sleeved over and rotated about the vertical portion. In addition, the retention component can be woven or mounted within a vertically extending recess or space in the frame.

The retention component can also include a plurality of clips disposed along the frame of the eyeglasses. In these embodiments, the frame of the eyewear may or may not be configured with opposing connectors, terminal recesses and/or protrusions for engaging the connectors, protrusions and/or stops of the lenses to mount the lenses in the mounted position. For example, multiple clips can be used as separate connectors to mount and secure lenses separate from the frame.

Further, the holding member may be formed solely by the frame. For example, the retention component can be coupled to the frame and can rotate or slide relative to the frame. In some embodiments, the retention member can be advanced from a first orientation (or disengaged position) to a second orientation (or engaged position) to engage the lens. For example, the frame and the retention component can also be configured to allow a predetermined range of rotational or axial movement of the retention component. In one embodiment, the frame can include one or more hard stop features that can enter one or more corresponding stops or recesses in the retention component. The retention component can be rotated in a given direction until the hard stop feature of the frame contacts a stop or recess of the retention component to limit further rotation of the retention component.

For example, in embodiments where the retention member comprises a rotating clip, the clip can be rotated between two or more rotational positions, and the hardstops of the clip and the frame limit the movement of the clip in one or more positions. For example, the clip can be configured to include an interior having one or more protrusions that engage with one or more protrusions or recesses of the frame. In certain embodiments, the hard stop is not visible when in the assembled state. In addition, the engagement between the rotating clip and the frame can also produce a desired interaction between the clip and a corresponding hard stop of the frame.

Further, embodiments are provided wherein the lens comprises an engagement portion engageable and/or supportable by the retention member. The engaging portion of the lens can include at least one of a recess, a surface profile, an opening, a protrusion, a groove, an aperture, and other such surface structures formed in any of a variety of shapes and/or sizes. For example, in some embodiments, the engagement portion can be a hole extending through the thickness of the lens. The engagement structure can also be an opening extending through the thickness of the lens and extending inwardly from the periphery of the lens. Further, some embodiments can be configured such that the frame includes an engagement portion that is engaged by a retention component that is supported by the lens.

Drawings

The above and other features of the invention disclosed herein are described with reference to the drawings of the preferred embodiments. The illustrated embodiments are intended to illustrate, but not to limit the invention. The drawings include the following figures:

FIG. 1 is a perspective view of eyewear including a retention component that secures a lens to an eyewear frame according to an embodiment of the present invention;

FIG. 2 is a perspective view of a lens including a groove engageable by a retention feature of the eyewear shown in FIG. 1, in accordance with one embodiment;

FIG. 3 is a top perspective view of a frame of the eyewear shown in FIG. 1, according to one embodiment;

FIG. 4 is a bottom perspective view of a frame of the eyewear shown in FIG. 1 according to one embodiment;

FIG. 5 is an enlarged perspective view of a middle portion of the eyewear shown in FIG. 1, in accordance with one embodiment, with the retention feature in a disengaged position;

FIG. 6 is a bottom perspective view of a middle portion of the eyewear shown in FIG. 1 with the retention features in a disengaged position according to one embodiment;

FIG. 7 is an enlarged perspective view of a middle portion of the eyewear shown in FIG. 1, in accordance with one embodiment, with the retention features in an engaged position;

fig. 8 is a bottom perspective view of a middle portion of a frame according to one embodiment with a retention component in an engaged position;

FIG. 9 is a cross-sectional side view of a frame, a retention component, and a lens with the retention component in a disengaged position and the lens separated from the frame according to one embodiment;

FIG. 10 is a cross-sectional side view of a frame, a retention component, and a lens with the retention component in a disengaged position and the lens in a notch of the frame according to one embodiment;

FIG. 11A is a cross-sectional side view of a frame, a retention component, and a lens according to one embodiment, wherein the retention component is in an engaged position and the lens is positioned in a notch of the frame such that the retention component engages the lens;

FIG. 11B is a cross-sectional side view of a frame, a retention component, and a lens according to another embodiment, wherein the retention component is in an engaged position and the lens is positioned in a notch of the frame such that the retention component engages the lens;

fig. 12 is a perspective view of eyewear including a retention component that secures a lens to an eyewear frame according to another embodiment.

FIG. 13 is a perspective view of a lens including a groove that can be engaged and/or supported by the retention feature of the eyewear shown in FIG. 12 in accordance with one embodiment;

fig. 14 is a perspective view of another eyeglass, frame, and retention component according to another embodiment;

FIG. 15 is a perspective view of a retaining member of the eyewear of FIG. 12 in accordance with one embodiment;

FIG. 16 is a cross-sectional elevation view of a frame of the eyewear of FIG. 12 showing a recess configured to support the retention component shown in FIG. 15, in accordance with one embodiment;

FIG. 17 is a cross-sectional front view of a frame and a retention component of the eyewear of FIG. 12 in which the retention component is in a disengaged position, according to one embodiment;

FIG. 18 is a cross-sectional front view of a frame and a retention component of the eyewear of FIG. 12 in which the retention component is in an engaged position, according to one embodiment;

FIG. 19 is a cross-sectional front view of the frame and the retention component of the eyewear of FIG. 12 with the retention component in an engaged position and engaged with the lenses according to one embodiment;

Detailed Description

While this specification recites specific details of various embodiments, it is understood that the specification is illustrative only and should not be construed as limiting in any way. Furthermore, although specific embodiments of the present invention are disclosed or illustrated in the context of a single lens eyeglass system or a dual lens eyeglass system, these embodiments can be used in both single and dual lens eyeglass systems. Further, while the embodiments disclosed herein can be used with eyeglasses having removable and replaceable lenses, embodiments are also contemplated in which the eyeglasses are not used to provide removable or replaceable lenses.

Further, while particular embodiments of the present invention are disclosed or illustrated in the context of a partially orbital frame, these embodiments can be used with frames having both full and partial orbitals. Retention features and structures according to embodiments disclosed herein may also be used to retain a lens or lens configurations within eyewear, such as ski goggles or motocross goggles. It is also possible to use the holding part either as a primary connector or as a secondary connector to cooperate with another lens holding system. Further, various applications of these embodiments and modifications to these embodiments may occur to those skilled in the art and are also encompassed by the general concepts described herein.

For example, certain embodiments can provide eyewear that includes a frame and at least one retention component or lens lock. The frame can be configured to support at least one lens in a field of view of a wearer. The frame can include a first earstem and a second earstem. The frame may be worn on the head of the wearer. The at least one retention component can be supported by the frame and/or by the at least one lens. The retention component can move relative to the frame and/or the lens. For example, the at least one retention component can rotate relative to the frame and relative to the lens to secure the at least one lens relative to the frame. The at least one retaining member may be hingeless. In some embodiments, the retention component can engage an engagement portion of the lens to prevent separation of the lens from the frame due to a shock event. Further, some embodiments can be configured such that the frame can include an engagement portion that can be engaged by a retention component, wherein the retention component is supported by the lens.

The retention component or lens lock of the eyewear can be configured to rotate relative to the frame and/or the lens to engage a respective one of the lens and/or the frame. The retention component or lens lock can be permanently or removably mounted to the frame and/or the at least one lens. The retention component can include a clip located in the middle of the frame. The clip can be actuated by a wearer to secure the middle portion of the lens to the frame. The retention component can be movable from a first orientation in which the lens can move freely relative to the frame to a second orientation in which the lens is fixed relative to the frame.

For example, the retention component can rotate about a generally horizontal axis relative to the frame to engage the frame and/or the lens. Additionally, the retention component can include a rotatable clip mounted on the frame and/or the lens. The rotating clip can include an engagement structure operable to engage an engagement portion of the lens and/or the frame.

The rotating clip may further comprise a generally tubular or cylindrical body, and the engagement structure may comprise an engagement tab extending generally circumferentially relative to the cylindrical body. The tubular or cylindrical body can be configured to engage the recess of the frame to mount the retention component on the frame. The protrusion can have a first direction in which the lens can move relative to the frame and a second direction in which the protrusion engages the lens to secure the lens to the frame. For example, the tab of the clip can engage the lens at an angle of at least about 5 degrees and/or less than or equal to about 40 degrees relative to horizontal. In some embodiments, the tab of the clip can engage the lens at an angle of about 19.2 degrees relative to horizontal.

In addition, the retention component can fit over the recess of the frame to be rotatable about the longitudinal axis of the frame. For example, the holding member may be mounted on the recess in a snap-fit manner. In some embodiments, the engagement portion of the lens may include one of a recess and an aperture engageable by the engagement structure of the rotating clip.

In other embodiments, the retention component can rotate about a generally vertical axis relative to the frame to engage the frame and/or the lens. For example, the retention feature may include an actuating handle and at least one tab that is rotatable with rotation of the handle. The tab may extend generally transversely relative to the generally vertical axis. The protrusion can have a first direction in which the lens can move relative to the frame and a second direction in which the protrusion engages the lens to secure the lens to the frame. For example, the retention member can rotate in a plane that is generally coplanar with at least a portion of the lens. Further, the retention member may include an elongate shaft extending between the handle and the tab. Further, the frame can include a recess configured to receive at least a portion of the retention component to support the retention component relative to the frame. Further, the wearer may use the handle to actuate the retention component.

The eyewear may optionally be configured such that the at least one lens includes at least one first connector and such that the frame includes at least one second connector. The at least one lens may be a single lens or a dual lens. The first connector of the lens can engage the second connector of the frame to limit movement of the lens relative to the frame. For example, the first connector of the lens can comprise opposing side connectors and the second connector of the frame can comprise opposing side connectors. The connector of the frame can include opposing lateral terminal recesses and/or protrusions. The connector of the lens may comprise corresponding opposing side projections and/or stops or recesses. For example, the terminal recesses and/or protrusions of the frame can be configured to at least partially receive or engage the protrusions and/or recesses of the lens. When mounted together, the terminal recesses and/or protrusions of the frame and the protrusions and/or recesses of the lens can limit movement of the lens relative to the frame.

In some embodiments, the connector of the frame can include opposing lateral terminal recesses and/or protrusions and the connector of the lens can include corresponding protrusions and/or recesses. The connector of the frame and the connector of the lens can engage to mount the lens to the frame in a mounted position. For example, the terminal recesses and/or protrusions of the frame can be configured to partially receive or engage at least the protrusions and/or recesses of the lens. When mounted together, the terminal recesses and/or protrusions of the frame and the protrusions and/or recesses of the lens can limit movement of the lens relative to the frame. The frame can include a lens notch. The lens slot can extend at least partially along the frame to receive at least a portion of the lens therein.

In some embodiments, at least one lens of the eyewear may include an engagement portion. Further, the frame of the eyeglasses can have a generally horizontal longitudinal axis and a pair of lugs extending rearwardly relative to the frame. The frame can be configured to support the at least one lens in a field of view of the wearer. Further, the eyewear can be configured such that the at least one retention mechanism is coupled to the frame and rotatable about a longitudinal axis of the frame. The retention mechanism may include an engagement structure extending therefrom. The engagement structure is movable from a first orientation in which the lens is free to move relative to the frame to a second orientation in which the retention structure engages the engagement portion of the lens to secure the lens relative to the frame.

The frame can further include at least one stop element configured to limit a rotational direction of the retention mechanism relative to the frame. The retention mechanism can further include at least one stop element corresponding to the at least one stop element of the frame. The stop elements can be configured to contact one another to limit the rotational direction of the retention mechanism relative to the frame.

In some embodiments, the retention mechanism can include first and second stop elements that interact with at least one stop element of the frame. The retaining mechanism may have a variety of shapes and structural features, such as including a generally cylindrical body having an engagement structure extending generally circumferentially therefrom. For example, the at least one stop element of the retaining mechanism may be formed along an inner surface of the retaining mechanism. Further, the at least one stop element of the retention mechanism can comprise a recess and the at least one stop element of the frame can comprise a protrusion.

The engagement structure of the retention mechanism may include a protrusion that engages the engagement portion of the lens at an angle of at least about 5 degrees and/or less than or equal to about 40 degrees relative to a line perpendicular to the lens. Further, in certain embodiments, the protrusions can engage the engagement portion of the lens at an angle of at least about 10 degrees and/or less than or equal to about 20 degrees relative to a line perpendicular to the lens. For example, the protrusion may engage the engagement portion of the lens at an angle of about 19.2 degrees.

Referring to fig. 1, an embodiment of the present invention is shown. In this embodiment, eyewear 10 is shown, which includes a pair of ear stems 12, 14, a frame 16, a retention member 18, and a lens 20. The eyewear 10 shown in fig. 1 is configured such that the lenses 20 can be removed and replaced. However, in other embodiments, the lens may not be removable or replaceable. However, these embodiments may provide increased lens stability and impact resistance, similar to the embodiment shown in fig. 1.

Fig. 2 illustrates an embodiment of a lens 20 for use with the eyeglass 10. The lens 20 can be configured to be supported by the frame 16. For example, the lens 20 may include one or more engagement portions that may engage with one or more retention features of the eyewear to support the lens. In addition, other structures may be used to support the lens. For example, the frame can include one or more connectors, such as opposing terminal recesses and/or protrusions, and the lens can include one or more connectors, such as protrusions and/or recesses that can engage with the connectors of the frame. For example, fig. 2 shows opposing convex portions of a lens mounted within a terminal recess and/or convex portion of a frame. However, the use of structures such as protrusions and recesses in the frame and lenses is optional and may be omitted in some embodiments. For example, where two or more retaining members and engaging portions are spaced along the edge of the lens, structures other than retaining members and engaging portions may be redundant.

As will be appreciated with reference to fig. 1-4, the lenses 20 of the eyeglass 10 are selectively removable and replaceable by the wearer. For example, the wearer may replace the lens 20 with a lens having a different color and shape. In some embodiments, the wearer can engage interlocking connectors (such as protrusions and/or stops or recesses of the lenses 20) with corresponding connectors (such as opposing terminal recesses and/or protrusions of the frame 16) to remove and replace the lenses 20.

For example, as shown in fig. 2 and 4, the lens 20 can include connectors, such as a pair of protrusions 30, 32, which can be located in corresponding connectors, such as end recesses 34, 36, of the frame 16. In use, when the protrusions 30, 32 are received in the terminal recesses 34, 36 of the frame 16, the lens 20 can generally snap into and be retained in the lens notch 54 in the frame 16. Thus, in certain embodiments, such an arrangement can provide a greater degree of lens retention and stability in addition to that provided by the retention component.

According to the embodiment shown in fig. 1-4, lens 20 may further include an engagement portion or structure 50. Engaging portion 50 can comprise at least a portion of lens 20, can be a recess, surface contour, opening, protrusion, groove, aperture, and other such surface structures and can be formed in a variety of shapes and/or sizes. For example, in the illustrated embodiment, the engagement portion 50 is shown as a hole extending through the thickness of the lens 20. The engaging portion 50 is shown as a single hole, but may be formed as a plurality of holes. The engaging portion 50 can extend generally parallel relative to a line perpendicular to the lens 20 (as shown, for example, in fig. 11A). Further, the engaging portion 50 can extend generally transversely relative to a line perpendicular to the lens 20 (as shown, for example, in fig. 11B).

The engagement portion 50 can be located anywhere along the lens 20, preferably anywhere along the lens-frame boundary 52 of the lens 20. The lens-frame boundary can be defined as one or more portions of the lens along which the lens and frame abut, overlap, or interconnect with each other. For example, referring to fig. 1-2, the lens-frame boundary 52 is generally the upper portion of the lens adjacent the upper edge of the lens that is located within the notch 54 (shown in fig. 4) of the frame 16. Thus, while the embodiment of the lens 20 shown in fig. 2 uses a single engagement portion 50, other embodiments of the lens 20 can be configured to include two or three or four or more engagement portions 50 disposed along the lens-frame boundary 52.

Further, as described above, while the engagement portion 50 is shown as a hole, the engagement portion 50 may also include protrusions, detents, and/or other engagement portions shaped and sized to allow interconnection of the lens 20 with the retention member 18. Further, as described above, the lens 20 may include a single lens system and a dual lens system. For example, one or more engaging portions may be used in each lens of a dual lens system as desired. Additionally, the lens 20 can be mounted in a orbital frame. The lens-frame boundary 52 can extend around the perimeter of the lens 20 (or the perimeter of two lenses together in a dual lens system). In such embodiments, one or more engagement portions can be selectively provided along a lower portion, a side portion, or a middle portion (such as adjacent a bridge opening of a lens), and the frame can further include a corresponding retention component configured to engage with a corresponding engagement portion of a lens.

Referring to fig. 5 to 8, the function and operation of an embodiment of the retaining member 18 will now be described. In fig. 5 to 6, the holding member 18 is in the disengaged position 70. Further, in fig. 7 to 8, the holding member 18 is located at the engaging position 72. It will be appreciated by those skilled in the art that when the retention member 18 is in the disengaged position 70, the retention member 18 does not engage the corresponding engagement portion 50 of the lens 20. However, when the retention member 18 is in the engaged position 72, the retention member 18 can engage the corresponding engagement portion 50 of the lens 20, as shown in FIG. 7.

To facilitate engagement with the engagement portion 50 of the lens 20, the retention member 18 can include a protrusion or recess that engages the corresponding engagement portion 50. As shown in fig. 5-8, the retaining portion 18 may include a tab 80 extending from a body 82 of the retaining member 18. In the illustrated embodiment, the tab 80 may be configured to fit or be disposed within an aperture of the engagement portion 50. The tabs 80 of the retention component 18 provide an interference engagement to prevent the lens 20 from disengaging the frame 16 or from the lens notch 54 of the frame 16.

As shown in fig. 5-8, in some embodiments, the retention component 18 can rotate relative to the frame 16 and relative to the lens 20. Additionally, the retention component 18 can be a hingeless clip that defines an outer profile that tapers and blends with a surface of the frame 16. For example, the clip 18 can define a contour or profile that blends with a contour or profile of the frame 16. In some embodiments, the contours or profiles may merge in only one of the first or second rotational positions. For example, the mismatch in profiles (as shown in fig. 5-6) can provide a visual and tactile indication that the clip 18 is in the disengaged position, while the clip 18 and the frame 16 have a generally consistent, smooth profile when the clip is in the engaged position (as shown in fig. 7-8).

Referring to fig. 9-11B, an embodiment of the retention component 18 is shown coupled to a rotatable component of the frame 16. The body 82 of the retention component 18 can be configured in a generally annular or tubular shape that surrounds at least a portion of the frame 16. For example, the body 82 can be configured as a split ring that encircles or surrounds a portion of the frame 16 (as seen in the side views of fig. 9-11). The retention component 18 can surround, for example, at least about 50% and/or less than or equal to about 80% of the circumference or circumference of a portion of the frame 16, while at least about 20% and/or less than or equal to 50% of the retention component 18 defines a notch or opening 90.

Additionally, a notch or opening 90 can be configured to receive at least a portion of a lens therein to secure the lens relative to the frame 16. Thus, when rotated to the disengaged position 70, the notch or opening 90 can be aligned with a portion of the frame 16, such as the notch 54. Thus, the retention component 18 can allow at least a portion of the lens 22 to enter the notch 54 of the frame 16. Further, in the embodiment shown in fig. 5-11B, the tab 80 may be disposed at one of the free ends forming the notch or opening 90. The retention member 18 can be rotated from a first rotational or disengaged position to a second rotational or engaged position in which the tab 80 and notch or opening 90 are rotated so that the tab 80 of the retention member 18 engages a portion of the lens. Rotation of the notch or opening may enable quick and secure engagement with the lens.

In some embodiments, the retention component 18 can be configured to snap onto the frame 16. In embodiments where the retention component is a clip 18, the clip can be forced onto the frame 16 by passing a portion of the frame 16 through a notch or opening 90 in the clip. In some embodiments, the clip can be constructed of a resilient material such that the clip flexes to allow for enlargement of the notch and opening 90 so that the clip can be attached to the frame 16. The clip can thus be attached to the frame 16 without the need for a nail, pin, or other component. The embodiments disclosed herein can therefore allow for good assembly and maintenance of the eyeglasses as compared to other designs. Further, the design may be durable and strong, providing adequate and secure retention despite stresses or other forces that may act on the eyewear.

In some embodiments, the retention component 18 can be configured to mount to the lens 22 such that when the lens 22 is mounted to the frame 16, the retention component 18 engages a corresponding retention structure in the frame 16. For example, the retention member 18 may be mounted such that the retention member 18 is movable relative to the lens 22. However, the retention member may be fixed relative to the lens 22. The retention member 18 may be permanently mounted to the lens 22. The retention member 18 may be removably mounted to the lens 22. Thus, in some embodiments, the clip or retention member 18 need not be part of the frame 16 or carried or supported by the frame 16. The various embodiments and features discussed herein with respect to the retention component 18 in the embodiments in which the retention component 18 is carried or supported by the frame 16 can be incorporated into embodiments in which the retention component 18 is mounted to the lens 22.

As shown in fig. 10, when the retention member is in the disengaged position 70, the lens 20 can be positioned within the notch 54 of the frame 16. Next, as shown in fig. 11, when the holding member 18 is rotated to the engagement position 72, the protrusion 80 of the holding member 18 advances into the hole of the engagement portion 50 of the lens 20. As a result, when the lens 20 is engaged with the frame 16 in the retention member 18, movement of the lens 20 in all directions can be substantially limited.

For example, the eyeglass 10 can tend to provide excellent impact resistance and lens stability during use. Further, embodiments of eyewear can be provided in which one or more retention components are used to attach a lens to a frame. In such embodiments, the lens can be coupled to the frame in a manner that does not deform the lens or destroy its optical properties. As a result, embodiments of the eyewear disclosed herein can provide excellent optical properties as well as excellent impact resistance and lens stability.

Further, as shown in the embodiments of fig. 9-11B, the eyewear may include a motion limiting mechanism. For example, the retention component 18 can include one or more stop elements configured to interact with one or more stop elements of the frame 16. For example, the retention component 18 can include a rear stop element 92 and upper and lower front stop elements 93, 94, the rear stop element 92 and upper and lower front stop elements 93, 94 configured to interact with corresponding ones of a rear stop element 96 and a front stop element 98 of the frame 16. As shown in fig. 9-11, the stop elements 92, 93, 94, 96, 98 can inhibit rotational movement of the retention component 18 relative to the frame 16. For example, the use of stop members 92, 93, 94, 96, 98 may facilitate accurate movement from the disengaged position 70 to the engaged position 72, and vice versa. Further, in some embodiments, the stop elements 92, 93, 94, 96, 98 can also be used to lock the retention component 18 relative to the frame 16 to prevent relative rotational movement. This feature may be advantageous when the retaining member 18 is moved to an engaged position 72 where it may be snapped into place or otherwise retained against inadvertent disengagement.

In the illustrated embodiment, the frame 18 includes a pair of stop elements 96, 98, the pair of stop elements 96, 98 being formed as protrusions extending from an outer surface of the bridge of the frame 16. Although two stop members 96, 98 are shown, a single stop member may be used. Furthermore, in embodiments using two stop elements, the stop elements may provide different functions for the retaining member 18.

For example, the rear stop member 96 may be relatively longer than the front stop member 98 and primarily inhibit rotation in a given direction. The front stop member 98 may provide an engagement function for limiting or substantially fixing the rotational position of the retaining member 18. The backstop element 96 may tend to limit the rotational position of the holding member 18.

In use, the retention member 18 may be moved from the first selected or disengaged position 70 by some initial application of force to overcome the engagement between the lower, forward stop element 98 and the lower, forward stop element 94 of the retention member 18. The holding member 18 may continue to rotate until rotationally restrained or stopped by the rear stop member 96 and the front stop member 92. Furthermore, the retention feature 18 may be substantially limited to the second rotational or engagement position 72 due to the engagement between the front stop member 98 and the upper, front stop member 93. Although the illustrated embodiment shows at least two stop elements of the retention component 18 interacting with at least two stop elements of the frame 16, the motion limiting mechanism can include a single stop on the frame and a single stop on the retention component; the stops may interact to provide rotational limitation and substantial fixation of the rotational position.

Thus, in embodiments where the retention components 18 comprise rotating clips, the clips can be rotated between two or more rotational positions, and the hard stops or stop elements 92, 93, 94, 96, 98 of the clips and the frame 16 limit the movement of the clips at one or more of these positions. As shown, the retention component 18 can include an inner surface having one or more recesses 92 that engage one or more protrusions 94 of the frame 16. Additionally, the retention component 18 can include an inner surface having one or more protrusions that engage one or more recesses of the frame 16. In some embodiments, the hard stop is not visible when in the assembled state. In addition, the engagement between the rotating clip and the frame can also produce a desired interaction between the clip and a corresponding hard stop of the frame.

While fig. 9-11B illustrate the embodiment of the retention component 18 as being rotatable relative to the frame 16, the retention component 18 can be configured to rotate or slide relative to the frame 16. In some embodiments, the retention component 18 can be pivotally coupled to a portion of the frame 16. However, in the illustrated embodiment, the retention component 18 is configured to rotate about the frame 16 to allow the tab 80 to engage the engagement portion 50 of the lens 20.

Further, the retention component 18 may include an elastomeric material, such as a compressible or flexible material, disposed at least along the tab 80 of the retention component 18. As a result, the impact event will not tend to cause damage to the interconnection between the retaining member 18 and the engagement portion 50. In such embodiments, the protrusion 80 may be formed from or include a coating, a ply, or one or more surface features formed from such a resilient or flexible material. The retention device 18 (such as the tab 80 and/or the resilient or flexible material) may have a modulus of elasticity less than the modulus of elasticity of the lens. Further, the retention device 18 (such as the tab 80 and/or the resilient or flexible material) can have a modulus of elasticity that is less than the modulus of elasticity of the frame. Thus, at least a portion of the retaining member 18 may mitigate or absorb forces or vibrations from an impact event.

Further, the retention member 18 can be configured such that during rotation of the retention member 18 and engagement with the engagement portion 50 of the lens 20, the lens 20 can be brought into the notch 54 to secure the lens 20 within the notch 54. This feature may be facilitated using a cam-like motion of the retention member 18 or a cam-like interaction between the tab 80 and the engagement portion 50.

In some embodiments, the tab 80 maintains engagement of the member 18 with the engagement portion 50 of the lens 20 in an engaged position (as shown in fig. 11A-11B) at a desired engagement angle 100 configured to maximize stability, retention, and resiliency of the eyeglass in response to an impact event.

The engagement angle 100 can be defined as the angle measured between the tab 80 (such as a longitudinal or circumferential centerline or tab axis 102) and a line 104 perpendicular to the lens 20. The normal 104 may be a line perpendicular to the lens 20 at about the engagement portion 50 of the lens 20.

In some embodiments, the line 104 may be generally parallel to an axis 106 of the engagement portion 50, as shown in the embodiment of fig. 11A. Further, in some embodiments, the tab axis 102 can be generally parallel to a longitudinal centerline or axis 106 of the engagement portion 50 of the lens 20. For example, as shown in the embodiment of fig. 11B, tab axis 102 may be oriented generally parallel to axis 106 of engaging portion 50 and transversely with respect to normal 104 of lens 20.

The engagement angle 100 can be oriented to ensure optimal retention of the lens 20 relative to the frame 16. For example, in any of the embodiments shown in fig. 11A-11B and others, the engagement angle 100 may be about 5 degrees and/or less than or equal to about 40 degrees relative to a horizontal plane. Further, in certain embodiments, the protrusion 80 can engage the engagement portion of the lens at an engagement angle 100 of at least about 10 degrees and/or less than or equal to about 30 degrees relative to horizontal. In certain embodiments, the engagement angle 100 may be about 12 degrees. In other embodiments, such as the embodiment of fig. 11B, a meshing angle 100 of about 19.2 degrees has been found to provide excellent results in ballistic testing.

Further, the range of rotation of the retaining member 18 between the engaged and disengaged positions may be at least about 10 degrees and/or less than or equal to about 180 degrees. For example, as shown in fig. 10 to 11B, the holding member 18 may be rotated about 45 degrees from the engaged position to the disengaged position.

In some embodiments, the tab 80 can retain the member 18 in engagement with the engagement portion 50 of the lens 20, with the front end 110 of the tab 80 extending through the engagement portion 50. For example, fig. 11A-11B illustrate the front end 110 extending to the other side or across the width of the lens 20. However, the front end 110 may extend only partially to the engagement portion 50 or beyond the engagement portion 50. For example, the leading end 110 may extend through the engagement portion 50 at least about 5 degrees and/or less than or equal to about 90 degrees. Thus, the front end 110 can be rotated downward from the frame 16, through the lens 20, and back into the frame 16. In some embodiments, the front end 110 can snap or engage the frame 16 to achieve a locking fit in the engaged position.

Referring now to fig. 12-19, another embodiment of eyewear having a retention mechanism is shown. Fig. 12 is a perspective view of an eyeglass 300, wherein the eyeglass 300 comprises a frame 302, a pair of earstems 304, 306 extending rearwardly from the frame 302, a lens 308, and a retention mechanism 310. In this embodiment, the retention mechanism 310 can be hidden within the frame 302, such that the eyewear 300 retains the appearance of conventional eyewear while exhibiting excellent impact performance.

Fig. 13 illustrates an embodiment of a lens 308 for use with eyeglasses. The lens 308 can be configured to be supported by the frame 302. For example, the lens 308 may include one or more engagement portions that may engage with one or more retention features of the eyewear to support the lens. In addition, other structures may be used to support the lens. For example, the frame can include one or more connectors, such as opposing terminal recesses, and the lens can include one or more connectors, such as a protrusion mounted to a terminal recess of the frame. However, the use of connectors (such as protrusions and terminal recesses in the frame and lenses) is optional and may be omitted in some embodiments. For example, where two or more retaining members and engaging portions are spaced along the edge of the lens, structures other than retaining members and engaging portions may be redundant.

In some embodiments, the lens 308 can include connectors, such as a pair of protrusions 320, 322, which can be located in corresponding connectors, such as end recesses 324, 326, of the frame 302. In addition, the lens 308 may include an upper edge or border 330. In use, when the protrusions 320, 322 are installed in the terminal recesses 324, 326 of the frame 302, an upper edge or border 330 of the lens 308 can generally snap into and be retained in a lens notch 332 in the frame 302. Thus, in certain embodiments, such an arrangement can provide a greater degree of lens retention and stability in addition to that provided by the retention component.

According to the embodiment shown in fig. 12-19, the lens 308 may further include an engagement portion 350. The engagement portion 350 can include at least a portion of the lens 308 and can be one of a recess, a surface contour, an opening, a protrusion, a groove, a hole, and other such surface structures and formed in various shapes and/or sizes. For example, in the illustrated embodiment, the engagement portion 350 is shown as an aperture extending through the thickness of the lens 308. Further, the engaging portion 350 is shown as a single aperture, but may be formed as a plurality of apertures. Further, the engaging portion 50 may be formed to include a narrow portion 352 and a wide portion 354.

Referring now to FIG. 15, an embodiment of a retaining member 360 is shown. The retention component 360 can be configured to engage and secure the lens 308 relative to the frame 302. For example, the retaining member 360 may be in one of an engaged position and a disengaged position. In the engaged position, the retention component 360 can interlock, engage, and/or secure at least a portion of the lens 308 relative to the frame 302. In the disengaged position, the retention member 360 can allow the lens 308 to move freely relative to the frame 302. Further, the retention component 360 may be manually actuated by the wearer to allow the wearer to exchange lenses.

In the illustrated embodiment, the retention feature 360 may include a switch or handle 362 and at least one tab 364. The retention member 360 may be configured to rotate about an axis that is generally perpendicular relative to the eyewear 300. The handle 362 may be actuated by the wearer. In certain embodiments, the retention feature 360 may include an elongate shaft 366 extending between the handle 362 and the tab 364. Further, these embodiments may be configured such that the holding member 360 includes a pair of protrusions 364. As shown, the tabs 364 may extend in generally opposite horizontal directions and attach to a lower or bottom end of the retaining member 360.

The tab 364 can be positioned adjacent the lens 308 to engage the lens 308 such that the tab 364 can be in an engaged position or a disengaged position relative to the lens 308 to engage the lens 308. Fig. 17 and 18 illustrate the engaged and disengaged positions of the retention member 360 relative to the frame 302. Further, fig. 19 shows the retention member 360 engaged with the lens 308 in the engaged position.

Fig. 14 is an enlarged perspective view of the eyeglasses 300 and the retention mechanism 310. Fig. 16 is a cross-sectional front view of the frame 302 of the eyewear 300 taken along the line of fig. 12. As shown, the frame 302 can include a recess 370, the recess 370 configured to support the retention component 360 shown in fig. 15 in accordance with an embodiment. Fig. 16 also shows a lens slot 332 extending along the frame 302. The recess 370 may be configured to allow the tab 364 of the retention member 360 to pass downward toward the lens slot 332. Further, the recess 370 may include a handle receiving portion 372 at an upper end thereof for receiving at least a portion of the handle 362 of the retaining member 360. As shown in fig. 14, the recesses 370 may include notches in a rotationally stepped distribution. These indentations may be configured to allow rotation of the tab 364 of the retaining member 360 as it enters the recess 370, which may limit axial or vertical movement of the retaining member 360 (and inadvertent removal of the retaining member from the recess 370). In this way, the retaining member 360 may be securely positioned within the recess 370 and retained by the recess 370. In use, the recess 370 may allow the retaining member 360 to rotate within the recess 370, with the handle 362 being able to pivot within the portion 372 of the recess 370. In addition, the frame 302 can include a protuberance 374, the protuberance 374 providing a stop and/or frictional resistance to movement of the handle 362 thereon. Thus, unintentional rotation and disengagement of the retaining member 360 may be substantially avoided.

Further, as shown in fig. 17 and 18, when the retention member 360 is positioned in the recess 370, the tab 364 may be placed within the lens notch 332 or extend within the lens notch 332. Accordingly, the tab 364 may be rotated to position the retaining member 360 in the disengaged position, as shown in fig. 17. When the retention member 360 is in the disengaged position, the lens 308 can be placed in the lens notch 332 with the protrusion 364 fitting into the narrow portion 352 of the engagement portion 50 of the lens 308. Further, as shown in FIG. 19, the retention member 360 can be rotated to the engaged position such that the at least one tab 364 rotates to fit within the wide portion 354 of the engagement portion 350 of the lens 308. The retention member 360 can thus rotate in a plane that is generally coplanar with the engagement portion 350 of the lens. Thus, the retention member 360 can rotate within the engagement portion 350 of the lens 308 to selectively engage or disengage the lens.

The embodiment shown in fig. 12-19 enables the retention member 360 to interlock or couple with the lens 308 relative to the frame 302. Notably, by fitting the upper edge or border 330 of the lens 308 into the lens notch 332 and engaging the tab 364 with the engagement portion 350 of the lens 308, translation and rotation of the lens 308 relative to the frame 302 can be substantially limited. By this design, the impact strength of the eyewear can be substantially increased.

The retention components taught herein can provide superior impact resistance to the lenses and frames of eyeglasses. The retention component may be integral with or carried or supported by the frame of the eyeglasses. The retention component can also be integral with or carried or supported by one or more lenses supported by the frame. The retention member may also be formed as a separate component that can be retrofitted onto existing eyewear. In some embodiments, the retention component can limit rotational and/or translational movement of the lens relative to the frame at one or more points of engagement between the lens and the frame. Further, the retention component can comprise a portion of the frame and/or a separately formed portion of the frame that engages a portion of the lens.

Certain embodiments discussed herein provide a retention component that performs a function of engaging the frame separate from the function of engaging the lens. However, the retention component can simultaneously engage the frame and the lens together. For example, the retention component can engage a ledge of the frame on which the lens is mounted, thereby engaging the frame and engaging and limiting movement of the lens.

Embodiments of the eyewear disclosed herein may tend to ensure that the lenses are not substantially separated from the frame by a shock event. Further, embodiments of the eyeglasses can be configured such that any forces transmitted to the lenses are also transmitted to the frame of the eyeglasses while substantially maintaining engagement with the lenses and the frame. For example, although the lenses of such eyewear may be damaged (cracked or cracked), the lenses do not shatter or otherwise shift relative to the frame. Impact resistance can provide excellent protection for the wearer.

Further, the retaining member may include an elastomeric material, such as a compressible or flexible material, disposed along at least a portion of the retaining member. For example, the tabs, connectors, bodies, or other structures or components of the retention component may be formed from and/or include one or more resilient materials. As a result, the impact event will not tend to cause damage to the interconnection of the retention member between the engagement portions. In some embodiments, the projections of the retaining component may be formed from or include a coating, a ply, or one or more surface features formed from a resilient or flexible material. The modulus of elasticity of the retention member (such as the protrusion and/or the resilient or flexible material) may be less than the modulus of elasticity of the lens. Further, the retention device (such as the tab and/or the resilient or flexible material) can have a modulus of elasticity that is less than the modulus of elasticity of the frame. Thus, at least a portion of the retention member may mitigate or absorb forces or vibrations from an impact event.

The eyewear can include a plurality of retention features that engage the lenses and/or the frame to secure the lenses relative to the frame. For example, the lenses of the eyewear may engage and/or support at least two or more points along an upper edge or border of the lenses.

In embodiments including a single lens, the lens may engage and/or be supported on at least two sides or a central portion thereof. For example, on the left side of the midline, a single lens can be secured to and/or supported by the frame using a first retention structure, and on the right side of the midline, a single lens can be secured to and/or supported by the frame using a second retention structure. The retaining structure may include any clip or other mechanism disclosed herein. The first retention structure may be located at the middle of one third of the length of the frame (measured from hinge to hinge) on the left side. The second retention structure may be located in the middle of the right one-third of the frame. A third retention structure may also be used, located in the middle third of the frame, preferably on the midline. Four or five or more retaining structures may also be used depending on the desired performance. Typically, the retention components can be evenly spaced along the length of the frame as a mirror image through the plane of symmetry (the midline in the structure).

In embodiments including dual lenses, each lens may engage and/or be supported by at least one retention member. For example, to the left of the midline, a dual lens can be secured to and/or supported by the frame using a first retention structure, and to the right of the midline, a dual lens can be secured to and/or supported by the frame using a second retention structure. In some embodiments, the dual lenses may be secured, for example, by three or more retention members on either side or the middle thereof. Alternatively, the dual lenses can be secured by a single retention component and by an engagement means between the dual lenses and the frame, such as a protrusion, catch, or tab that engages a recess of the frame. As with the single mirror embodiment described above, the retention components can be spaced evenly along the length of the frame or as a mirror image across the plane of symmetry (the midline in the structure).

Although the present invention has been disclosed in the context of certain preferred embodiments and examples, it will be understood by those skilled in the art that the present invention extends beyond the specifically disclosed embodiments to other alternative embodiments and/or uses of the invention and obvious modifications and equivalents thereof. In addition, while a few variations of the present invention have been shown and described in detail, other modifications, which are within the scope of this invention, will be readily apparent to those of skill in the art based upon this disclosure. It is also contemplated that various combinations or subcombinations of the specific features and aspects of the embodiments may be made and still fall within the scope of the invention. It should be understood that various features and aspects of the disclosed embodiments can be combined with or substituted for one another in order to form varying modes of the disclosed inventions. Thus, it is intended that the scope of at least some of the inventions disclosed herein should not be limited by the particular disclosed embodiments described above.

Claims (13)

1. An eyewear, comprising:

at least one lens comprising a lateral first connector;

a frame comprising at least one lateral second connector, a first ear stem, and a second ear stem, the at least one lateral second connector of the frame configured to engage with the at least one lateral first connector of the at least one lens to support the at least one lens in a field of view of a wearer, the frame configured to be worn on the head of the wearer; and

at least one rotatable retention member supported by the frame, the retention member being rotatable relative to the frame and relative to the lens to engage an engagement portion of the lens to prevent the lens from disengaging from the frame due to a shock event, wherein the retention member rotates about a generally horizontal axis relative to the frame to engage the lens, and the retention member comprises a rotatable clip mounted on the frame of the eyewear, the rotatable clip comprising: an engagement structure for engaging an engagement portion of the lens; and a generally tubular body, wherein the engagement structure comprises an engagement tab extending generally circumferentially relative to the tubular body, the tubular body configured to engage a recess of the frame to mount the retention component on the frame, the tab having a first direction in which the lens is movable relative to the frame and a second direction in which the tab engages the lens to secure the lens relative to the frame.

2. The eyewear of claim 1, wherein the tab of the clip engages the lens at an angle of at least about 5 degrees and/or less than or equal to about 40 degrees relative to horizontal.

3. The eyewear of claim 2, wherein the tab of the clip engages the lens at an angle of about 19.2 degrees relative to horizontal.

4. The eyeglasses in claim 1 wherein the swivel clip is a split ring.

5. The eyewear of claim 1, wherein the swivel clip fits over the recess of the frame in a snap-fit manner.

6. The eyewear of claim 1, wherein the engagement portion of the lens comprises one of a recess and an aperture engageable by the engagement structure of the swivel clip.

7. An eyeglass as in claim 1, wherein the rotating clip is located in a middle portion of the frame, the clip being movable by the wearer to secure the middle portion of the lens to the frame.

8. An eyeglass as in claim 1, wherein the frame comprises opposing side terminals that interconnect with corresponding protrusions in a lens to mount the lens to the frame in a mounted position.

9. An eyeglass as in claim 1, wherein the frame comprises at least one stop element configured to limit a rotational direction of the retention component relative to the frame.

10. An eyeglass as in claim 9, wherein the retention component comprises at least one stop element corresponding to the at least one stop element of the frame, the stop elements being configured to contact one another to limit a rotational direction of the retention component relative to the frame.

11. An eyeglass as in claim 10, wherein the retention component comprises a first stop element and a second stop element that interact with the at least one stop element of the frame.

12. An eyewear, comprising:

at least one lens comprising a lateral first connector;

a frame comprising at least one lateral second connector, a first ear stem, and a second ear stem, the at least one lateral second connector of the frame configured to engage with the at least one lateral first connector of the at least one lens to support the at least one lens in a field of view of a wearer, the frame configured to be worn on the head of the wearer; and

at least one rotatable retention member supported by the frame, the retention member being rotatable relative to the frame and relative to the lens to engage an engagement portion of the lens to prevent the lens from disengaging from the frame due to a shock event,

wherein the frame comprises at least one stop element configured to limit a rotational direction of the retention component relative to the frame,

wherein the retention component comprises at least one stop element corresponding to the at least one stop element of the frame, the stop elements configured to contact each other to limit a rotational direction of the retention component relative to the frame,

wherein the retaining member has a generally tubular body with an engagement structure extending generally circumferentially therefrom, the at least one stop element of the retaining member being formed along an inner surface of the retaining member.

13. An eyewear, comprising:

at least one lens comprising a lateral first connector;

a frame comprising at least one lateral second connector, a first ear stem, and a second ear stem, the at least one lateral second connector of the frame configured to engage with the at least one lateral first connector of the at least one lens to support the at least one lens in a field of view of a wearer, the frame configured to be worn on the head of the wearer; and

at least one rotatable retention member supported by the frame, the retention member being rotatable relative to the frame and relative to the lens to engage an engagement portion of the lens to prevent the lens from disengaging from the frame due to a shock event,

wherein the frame comprises at least one stop element configured to limit a rotational direction of the retention component relative to the frame,

wherein the retention component comprises at least one stop element corresponding to the at least one stop element of the frame, the stop elements configured to contact each other to limit a rotational direction of the retention component relative to the frame,

wherein the at least one stop element of the retention component comprises a recess and the at least one stop element of the frame comprises a protrusion.