Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With antiglare or shading
Reexamination Certificate
2002-08-09
2003-10-28
Dang, Hung Xuan (Department: 2873)
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
With antiglare or shading
C359S015000
Reexamination Certificate
active
06637877
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to protective eyewear and more particularly to a multiple threat eye protection system, which includes an easily removable lens that is transferable between multiple lens-retaining platforms.
2. Description of the Related Art
Eye protection systems have a plurality of applications. Eye protection systems may be employed as sports equipment, e.g., ski goggles, as protection for work activities, as protection for military applications or many other applications. Typical eye protection systems include a zero-power plano lens, which is employed for wind, dust and debris protection, whereas military eye protection systems typically require additional protection from threats such as high speed ballistics and ultra-violet light. While these lenses may be removed, they often require tools and the disassembly of multiple parts to do so. It would be advantageous to provide a lens, which is easily removable without the use of tools from one or more retaining platforms, such as a goggle or spectacle.
Eye protection can be provided on a plurality of different platforms. For example, goggles protect against dust and wind while spectacles are preferred for sunlight protection. Each of these platforms is constrained by different requirements and different physical attributes. For example, goggles tend to sit further from the face of a user than spectacles. Additional differences between these platforms include the pantoscopic tilt angle of the lens relative to the face of the user and the overall size of the lens to provide proper coverage of the user's eyes.
The production of military eyewear tends to be material and time intensive. In particular, lens designs which include protection from multiple threats typically undergo many processing steps, which affect their yield and therefore cost. It would be advantageous to provide a lens system, which is interchangeable between different lens retaining platforms, which addresses the difficulties in employing the same lens for multiple platforms. Such a lens system would reduce cost by permitting a single lens to be employed on several platforms.
Lenses for military applications typically include coatings or layers formed thereon. Despite providing ballistic protection, these lenses cannot in many cases provide adequate scratch resistance, and light protection layers are vulnerable to scratches and, if scratched, may compromise their light protection effectiveness. For example, where laser or other light protection is provided, scratches in the protective coating could render the lens useless for light protection applications. The lens must therefore be replaced. It would be advantageous to improve scratch resistance of the lenses, which are designed to protect against light threats, e.g., laser light.
Therefore a need exists for lens retaining platforms, which provide an easy and quick release mechanism for removing a lens and accommodate lenses of different thicknesses and which can be interchanged between the platforms. A further need exists for a lens system, which protects against multiple threats and provides a structure, which protects optical technologies from scratch or other damage.
SUMMARY OF THE INVENTION
The present invention provides eye protection systems. The eye protection systems include a lens capable of being mounted in and being interchangeable between a plurality of different lens-mounting platforms. These platforms may include spectacles or goggles with release mechanisms, which permit the lens to be removed while providing full ballistic protection when installed in the platform. The lens of the present invention protects against a plurality of threats including spectrums of light, such as sun light, ultraviolet light, or laser light, wind, dust, projectiles, etc. The lens may include a laminate structure, which protects sensitive technologies from exposure to environmental conditions, such as chemicals, weather, etc.
The present invention includes an eye protection system having a lens for protecting both eyes of a user. The lens is interchangeable between multiple platforms. The platforms include at least one of a goggles assembly and a spectacles assembly, which detachably receive the lens and hold the lens in a position on a face of the user by securing the lens about its periphery.
In another embodiment, an eye protection system includes a frame having a recess formed therein, and an elastomeric subframe attached to the frame and lining surfaces of the recess. The recess is configured to receive a lens such that the lens, when installed, remains in contact with the subframe. Tabs are disposed at a periphery of the recess on a first side of the frame to provide a gap between the subframe and the tab, which permit the lens to fit in the gap. A release mechanism is disposed at a periphery of the recess on a second side opposite the first side of the frame. The release mechanism secures the lens when placed in a first position.
In another embodiment, the eye protection system includes a unitary lens having two lobes and a centrally disposed arch adapted for a nose of a user. A brow bar has opposing extensions extending therefrom, the extensions capture a portion of the lens, which opposes the brow bar. A support portion is included for capturing the lens, and the support portion is detachably connected to the arch of the lens and extends over the brow bar to secure the lens to the brow bar. Arms are pivotally connected to the brow bar for securing the lens on a user.
The present invention includes a lens system for protection against light and ballistics, which includes a first lens having a convex surface. A hologram is adhered to the convex surface. A second lens includes a concave surface. A dielectric stack is formed on the concave surface. An index-matching adhesive is provided for connecting the convex surface with the hologram to the concave surface with the dielectric stack.
Other lens-retaining platforms and lens structures are contemplated by the present invention. The illustrative embodiments of the present invention should not be construed as limiting the present invention as presented in the appended claims.
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