Described herein is method of co-molding an optical lens includes injection-molding a first layer, injection-molding a second layer against at least a portion of the molded first layer to form a co-molded blank, and forming the optical lens from the co-molded blank. Co-molding apparatuses for implementing this and other co-molding methods are also described.
Described herein is method of co-molding an optical lens includes injection-molding a first layer, injection-molding a second layer against at least a portion of the molded first layer to form a co-molded blank, and forming the optical lens from the co-molded blank. Co-molding apparatuses for implementing this and other co-molding methods are also described.
Described herein is method of co-molding an optical lens includes injection-molding a first layer, injection-molding a second layer against at least a portion of the molded first layer to form a co-molded blank, and forming the optical lens from the co-molded blank. Co-molding apparatuses for implementing this and other co-molding methods are also described.
A reconfigurable power circuit (400) includes a single one-way DC to DC power converter (220, 221). The reconfigurable power circuit is configurable by a digital data processor as one of three different power channels (230, 232, and 234). Power channel (230) provides output power conversion. Power channel (232) provides input power conversion. Power channel (234) provides bi-directional power exchange without power conversion.
A visor assembly for a helmet including two adjustment mechanisms each including a base portion connectable to a side portion of the helmet and a cover portion. The base portion has an adjustment aperture and at least one support member. The cover portion of each adjustment mechanism is manually displaceable between a secured position engaged with the base portion and an exposed position. The cover portion allows access to the adjustment aperture(s) in the exposed position. The support member(s) of each adjustment mechanism are removably engaged to the respective side end portion of the visor. In the secured position, the cover portion prevents disengagement of the support member(s) from the visor. A method of adjusting the position of the visor is also disclosed.
The embodiments described herein generally relate to compositions and articles including dye compounds having desirable optical properties, and related methods. In some cases, the compositions and articles may possess advantageous optical properties, including various degrees of absorbance, emission, and/or transmission at particular wavelengths or ranges of wavelength. Embodiments described herein may be useful as optical filters in protective eyewear applications.
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
The embodiments described herein generally relate to compositions and articles including dye compounds having desirable optical properties, and related methods. In some cases, the compositions and articles may possess advantageous optical properties, including various degrees of absorbance, emission, and/or transmission at particular wavelengths or ranges of wavelength. Embodiments described herein may be useful as optical filters in protective eyewear applications.
G03B 11/00 - Filters or other obturators specially adapted for photographic purposes
C07D 295/00 - Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
A helmet retention system having a first side strap system configured to connect to a first side of a helmet and a second side strap system configured to connect to an opposite second side of a helmet is provided. A chin cup and a chin cup connecting mechanism are provided. The chin cup connecting mechanism is configured to connect the first and second side strap systems in an area about the user's chin and to vary the amount of tension in the system between at least two predefined tension states. Strap adjusters provide a cam design for tensioning the straps and retaining the adjustors fixed to the straps at the desired adjustment under external force applied to the straps. Anchors provide secure mounting of the straps to the helmet.
A headpiece assembly for use with a night vision mounting arm includes a bump shell and an interior suspension assembly for seating on the head of a human. A mounting bracket is secured to the front of the bump shell for removably attaching the night vision mounting arm to the bump shell. A ballistic shell has a bottom forming an opening and a coupling mechanism for removably securing the ballistic shell to the bump shell when the ballistic shell is placed over the bump shell. The ballistic shell has a front and a notch extending upwardly from the opening into the front for receiving the mounting bracket when the ballistic shell is placed over the bump shell so as to permit the night vision mounting arm to be attached to the bump shell during use of the ballistic shell.
A visor for a helmet includes a lens having a top edge that slopes downward from a top center point to first right and left curve points, at the first curve points the top edge begins to slope more aggressively toward second right and left curve points, and more aggressively toward right and left side edge points. A plane of sight along the vertical extent of the lens is displaced above the plane intersecting the side edge points. The lens has a thickness defined between an inner concave surface and an outer convex surface; the inner and outer surfaces having different radii of curvatures. The lens tapers from the center toward the outer edges.
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