Abstract: An eyewear retainer for glasses, in which braided tubular sleeves with bonded terminal ends hold onto the temple piece of the glasses. The eyewear retainer consists of two braided tubular sleeves, with at least one of the terminal ends of each sleeve ending in a plurality of terminal ends of the braided strings or ribbons. The two braided tubular sleeves may be connected via a continuous braid or used with another intermediary component. The length of the device is selected for comfortable use and may be adjusted during use. In a preferred embodiment, the bonding of the terminal ends is accomplished, via a silicone-based epoxy to provide a flexible and tacky bond, which allows a more secure hold.

Abstract: This invention comprises a method of visually comparing the chromatic aberration in two or more optical devices. The test reveals differences in the ability of an optical product to minimize chromatic aberration, so that ideally, various colors (corresponding to specific wavelengths) will have a sharp focus at almost the same distance away from the last optical element. The method provides a consistent way to test the chromatic aberration in various optical products that is more visually observable than the process of noting the halo of colors that appears along the edge of a dark object on a light background. The test is especially geared toward comparing binoculars with different optical material composition such as ED glass (Extra-low Dispersion) or FL (Fluorite) glass to those with conventional types of glass.

Abstract: A hand held cleaning apparatus with a retractable, self-replenishing cleaning assembly used to remove fingerprints and dirt from display screens. A dry compound is used to clean screens ranging from personal cell phone screens to larger monitor-sized display screens. In a simple one-handed motion, the cleaning assembly is extended to be used, and then retracted for storage.

Abstract: An eyewear retainer for glasses, in which braided tubular sleeves with bonded terminal ends hold onto the temple piece of the glasses. The eyewear retainer consists of two braided tubular sleeves, with at least one of the terminal ends of each sleeve ending in a plurality of terminal ends of the braided strings or ribbons. The two braided tubular sleeves may be connected via a continuous braid or used with another intermediary component. The length of the device is selected for comfortable use and may be adjusted during use. In a preferred embodiment, the bonding of the terminal ends is accomplished, via a silicone-based epoxy to provide a flexible and tacky bond, which allows a more secure hold.

Abstract: This invention comprises a method of visually comparing the chromatic aberration in two or more optical devices. The test reveals differences in the ability of an optical product to minimize chromatic aberration, so that ideally, various colors (corresponding to specific wavelengths) will have a sharp focus at almost the same distance away from the last optical element. The method provides a consistent way to test the chromatic aberration in various optical products that is more visually observable than the process of noting the halo of colors that appears along the edge of a dark object on a light background. The test is especially geared toward comparing binoculars with different optical material composition such as ED glass (Extra-low Dispersion) or FL (Fluorite) glass to those with conventional types of glass.