Abstract: The present invention relates to a controlled delivery system that can be incorporated in liquid, as well as, dry granular, or powder, household products, such as dishwashing detergents, surface cleaners, deodorizers, animal litters and cleaning wipes The controlled delivery system of the present invention is a solid, substantially spherical particle comprising a hydrophobic material. The particles can include cationic charge enhancing agents. The particles can also include a fragrance. The particle can have an average particle diameter of from about 1 micron to about 500 microns. The controlled delivery system of the present invention can be utilized to deliver a broad range of fragrance ingredients and prolong fragrance release over an extended period of time. The invention also pertains to household products comprising the controlled release system of the present invention.

Abstract: The present invention relates to a controlled delivery system that can be incorporated in liquid, as well as, dry granular, or powder, household products, such as dishwashing detergents, surface cleaners, deodorizers, animal litters and cleaning wipes The system also prolongs the release rate of the active agents over an extended period of time, or provides heat triggered release of the active agents and yields a high impact fragrance “burst” upon heat treatment. The controlled delivery system of the present invention is a nano-sphere, having an average sphere diameter of from about 0.01 microns to about 10 microns. The nano-sphere comprises hydrophobic materials, cationic conditioning agent or, cationic conditioning agent in conjunction with a cationic charge booster to assist in adhering the spheres onto a surface.

Abstract: The present invention provides an optical device comprising: (a) a substrate; and (b) a plurality of units on the substrate. Each of the units comprises a plurality of tapered waveguides wherein: (i) each of the waveguides has a light input surface adjacent the substrate (a) and a light output surface distal from the light input surface and the light input surface area is greater than the light output surface area; (ii) each of the waveguides tapers from its light input surface to its light output surface at an angle; and (iii) at least one of the light input surface area or the light output surface area of at least one of the tapered waveguides is different than the corresponding surface area of the remaining tapered waveguides in the unit. Preferably, the optical device is a viewing film. The present viewing film has reduced or substantially eliminated intensity hot spots and interference patterns.

Abstract: The present invention includes a polarizer element and an array of tapered waveguides in substantial contact with the polarizer element. The tapered end of each of the waveguides extends outward from the polarizer element. Each of the waveguides has a light input surface adjacent the polarizer element and a light output surface distal from the light input surface. The area of the light input surface of each of the waveguides is greater than the area of its light output surface. Also, the waveguides in the array are separated by interstitial regions with a lower refractive index than the refractive index of the waveguides. The present improved polarizer may be used in display devices, such as projection display devices, off screen display devices, and direct view displays. Such displays are used in a wide range of applications including computer terminals, airplane cockpit displays, automotive instrument panels, televisions, and other devices that provide text, graphics, or video information.