Abstract: The present invention relates to an electronic airflow mask that allows a user to easily breathe through the mask, while reducing the potential of exposure to contamination from harmful airborne particles. The electronic airflow mask also minimizes the likelihood of the wearer experiencing skin damage, pressure points, pain or the like from wearing the mask for prolonged, uninterrupted periods of time. The electronic airflow mask includes a multi-speed fan powered by a power source to provide easy inhalation and exhalation of air by the user. The fan is disposed on a side of the mask, and its controls are readily accessible to the wearer.

Abstract: The present invention relates to a designer medical mask that allows a user to quickly and easily change the outer appearance or design of the medical mask with a plurality of interchangeable designs, patterns, images, text, logos, colors, etc., and without having to discard the underlying mask device. The improved medical mask also prevents or reduces the likelihood of the wearer experiencing wounds, pressure ulcers, skin damage or the like from wearing the mask for prolonged, uninterrupted periods of time. In addition to the interchangeable decorative covers, the medical mask is further comprised of a filter layer, a moisture wicking layer and a mask securing means that is more secure and easier to use than current medical mask designs, in addition to being more comfortable than both tied and loop medical mask designs.

Abstract: Light control devices implemented with diffusers exhibiting controllable diffusion characteristics provide anisotropic luminous intensity distributions and glare control at high viewing angles while maintaining high luminaire efficiency or daylight utilization.

Abstract: Light control devices (76, 80, 82) implemented with diffusers exhibiting controllable diffusion characteristics provide anisotropic luminous intensity distributions and glare control at high viewing angles while maintaining high luminaire efficiency or daylight utilization.

Abstract: Kinoform diffusers (82) exhibit controllable diffusion characteristics that include off-axis transmittance and reflectance properties, elimination of zero-order beam, and freedom from spectral dispersion under achromatic illumination. Light control devices (76, 80, 82) implemented with kinoform diffusers having controllable diffusion characteristics provide anisotropic luminous intensity distributions and glare control at high viewing angles while maintaining high luminaire efficiency or daylight utilization.

Abstract: Light control devices (76, 80, 82) implemented with diffusers exhibiting controllable diffusion characteristics provide anisotropic luminous intensity distributions and glare control at high viewing angles while maintaining high luminaire efficiency or daylight utilization.

Abstract: Kinoform diffusers (82) exhibit controllable diffusion characteristics that include off-axis transmittance and reflectance properties, elimination of zero-order beam, and freedom from spectral dispersion under achromatic illumination. Light control devices (76, 80, 82) implemented with kinoform diffusers having controllable diffusion characteristics provide anisotropic luminous intensity distributions and glare control at high viewing angles while maintaining high luminaire efficiency or daylight utilization.