A lined phosphorescent backing sheet for use in underlying relation with writing paper or drawing sheets permitting a writer to write in orderly form in the dark without need for external light.

A dark pulse is manifested when the intensity of a laser beam, for example, a continuous wave laser beam drops to zero and returns to its original intensity in a very short time period. A modulator for producing dark pulse outputs is disclosed which includes a two-photon absorption cell provided with two input laser beams: a continuous wave beam having a frequency .omega..sub.1 and a mode-locked laser beam having a frequency .omega..sub.2 selected such that .omega..sub.1 + .omega..sub.2 = .OMEGA...

Automotive lamps are configured having at least one array of light emitting diodes (LEDs) supported within the lamps. A bezel is positioned in each lamp adjacent to the LEDs, the bezel having a dark surface, the dark surface having a high gloss finish with reflector shaped surfaces to reflect light from the LEDs while absorbing visible light from external sources. A lens of light transmitting material covers the array of LEDs. The automotive lamp is especially useful as a rear combination lamp h...

A photodiode is provided. The photodiode includes an insulative region (IR) that permits passage of light therethrough. The photodiode also includes a substrate region of a first conductivity type and a well region of a second conductivity type. The well is formed within the substrate, beneath the IR. The well is demarcated from the substrate by a first surface. The photodiode further includes a heavily doped region (HDR) of the second conductivity type. The HDR is formed within the IR at a firs...

A bottle for protecting its contents from degradation due to light has an integrally molded wall with three layers of the same synthetic resin. Each of the layers includes a colorant, the colorant of the intermediate layer providing a generally black opaque coloration and the colorant of the inner and outer layers providing a generally white opaque coloration to mask the black coloration of the intermediate layer.

Hearing protective devices having glow-in-the-dark properties are presented in the present invention. In an exemplary embodiment, the hearing protective device comprises a semi-aural device, an earplug, or an earmuff device. In all embodiments, a glow-in-the-dark material is incorporated into at least a part of the hearing protective device so that the glow-in-the-dark material continues to emit light for an extended period of time in a dark environment after the material has been excited by irr...

A medium having a phosphorescent material, and a system and method for producing images on the medium using a digital printer. The medium comprises a phosphorescent layer having a phosphorescent material and an image receiving layer disposed over the phosphorescent layer. The image receiving layer is substantially translucent and capable of retaining an image from a digital printer. The medium may comprise a thin plastic film having a resin coating on at least on surface of the film that has bee...

Soda lime glass includes glass forming constituents for soda lime glass; and coloring agents including iron, cobalt, selenium and chromium express in the form indicated and in an amount as percent by weight of the soda lime glass as follows: from 1.05 to 1.80% of Fe.sub.2 O.sub.3, from 0.0040 to 0.0180% of Co, from 0.0003 to 0.0040% of Se, and from 0.0010 to 0.0100% of Cr.sub.2 O.sub.3. The soda lime glass has a dark grey color, a total energy transmission measured for a glass thickness of 4mm (...

A system and a method for launching glow-in-the-dark projectiles from a projectile launcher wherein the toy comprises projectiles exposed to light prior to being launched and a firing mechanism wherein a portion of the firing mechanism is positioned with the projectile prior to being fired from the launcher. In one embodiment, the firing mechanism comprises a light for exposing the projectile to radiation prior to being fired from the gun. The present invention is well suited for use as a toy pr...

A glow-in-the-dark bowling game includes an enclosure with ambient lighting normally illuminating the same, and at least one bowling lane. A UV sensitive dye or pigment is incorporated into at least a portion of the upper surface of the bowling lane. A UV light source is positioned generally above the bowling lane, and is selectively operable for directing UV light onto the upper surface of the bowling lane. To play the glow-in-the-dark bowling game, the ambient lighting is dimmed or turned off,...