초록 ▼

The disclosed device provides illumination for a radiation dosimeter or other tubular instrument which is held directly in front of the eye for viewing. It can also be used as a compact flashlight for inconspicuous use such as for reading a map in a car or a program in a theater, and it can be carri

The disclosed device provides illumination for a radiation dosimeter or other tubular instrument which is held directly in front of the eye for viewing. It can also be used as a compact flashlight for inconspicuous use such as for reading a map in a car or a program in a theater, and it can be carried by medical personnel to illuminate the eye of a patient. The illuminator comprises a light-emitting diode (LED) protruding through an annular spacer. The leads from the LED are bent around a battery comprising one or more button cells. The inner assembly comprising the LED, spacer and battery is held together by a plastic sleeve of shrink-wrap material, such as polyolefin. The inner assembly is enclosed in a thimble-shaped flexible plastic casing, which is adapted to slide onto the end of a dosimeter for permanent mounting. When the user squeezes the casing, the leads are brought into contact with the batteries, thereby completing the circuit, lighting the LED, and illuminating the dosimeter. The illuminator is fabricated by assembling the parts within a heat-shrinkable plastic sleeve, heating the sleeve to shrink it around the parts to secure them together, and then inserting the shrink-wrapped assembly within the casing.

대표청구항 ▼

A battery-operated illuminator comprising: (a) a battery having a first terminal on one side and a second terminal on a side opposite to the first, (b) a light-emitting element from which a first wire lead and a second wire lead extend, the first lead extending to a position adjacent said first term

A battery-operated illuminator comprising: (a) a battery having a first terminal on one side and a second terminal on a side opposite to the first, (b) a light-emitting element from which a first wire lead and a second wire lead extend, the first lead extending to a position adjacent said first terminal and the second lead extending to a position adjacent said second terminal, at least one of said leads being normally out of electrical contact with the adjacent terminal in the absence of external pressure, (c) an annular spacer having a first side and an opposite side, said spacer being disposed around said light-emitting element such that said light-emitting element extends through the first side of said spacer and said leads extend from the opposite side of said spacer, (d) a sleeve of plastic film substantially enclosing the following elements: said battery, light-emitting element, leads and annular spacer, said film having a shape and strength sufficient to retain the relative configuration of said elements substantially enclosed therein, and (e) a resilient flexible casing substantially housing the sleeve and said elements substantially enclosed therein, an end of said casing forming a generally cylindrical aperture adapted for mating with an optical device to be illuminated and through which said light-emitting element and annular spacer are visible, said leads and battery being disposed such that when pressure is applied to the casing in a direction perpendicular to the axis of said aperture, said leads make electrical contact with their respective said terminals, whereby an electrical circuit is completed and the illuminator is activated.