Penlight

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Penlight

A penlight is a small, pen

Pen

File:03-BICcristal2008-03-26.jpgA pen is a writing instrument used to apply ink to a surface, usually paper. There are several different types, including ballpoint pen, rollerball pen, fountain pen, felt-tip....
-sized flashlight

Flashlight

A flashlight is a portable electric searchlight which emits light from a small incandescent lightbulb, or from one or more light-emitting diodes ....
, usually containing two AA batteries or AAA batteries.

A number of different designs are common. In some an incandescent light bulb has an integral lens

Lens (optics)

A lens is an optics device with perfect or approximate axial symmetry which transmittance and refraction light, converging or diverging the beam....
that focuses the light, thus no reflector

Reflector

A reflector can mean one of several things:Science* A reflector, a weapon attachment that reflects off the target to produce a reticule....
is built into the penlight. Others, such as the well known Maglite

Maglite

Maglite was introduced in 1979. It is a brand of flashlight manufactured by Mag Instrument, Inc. located in Ontario, California, and founded by Anthony Maglica....
brand use incandescent bulbs and standard reflectors, while LED bulbs are becoming increasingly common.

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