Flashlight Detail Description Tips

March 30, 2010 - PRLog -- Battery Spring: The battery spring is made of steel wire to specifications described by major engineering standards http://www.global-e-world.com/Mini-Flashlight/ corporation and within safety safety standards set OSHA. The wire is 2 mm thick, or approximately the size used in making wire coat hangers.  The battery spring keeps tension against the batteries, assembly switch, and lamp, so they all maintain contact with each other.

            Switch-Assembly: The switch assembly is manufactured from a black plastic based material, similar to that of Kevlar.  Kevlar as you may know is the material military helmets are made of.  The internal operation of the switch is mechanical as opposed to computerized, making the part stand up to stress significantly better than computer tested switches.

           Lamp: The lamp is made of high grade low cost halogen light bulbs.  At the base of each lamp is a cylindrical metal ring made of aluminum, making them cheap to produce.  Attached to the top of the cylindrical metal ring is a glass bulb, and contained in each bulb is a trace amount of halogen gas.  Halogen gas is an inert gas meaning it has no combustive or corrosive properties.  Each light bulb produces about 11000 candle power, when the flashlight is equipped with 2 D-cell batteries.

           Reflector:  The reflector is a cone shaped plastic polymer, which sits inside the head of the flashlight, and has a small hole in its center for the lamp to protrude through.  The reflector sits neatly within the head of the flashlight.  The purpose of the reflector is to funnel light from the lamp through http://www.global-e-world.com/Mini-Flashlight/Rechargeabl...  the lens and out onto the subject.

   The external parts (end cap, barrel, head, lens, and face cap)

           Tail Cap: The end cap is at the handle end of the flashlight.  It is typically made of the same material as the barrel and head of the flashlight, which may be plastic, or metal.  It houses the battery spring, and in some models of flashlight, additional lamps, batteries, or lenses.

           Barrel: The barrel is the cylindrical metal or plastic tube that houses the batteries and gives the flashlight it's shape.  Attached to its bottom is the end cap and at its top end the head and lens assembly.

           Head: The head of the flashlight is cylinder shaped and is sometimes tapered toward the bottom, as it butts up to the barrel.  It houses the reflector.  It is usually made of the same material as the end cap, barrel, and face cap.  Sometimes the head is knurled, or has a rubber protective sleeve surrounding it.  This aids in focusing the light beam.

           Lens: The lens is a thin piece of plastic, not usually greater that the thickness of a quarter.  The typical flashlight lens is flat, but sometimes they are made with reflective ridges on the bottom side to aid in http://www.global-e-world.com/Mini-Flashlight/Battery-Fla... focusing the light.  In addition to focusing light, the lens acts as a protective cover for the lamp and helps keep debris out.  The lenses are interchangeable.