http://www.outdoorlanternsonsale.com/head-flashlight/
What is the purpose of a red lens and blue lens on a flashlight?
i just bought a flashlight and with it came a red lens cap and a blue lens cap. Those caps can be fitted to the head of the flashlight to emit either a red or blue beam of light. I would like to know there utility. I know that i have seen flashlight fitted with red lens in war movies but for they utility i have no idea! Please help.
Red Light is used for prevserving night vision so your eyes won't have to readjust.
A Blue Light makes it easier to spot fluids in tanks such as in a Windshield Wiper Fluid Reservoir.
A Green Light helps with map reading better.
Also a clear lens with indentations and flutes in it is used for spreading the light outwards and dimming it somewhat. On some flash lights including military flash lights these lens can be combined for suitable situations.
 |
 2 X 7 LED ADJUSTABLE HEAD LAMP WITH 3 ILLUMINATION HL1 $4.90 Time Remaining: 44m Buy It Now for only: $4.90 |
 21 LED 4 Mode Headlamp Flashlight Head Torch Headlight $1.56 Time Remaining: 2h 39m |
 HeadLamp 40 Led Head Torch Flashlight Headlight $0.01 Time Remaining: 3h 3m |
 5W CREE LED HEADLAMP FLASHLIGHT Head Lamp Light Black $9.99 Time Remaining: 3h 57m Buy It Now for only: $9.99 |
 LED Head Lamp Bright Flashlight Batteries Convenient Useful $14.66 Time Remaining: 4h 25m Buy It Now for only: $14.66 |
 76 LED WATERPROOF HEADLAMP FLASHLIGHT LAMP HEAD LIGHT $12.99 Time Remaining: 4h 52m Buy It Now for only: $12.99 |
 ZOOMABLE ZOOM FOCUS CREE LED HEAD LAMP LIGHT TORCH Flashlight 5W 300Lm Green New $9.89 Time Remaining: 4h 57m Buy It Now for only: $9.89 |
 ZOOMABLE ZOOM FOCUS CREE LED HEAD LAMP LIGHT TORCH Flashlight 5W 300Lm Green New $9.99 Time Remaining: 5h Buy It Now for only: $9.99 |
 High power zoomable Cree Q5 headlamp head lamp headlight H3 flashlight $7.07 (3 Bids) Time Remaining: 5h 1m |
 New Tag Unopened 3 Pack LED Flashlight Head Lamp Combo $7.50 Time Remaining: 6h 8m Buy It Now for only: $12.00 |
 33 LED 4 Mode Headlight Headlamp Flashlight Head Torch $1.56 Time Remaining: 6h 55m |
 Humvee GI Xenon Angle Head Tan Flashlight $65.99 Time Remaining: 7h 18m Buy It Now for only: $65.99 |
 3W LED Flashlight Head Torch HeadLight Mini Headlamp Bl $0.01 Time Remaining: 7h 40m |
 600LM 5W CREE Q5 LED 3 Modes Headlamp Flashlight Head Torch + 18650 Battery $15.36 Time Remaining: 7h 42m Buy It Now for only: $15.36 |
 HeadLamp 56 Led Head Torch Flashlight Headlight $0.01 Time Remaining: 7h 55m |
 21 LED 4 Mode Headlamp Flashlight Head Torch Headlight $1.56 Time Remaining: 8h 6m |
 Q4 CREE LED Flashlight Head Lamp Light Headlamp 300 Lm $3.80 Time Remaining: 8h 18m Buy It Now for only: $3.80 |
 CREE Q4 LED Flashlight Headlamp Head Light 300 Lumens $7.79 Time Remaining: 8h 18m Buy It Now for only: $7.79 |
 CREE LED Flashlight Headlamp Head Light Lamp 160 Lumens 3 Modes $1.00 Time Remaining: 8h 35m Buy It Now for only: $1.00 |
 Camping Outdoor 7 LED Flashlight Headlamp Head Light Lamp Torch $1.00 Time Remaining: 8h 36m Buy It Now for only: $1.00 |
 Zoomable CREE Q4 LED Flashlight Head Lamp Light Torch $9.79 Time Remaining: 8h 40m Buy It Now for only: $9.79 |
 CREE LED Flashlight Headlamp Head Light Lamp 500 Lumens $2.79 Time Remaining: 8h 52m Buy It Now for only: $2.79 |
 600LM CREE XP G R5 LED Zoom Zoomable Head Light Torch Headlamp Headlight $60.06 Time Remaining: 8h 56m Buy It Now for only: $60.06 |
 5W CREE LED Flashlight Head Lamp Light Headlamp 500 Lm $2.79 Time Remaining: 9h 6m Buy It Now for only: $2.79 |
 5W CREE LED Flashlight Head Lamp Light Headlamp 500 Lm $3.49 Time Remaining: 9h 18m Buy It Now for only: $3.49 |
 CREE LED Flashlight Headlamp Head Light Lamp 160 Lumens 3 Modes $4.19 Time Remaining: 9h 25m Buy It Now for only: $4.19 |
 Zoom Zoomable CREE Q5 LED Headlight Flashlight Head Lamp 5W 300Lm $7.69 Time Remaining: 9h 26m Buy It Now for only: $7.69 |
 Aluminum 3W CREE LED Zoom Flashlight Head Lamp Light Headlamp 160Lm $4.19 Time Remaining: 9h 26m Buy It Now for only: $4.19 |
 BRIGHT 18 LED HEADLAMP FLASHLIGHT LAMP HEAD LIGHT TORCH $5.99 Time Remaining: 9h 29m Buy It Now for only: $5.99 |
 NEW 76 LED HEADLAMP FLASHLIGHT LAMP HEAD LIGHT TORCH $12.99 Time Remaining: 9h 30m Buy It Now for only: $12.99 |
 5 9 LED Camping Head Lamp Light Flashlight Hands free Bright Lite Outdoor Auto $39.39 Time Remaining: 9h 32m |
 NEW MILITARY TACTICAL ARMY GREEN ANGLE HEAD FLASHLIGHT $4.54 Time Remaining: 9h 54m |
 Camping 56 LED Flashlight Head Lamp Light Torch Headlamp Headlight $8.89 Time Remaining: 10h 7m Buy It Now for only: $8.89 |
 Ultrafire C1 Tactical Head CREE R2 290 Lumens 3 Modes LED Flashlight Torch New $28.98 Time Remaining: 10h 14m Buy It Now for only: $28.98 |
 270LM LED Cycling Headlight Flashlight Bike Bicycle Torch Head Lamp Front Light $0.01 Time Remaining: 10h 26m |
 9 LED Camping Head Lamp Light Flashlight Waterproof New Outdoor DIY Tool Auto $10.39 Time Remaining: 10h 39m |
 Zoom Zoomable CREE LED Headlight Flashlight Head Lamp 3W 160Lm $1.00 Time Remaining: 11h Buy It Now for only: $1.00 |
 Defender Stainless Steel Head CREE XM L T6 LED 750 Lumens 5 mode Flashlight New $45.98 Time Remaining: 11h 22m Buy It Now for only: $45.98 |
 5W CREE LED HEADLAMP FLASHLIGHT Head Lamp Light Black $0.85 Time Remaining: 11h 32m |
 New Brand 3W Watt LED + Red LED Head Torch Headlamp HeadLight Flashlight gnu T1D $0.85 Time Remaining: 12h 27m |
 56 LED FLASHLIGHT HEADLAMP 4 MODE HIKING HEAD TORCH LIGHT LAMP eXe JN6 $0.99 Time Remaining: 12h 57m |
 Coast CREE LED LENSER Outdoor Head lamp H7 7497 Torch FLASHLIGHT HEADLIGHT 170LM $29.99 Time Remaining: 13h 14m |
 New Brand 3W Watt LED + Red LED Head Torch Headlamp HeadLight Flashlight nmc T1D $0.85 Time Remaining: 13h 39m |
 Aluminum 3W CREE LED Zoom Flashlight Head Lamp Light Headlamp 160Lm $1.00 Time Remaining: 13h 49m Buy It Now for only: $1.00 |
 Aluminum 3W CREE LED Zoom Flashlight Head Lamp Light Headlamp 160Lm $1.00 Time Remaining: 13h 54m Buy It Now for only: $1.00 |
 33 LED 4 Mode Headlamp Flashlight Head Torch Headlight $1.56 Time Remaining: 14h |
 A 5W CREE LED Zoom HEADLAMP FLASHLIGHT Head Lamp Light $0.81 Time Remaining: 14h |
 5 Watt W LED Headlamp 270 Lumen Flashlight HEAD Torch $0.99 Time Remaining: 14h 37m |
 300LM CREE LED Q5 Headlight Flashlight Torch Head Lamp + Bike Bicycle Rear Light $11.99 Time Remaining: 14h 41m Buy It Now for only: $11.99 |
 5 LED Flashlight Headlamp Head Lamp Camping Torch Light New $2.55 Time Remaining: 15h 54m Buy It Now for only: $2.55 |
 5 LED Bicycle Bike Head Lamp Rear Tail Flash Light Set $1.00 Time Remaining: 15h 58m Buy It Now for only: $1.00 |
 New Brand 3W Watt LED + Red LED Head Torch Headlamp HeadLight Flashlight bko T1D $0.85 Time Remaining: 16h 13m |
 UltraFire 1300 Lumens C8 LED Torch Flashlight Steel Head + 2x18650 + Charger $18.99 Time Remaining: 16h 23m |
 NEW 18 LED HEADLAMP FLASHLIGHT LAMP HEAD LIGHT TORCH $5.99 Time Remaining: 16h 30m Buy It Now for only: $5.99 |
 BRIGHT 76 LED HEADLAMP FLASHLIGHT LAMP HEAD LIGHT TORCH $12.99 Time Remaining: 16h 30m Buy It Now for only: $12.99 |
 Used Surefire 6P Z44 glossy black bezel head for 6P 9P C2 C3 Z2 G2 G3 $10.00 Time Remaining: 16h 32m Buy It Now for only: $25.00 |
 27 LED Flash Light Head Ligh Headlamp $6.32 Time Remaining: 17h 3m Buy It Now for only: $6.32 |
 New Brand 3W Watt LED + Red LED Head Torch Headlamp HeadLight Flashlight ulw T1D $0.85 Time Remaining: 17h 8m |
 400LM CREE LED Q5 Headlight Flashlight Torch Head Lamp + Bike Bicycle Rear Light $11.79 Time Remaining: 17h 12m Buy It Now for only: $11.79 |
 New Brand 3W Watt LED + Red LED Head Torch Headlamp HeadLight Flashlight gyr T1D $0.85 Time Remaining: 17h 18m |
 400LM CREE LED Q5 Headlight Flashlight Torch Head Lamp + Bike Bicycle Rear Light $5.79 Time Remaining: 17h 31m Buy It Now for only: $5.79 |
 400LM CREE LED Q5 Headlight Flashlight Torch Head Lamp + Bike Bicycle Rear Light $13.69 Time Remaining: 17h 43m Buy It Now for only: $13.69 |
 18650 HEAD LAMP LIGHT CREE LED FLASHLIGHT FOR HIKING $10.47 Time Remaining: 17h 44m Buy It Now for only: $10.47 |
 New GI Army Style D Cell Angle Head Flashlight OD $9.95 Time Remaining: 17h 47m Buy It Now for only: $9.95 |
 300LM CREE LED Q5 Headlight Flashlight Torch Head Lamp + Bike Bicycle Rear Light $9.99 Time Remaining: 17h 48m Buy It Now for only: $9.99 |
 New Mini GI Army Style Angle Head Flashlight OD $4.99 Time Remaining: 17h 52m Buy It Now for only: $4.99 |
 Coast CREE LED LENSER Outdoor Head lamp H7 7497 Torch FLASHLIGHT HEADLIGHT 170LM $29.99 Time Remaining: 18h 4m |
 Zoomable CREE Q4 LED Flashlight Head Lamp Light Torch $7.79 Time Remaining: 18h 13m Buy It Now for only: $7.79 |
 2 X 7 LED ADJUSTABLE HEAD LAMP WITH 3 ILLUMINATION HL1 $0.01 (1 Bid) Time Remaining: 18h 27m |
 Battery Power 56 White LED Head Flashlight Headlamp + Head Strap $14.60 Time Remaining: 18h 47m Buy It Now for only: $14.60 |
 Adjustable Zoom Focusing Head Water Resistant 1600LM CREE Led Flashlight Torch $20.99 Time Remaining: 18h 53m |
 SAiK SA 9 300LM CREE XPE Q5 Led Flashlight Torch Dimmer Head Zoom Focus Light $8.95 Time Remaining: 19h 23m |
 Ultra Bright 400LM Cree Q5 LED Headlamp 4 MODE Headlight Bicycle Bike Torch Head $9.66 Time Remaining: 19h 42m |
 New Brand 3W Watt LED + Red LED Head Torch Headlamp HeadLight Flashlight dlg T1D $0.85 Time Remaining: 20h 6m |
 STREAMLIGHT ULTRA HEAD UPGRADE KIT FITS SUPERSTINGER 78003 $36.60 Time Remaining: 20h 16m Buy It Now for only: $36.60 |
 Justrite Electric HANDS FREE Head Lantern used model 19040 $24.95 Time Remaining: 20h 17m |