User manual BUSHNELL NIGHT VISION MONOCULAR 26-4051

[. . . ] Bushnell Night Vision products collect and amplify existing light through the objective lens, which is then focused on the image intensifier. Inside the intensifier, a photocathode is "excited" by the light and converts the photon energy into electrons. These electrons accelerate across an electrostatic field inside the intensifier and strike a phosphor screen (like a green monochrome TV screen) which emits an image that you can see. [. . . ] After the adjusting, do not rotate the eyepiece any longer irrespective of the distance and other conditions. Direct the device at the subject to be viewed and adjust the final focus by rotating the objective lens (1) until the image quality is optimal. the Green LED indicates that the unit is on (6). Always remember to turn the unit off when done. Do not store this device while the indicator is lit. This device can be mounted on any tripod with a ¼" tripod socket. Caution: This device can be used in extreme cold weather. However, when the unit is brought back into a warm environment, you must wait approximately 5 hours before using the unit again. Damage may occur due to condensation that may have accumulated on the internal circuitry of the unit. These vary from device to device and are cosmetic blemishes inside the device. These are normal for Night Vision devices and are NOT a defect. Check the battery contacts to ensure it is clean and free of corrosion. If still no improvement, clean the lenses; they may be foggy or dusty. Bright light sources such as headlights may cause visibility to degrade or disappear completely. Turn the Power OFF (2) and turn the scope away from the light source. The unit will restore itself in 1 or 2 minutes. [. . . ] This warranty does not cover damages caused by misuse, improper handling, installation, or maintenance provided by someone other than a Bushnell Authorized Service Department. Any return made under this warranty must be accompanied by the items listed below: 1) A check/money order in the amount of $10. 00 to cover the cost of postage and handling 2) Name and address for product return 3) An explanation of the defect 4) Proof of Date Purchased 5) Product should be well packed in a sturdy outside shipping carton, to prevent damage in transit, with return postage prepaid to the address listed below: For products purchased outside the United States or Canada please contact your local dealer for applicable warranty information. [. . . ]