Filter
Top Products
CHAPTER 3
THROUGH-THE-LENS (TTL) INTRA-OPTICAL LIGHT
SIGHTING (Patent No. 4,494,881)
3.1 TTL SIGHTING
ith the Everest Through-The-Lens (TTL) Intra-Optical Light Sighting System
(Patent No. 4,494,881), an illuminated image of the infrared detector is
projected directly through the infrared optics of the infrared temperature
sensor, illuminating the exact area where a temperature measurement is being
taken. Because this light shares the internal optical path, it can never be knocked
out of alignment. It will always illuminate the area where the infrared/visible
optics are focused.
W
3.2 FOCUSING WITH THE VARIO-ZOOOM
n order to focus on a smaller or larger area, the front of the Vario-Zooom (Patent
Pending) infrared thermometer need only be pushed in or out until the target is
completely illuminated. Simply point the instrument at a target in subdued ambient
light and push the front optics in or pull it out in order to focus the infrared
thermometer to display the field-of-view (FOV) of the instrument.
I
A picture of the Front Optics of the AGR-THERM II Infrared Thermometer with the
antenna extended for Dry Bulb Ambient Air Temperatures is shown below:
8