The boresight collimator (Figure 1-10) uses electronic, optical, and
mechanical components to produce two parallel beams of energy which
are used to aline the night sight to the optical sight.
two energy sources generated: visible energy and infrared (IR)
energy. Visible energy is produced by an incandescent visible source
lamp directly into visible energy that can be seen by the human eye.
IR energy is obtained when power is applied through lamp and heater
control circuit card (3A1) to the IR source heater on the back of the
This causes the reticle to emit IR energy that can be
detected by a night sight, but is not visible to the human eye.