Black and white CAD-style line drawing of a surveillance camera on a pole overlooking a car, with labels 'h', 'd', 'α', and 'β'.

Technical engineering line drawing, side view (cross-sectional/elevation view only), black and white, clean CAD-style illustration on a white background. A vertical pole of height h supports a surveillance camera mounted at its top. The camera is attached to the pole by a small bracket and is tilted downward. A passenger car is approaching the pole. The front bumper of the car is located at a horizontal distance d from the base of the pole. Draw a horizontal dimension line labeled d between the pole base and the front bumper of the car. The value of d must be large enough so that the entire front face of the vehicle is clearly visible from the camera. The car must not be positioned directly beneath the camera or immediately next to the pole. The camera lens must be clearly visible. The camera field of view originates exactly at the center of the camera lens (optical center). Draw the field of view as two dashed rays starting from the camera lens. The viewing cone must completely contain the entire front of the car, including the front bumper, grille, hood and windshield. The car must lie well inside the viewing cone, not touching its boundaries. Draw the camera optical axis as a thin solid line extending from the camera lens toward the center of the front of the vehicle. The angle between the two dashed field-of-view rays is labeled β, with its vertex at the camera lens. Draw another angle labeled α, with its vertex exactly at the camera mounting point. α is formed only by See more