摘要:
A detector having a field of view in elevation on the order of one hundred eighty degrees in one plane and three hundred sixty degrees in a perpendicular plane includes a generally hemispherical lens in combination with an optical frustum. The combination directs incident radiant energy within the field of view onto a centrally located sensor.
摘要:
A detector having a field of view in elevation on the order of one hundred eighty degrees in one plane and three hundred sixty degrees in a perpendicular plane includes a generally hemispherical lens in combination with an optical frustum. The combination directs incident radiant energy within the field of view onto a centrally located sensor.
摘要:
A detector having a field of view in elevation on the order of one hundred eighty degrees in one plane and three hundred sixty degrees in a perpendicular plane includes a generally hemispherical lens in combination with an optical frustum. The combination directs incident radiant energy within the field of view onto a centrally located sensor.
摘要:
A detector having a field of view in elevation on the order of one hundred eighty degrees in one plane and three hundred sixty degrees in a perpendicular plane includes a generally hemispherical lens in combination with an optical frustum. The combination directs incident radiant energy within the field of view onto a centrally located sensor.
摘要:
A head tracking system combines a plurality of sources of radiant energy, a plurality of sensors and at least one reflective element. As the reflective element moves, various radiant energy beams become incident thereon. The incident beams are reflected to respective sensors thereby providing head position signals.
摘要:
A compact display system simulates a panoramic view to an observer located at a central viewing station. A toric mirror, comprising a compressed portion of a sphere, has a concave reflective surface disposed in surrounding relation to the given viewing station while a spherical rear projection screen which receives projected image light on its inner surface presents a panoramic image to the toric mirror from its outer surface. A plurality of projectors are disposed tangentially above the upper periphery of the rear projection screen and project associated portions of the light image onto the inside of the screen via fold mirrors. Each projector includes a high intensity CRT and a color shutter.