Single Lens CD Player Pickup System Using a Bi-Aspheric Molded Glass Lens

Since compact disc (CD) players were first introduced in 1982, they have been prevailing at a remarkable speed. The number of shipped CD players is assumedly eight to nine millions in 1986. Following this first generation CD player of fixed installation type, portable or radio cassette CD players and CD players for car use are supposed to prevail as a second generation. For these CD players, mass production, lower cost and performance reliability in hot and humid environment are demanded.