| 摘要 |
PURPOSE:To converge an optical waveguide to a specific position accurately and vary the focal length of a lens part at a high speed by impressing a voltage to the optical guide and/or lens part, and varying the focal length of the lens part. CONSTITUTION:The lens consists of the optical waveguide 4 made of at least either material having electro-optic effect, the lens part 5 provided to part of it, and a means which varies the focal length of the lens part 5 by impressing the voltage to the optical waveguide 4 and/or lens part. Thus, the optical waveguide 4 is constituted and the electric field between electrodes 2 and 7 is controlled to converge waveguide light beams 8 and 9 to a specific position, using this as a correcting means for an error in focal length, etc., in lens manufacture. A modulated signal is impressed between the electrodes 2 and 7 to vary the focal length at a high speed according to the signal, and this is usable for, for example, the head of an optical information processor. A this film is present between the electrodes, so a large electric field is generated to obtain superior electro-optic effect. |
