Optical pickup device

从半导体激光器(2a、3)发出的具有不同波长的激光束(h1、h2)入射到光学路径结合棱镜(13)上，且每个激光束(h1、h2)的光学强度被设置在由其上设置半透射薄膜(HM)的光学路径结合棱镜(13)汇集的光学路径上的光电转换元件(15)探测，而每个半导体激光器(2a、3)的光反射强度的APC控制基于每个探测结果加以执行。其结果是，穿过光学路径结合棱镜(13)而被施加到信息记录介质上的激光束(h1)与被光学路径结合棱镜(13)反射以施加到信息记录介质上的激光束(h2)的光束能量被适宜地控制。 Laser beams h1, h2 with different wavelengths emitted from semiconductor lasers 2a, 3 are incident to an optical path joint prism 13 and each of optical intensities of the laser beams h1, h2 is detected by a photoelectric conversion element 15 provided in an optical path integrated by the optical path joint prism 13 on which a semi-transmission film HM is provided and APC control of each of light emission intensities of the semiconductor lasers 2a, 3 is performed on a basis of each of detection results. As a result of this, the beam intensity of the laser beam h1 passing through the optical path joint prism 13 to be applied to an information recording medium and the laser beam h2 reflecting the optical path joint prism 13 to be applied to the information recording medium are controlled properly.