He then made a more sophisticated multiplane camera which he patented as his own studio's invention.
沃尔特·迪士尼对这一创新的新技术进行了仔细研究.
英语百科
Multiplane camera
The multiplane camera is a special motion picture camera used in the traditional animation process that moves a number of pieces of artwork past the camera at various speeds and at various distances from one another. This creates a three-dimensional effect, although it is not actually stereoscopic.