论文部分内容阅读
在摄影镜头中有一类镜头被称为折反镜头(或反射式镜头)。这是一种利用光线的反射原理设计制造的镜头,通常用来制造500mm以上超远焦距的镜头。对于一般摄影镜头而言,如果焦距超过500mm后,体积和重量都会迅速增加。而折反镜头则不同,其设计利用的是光线折反的原理,让光线经过几次反射后,最后聚焦到相机进行拍摄,这样不仅大大降低了镜头的长度,而且减低了重量
One type of lens in a photographic lens is known as a flipping lens (or a reflective lens). This is a lens that is designed and manufactured using the principle of reflection of light and is usually used to make telephoto lenses with a focal length of 500 mm or more. For the general photography lens, if the focal length exceeds 500mm, the volume and weight will increase rapidly. The folding lens is different, the design is the use of light folding principle, so that after several light reflections, the final focus to the camera for shooting, this will not only greatly reduce the length of the lens, and reduce the weight