description: 　　
This product is characterized with infinite optical system. Designed with advanced modular technology, the product adopts gemel ro-tary binocular observing drawtube, quadruple (or quintuplicate) home tumbling converter, push-in illuminator support, critical or Kohler illumination system. The DC voltage regulated power source assures high efficiency light source and reliable bi-direc-tional electromagnetism security.
　　This product can be equipped with many accessories to imple-ment such functions as bright field, dark field, phase contrast,photography, fluorescence, biological polarization and television etc.