1, Zeiss
Carl Zeiss Jena is a German enterprise that manufactures optical systems, industrial measuring instruments and medical equipment, and is a world-class enterprise that manufactures camera lenses. The history of carl zeiss lens began at 1890.
2. Nikon
Nikon Monoscope Nikon (Japanese: ニコン, English: NikonCorporation, also translated as Yikang (Hong Kong) Co., Ltd.), namely Japan Optics, a well-known camera brand in Japan, is also one of the affiliated enterprises of Mitsubishi Group.
3. Studell
German Translite Optical Company is the world's largest manufacturer of military telescopes and one of the largest and most modern lens production equipment companies in the world.
4. Doctors can
Bushnell has been a leader in the high-performance sports optics industry for more than 50 years.
5. General regulations
Canon 1963 was established in the United States, and its polyethylene film for food packaging was once internationally renowned, mainly engaged in the research and development/production/sales of series products such as preservative film/sealed bag/aluminum foil.
The above contents refer to Baidu Encyclopedia-Zeiss.