1. Bosch - Headquartered in Germany, Bosch is a leading global supplier of automotive components and optical products including body vibration control, braking systems, lighting, sensors and driver assistance systems.
2. Carl Zeiss - Headquartered in Germany, Carl Zeiss is a manufacturer of high-quality optical and optoelectronic products, including lenses for eyeglasses, photographic and micro-imaging equipment, medical devices, and measuring and analyzing instruments.
3. Olympus - Headquartered in Japan, Olympus is an integrated optical manufacturer of digital cameras, lenses, telescopes, microscopes, endoscopes and medical devices.
4. Micron - Headquartered in the United States, Micron is a leading global supplier of semiconductor solutions, providing optics in components and system solutions for storage and computing.
5. Schneider Electric - Headquartered in France, Schneider Electric is a leading global provider of energy management and automation solutions, offering optical products for lighting, power management, and security devices.
The above are just a few examples of foreign companies in optics, and there are many other foreign companies with optics operations in China. Please note that this list is not exhaustive and each company's product line and business scope may vary. For specific needs, please inquire further about the relevant companies.