Optical Components

CASTECH is a global leader in nonlinear optical crystals, laser crystals, precision optics, and laser components for laser applications, optical communications, biomedical VR/AR, and lidar. With ISO 9001 and IAFT 16949 quality management system, we consistently enable our customers from prototype to mass production stage.

Provides customized materials for low stress, high purity, and high uniformity infrared crystals to customers in over 60 countries and regions around the world.

Develops and manufactures high-power diode laser components and materials (photon generation), laser optics (photon control), photonic application modules, assemblies, and subsystems (photonics application solutions) with a focus on automotive, pan-semiconductor, and medical and health application solutions.

Founded in 2005, DayOptics is a leading integrated optical components manufacturer. Focusing on the field of optics, we are dedicated to establishing ourselves as a prominent brand known for reliable optical components. We specialize in the design, R&D, production, and sales of optical components such as wave plates, mirrors, PBS, crystals, filters, windows, prisms, lenses, and more.

Manufacturer of high quality optical passive components. DK Photonics produces a large array of fiber optic components such as 1064 nm high power isolator, MM pump combiner, pump laser protector, used for high power fiber laser applications. Also offers PM fiber pump combiner for ultrafast fiber laser applications.

Specializes in laser information application fields. Products cover semiconductor lasers, fiber lasers, solid-state lasers and related laser application systems. Offers customized products and production services.