Optical Filters

Optical Glass (Tempered Glass with Silk‑Screen Printing)

Optical glass is a special type of glass with specific optical properties such as high transmittance, low dispersion, and uniform high refractive index. Its core applications revolve around "light transmission, refraction, imaging, and filtering," covering many high‑precision and civilian fields. The main application scenarios are described in detail below:
1. Imaging Optics (Core Application)

This is the most fundamental and critical use of optical glass. The key requirement is precise imaging, demanding high uniformity of refractive index and low distortion.
Cameras / Photographic Equipment: Lens groups of DSLR and mirrorless cameras (e.g., wide‑angle, telephoto lenses) and multi‑camera modules of smartphones (main, telephoto, ultra‑wide) use multiple types of optical glass (such as crown glass and flint glass) to correct chromatic and spherical aberrations and improve image clarity.
Security Surveillance: Lenses of surveillance cameras, especially high‑definition night‑vision models, rely on optical glass to ensure good transmittance and stable imaging under low‑light conditions.
Medical Imaging: Detector windows of X‑ray and CT machines (requiring both high transmittance and radiation shielding), endoscope optical transmission components, and microscope objectives/eyepieces all depend on optical glass for accurate medical diagnostic imaging.

2. Optical Instruments & Measurement Devices

These applications demand strict precision and environmental stability of the glass to guarantee accurate signal transmission.
Precision Metrology Instruments: Prisms, diffraction gratings, and beam splitters in laser interferometers, spectrometers, theodolites, and levels are made from highly uniform optical glass to ensure measurement accuracy.
Industrial Inspection Equipment: Machine‑vision system lenses for defect detection on production lines and optical windows of laser rangefinders rely on optical glass for fast, precise industrial inspection.
Astronomical Observation Equipment: Primary and secondary mirrors of large‑aperture telescopes require oversized, ultra‑uniform optical glass to capture distant celestial light and form high‑quality images.

3. Optoelectronics & Communication

The core need is efficient optical signal transmission, modulation, or conversion, demanding high transmittance, low loss, and specific wavelength performance (e.g., IR, UV).

Fiber‑Optic Communication: The core ("core") and cladding of optical fibers are made from high‑purity quartz‑based optical glass, enabling long‑distance, low‑loss transmission that underpins 5G and broadband networks.
Optoelectronic Devices: Laser resonator windows, photodetector windows, and coupling lenses in optical modules all use dedicated optical glasses (e.g., infrared glass, UV glass) matched to the required spectral band.
Display Technologies: Polarizer substrates and light guides for LCDs, encapsulation glass for OLEDs (requiring high transmittance and hardness), and optical elements for AR/VR devices (such as Fresnel lenses) all benefit from the design flexibility of optical glass.

4. Defense & Aerospace

These are high‑end applications where optical glass must endure extreme environments (wide temperature ranges, strong vibration), resist radiation, and provide high reliability.