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Hanzhong Brisun Optics Co., Ltd. Is the high High precision optical element manufacturer provides customized production of Various optical lenses, including spherical lens, cylindrical lens, optical window, mirror, prism, filter, metal base mirror and other high-precision optical elements. The base materials include various optical glass, fused quartz, calcium fluoride (CaF2), zinc selenide (ZnSe), germanium (GE), silicon (SI), sapphire, metal and other materials. And provide antireflective film, high reflection film, spectroscopic film, metal film and other optical coatings.
The calcium fluoride biconvex lens has high transmittance within the wavelength range of 180nm-8μm (especially in the wavelength range of 350nm-7μm, the transmittance exceeds 90%) and low refractive index (for the working wavelength range of 180nm to 8.0μm, the refractive index variation range is 1.35 to 1.51). Therefore, it has high transmission even without coating.
It is often used as a window and lens of spectrometer, and also in thermal imaging system. In addition, because of its high laser damage threshold, it has a good application in excimer lasers. Calcium fluoride has higher hardness than barium fluoride, magnesium fluoride and other similar substances
Technical parameters:
Material: CaF2 (single crystal calcium fluoride)
Radius of curvature: ± 1mm - ± 50000mm ± 1%
Outer circle: 3mm-500mm ± 0.1mm
Center thickness tolerance: ± 0.05mm (we can process to ± 0.01mm with high precision)
Center deviation: 3′(we can process to 30 ″with high precision)
Surface accuracy: λ/ 4 (high precision, we can process to 1 / 10λ)
Surface quality: 60/40 (we can process to 10-5 with high precision)
Effective caliber: ≥80%
Coating: coating can be carried out according to customer requirements
In addition, we have thousands of kinds of stock, such as quartz plano convex lens, quartz plano concave lens, quartz biconvex lens, quartz biconvex lens, cylindrical lens, prism, filters, windows, beamsplitter and so on. The price is preferential and the quality is excellent, which can meet your demand for a small order.
If you are interested it, welcome to inquiry us or search "Hanzhong Borisun Optics Co.,Ltd "to know about more details.
