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.
Neutral density filters (nd filters) are commonly used in imaging or laser applications to avoid damage to camera sensors or other optical components caused by strong light. The ND filter will absorb or reflect the part of the light that is not transmitted, so as to uniformly reduce the transmittance in the spectrum of a certain part.
Material: SF11 class a optical glass or BK7 class a optical glass
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/ firstname.lastname@example.org (high precision, we can process to 1 / 10λ)
Surface quality: 60/40 (we can process to 20/10 with high precision)
Effective caliber: ≥90%
Inverted edge: < 0.2*45°
Reflection mode: 180°reflection (standard)
Coating: R < 0.25% @ 1550nm large surface (for retroreflection)
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.