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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.

Achromatic lens is composed of convex and concave lenses made of two glasses with different optical properties. Coronal glass with small refractive index and large dispersion ability is often used to make convex lens, and flint glass with large refractive index and small dispersion ability is used to make concave lens. Achromatic lens can only overlap the image points of the two main color lights (see Figure), so as to eliminate the color difference of the two color lights.

Two piece achromatic lens is one of the simplest achromatic lenses. It can be divided into two types: Double gluing and double separation. Of course, achromatic lens can also be composed of multi chip lens, which depends on its use needs. Achromatic lenses with large aperture are usually separated. They are assembled in the frame and have excellent comprehensive performance. For the double split lens, the gap between the two lenses is actually equivalent to the third lens, which can better eliminate the color difference than the glued lens. Therefore, it can balance the aberration in a wide range of wave bands and play a role in the field of broadband imaging.

Technical parameters:
Material: optical glass, H-K9L (N-BK7),fused quartz
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/ 8 (high precision, we can process to 1 / 10λ)
Surface quality: 60/40 (we can process to 10-5 with high precision)
Effective caliber: ≥90%
Coating: Coating: multilayer antireflective film
A:350-650nm
B:650-1050nm
C:1050-1580nm
 

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.