Introduction to Flat Concave Lens

Flat concave lens: One side is concave and the other side is planar, with a negative focal length. Typically used for beam collimation, increasing (decreasing) focal length, or expanding (reducing) an image. To obtain a more spherical aberration, when the incident beam is a collimated beam, the collimated beam should be incident onto the concave surface of the flat concave lens. K9 is a common flat concave lens material, mostly used in visible and near-infrared applications. In addition to K9 flat and concave lenses, our company also provides UV fused quartz and calcium fluoride flat and concave lenses. UV fused quartz has good transmittance and low coefficient of thermal expansion in the UV band, while calcium fluoride has a high damage threshold and chemical inertness.

Our flat and concave lenses are finely processed, with strict quality control, ensuring that we provide high-quality flat and concave lens products to users at reasonable prices.

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ABOUT BORISUN

Hanzhong Brisun Optics Co., Ltd. Is the 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.

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