Optical Windows, Custom Optical Windows, Optical Glass manufacturer / supplier in China, offering Custom Optical Windows/Laser Protective Windows, Optical Glass Dielectric Hr Mirror, High 99.9 Reflective Coated Aoi 45 Degree Optical Mirror and so on.
Min. Order / Reference FOB Price | |
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1 Piece | US $1.00/ Piece |
Local Area: | Xian, Shaanxi, China |
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R&D Capacity: | OEM, ODM, Other |
Payment Terms: | LC, T/T, PayPal |
Structure: | Meniscus Lens |
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Irregularity: | Lambda/10 |
Products Advantages: | High Precision, High Quality Control, High Efficie |
One side of meniscus lens is convex, another side is concave. It can be a convergent lens or a divergent lens, which is decided together by refractive index, curvature and radius.
Positive meniscus (convex-concave) lenses are designed to minimize spherical aberration. When used in combination with another lens, a positive meniscus lens will shorten the focal length and increase the numerical aperture (NA) of the system without introducing significant spherical aberration. When used to focus a collimated beam, as shown in the diagram above, the convex side of the lens should face the source to minimze spherical aberration.
Negative meniscus lenses are designed to minimize spherical aberration. These N-BK7, UV fused silica, calcium fluoride, and zinc selenide lenses consist of a convex surface and a concave surface where the concave surface has the greater radius of curvature. In combination with another lens, a negative meniscus lens will decrease the NA of the system. A negative meniscus lens is a common element in beam expanding applications.
specification:
MaterialBK7, Fused Silica,Ge,Si, CaF2.Diameter5-500mmSurface Figureλ/2Diameter Tolerance+0.01, -0.01 mmThickness Tolerance±0.1 mmParaxial Focal Length±2%Centration<3 arc minutesClear Aperture>90%Surface Quality60-40 scratch and dig or betterProtective Bevel0.25 mm x 45°Coating: Specified by customers
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Factory information
Yutai Optics, we specialize in the design and volume manufacturing of high performance optical components such as lens,prisms, windows,filters,mirrors and more for use in optical instruments and laser systems, as well as for military, telecommunications,medical, environment monitoring industry,material is widely ranged from optical glass to IR and UV glass.
As a Fast-growing supplier in Optics, Yutai Optics offers excellent service and good quality items,our products have been appreciated by many European and American customers,of course we build a long-term cooperation.YuTai Optics has quickly established itself as a leader in optical components from its advanced technology and quality control.
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