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Dome Infrared Fresnel Lens Led Module 80mm Aacrylic pc Big Underwater Camera Lens For PIR Motion Module Fresnel lenses consist of a flat surface with interspaced, concentric steps whereby each step corresponds to the surface of a conventional lens. Each step thereby acts as a refractive surface, much like a prism. This gives the Fresnel lens a common focal length equivalent to a traditional lens, but with a fraction of the thickness. Additionally, because the lens is so thin

Optical Glass BK7 Spherical Meniscus Hemispherical Cover Varifocal Dome Lens Advance Optical-Electronics supply a wide range of IR optics for use in the infrared wavebands. Advance Optical-Electronics supply high quality infrared optics made to our/ your exact specification. Every component is individually tested by our highly skilled technicians in our state of the art metrology lab to ensure all components meet our high quality standards. Specification Materials BK7 or

43mm Optical lenses protective dome ball and half ball lenses glass cover used for underwater photography Concave lenses, are a simple lens with one spherical face and one flat plano face. Because the spherical face is concave the lens has a negative focal length, allowing the part to increase the divergence of convergent light. Concave lenses can be used to balance out the spherical aberrations caused by other lenses. This makes concave lenses very useful for controlling

Small Series Clear Coating Camera Used Optical Glass Protective Plastic Acrylic Dome Lens for Cellphone Mainly be used to protect the lens of underwater camera, security camera, LED, and unmanned aerial vehicle etc., dome lens could resist the pressure of water, and give a best view field to catch picture. Specification Materials BK7 or other optical glass,quartz,sapphire,Ge,Si,ZnSe,CaF2 etc Diameter 1.5~300mm Radius R0.8mm-∞ Focal length -30000mm~+30000mm Center thickness

Customized Optical Sapphire Polycarbonate Fresnel Clear Dome Led Lens 1. Reasonable price and brilliant quality. In China, there are many glass manufacturers and traders, there's a big competition in this area. Under this situation, we can not guarantee you the lowest price, but we absolutely guarantee you reasonable price in accordance with the quality. 2. Professional and patient service. We are a young and good educated sales and service team. Everyone has been in this

Optical BK7 Glass Hemisphere Optical Glass Half Dome Lens with 1mm Thickness A dome is composed of two parallel optical surfaces. Among optics domes are unique because, unlike any other optical components, the key attribute of the dome is to have no optical effect. Mirrors reflect light, lenses bend light, domes ideally change nothing. A dome is often exposed to the environment. Accordingly, domes made from hard ceramic materials are preferred due to their ability to

Dia 20mm Convex and Concave Optical bk7 Glass Clear Meniscus LED Optical Lens Meniscus lens is a crescent lens formed by two spheres with small radius of curvature and little difference in value.There is an achromatic difference when choosing the appropriate thickness.Meniscus lens is concave-convex lens.The lens has an convex mirror and an concave mirror face.If the radian outward is greater than the radian inward, the lens has a positive focal length and is used as a

High Precision Wholesale Aspheric K9 Glass Positive Meniscus Optical Display Lens Suppliers Specification Materials BK7 or other optical glass,quartz,sapphire,Ge,Si,ZnSe,CaF2 etc Diameter 1.5~300mm Radius R0.8mm-∞ Focal length -30000mm~+30000mm Center thickness tolerance +/-0.01mm Diameter tolerance +/-0.005mm Focal length tolerance +/-1% Surface accuracy N=1~3 Irregularity ΔN=0.1~0.5 Decenter 3'~1' Surface quality 10/5~60/40 Coating Upon request Application area Imaging

Specification Materials BK7 or other optical glass,quartz,sapphire,Ge,Si,ZnSe,CaF2 etcDiameter1.5~300mmRadiusR0.8mm-∞Focal length -30000mm~+30000mmCenter thickness tolerance+/-0.01mmDiameter tolerance+/-0.005mmFocal length tolerance +/-1%Surface accuracy N=1~3Irregularity ΔN=0.1~0.5Decenter3''~1''Surface quality10/5~60/40Coating Upon requestApplication areaImaging,Lighting,Laser etc Recommend Products Company Profile Shanghai Advance Optical-Electronics Technology Co., Ltd.

Specification Materials BK7 or other optical glass,quartz,sapphire,Ge,Si,ZnSe,CaF2 etcDiameter1.5~300mmRadiusR0.8mm-∞Focal length -30000mm~+30000mmCenter thickness tolerance+/-0.01mmDiameter tolerance+/-0.005mmFocal length tolerance +/-1%Surface accuracy N=1~3Irregularity ΔN=0.1~0.5Decenter3''~1''Surface quality10/5~60/40Coating Upon requestApplication areaImaging,Lighting,Laser etc Recommend Products Company Profile Shanghai Advance Optical-Electronics Technology Co., Ltd.

Specification Materials BK7 or other optical glass,quartz,sapphire,Ge,Si,ZnSe,CaF2 etcDiameter1.5~300mmRadiusR0.8mm-∞Focal length -30000mm~+30000mmCenter thickness tolerance+/-0.01mmDiameter tolerance+/-0.005mmFocal length tolerance +/-1%Surface accuracy N=1~3Irregularity ΔN=0.1~0.5Decenter3''~1''Surface quality10/5~60/40Coating Upon requestApplication areaImaging,Lighting,Laser etc Recommend Products Company Profile Shanghai Advance Optical-Electronics Technology Co., Ltd.

Specification Materials BK7 or other optical glass,quartz,sapphire,Ge,Si,ZnSe,CaF2 etcDiameter1.5~300mmRadiusR0.8mm-∞Focal length -30000mm~+30000mmCenter thickness tolerance+/-0.01mmDiameter tolerance+/-0.005mmFocal length tolerance +/-1%Surface accuracy N=1~3Irregularity ΔN=0.1~0.5Decenter3''~1''Surface quality10/5~60/40Coating Upon requestApplication areaImaging,Lighting,Laser etc Recommend Products Company Profile Shanghai Advance Optical-Electronics Technology Co., Ltd.