low light

wholesale Factory Coating Dichroic Optical Filter Sapphire Optical Glass Design Silicon Window For Lighting Specification Materials BK7 or other optical glass,quartz,sapphire,Ge,Si,ZnSe,CaF2 etc Length 5~200mm Width 5~200mm Diameter 1.5~300mm Center thickness tolerance +/-0.01mm Length tolerance +/-0.01mm Width tolerance +/-0.01mm Diameter tolerance +/-0.0005mm Surface accuracy N=1~3 Irregularity ΔN=0.1~0.5 Surface quality 10/5~60/40 Coating Upon request Application area

Optical Mini Glass Bk7 Dome Lens K9 od3.98 inch Hemisphere Guide Top Camera Coating Dome Lens For Video Camera A single lens used to form an image will always show some chromatic aberration, that is variation of focal length with wavelength. Achromatic doublet lenses correct for this as they are constructed from two different glass types and designed to remove first order chromatic aberration. Generally spherical aberration is reduced at the same time. Achromatic doublets are

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

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

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 Cemented lensThe cemented lens is also called an achromatic lens, which is formed by cementing

High Temp Round Optical Glass Double Achromatic Lens Cemented Lenses Specification Cemented lens: The cemented lens is also called an achromatic lens, which is formed by cementing two single lens elements. The performance of multi-color (white light) imaging is much higher than that of a single lens. The achromatic lens consists of two lenses of different materials glued together to correct the dispersion of the glass. Eliminating the problem of chromatic aberration,

Wholesale series achromatic doublet cemented focusing lens telescope true sapphire ball lens Specification Cemented lens: The cemented lens is also called an achromatic lens, which is formed by cementing two single lens elements. The performance of multi-color (white light) imaging is much higher than that of a single lens. The achromatic lens consists of two lenses of different materials glued together to correct the dispersion of the glass. Eliminating the problem of

Surface quality 10/5~60/40 Plano Convex Lenses Infrared Collimator Spherical Silica Lenses Optical Design Optical glass, also called optical lens, glass lens and optical glass lenses, is always divided into plano-convex (PCX), double-convex (DCX), plano-concave (PCV) and double-concave (DCV) lens. The materials are always soda-lime, borosilicate and quartz. The diameters range from 1 mm to 300 mm and tolerance is controlled below ±0.1 mm. Our glass lens can resist scratching,

Optical BK7 Ge Si ZnSe Plano Convex Lenses Infrared Collimator Spherical Sapphire Optical Silica Lenses Application Used as magnifying glass The convex lenses are used as magnifying glass to help people to observe tiny thing. Educational application Optical lens is a important part in physic, they are widely used in school for education purpose. Used in instruments Optical lenses are widely used in medical, biology and astronomical instruments, such as microscopes, telescopes

Custom optical half ball spherical Ge germanium Infrared IR half ball silica spherical optical lens Aspheric lens surfaces are used to correct spherical aberration (where the converging light from a lens does not have a common focal point, resulting in a distorted image) in lasers and imaging. Traditional spherical lenses cannot collimate light effectively because even small angles of incidence can produce spherical aberrations. This can mean that several components may be

Custom 50 mm Sapphire K9 Ruby Fused Silica Spherical Lens Optical Ball Lens Ball lenses are, as the name suggests, completely spherical lenses most commonly used to couple light in and out of fibres. Knight Optical supplies a range of stock ball lenses as well as bespoke designs to your own specifications. Our stock ball lenses offered in quartz have excellent UV and IR transmission between 185nm to 2000+nm, while our sapphire lens have a higher refractive index, allowing a

Wholesale Optical glass plano convex lens/flat convex glass lens Condenser lenses are used for concentrating light into a beam. Condenser lenses are typically used in enlargers, projectors and illumination lighting systems. This range of large condenser lenses have been optically polished and of high quality at very reasonable prices. Our stock range of high quality planoconvex condenser lenses are available direct from this page with focal lengths between 250mm to 500mm and