Lenses

Coating Witness Samples Product Description Coating Witness Samples is measurement of coating stresses on substrates. Often the material is the same as the finished product' substrate material and is almost always made to 25mm or 1” (25.40mm dia) in thickness of 1mm to 3mm with both sides polished or one side polished.CDGM Optical Glass full range of refractive index's (Equivalent Schott & Ohara optical glass), Silicon, Germanium, Sapphire, B270, Float glass, Fused Silica, Borosilicate. Custom Windows can be used for testing transmission to measure reflectivity, temperature, durability, polarization and salt fog tests. It is essential to maintaining the accuracy, repeatability and traceability of the coating process.

Silicon windows and Silicon lenses for Infra-Red Imaging Systems Product Description Infrared lenses are lens assemblies optimized for light processing in the infrared region, including near-infrared, short-wave infrared, mid-wave infrared, and long-wave infrared. IR lenses are optical lenses that use specific substrates or anti-reflective coatings to maximize performance for applications above 700nm including thermal imaging, FLIR or spectroscopy. The single crystal of silicon used in semiconductors has low absorption in the infrared wavelength of 1.2 - 7μm and it can be used as an optical element of infrared light.  Silicon (Si) is a hard material and has good transmission in the IR bank, it is a good choice to make IR windows to protect other elements of lens systems. Silicon optics are used in a variety of infrared applications operating in the 1.2 - 7μm wavelength range, including near infrared imaging or infrared spectroscopy. Silicon's low density (2.329 g/cm 3 ) is ideal for weight- sensitive applications. Silicon has a Knoop hardness of 1150, which makes Silicon Lenses harder and less brittle than comparable germanium optics. And refractive index of about 3.4975 at 1.357µm through to 3.4176 at 11µm, it is a good choice to use in broad-spectrum thermal imaging systems. Sometimes, the Si lenses will be used with Ge and ZNSE in the optical systems to form well-corrected. We use our expertise to design and manufacture high-performance IR Optical Lenses and assemblies for our customers.

Custom Plano-Concave Lenses for Laser Optics Product Description Plano-concave lenses convert incoming parallel light rays into diverging beams that appear to come from a point in object space, the so-called imaginary focal point. Like plano-convex lenses, these lenses have the least image aberration at absolute conjugate ratios greater than 5 or less than 1/5. For this reason, plano-convex lenses should be placed so that the parallel beam enters the curved surface of the Optical lens. However, when a plano-convex lens is used to disperse a high-power pulsed laser beam, this orientation of the lens can be detrimental, with stationary reflections from the curved surface creating secondary focusing that can damage the optics in front of the concave lens and even cause the laser to collapse at that point. Therefore, in high power applications, the concave surface should be oriented in such a way as to avoid secondary focusing. CLZ supply high-quality optical components to customers in the laser measurement and laser scanning industry for applications such as distance monitoring systems, laser scanning, and mapping. Our high-quality optical components include: Single lenses, Condenser lenses, Doublet lenses, Triplet lenses, Optical windows, and optical Filters. The materials include Optical glass, Fused Silica, Silicon, Sapphire, etc. And our V coatings can suit all laser options available with R<0.25%-0.5%.

A biconvex lens means that both surfaces of the lens are convex. Its focal length is positive and mainly for the function of focusing. It is commonly used in imaging relay system and object imaging at finite conjugate distance. The smaller the conjugate ratio is, the smaller the aberration will be. Oplens can not only customize the common plano-convex lens of N-BK7 or fused quartz, but also customize the biconvex lens of any glass material. You are welcome to contact us for customized biconvex lenses. Parameters Material Optical Glass Surface Flatness < λ/5 @ 633nm Scratch/Dig < 40/20 (both sides) Eccentricity  ≤ 1arcmin Focal Length Tolerance  < ± 1% Diameter Tolerance  < + 0.00/ - 0.02mm Thickness Tolerance  < ± 0.05 Clear Aperture  ≥ 95% of diameter Optical lenses or optical system is a complex device with high requirements, which demands not only the combination of high-precision optical lenses and optical mechanical parts, but also professional assembly environment to ensure their key arguments, such as cleanliness, coaxiality, focal length, distinguishability and other indicators, are not affected, so as to achieve the best optical performances of the end product. Because of this, Oplens set up its own assembly department in 2021, which not only improves our production line but also can better meet the needs of customers for lens assembly. If you don’t have such a lens assembly environment or inspection conditions, we are capable to help you in this respect.   What Processes are Involved in Optical Assembly Manufacturing? Optical assembly processes may include mounting, alignment, precise optical pathway placement, beam manipulation, focusing, optical bonding, and sonic welding techniques. Typical Optical Component Assembly Work Includes: Bonding glasses & filters into wheels Laminating glasses & filters Product labelling & identification Gluing glass to glass components Mounting in screw mounts and holders Gluing glass to metal assemblies Press fitting glass lenses into housings. To outsource your lens assembly, contact our sales team who will advise you on your next move.

Minimum Order: 10 long tons

An achromatic lens is a lens designed to minimize chromatic aberration and spherical aberration. Two-plate achromatic lens is one of the simplest achromatic lenses, which can be divided into two types: double agglutination and double dissociation. Of course, achromatic lenses can also be composed of multiple lenses, depending on their uses. The achromatic lens with large aperture is usually separated and assembled in the frame with excellent comprehensive performance. Achromatic lenses are widely used. A multi-lens optical system usually consists of several achromatic lenses. High quality microscopic objective lens and photographic lens are all complex lens combination systems which eliminate both achromatic and other monochromatic aberrations. Oplens can produce single layer or multi-layer anti-reflective films with all kinds of coating materials on both outside surfaces. Their performance is superior to that of all single element lenses. Parameters Material  Optical Glass Surface Flatness  < λ/5 @ 633nm Scratch/Dig  < 40/20 (both sides) Eccentricity  ≤ 1arcmin Focal Length Tolerance  < ± 1% Diameter Tolerance  < + 0.00/ - 0.02mm Thickness Tolerance  < ± 0.05 Clear Aperture  ≥ 95% of diameter Coating  AR OR BBAR Diameter Range  5~260mm You are welcome to contact us for customized achromatic lenses.

Minimum Order: 10 long tons

The biconcave lens, also named double concave lens, is usually made of flint glass and used for beam divergence. It’s focal length is negative but the parallel incident ray diverges outward. The two sides of the biconcave lens curvature radius can be equal or not. Combined with plano-convex lens, it is generally used in beam expanders, projection optical systems and optical viewers, etc. Oplens can not only customize the common plano-concave lens of N-BK7 or fused quartz, but also customize the biconcave lens of any glass material. You are welcome to contact us for customized biconcave lenses.

Minimum Order: 10 long tons

A plano-concave lens is a lens that has a flat surface on one side and a concave surface on the other side. The focal length of a plane-concave lens is negative, allowing the beam to diverge.  Therefore, it can be used in optical system for beam expansion, light projection or to increase focal length.   Oplens can not only customize the plano-concave lens with common materials of N-BK7 (Shott) and fused silica, but also customize the plano-concave lens of any glass material.     You are welcome to contact us for customized plano-concave lenses. Parameters Materi , al: Surface Flatness: Scratch/Dig: Eccentricity: Foca , l Length Tolerance Diameter Tolerance: Thickness Tolerance: Clear Aperture: Coating: Diameter Range: Optical Glass < λ/5 @ 633nm < 40/20 (both sides) ≤ 1arcmin < ± 1% < + 0.00/ - 0.02mm < ± 0.05 ≥ 95% of diameter AR OR BBAR  5~260mm

Minimum Order: 10 long tons

Oplens Plano-convex lens is an optical lens in which one side of the lens is flat and the other side is convex. The focal length of plano-convex is positive, mainly for the role of focusing. The collimating beam can be gathered on the rear focus or the point light source can be transformed into a collimating beam. Plano-convex lenses are widely used in optical display system, optical projection system, optical imaging system and laser measurement system.   Oplens can not only customize the plano-convex lens with common materials of N- BK7 (Shott) and fused silica, but also customize the plano-convex lens of any glass material.     Parameters Material: Surface Flatness: Scratch/Dig: Eccentricity: Foca , l Length Tolerance Diameter Tolerance: Thickness Tolerance: Clear Aperture: Coating: Diameter Range: Optical Glass < λ/5 @ 633nm < 40/20 (both sides) ≤ 1arcmin < ± 1% < + 0.00/ - 0.02mm < ± 0.05 ≥ 95% of diameter AR OR BBAR  5~260mm Oplens is one of leading optical elements and spherical lens manufacturer. We insist on supply high precision optical products with consistent quality and professional serve. You are welcome to contact us for customized plano-convex lenses.

Minimum Order: 10 long tons

Negative meniscus lens A meniscus lens is a lens with two spherical surfaces, convex on one side and concave on the other. The lens provides a smaller beam diameter to reduce beam waste and spherical aberration. When one meniscus is combined with another lens, the focal length is shortened and the numerical aperture of the system is increased. This reduces image distortion and improves image resolution. There are two types of meniscus lenses: ● Positive meniscus lens The positive meniscus lens is used for applications requiring small focal numbers (less than 2.5). For focal lengths between 2.5 and 10, a meniscus lens minimizes spot size and improves image quality. The concave side curvature of a positive lens is smaller and the convex side curvature is larger. Frequently used for beam focusing applications Minimizes the increase in spherical aberrations for multi-element systems ● Negative meniscus lens The negative meniscus lens is used for applications using infrared materials with a high refractive index. These lenses serve as substitutes for other negative lenses with greater curvature on the concave side and less curvature on the convex side. They are used in beam spreading applications where minimal spherical aberration is required. Frequently used for beam expanding applications Minimizes the increase in spherical aberrations for multi-element systems Parameters Material  Optical Glass Surface Flatness  < λ/5 @ 633nm Scratch/Dig  < 40/20 (both sides) Eccentricity  ≤ 1arcmin Focal Length Tolerance  < ± 1% Diameter Tolerance  < + 0.00/ - 0.02mm Thickness Tolerance  < ± 0.05 Clear Aperture  ≥ 95% of diameter Oplens provide custom optical components, we can custom sizes and shapes. If you are interested in any of our products, please click here.

Minimum Order: 10 long tons

This continuous zoom lens can be applied for security and surveillance. Its focal length can be adjusted from 25mm to 100mm. The power input is DC 6-12V. The focus range is 3m to infinity. The weight of the product is 1.187kg. The interface is flange.

Minimum Order: 1 bags

45 Degree Laser Reflector Optical Windows Custom Optical Windows Description Product material: Optical quartz glass; optical h-k9l glass; others need to be custom-made Optical Window Standard level: Surface Quality 40-20  Parallelism<5 Diameter tolerance: -0.1mm Thickness tolerance: ±0.1mm Chamfering of lens: 0.5mm  45° Optical aperture: ≥90% Coating: reflectance coating. Single point reflection: 355nm HR, 532nm HR,650nm HR, 1064nm HR, Two point reflection: 532nm & 1064nm HR, 650nm & 1064nm HR Three point reflection: 532nm-650nm-1064nm HR, 445nm-532nm-650nm HR Full reflectance + high permeability coating and other coating methods, and can be coated according to customer requirements. Our custom optical windows are custom made from hundreds of types of optical glass materials to meet all scientific instrument applications from UV-Visible and NIR wavelengths.

Minimum Order: 10 long tons

ZnSe Cylindrial Lens 0 Degree Output Lens Description Material :K9 and JGS1 Quartz ZnSe lens is a good material for CO2 laser cutting and engraving machine, We select excellent material from USA, High transmission and high quality surface roughness. With high quality, we produce ZnSe plano convex lens, ZnSe plano concave lens, ZnSe meniscus lens, Znse ball lens, and custom size ZnSe. Product Details: Diameter 5mm to 250mm Thickness 0.5-40mm Material Import USA ZnSe,China ZnSe Surface Quality 40-20 standard Flatness 1/10 lambda Chamfer 0.25mmx45degree Focal Length Tol. +/-1% Coating Wavelength 8um-12um Clear Aperture >85% of diameter Design Wavelength 10.6um

Minimum Order: 10 long tons

Square Optical Windows Optical Laser Filter Description Optical Windows are flat, plane-parallel plates with ground and polished faces that often used as isolate two physical environments while allowing light to pass. Optical Windows should be selected based on the material transmission or mechanical properties of the substrate and Windows do not cause change in the magnification of a system. Bofa Square Optical Windows are available in UV Grade Fused Silica (FS) & BK7 Glass materials, the commonly used coatings are antireflection coating (AR). We supply a range of Multiple anti-reflection coating Lens options are available for the Ultraviolet (UV), visible, or Infrared (IR).

Minimum Order: 10 long tons

Laser Biochemical Filter Lens Filter Lens Description Material :K9 and JGS1 Quartz Biochemical Filter Lens Details: The wavelengths of filters commonly used in biochemical instruments are 340nm, 405nm, 492nm, 546nm, 578nm, 630nm, etc. Biochemical filters are manufactured using plasma assisted deposition (PIAD) and ion beam assisted deposition (IAD) processes  to ensure stable spectral performance and long service life.Multiple structural designs, multiple matching types and cut-off background  above OD6 can make the system obtain a good SNR.

Minimum Order: 10 long tons