Lenses

Bi concave lenses comprise of two inward equally curved surfaces. They are ideal for beam expansion, light projection and expanding the focal length of an optical system. Bi concave lenses have a negative focal length, so the lenses are used for image reduction or to spread the light. The bi concave lenses are offered with different diameters and focal lengths. We are able to do anti-reflection coating for the lenses, including single layer AR coating, multi-layer broad band AR coating for visible wavelengths, UV wavelength and infrared wavelength. The AR coating helps to improve the transmission of the lenses greatly. We offer customized bi concave lens, so please send us drawing or specification.

Minimum Order: 5 dozens

Bi concave lenses have equal radius of curvature on both surfaces. The lenses are often used to expand light beams or to increase focal lengths in optical systems and devices, and biconcave lenses are also used in combination with other lenses. Among the many devices using bi concave lenses are laser beam expanders, optical character readers, viewers and projection systems. We produce bi concave lenses with different diameters and dimensions. For custom made biconcave lens, please send us drawings or specifications. Custom Made capabilities: Material N-BK7, UV fused silica, JGS1,N-SF11, Silicon, Germanium, and optical glasses Diameter available 1.5mm to 700mm Tolerance +/-0.03mm Thickness tolerance +/-0.03mm Surface quality 20/10 or better Surface accuracy Lambda/4 or better Centering 1 arc min Chamfer protective or do as per requested Coating anti reflective coating for visible, UV, infrared wavelengths. Reflective mirror coating for the concave surfaces.

Minimum Order: 5 dozens

Custom Made capabilities: Material N-BK7, UV fused silica, JGS1,N-SF11, Silicon, Germanium, etc. Diameter available 1.5mm to 700mm Tolerance +/-0.03mm Thickness tolerance +/-0.03mm Surface quality 20/10 or better Surface accuracy Lambda/4 or better Centering 1 arc min Chamfer protective or do as per requested Coating anti reflective coating for visible, UV, infrared wavelengths

Minimum Order: 5 dozens

double convex lenses comprise two convex spherical surfaces, generally with the same radius of curvature. Bi convex lenses are used as magnifiers, condensing lenses and objectives. We produce bi convex lenses with two surfaces highly polished. Applying anti reflective coating on the surfaces of bi convex lenses greatly improve its optical performance and transmission. The AR coating is available from us, including MgF2 single layer AR coating and broad band AR coating for visible, UV and infrared wavelengths. Laser standard AR coating is available from us too. For custom made double convex lenses, please send us drawings or specifications.

Minimum Order: 5 dozens

Plano convex lenses have one plano surface and one convex surface, they have a positive focal length. Plano convex lenses are widely used for focusing and collecting light in optical instrument. We produce plano convex lenses with crown glasses, flint glasses, UV grade fused silica glasses and infrared glasses, such as N-BK7, N-BAK4, N-SF11, JGS1, quartz, Silicon and sapphire. Anti-reflective coating for plano convex lenses are available from us, we are able to coat at visible, UV and infrared wavelengths. We produce plano convex lenses with competitive prices and fast delivery. For custom made lenses, please send us drawings or specifications. Our custom made capabilities Substrate Optical glass N-BK7, N-BK4, UV fused silica, silicon, sapphire, etc. Diameter available 1.5mm to 800mm Tolerance +/-0.02mm Thickness tolerance +0/-0.05mm Surface quality 40-20 Irregularity Lambda/2 or better Centering 1 arc min or better Chamfer Protective chamfer Coating Anti-reflective coating for visible, NIR, UV and infrared wavelengths or no coating

Minimum Order: 10 long tons

Plano-concave lenses are thicker at the edge than in the center and flat on another surface. Plano concave lens (PCV) has negative focal length. So the lenses are used to bend parallel input rays so they can diverge from one another making them useful for beam expansion and image reduction application. We offer plano concave lenses with anti-reflection coating, which markedly improves the transmission efficiency. AR coated plano concave lenses are widely used in a lot of optical imaging systems. Custom Made capabilities: Material N-BK7, UV fused silica, JGS1,N-SF11, Silicon, Germanium, etc. Diameter available 1.5mm to 700mm Tolerance +/-0.05mm Thickness tolerance +/-0.05mm Surface quality 20/10 or better Surface accuracy Lambda/4 or better Centering 1 arc min Chamfer protective Coating anti reflective coating for visible, UV, infrared wavelengths and reflective coating for the concave surface, mirror coating

Minimum Order: 10 long tons

Plano convex lenses are flat on one side and with a precision convex surface on another side. Plano convex lenses are used to focus, collect and collimate the light to one point. It’s ideal choice to focus light to a single point. The lenses are useful in lasers, detectors, collimators, condensers and fiber optics. Our plano convex lenses are polished to tight tolerances minimizing wave front distortion. The lenses are offered with anti-reflection coatings for different wavelengths including visible, UV and infrared wavelengths. Competitive prices and fast delivery are available from us for the lenses. Our production capabilities: Substrate Optical glass N-BK7, N-BAK4,UV fused silica,silicon,sapphire, etc. Diameter available 1.5mm to 800mm Tolerance +/-0.02mm Focal length tolerance +/-1% Thickness tolerance +0/-0.05mm Surface quality 40-20 or better Irregularity Lambda/2 or better Centering 1 arc min or better Chamfer Protective chamfer Coating Anti-reflective coating for visible, NIR, UV and infrared wavelengths or no coating

Minimum Order: 5 dozens

Bi convex lenses have two outward curved surfaces, normally the two surfaces have same radius of curvature, with finely polished. Bi convex lenses have positive focal length, so they are used for 1:1 imaging and in multi-element systems. Bi convex lens is a good choice when the object and image are at equal or near equal distance from the lens. Bi convex lens spherical aberration is larger than that of plano convex lens, so focal length may not gather at one point. We manufacture bi convex lenses with optical flint glasses, crown glasses, UV grade fused silica glass and infrared glasses. AR coating is applied to the surfaces of bi convex lenses for enhancing transmission.

Minimum Order: 5 dozens

Plano concave lenses are flat on one side and have concave surface for another side. The lenses are designed for parallel light to be incident to the concave surface. So the plano concave lenses are used for applications including expanding beam, moderating quality image and also used for optical instruments. Because of diverging cone and virtual image, the typical use for plaon concave lens is beam expander. We produce plano concave lenses with different optical glassed such as, UV fused silica glass, N-BK7, N-BAK4, N-LAK22, Corning 7980, silicon, sapphire, etc. Anti-reflective coating and high reflection coating are available for the plano concave lenses.

Minimum Order: 10 long tons

Double Convex Lenses are used in image relay applications, or for imaging objects at close conjugates. Double Convex Lenses have positive focal lengths, along with two convex surfaces with equal radii. Aberrations will increase as the conjugate ratios increase. DCV Lenses are used in a range of industries or applications. Double convex lenses are optical components with both surfaces curved outward, designed to converge light rays to a specific focal point. Their geometry is essential for applications that require precise light focusing.These lenses are known for their ability to produce a sharp, clear image by converging light rays. They are fundamental in various optical systems, enhancing the quality and clarity of vision and imaging.

BK7 window has good performance over visible and near infrared wavelength region,is ideal for applications require minimal transmitted beam deviation. It is suitable for AR coating . Specifications of BK7 Optical Windows: Material: BK7 grade A optical glass Bevel:  <0.25mm X 45° Coating: Optional (Uncoated, AR, HR, PR, Coating, etc.)   Standard High Precision Dimension Tolerance +0.0/-0.1 +0.0/-0.02 Thickness Tolerance ±0.1 ±0.005 Surface quality: 60-40 10-5 Clear Aperture >85% >95% Flatness(per 25mm@633nm) λ /2 λ /10 Parallelism 3 min 3 sec

Wedge prism is an optical element with plane-inclined surfaces, usually the faces are inclined toward one another at a very small angles. It diverts light toward its thicker portion. Wedge prisms can be used as isolating components. Wedges may also be used to produce a small deviation which doesnt allow return to source. Specifications of Wedge Prisms: Material:  N-BK7 Grade A optical glass, Fused silica Dimensional tolerance: +/-0.1mm Surface quality: 60-40 Flatness: λ/4@632.8nm Wedge tolerance:  ±1 arcmin Bevel: Protective Coating: Optional

Ball Lenses are commonly used to improve signal quality in fiber coupling applications, or for use in endoscopy or bar code scanning applications. Ball Lenses feature short back focal lengths to minimize the distance needed from the Ball Lens to the optical fiber. Our Optics offers a variety of Ball Lenses in a range of substrates for performance in the ultraviolet to the NIR. Optical glass lenses Application Fiber coupling: Ball lenses efficiently couple light between fibers or from fibers to detectors, enhancing the efficiency of telecommunications and data transmission by precisely focusing and directing light. Laser alignment: They are used to collimate laser beams to ensure that the light travels along parallel paths, which is critical for laser scanning, measurement, and alignment systems.

Parameter 470nm Low Pass Filter CWL 470±10nm Peoduct size custom (Square of round) Transmission wavelength 350nm-460nm Optical density >OD2-OD6  Product material K9,BK7,B270,D263T Surface quality 60-40,40-20 The 470nm Low Pass Filter is designed to transmit light wavelengths shorter than 470nm while blocking longer wavelengths, ensuring excellent spectral separation and high transmission efficiency. This makes it an essential component in fluorescence imaging, spectroscopy, biomedical instruments, machine vision, and laser-based applications.