K9 Glass Plano-Concave Lens PG204C003

Effective Diameter: 1–300mm Dimensional Tolerance: ±0.01mm Angle Tolerance: ±5′

An axicon is a precision optical element with a rotationally symmetric conical structure. It converts parallel incident light into an approximately diffraction-free Bessel beam, producing a stable annular field or hollow light tube for laser medicine, beam shaping, research experiments, and precision detection. Scysgx uses more than 260 precision processing machines and 65 specialized inspection devices in a complete in-house development and production process. Fully customized axicons are available in multiple materials, apex angles, and specifications, with antireflection, high-reflection, high-laser-damage-threshold, and other specialized coatings. Precision meets medical and research requirements, particularly for advanced medical optics such as laser corneal surgery. Axicons are core components for beam shaping and annular-beam generation. Operating principle: an axicon combines a plane surface with a conical surface. Parallel light incident normally is refracted by the cone into a line focus along the optical axis, producing a non-diffracting Bessel beam. Intensity distribution remains stable during propagation; ring diameter increases linearly with propagation distance while ring thickness remains constant, enabling long depth of field and uniform annular energy output. Axial line focusing meets special optical-path needs in laser medicine, particle manipulation, and annular processing.

Material: Fused Silica Surface Quality: 60-40 CT: 1.5mm

Cylindrical lenses focus light in one dimension to create a line focus or reshape a light beam. They are used in optical measurement, machine vision, laser line generation, and imaging systems. VY Optics provides cylindrical lenses with different materials, surface shapes, dimensions, and optical specifications to meet individual system requirements. Material: Fused Silica Suface Quality: 60-40 CT: 1.5mm What Is a Cylindrical Lens?A cylindrical lens is an optical component that focuses or expands light in one direction. Unlike a spherical lens, it has optical power along one principal axis. This property allows the lens to form a line focus or change the shape of a light beam. Cylindrical lenses are commonly used in optical measurement, machine vision, imaging equipment, and laser optics. The right lens design depends on the required focal length, beam shape, working distance, and optical layout. How Does a Cylindrical Lens Work? A cylindrical lens has curvature along one principal direction and little or no optical power along the perpendicular direction. As a result, it changes the light distribution in one dimension while preserving a different distribution along the other axis. Depending on the lens shape and orientation, it can focus a beam into a line, expand a narrow beam, or correct an optical image in one direction. Proper alignment is important for achieving the intended optical result. How to Choose the Right Cylindrical Lens Choosing a suitable cylindrical lens starts with the optical system requirements. Consider the following parameters before placing an order. Required focal length and optical power. Plano convex or plano concave lens configuration. Lens material and operating wavelength. Physical dimensions and installation space. Surface quality, dimensional tolerances, and coating requirements. Beam size, working distance, and intended optical function. For this reason, an optical drawing or a detailed specification list is helpful when selecting or developing a cylindrical lens. Cylindrical Lens Manufacturing and CustomizationVY Optics provides optical component manufacturing based on customer drawings and technical requirements. Available design options depend on the selected material, lens geometry, dimensions, and production feasibility. Customers can submit drawings or provide the required focal length, size, material, coating, and tolerance information. Our team can then review the specifications and recommend a suitable manufacturing approach. Frequently Asked Questions What is the main function of a cylindrical lens?Its main function is to focus, expand, or shape light in one dimension. It is often used to produce a line focus or control the width of a light beam. What is the difference between a cylindrical lens and a spherical lens?A cylindrical lens has optical power mainly along one principal axis. A spherical lens generally focuses or diverges light in both transverse directions. What is the difference between plano convex and plano concave cylindrical lenses?A plano convex cylindrical lens is generally used for converging light in one direction. A plano concave cylindrical lens is generally used for diverging light in one direction. Can cylindrical lenses be supplied with optical coatings?Coating options depend on the substrate, operating wavelength, and required optical performance. Please provide your coating specifications for evaluation. Can I order cylindrical lenses according to a drawing?Yes. VY Optics can review drawings and technical specifications to assess manufacturing options. Please provide the dimensions, focal length, material, tolerances, and coating requirements for a more accurate quotation.

An achromatic lens can be defined as a lens which is made by a combination of two different types of lenses carrying different focal powers in a manner such that the images formed by the light of both the combined lenses are free from chromatic aberration or achromatism. Material: K9 glass, fused silica glass, SF11 glass etc. Dimension: 1mm-300mm Surface Accuracy: lambda / 10 Size Tolerance: +/-0.01mm Angle Tolerance: 30 arc seconds Coating: AR coating, non-polarizing coating, optional ,customized An achromatic lens can be defined as a lens which is made by a combination of two different types of lenses carrying different focal powers in a manner such that the images formed by the light of both the combined lenses are free from chromatic aberration or achromatism. History of achromatic lens Anatomy of an Achromatic Lens Theoretical considerations of the feasibility of correcting chromatic aberration were debated in the 18th century following Newton’s statement that such a correction was impossible (see History of the telescope). Credit for the invention of the first achromatic doublet is often given to an English barrister and amateur optician named Chester Moore Hall. Hall wished to keep his work on the achromatic lenses a secret and contracted the manufacture of the crown and flint lenses to two different opticians, Edward Scarlett and James Mann. They in turn sub-contracted the work to the same person, George Bass. He realized the two components were for the same client and, after fitting the two parts together, noted the achromatic properties. Hall used the achromatic lens to build the first achromatic telescope, but his invention did not become widely known at the time. In the late 1750s, Bass mentioned Hall’s lenses to John Dollond, who understood their potential and was able to reproduce their design. Dollond applied for and was granted a patent on the technology in 1758, which led to bitter fights with other opticians over the right to make and sell achromatic doublets. Dollond’s son Peter invented the apochromat, an improvement on the achromat, in 1763. An achromatic, also referred to as an achromat, typically consists of two optical components cemented together, usually a positive low-index (crown) element and a negative high-index (flint) element. In comparison to a singlet lens, or singlet for short, which only consists of a single piece of glass, the additional design freedom provided by using a doublet design allows for further optimization of performance. Therefore, an achromatic lens will have noticeable advantages over a comparable diameter and focal length singlet. An achromatic lens comes in a variety of configurations, most notably, positive, negative, triplet, and aspherized. It is important to note that it can be a doublet (two elements) or triplet (three elements); the number of elements is not related to the number of rays for which it corrects. In other words, an achromatic lens designed for visible wavelengths corrects for red and blue, independent of it being a doublet or triplet configuration. 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 and triplet lenses correct for this as they are constructed from two or three different glass types and designed to remove first order chromatic aberration. Generally spherical aberration is reduced at the same time. Achromatical lenses are widely used to form images, for example telescope objectives, and also to focus laser beams. These quality achromats have been designed and optimised for performance and are available as positive and negative focal length types. We stock a full range of achromatical lenses from small 3mm dia up to 110mm dia to meet a range of demanding applications. Typical applications where achromatic doublet lenses are used are imaging, analysers, fibre-optic lighting, laser range finders endoscopes and borescopes. We can offer custom achromatic doublet and triplet lenses to meet your requirements or alternatively edge stock lenses for a quick turnaround, please enquire.

Diameter: 12.7mm Focal Length: 15mm Coating [2600 nm to 3000 nm]: AR @ 2600 nm to 3000 nm

Zinc Selenide is a transparent yellow polycrystalline substance with a transmission range of 0.5-21µm.ZnSe lenses are usually used in collimators. Also ideal for use with high power CO2 lasers.It provides sufficient transmission in the visible region to allow the use of red collimating beams. Material: ZnSe Dimension: Dia. 12.7mm Thickness: As requested Tolerance : As requested Key Properties of ZnSe Lenses Zinc Selenide ZnSe is a transparent, yellowish polycrystalline substance which transmits in the range range 0.5-21µm. It is ideal for mid-infrared applications, but can also transmit some visible light. This means optics incorporating ZnSe lenses lend themselves to visual inspection when IR light is turned off. Absorption coefficient of Zinc Selenide is 0.0005 cm-1 at 10.6 μm. When used at infrared wavelengths,VY Optics ZnSe lenses have less than 0.3 percent total absorption, as measured using CO2 laser calorimetry. This ultra-low absorption means ZnSe lenses can reduce energy loss and increase accuracy in sensitive instrumentation: a crucial advantage for applications in laser optics where energy is focused on a very small point. Zinc Selenide has a melting point of 1525°C and a thermal conductivity is 18 W m-1 K-1 at 298K. The thermal expansion coefficient is 7.1 x 10-6 /°C at 273K. Zinc Selenide lenses exhibit a high resistance to thermal shock and can be used in thermally demanding applications. The reflectivity of Zinc Selenide is typically 29.1% at 10.6 μm (2 surfaces), and our ZnSe lenses can be AR coated for minimal energy loss. Since this is a soft material and can be easily scratched, we suggest kindly using especial care when handling your ZnSe lenses. Production of a ZnSe LensThe highest quality ZnSe blanks are those which have been chemically vapor deposited in production, and these are the blanks we use at VY Optoelectronics Co., Ltd. to craft our precision lenses. After a blank has been roughly cut to the desired size and shape, diamond turning is used to match the exact curve, roughness, and dimension specified in the design. The surface of the lens is polished to high standards. For high performance in CO2 laser focusing applications, the lenses are supplied with no coating. However, anti-reflection or other optical coatings can be applied as desired. Lenses produced at VY Optics factory are rigorously tested to ensure it fully meets your specifications as well as all applicable standards. State of the art metrology equipment is used to test for accuracy and performance. VY Optics ZnSe Lens photo display Specifications of CO2 Laser ZnSe LensSpecificaitonsDataDiameter12.7mmFocal Length15mmCoatingAR @ 2600 nm to 3000 nmDetailed Video of CO2 Laser ZnSe Lens People also askWhat is ZnSe used for? A ZnSe lens is a precision optic commonly used in thermal imaging, high power CO2 laser systems and in the life sciences. What is the name of ZnSe? Zinc Selenide (ZnSe) What is ZnSe lens? A ZnSe lens is a precision optic commonly used in thermal imaging, high power CO2 laser systems and in the life sciences. How do you make ZnSe? The ZnSe product was prepared by first dissolving 2 g of PVP in 70 mL of deionized water, followed by vigorous stirring for 2 h at 70 °C. Next, 0.4 mmol of selenium powder was dissolved in 80 mL of ethylenediamine. Want to learn more / get a quote? Just click here to contact us now~

design wavelength: 343 nm design wavelength: 355 nm effective focal length [vignetting <1%；design wavelength=343nm；tolerance±1.5%]: 338.0 mm

Sill Optics introduces an innovative telecentric f-theta lens for high-power lasers, combining perfect telecentricity with an exceptionally large scanning range and setting a new standard for laser cutting of LCD panels. Standard LCD formats are usually cost effective, whereas special formats, such as those used in aerospace or modern railway technology, pose challenges. Newly developed lenses with special aspect ratios can be expensive for small and medium production runs. Cutting standard formats without compromising quality is therefore often preferred. Key advantages of the new S4LFT3340-075 telecentric f-theta lens: Model | Wavelength | Focal Length | Aperture | Transmission | Working Distance | Beam Diameter | Weight. S4LFT3340-075 | 355nm | 340mm | 27.8mm | >91% | 471.5mm | 27.8mm | 23kg.