Optical Componets Knowledge

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    Ion Beam Sputtered Coatings (IBS)

    VY Optoelectronics offers custom IBS coatings for laser mirrors, beam splitters, polarizers, and other precision optical components at wavelengths from 266nm to 3um. The IBS coating technique is right for complex spectral designs, high power Nd: YAG & fiber lasers, and applications where it’s critical to attenuate losses from absorption and/or scatter. Click here for absorption data taken at 1064nm (< 1.5ppm!). Typical coating types include dielectric high power high reflectors (HR), broadband high reflectors (BBHR), low-loss anti-reflection (AR), dual-band anti-reflection (DBAR), dichroic beam splitters, output couplers, low phase shift mirrors, dispersion controlled mirrors, edge filters, band-pass filters, thin-film polarizers, and non-polarizing beam splitters. We also provide IBS thin film coatings on customer-supplied substrates like windows, lenses, and turning prisms. We are often asked for AR coatings with damage thresholds of 20J or sometimes even…

    Full performance of optical H-K9L / BK7 glass

     H-K9L is the Chinese made equivalent material of N-BK7. N-BK7 is the RosH compliance material of BK7. N-BK7 is a borosilicate crown optical glass. VY Optoelectroics Co.,Ltd. produce optical elements by different optical material, H-K9L glass is the main material for our factory to manufacture lenses, we choose the best grade of H-K9L glass from the biggest and famous glass manufacturer- CDGM. H-K9L is a high quality optical glass used in lenses and other optical components where the additional benefits of Fused Silica are not required. It is a relatively hard material with extremely high homogeneity, low bubble and inclusion content. H-K9L has a low refractive index (≈1.52), low dispersion, and provides excellent transmittance through-out the visible and near infrared spectra, down to 350 nm in the ultraviolet. Its good…

    Nd: YAG Laser – Really Stand the Test of Time

    The Nd: YAG laser crystal was developed shortly after the invention of the ruby laser in the 1960s. Of all the solid-state laser crystals, it’s stood the test of your time best. Its high gain, narrow linewidth, low threshold, and physical properties make it the foremost versatile laser material for a spread of applications. The ubiquitous Nd: YAG laser has played many roles over the years. For the military, it’s provided rangefinding and target designation capabilities. When used with nonlinear optics or as a pump source for other lasers, it offers scientific users diversity in pulse width format and lasing wavelength. Other applications include medicine (dermatology and ophthalmology), materials processing (cutting, trimming, welding, and surface cleaning), and commercial instrumentation (ablation, spectroscopy, marking, nondestructive testing, and lightweight shows). Nd: YAG lasers…

    Classification of optical lenses

    Optical components fall under two basic groups: transmissions and reflectives. Transmissions include lenses, filters, windows, optical flats, prisms, polarizers, beamsplitters, wave plates, and fiber optics; reflectives include mirrors and retroreflectors. The performance of all could also be enhanced with certain substrates and thin-film coatings. Lenses are available a spread of shapes, sizes, and materials. they will be made from one piece of glass or have multiple elements; their surfaces are often spherical, aspheric, or cylindrical; they will be made up of any of several hundred common glasses or from more complex materials like fused silica or calcium fluoride. optical lens Singlets are available in several basic shapes: plano-convex, biconvex, planoconcave, biconcave, meniscus (concave/convex), and aspheric. the form that minimizes aberration in an optical system is named best-form and depends upon…

    Common Lens Formulas

    Formulas for lens focal distance, magnification, relative aperture (f/#), object-to-image distance, object-to-lens distance, lens-to-image distance, and numerical aperture.

    Choice of mirror coating

    The basic difference between the household mirror and therefore the optical mirror is that one is coated on the rear surface and the other is coated on the front. For optical applications, a front-surface mirror must be used. this suggests that the reflective surface is subject to environmental degradation, albeit it’s usually in an indoor environment and not exposed to the tough conditions of the household mirror. a crucial part of mirror technology is providing a durable front-surface mirror that’s stable and may be cleaned. A mirror’s substrate surface should be flat and smooth. The flatness is typically laid out in terms of what percentagewavelengths of sunshine the surface deviates from being an ideal plane. for several applications, the glass is often flat to a couple of wavelengths of light.…

    Common infrared optical material coating, characteristics, performance and application

    Barium Fluoride (BaF2) • Good transmission within the UV, VIS, NIR, and MW spectral regions • Hardness about half that of CaF2 • Is about 70% the mechanical strength of CaF2 • More vulnerable to thermal shock than CaF2 • Somewhat costlier than CaF2 • Not as readily available in large sizes as CaF2 • Diamond turnable • Magnetorheological finishable Transmission range Transmission is above 90 percent between 0.25 and 9.5 μm Index of refraction 1.466 @ 1.7 μm 1.455 @ 4 μm dn/dT −15.2 × 10−6/K Density: 4.89 g/cm3 Hardness (Knoop): 82 kg/mm2 Rupture modulus 3800 psi Thermal expansion coefficient: 18.1 × 10−6/°C @ 20 °C ±100 °C Typical applications Thermal imaging, astronomy, lasers Products manufactured Lenses, aspheric lenses, windows, beamsplitters, optical filters, wedges, and prisms Surface finish Polishes…

    What is a sapphire lens?

    Sapphire Windows Features Extreme Surface Hardness Chemical Resistance Transmits Wavelengths Ranging From UV to Mid-Infrared Thinner and Stronger than Standard Glass Windows Anti-Reflection Coating Options Covering 400 – 5000nm AvailableWhat are Sapphire Windows? Sapphire is a synthetically grown super hard material that is extremely durable and resistant to scratches. It second only to diamond in terms of its strength. Sapphire windows can withstand more than what quartz and conventional glass can, and at a fraction of the thickness. Sapphire crystals are “grown” in extremely hot ovens. The large, cylindrical boules are cut into sapphire rods, which are then sliced into thin discs, ground, and polished. Video Show of Sapphire Windows with diameter 45.29mm. We also produce other dimension of sapphire flats, please contact us for more information. What is a sapphire lens?…

    The scope of application of plastic optics

    The use of precision polymer optics is becoming an increasing necessity today as products demand sophisticated light handling components to achieve desired results. Polymer optics can be thought of as an important enabling technology allowing the successful development of many types of devices. Key advantages that polymer optics have over competing glass solutions include lighter weight; the ability to integrate mechanical and optical features; and the ability to reproduce aspheric, freeform, and other complex geometric surfaces. The unique nature of thermoplastics and of the injection molding process itself demands a disciplined approach during all phases of manufacturing, from component design through prototyping and finally to production. The best outcomes are achieved when the design team (usually made up of optical and mechanical designers) understands the manufacturing process and works closely…