Products/Services for Achromatic Lens Products

  • Achromats-Image
    Achromats - (65 companies)
    ...of the image. An example of chromatic aberration. Image credit: ARRI. Correcting Aberration. Achromats use at least two individual lenses to correct chromatic aberration. Lens assemblies consisting of two lenses are known achromatic doublets, while those using... Search by Specification | Learn More
  • Microscope Lenses and Objectives-Image
    Microscope Lenses and Objectives - (63 companies)
    ...instead of video cameras. Other optical components for microscope lenses and objectives include contrast plates, cover slips, diaphragms, illuminators, mechanical stages, and mirrors. The objective lens is the microscope lens closes to the object. Search by Specification | Learn More
  • Optical Lens Assemblies-Image
    Optical Lens Assemblies - (144 companies)
    Optical Lens Assemblies Information. Optical lens assemblies are composed of a number of lenses mounted for a particular imaging function. These can include telecentric lenses, collimators, beam expanders, zoom lenses, etc. Optical lens assemblies... Search by Specification | Learn More
  • Optical Lenses-Image
    Optical Lenses - (446 companies)
    GlobalSpec classifies lenses into the following types. The categories are not mutually exclusive; for example, a spherical lens may also be achromatic. Spherical Lenses. Spherical lenses (or singlets) have curved surfaces which converge or diverge rays. All... Search by Specification | Learn More
  • Cylindrical Lenses-Image
    Cylindrical Lenses - (136 companies)
    Cylindrical lens have at least one surface that is formed in the shape of a cylinder. Cylindrical lenses are used to correct astigmatism in the eye, and, in rangefinders, to produce astigmatism, stretching a point of light into a line. This area... Search by Specification | Learn More
  • Fresnel Lenses - (35 companies)
    Fresnel lenses resemble a planoconvex or planoconcave lens that is cut into narrow rings and flattened. If the steps are narrow, the surface of each step is generally made conical and not spherical. How to Select Fresnel Lenses. Image credit: Knight... Search by Specification | Learn More
  • Spherical Lenses - (219 companies)
    ...10:1). Biconcave. Negative. < 5:1. Meniscus. Either; dependent upon lens. Image credit: Freewebs | Standa | Direct Industry | Play Hookey. Specifications. Wavelength Range. Spherical lenses can be designed to operate within specific ranges... Search by Specification | Learn More
  • Telescopes - (58 companies)
    Telescopes are lens assemblies designed to magnify and view distant objects. Telescopes Information. Telescopes are lens assemblies that are designed to magnify and view distant objects. Telescopes include small devices such as spotting scopes... Search by Specification | Learn More
  • Optical Prisms - (262 companies)
    ...2100 nm and an angular dispersion of 0 42 '37 ". It is relatively hard and does not scratch easily. F2 glass provides excellent chemical resistance and is often used as a second glass in achromatic lenses. It has a wavelength range of 350 nm - 2200... Search by Specification | Learn More
  • Microscopes - (704 companies)
    ...and the lens system below the stage. A confocal microscope or laser microscope uses a laser-to-light image one plane of a specimen at a time. Polarized light microscopes use two polarizers. These polarizers are perpendicular to each other so... Search by Specification | Learn More
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Therefore, achromats will have noticeable advantages over simple lenses. Achromats are far superior to simple lenses for multi-color ("white light") imaging. The two elements composing an achromatic lens (literally, "a lens with no color") are paired together for their ability to correct the color...

...printed on either transparent glass or chromium-. plano-convex BK-7 uncoated lens (lens 2) and a (typically). coated microscope slides. The chromium surface has the. 150–200 mm fl, anti-reflection coated, achromatic doublet. advantage of being reflective (reflectivity $60%), which. (lens 3). These two...

...a higher multiple of the required retardation is use to place. the thickness of the waveplate in a physically manufacturable. range. These waveplates are called multiple-order waveplates. Achromatic Waveplates. and typically have values in the neighborhood of 10 to 12. The wavelength dependence...

It occurs because lenses have a different refractive index for different wavelengths of light (the dispersion of the lens). The refractive index decreases with increasing wavelength. The aim of a good optical design is to reduce or eliminate this effect completely. An achromatic lens or achromat is a lens...

...such as Bestforms. Whether correc-. tion over larger apertures, several wavelengths or a. Achromatic Objectives. wider field is needed, it may be necessary to use multi-. An advantage of additional lens elements is the ability to. element lens objective. combine lenses of different materials and optical...

...such as Bestforms. Whether correc-. tion over larger apertures, several wavelengths or a. Achromatic Objectives. wider field is needed, it may be necessary to use multi-. An advantage of additional lens elements is the ability to. element lens objective. combine lenses of different materials and optical...

...and near infrared lasers). Achromatic lens: A usually two-element lens that is corrected for chromatic aberration to bring two specified or distinct wavelengths to a common focal point. Active medium: Collection of atoms capable of undergoing stimulated emission at a given wavelength. Afocal: Literally...

...at 360nm. The fluorescent emission was collected by the 2:1 demagnification lens. pair whose function was to fit the whole sample into the field of view (FOV). An achromatic lens (f = 100mm). collimated the incident light on to the volume hologram. The hologram diffracted light according to the Bragg...

...into a single lens, either spherical or aspherical, their focal distances are different, often called chromatic aberration. Achromatic doublets are frequently used to reduce the effect. SINGLEMODE OR MULTIMODE: Singlemode fibers produce almost mathematically perfect Gaussian beams. A collimated Gaussian beam...

) Extremely compact design. 3) Achromatic over a wide range. 4) Fixed spatial interference pattern results in fast processing. 5) Single-frame data acquisition. 2. MEASUREMENT TECHNIQUE. 2.1 Simultaneous phase-shift measurement. At the heart of the speckle interferometer is a new spatial...

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