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TECHSPEC^® components are designed, specified, or manufactured by Edmund Optics. Learn More

VIS-NIR Coated Double-Concave (DCV) Lenses

AR Coated to Provide <1.25% Reflectance per Surface for 400 - 1000nm
<0.25% Reflectance @ 880nm
Designed for 0° Angle of Incidence
Various Coating Options: Uncoated, VIS-EXT, MgF₂, VIS 0°, NIR I, and NIR II

TECHSPEC® VIS-NIR Coated Double-Concave (DCV) Lenses are designed to have two inward curved surfaces and a negative focal length similar to Plano-Concave (PCV) lenses. These lenses can be used for balancing aberrations created by other lenses within a system due to their negative spherical aberration. Double-Concave (DCV) lenses are commonly used in a variety of applications including image reduction, beam expansion and telescopes. TECHSPEC® VIS-NIR Coated Double-Concave (DCV) Lenses are optimized for transmission (>99%) in the near-infrared. These lenses are also available Uncoated, VIS-EXT, MgF₂, VIS 0°, NIR I, or with NIR II AR coating options.

Common Specifications

Bevel:

Protective bevel as needed

Coating:

VIS-NIR (400-1000nm)

Wavelength Range (nm):

400 - 1000

Coating Specification:

R_abs ≤0.25% @ 880nm
R_avg ≤1.25% @ 400 - 870nm
R_avg ≤1.25% @ 890 - 1000nm

Focal Length Tolerance (%):

±1

Surface Quality:

40-20

Products
Technical Information
Accessories
Related Products
Resources

Products

Technical Information

Accessories

Related Products

Double-Concave (DCV) Lenses

VIS-NIR Coated Plano-Concave (PCV) Lenses

Optical Cleaning

Benchtop Optical Mounts

Resources

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Anti-Reflection (AR) Coatings

Anti-reflection (AR) coatings are applied to optical components to increase throughput and reduce hazards caused by back-reflections.

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An Introduction to Optical Coatings

Optical coatings are used to influence the transmission, reflection, or polarization properties of an optical component.

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Understanding Optical Specifications

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NIR (Near Infrared)

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VIS/NIR Coating

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The Correct Material for Infrared (IR) Applications

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Infrared (IR) Spectrum

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SAG Calculator

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Future of Spherical Lenses

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UV vs. IR Grade Fused Silica

UV grade fused silica is ideal for UV and visible applications, but IR grade fused silica has better transmission in the IR due to a lack of OH- impurities.

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Hyperspectral & Multispectral Imaging – TRENDING IN OPTICS: EPISODE 7

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Edge-Blackening

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Geometrical Optics 101: Paraxial Ray Tracing Calculations

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Optics Application Examples

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Understanding Optical Lens Geometries

Optical lens geometries control light in different ways. Learn about Snell's Law of Refraction, lens terminology and geometries at Edmund Optics.

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Precision Tolerances for Spherical Lenses

Optical lenses require very precise tolerances. Learn more about tolerances for spherical lenses at Edmund Optics.

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Keys to Cost Effective Optical Design and Tolerancing

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How do I clean my lenses?

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Is it possible to find Plano-Concave (PCV) or Double Concave (DCV) lenses where the diameter is greater than the focal length?

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How does reversing the orientation of a PCX lens affect the EFL and BFL in a setup?

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Double-Concave (DCV) Lens

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Double-Convex (DCX) Lens

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Meniscus Lens

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Plano-Concave (PCV) Lens

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Plano-Convex (PCX) Lens

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Advantages of Using Meniscus Lenses in Infrared Applications

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How to Design your own Beam Expander Using Stock Optics

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Rapid Optical Prototyping

Quickly Respond to Collapsing Product Lifecycles

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Modifying Stock Optics Tip #3: Turn A Sphere Into An Asphere

Join Andrew Fisher, Manufacturing R&D Engineer at Edmund Optics, as he discusses some tips for modifying stock optical components to fit your application's needs.

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I am looking to prototype an illumination system. My objective is to use a small halogen filament bulb and end up with a beam of light. What would be the best lens or lens combination to give me this projected spot of light?

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What is the difference between the effective focal length and the back focal length?

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What are the benefits of aspheric lenses compared to standard singlet lenses?

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Back Focal Length (BFL)

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Field Curvature

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Sag

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Optical Glass

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Aberrations

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The Airy Disk and Diffraction Limit

The diffraction pattern caused when light passes through an aperture is called the Airy Disk. Find out how the Airy Disk can impact your image at Edmund Optics.

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What is the difference between an inked lens and a non-inked one?

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If I want to design with your lenses and lens assemblies, how do I get the information that I need?

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Now that I have chosen my lens, how do I mount it?

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Center Thickness (CT)

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Conjugate Distance

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Épaisseur de bord

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Irregularity

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Radius of Curvature

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The surface quality of optical components the scattering off of its surface, which is especially important in laser optics applications.

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Introduction to Basic Ray Optics

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How do I clean my optics?

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Integration of Optical Systems

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Stock and Custom Optics Manufacturing Capabilities

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Edmund Optics Global Manufacturing Facilities

Edmund Optics® (EO) manufactures millions of precision optical components and subassemblies every year in our 5 global manufacturing facilities.

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Metrology at Edmund Optics: Measuring as a Key Component of Manufacturing

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Clear Aperture (CA)

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Refraction

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