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N-SF5 Spherical Glass Lens 632.8nm Achromatic Doublet Lens High Dispersion

N-SF5 Spherical Glass Lens 632.8nm Achromatic Doublet Lens High Dispersion

Brand Name:STAR OPTIC
Certification:RoHS, ISO9001
Model Number:DBT-N
Minimum Order Quantity:5pcs
Delivery Time:Negotiable
Payment Terms:T/T, Western Union, Paypal
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Location: Wuhan China
Address: 4th floor, building 9, Optics Valley New Dynamic, 5th Hi-Tech road, East lake Hi-Tech Zone, Wuhan, China
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Negative Achromatic Lens, Spherical Aberration Lens

Overview:

An achromatic lens or achromat is a lens that is designed to limit the effects of chromatic and spherical aberration. Achromatic lenses are corrected to bring two wavelengths (typically red and blue) into focus on the same plane.

The most common type of achromat is the achromatic doublet, which is composed of two individual lenses made from glasses with different amounts of dispersion. Typically, one element is a negative (concave) element made out of flint glass such as F2, which has relatively high dispersion, and the other is a positive (convex) element made of crown glass such as BK7, which has lower dispersion. The lens elements are mounted next to each other, often cemented together, and shaped so that the chromatic aberration of one is counterbalanced by that of the other.


Achromatic Lenses are ideal for a range of applications, including fluorescence microscopy, image relay, inspection, or spectroscopy.


General Specifications Of Negative Achromatic Lens:

MaterialN-BK7, N-SF2, N-SF5, N-SF10, N-SF11
Design Wavelength632.8nm
Surface FlatnessN<3(0.5)@632.8nm
Surface Quality60/40 scratch-Dig
Diameter Tolerance+0/-0.2mm
Thickness Tolerance±0.2mm
Centration<3 arc minutes
Focal Length Tolerance±2%
Clear Aperture>90%
ChamferProtective<0.5mmx45°
CoatingSingle layer MgF2 coating @550nm

Standard Products Of Negative Achromatic Lens:

Part No.Material

D

(mm)

f

(mm)

R1

(mm)

R2=R3

(mm)

R4

(mm)

Tc

(mm)

Te

(mm)

NDBT12F-25N-BaF10 / N-SF1012.7-2517.7512.17109.754.65.9
NDBT12F-35N-BaF10 / N-SF1012.7-4027.8219.65201.688.59.3
NDBT25F-50N-BaF10 / N-SF1025.4-5035.5124.58217.996.69.3
NDBT25F-75N-BK7 / N-SF525.4-7546.0736.651086.68.9
NDBT25F-100N-BaF10 / N-SF1025.4-10070.5745.27412.674.65.8
NDBT25F-150N-BK7 / N-SF525.4-15092.3068.87204.156.67.7

Coating Options Of Achromatic Lens:

Star Optic offers a large variety of Achromatic Lenses. The above standard achromatic lens are coated with single layer MgF2 centered at 550nm. We have other multiple anti-reflection coating options for the Ultraviolet (UV), visible, or Infrared (IR) are available, including UV-VIS, VIS-NIR, NIR II, or SWIR. Additionally, Achromatic Lenses designed specifically for the Ultraviolet (UV) or Infrared (IR) are available, which offer superior performance when compared to a standard Achromatic Lens that has been coated for the same or comparable wavelength range.


Single Layer MgF2 CoatingMulti-layer Anti-Reflective Coating

Boradband Anti-Reflective Coating


Dual Wavelength Anti-Reflective Coating


Mounting Options For Achromatic Lens:

An Achromatic Lens, which is often designed by either cementing two elements together or mounting the two elements in a housing, creates smaller spot sizes than comparable singlet lenses. Our standard achromatic lenses are unmounted. However, we can provide fixed mount and adjustable mount for our lenses.


Fixed Lens Mount



Adjustable Lens Mount




Custom Your Own Lens:

You have your full design freedom, and we are able to work with complex designs to get you exactly what you need including optical design, mechanical design and optical coating design.


Zemax Deisgn

Zemax Deisgn


Solidworks Design


Thin Film Coating Design


China N-SF5 Spherical Glass Lens 632.8nm Achromatic Doublet Lens High Dispersion supplier

N-SF5 Spherical Glass Lens 632.8nm Achromatic Doublet Lens High Dispersion

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