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Achromatic Lenses with AR coating at visible range
Broadband AR Coated Achromatic Lenses(Doublet Lenses)

Broadband AR Coated Achromatic Lenses(Doublet Lenses)

Achromatic Lenses are used to minimize or eliminate chromatic aberration. The achromatic design also helps minimize spherical aberrations. Achromatic Lenses are ideal for a range of applications, including fluorescence microscopy, image relay, inspection, or spectroscopy. Achromatic Lenses, which are often designed by either cementing two elements together or mounting the two elements in a housing, create smaller spot sizes than comparable singlet lenses.

  • product origin:

    China

  • shipping port:

    Fuzhou China

  • lead time:

    4 working weeks

  • payment:

    T/T Payment, Western Union
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  • description

1. What do you mean by achromatic combination?


An achromatic lens can be defined as a lens which is made by acombination 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.


2. What are achromatic lenses used for?


Achromatic Lenses are used to minimize or eliminate chromatic aberration. The achromatic design also helps minimize spherical aberrations. Achromatic Lenses are ideal for a range of applications, including fluorescence microscopy, image relay, inspection, or spectroscopy.


3. What can we do for you ?


Achromatic Lenses

Cemented Achromatic Doublets
Cemented Achromatic Triplets
Achromatic Doublet Pairs
Negative Achromatic Lenses
Achromatic Cylindrical Lenses
Near UV Achromatic Lenses
Near-IR (NIR) Achromatic Lenses 
UV-to-NIR Corrected Triplets



Specification


Material:

 Crown Glass&Flint Glass CDGM, Schott, Ohara etc
Dimension Tolerance:
  ±0.1mm(Standard), ±0.01mm(High Precision)
Center Thickness Tolerance:
  ±0.1mm(Standard), ±0.05mm(High Precision)
Paraxial Focal Length:
  ±2%
Surface quality:
  60/40(Standard), 20/10(High Precision)
Clear Aperture:
  >85%
Surface Figure:
  λ/2(Standard), λ/4(High Precision) @633nm
Centration:
  3 arc minutes
Bevel:
  <0.25mm×45°
Coating:
 Upon requirement


Part No. F(mm) Φ
(mm) 		Nd A Nd B R1
(mm) 		R2=R3
(mm) 		R4
(mm) 		Tc1
(mm) 		Tc2
(mm) 		Fb
(mm)
ULAC020006 20 6 BK7 SF5 12.36 -8.51 -24.38 2.6 1.0 18.29
ULAC025006 25 6 BK7 SF5 15.7 -10.66 -29.99 2.3 1.0 23.45
ULAC030006 30 6 BK7 SF5 18.88 -12.94 -34.68 1.9 1.0 28.69
ULAC025008 25 8 BK7 SF5 15.6 -10.81 -30.48 2.9 1.0 23.12
ULAC030008 30 8 BK7 SF5 18.88 -12.88 -36.22 2.7 1.0 28.27
ULAC025127 25 12.7 BK7 SF5 15.6 -11.40 -31.05 4.3 1.3 22.25
ULAC030127 30 12.7 BK7 SF5 18.53 -13.49 -37.84 4.0 1.3 27.36
ULAC040127 40 12.7 BK7 SF5 25.23 -17.54 -48.75 3.4 1.3 37.77
ULAC050127 50 12.7 BK7 SF5 31.26 -21.93 -62.37 3.1 1.3 47.99
ULAC075127 75 12.7 BK7 SF5 46.77 -32.96 -94.62 2.6 1.3 73.23
ULAC040018 40 18 BK7 SF5 24.27 -18.35 -53.09 5.4 1.5 36.51
ULAC050018 50 18 BK7 SF5 31.69 -22.00 -60.57 4.8 1.5 46.98
ULAC060018 60 18 BK7 SF5 37.84 -26.49 -73.79 4.1 1.5 57.3
ULAC080018 80 18 BK7 SF5 49.55 -36.81 -165.58 3.4 1.5 77.41
ULAC060254 60 25.4 BK7 SK5 37.33 -27.16 -75.86 7.0 2.0 55.56
ULAC120254 120 25.4 BK7 SF5 73.28 -54.33 -159.96 4.2 2.0 117.1
ULAC025127N -25 12.7 BK7 F2 -15.6 13.09 44.16 3.0 2.7 27.5
ULAC050254N -50 25.4 BK7 F2 -31.19 24.89 85.31 3.0 4.2 53.3


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Metallic Coated Mirrors
N-BK7 metallic coated mirror

1、What Metallic Coated types can Uni-Optics supply?


Uni-Optics mainly offers four coating types, including:

1) UV Enhanced Aluminum : Ravg > 85% from 250nm to 400nm

2) Protected Aluminum: Ravg > 87% from 400nm to 800nm

3) Protected Silver: Ravg > 95% from 400nm to 20um

4) Protected Gold: Ravg > 98% from 650nm to 16um



2、What are the features of Metallic coated mirror?


Metallic coated mirror have many key features below:

Wide spectral range

Not sensitive to the incidence angle and polarization state

Low cost

Non-durable

Relatively low reflectance

Low laser damage threshold


3、What UNI Optics can do for you?


Common Specifications:

Substrate Materials: N-BK7, Fused silica, Pyrex；Float glass

Dimensional tolerance: +/-0.1mm

Surface quality:  60-40

Parallelism:  3’

Flatness: λ/4 per 25mm@633nm

Bevel: Protective

One surface: Polished and Metallic coating

The other surface: Fine ground


Note: Aluminum is the most widely used metal reflection film, from near UV to near IR, have high reflectivity, and with low cost. Silver has higher reflectivity in the visible and near infrared wavelength than the aluminum film, but the silver in the air will be rapid oxidation, color darkening, makes the film performance and firmness declined rapidly. Gold film has a good consistency with high reflectivity in the near, middle and far infrared range, can control the thermal radiation effectively, but it is relatively soft, easy bruising, and should be paid very close attention to clean, and the cost is very high.




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