Achromatic lens doublet, bi-convex lens

Material

H-K9L(Schott BK7)

Design Wavelength

632.8nm

Focal Length Tolerance

±1%

Diameter Tolerance

+0.00/-0.10mm

Thickness Tolerance

±0.1mm

Surface Accuracy

𝛌/[email protected]

Surface quality

60/40

Centration

<3arc min

Clear Aperture

>90%

Bevelling

<0.2X45°

Coating

A: BBAR Ravg < 1% From 400nm-700nm; B: BBAR Ravg < 1% From 700nm-1100nm

 

double convex lens data

 

 

The achromatic lens is far superior to that of a single lens, which is suitable for the demand for imaging and beam control needs.

For different coating, we have chosen three kinds of typical wavelengths to design lenses.

  • For 400-700 nm, we choose 486.1nm, 587.6nm, and 656.3nm;
  • For 700-1100nm, we choose 706.5nm, 855nm, and 1015nm;
  • For 1100-1650 nm, we choose 1016nm, 1330nm, and 1550nm. The focal length offset can be maintained at less than 0.5 mm within the design bandwidth.

Achromatic lens doublet, bi-convex lens, what we have manufactured

 

Item No.EFL(mm)Dia(mm) R1=-R2(mm) BFL(mm) Tc(mm) Te(mm)
GST061010.006.009.889.172.401.50
GST061212.006.0011.9611.222.301.50
GST061515.006.0015.0914.292.101.50
GST063030.006.0030.6029.401.801.50
GST091212.009.0011.7210.753.601.80
GST092020.009.0020.1219.052.801.80
GST121515.0012.7014.6113.364.701.80
GST122020.0012.7019.9218.673.901.80
GST122525.0012.7025.1623.853.401.80
GST123030.0012.7030.3728.963.101.80
GST124040.0012.7040.7339.072.801.80
GST125050.0012.7051.0649.132.601.80
GST12100100.0012.70102.6499.272.201.90
GST252525.4025.4024.5322.239.002.00
GST253030.0025.4029.5427.347.702.20
GST253535.0025.4034.8632.686.802.00
GST254040.0025.4040.1437.936.102.00
GST255050.0025.4050.6148.255.202.00
GST256060.0025.4061.0058.434.702.00
GST257575.0025.4076.5673.634.102.00
GST25100100.0025.40102.4098.813.602.00
GST25125125.0025.40128.21123.913.302.00
GST25150150.0025.40154.00148.973.102.00
GST25175175.0025.40179.79174.042.902.00
GST25200200.0025.40205.56199.072.802.00
GST25250250.0025.40257.10249.142.602.00
GST25300300.0025.40308.63299.172.502.00
GST25400400.0025.40411.66399.212.402.00
GST25500500.0025.40514.70499.242.302.00
GST25750750.0025.40772.26749.272.202.00
GST2510001000.0025.401029.81999.272.202.00
GST506060.0050.8059.2655.0414.403.00
GST507575.00050.8075.2071.0011.803.00
GST50100100.00050.80101.3896.819.503.00
GST50125125.00050.80127.38122.308.103.00

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