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  • N-BK7 Windows and H-K9L Windows

    Made from BK7 material, which has transparent range from 330-2100nm. The refractive index is 1.5168 at 587.6nm. The BK7 window has good performance over visible and near IR spectrum for most application.

  • High Precision Achromatic Waveplate

    Achromatic Waveplate Achromatic Waveplates(Retarders), AWP is composed of one piece of Crystal Quartz and one piece of Magnesium Fluoride, MgF2.

  • IR Windows Barium Fluoride BaF2 Window

    Barium fluoride (BaF2) shows good optical transmission over UV-IR windows in 0.15μm~12.5μm.

  • IR Windows Magnesium Fluoride MgF2 Windows

    MgF2 windows are used in the UV, visible and IR ranges, with approximately 94% transmission from 200 - 1000 nm, and approximately 95% transmission from 1-6µm

  • IR Windows Calcium fluoride CaF2 Windows

    CaF2 has transparent range from 170-7800nm. The refractive index is 1.399 at 5000nm. 1. Low absorption coefficient 2. High damage threshold, 3. Low Dispersion (with an Abbe Number of 95) 4. Low fluorescence 5. Excellent water, chemical, and heat resistance

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Double Concave Lens

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High Presion Double Concave Lenses and Bi-concave Lenses

Double Concave Lenses, Bi-Concave Lenses is like the Plano-Concave lenses in that they are used to produce divergent light. The Bi-Concave is best used when the input beam is converging.

1. Supported by the Zemax Optical Design Package

2. Negative Focal Length

3. Material upon requirement

  • product orgin:

    China
  • shipping port:

    Fuzhou China
  • payment:

    T/T Payment, Western Union
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High Presion Double Concave Lenses and Bi-concave Lenses


Double Concave Lenses, Bi-Concave Lenses is like the Plano-Concave lenses in that they are used to produce divergent light. The Bi-Concave is best used when the input beam is converging.

1. Supported by the Zemax Optical Design Package

2. Negative Focal Length

3. Material upon requirement



WTS offer customize Double Concave Lenses products.


Material:
 Optical glass, BK7, Fused Silica, Schott, OHARA, CaF2,Germanium etc.
Dimension Tolerance:
 ±0.1mm(Standard), ±0.01mm(High Precision)
Center Thickness Tolerance:
 ±0.1mm(Standard), ±0.02mm(High Precision)
Paraxial Focal Length:
 ±2%
Surface quality:
 60/40(Standard), 20/10(High Precision)
Clear Aperture:
 >85%
Surface Figure:
 λ/2(Standard), λ/8(High Precision) @633nm
Centration:
 3 arc minutes
Bevel:
 <0.25mm×45°
Coating:
 Upon requirement

 

Double concave lensesBi-concave Lenses


Typical Sizes
ItemNo. Diameter(mm) f(mm) R2=R2(mm) Tc(mm) Te(mm) Fb(mm)
Material N-BK7
BICV001 6 -15 15.2 2.1 1.5 14.3
BICV002 6 -30 30.83 1.79 1.5 29.42
BICV101 12.7 -15 14.65 4.89 2 13.27
BICV102 12.7 -20 20.04 4.07 2 18.62
BICV103 12.7 -25 25.35 3.62 2 23.82
BICV104 12.7 -30 30.55 3.33 2 28.89
BICV105 12.7 -40 41.02 2.99 2 39.04
BICV106 12.7 -50 51.4 2.79 2 49.08
BICV107 12.7 -75 77.45 2.52 2 74.24
BICV108 12.7 -100 103.28 2.39 2 99.16
BICV201 25.4 -25 24.72 9.02 2 22.24
BICV202 25.4 -31.7 31.55 7.34 2 29.15
BICV203 25.4 -35 35.08 6.76 2 32.66
BICV204 25.4 -50 50.93 5.22 2 48.22
BICV205 25.4 -75 77.09 4.11 2 73.63
BICV206 25.4 -100 103.04 3.57 2 98.73
BICV207 25.4 -125 129.12 3.25 2 123.92
BICV208 25.4 -150 155.1 3.04 2 149
BICV209 25.4 -175 181.13 2.89 2 174.12
BICV210 25.4 -200 207 2.78 2 199.07
BICV211 25.4 -250 258.9 2.62 2 249.12
BICV212 25.4 -300 310.8 2.52 2 299.17
BICV213 25.4 -500 518.3 2.31 2 499.21
BICV214 25.4 -1000 1037.1 2.16 2 999.32
BICV301 38 -45 44.87 10.44 2 41.46
BICV302 38 -50 49.97 10.5 3 46.4
BICV303 38 -100 102.57 6.55 3 97.78
BICV304 38 -150 154.7 5.34 3 148.23
BICV305 38 -200 206.7 4.75 3 198.46
BICV306 38 -350 362.4 4 3 348.66
BICV307 38 -500 518.1 3.7 3 498.79
BICV308 38 -700 725.6 3.5 3 698.84
BICV401 40 -63.5 64.42 8.27 1.9 60.7
BICV501 50 -100 102.06 9.2 3 96.9
BICV502 50 -150 154.27 7.1 3 147.6
BICV503 50 -200 206.28 6 3 198
BICV504 50 -250 258.22 5.4 3 248.2
BICV505 50 -400 413.87 4.5 3 398.5
BICV506 50 -450 465.73 4.3 3 448.6
BICV507 50 -500 517.58 4.2 3 448.6
BICV508 50 -600 621.28 4 3 598.7
BICV509 50 -800 828.64 3.8 3 798.7
Material Fused Silica
BICV-FS01 6 -15 14.03 1.5 2.15 15.5
BICV-FS02 6 -30 27.84 1.5 1.82 30.51
BICV-FS03 12.7 -15 14.11 2 5.02 15.67
BICV-FS04 12.7 -20 18.71 2 4.22 20.67
BICV-FS05 12.7 -25 23.32 2 3.76 25.68
BICV-FS06 12.7 -30 27.92 2 3.46 30.68
BICV-FS07 12.7 -40 37.12 2 3.09 40.68
BICV-FS08 25.4 -25 23.32 2 9.52 25.68
BICV-FS09 25.4 -35 32.52 2 7.17 35.68
BICV-FS10 25.4 -50 46.32 2 5.55 50.68
BICV-FS11 25.4 -75 69.33 2 4.35 75.69
BICV-FS12 25.4 -100 92.33 2 3.76 100.68
BICV-FS13 25.4 -150 138.34 2 3.17 150.68
BICV-FS14 25.4 -200 184.35 2 2.88 200.69
BICV-FS15 25.4 -250 230.36 2 2.7 250.69
BICV-FS16 25.4 -300 276.36 2 2.58 300.68
BICV-FS17 25.4 -500 460.4 2 2.35 500.69
BICV-FS18 25.4 -1000 920.48 2 2.18 1000.69
BICV-FS19 38 -50 46.48 3 11.12 51.02
BICV-FS20 38 -100 92.49 3 6.95 101.03
BICV-FS21 38 -150 138.5 3 5.62 151.03
BICV-FS22 38 -200 184.5 3 4.96 201.02
BICV-FS23 38 -350 322.53 3 4.13 351.03
BICV-FS24 38 -500 460.55 3 3.78 501.02
BICV-FS25 38 -750 690.59 3 3.52 751.02
BICV-FS26 38 -1000 920.64 3 3.39 1001.04
PLCX-FS27 38 300 138.04 4.31 3 297.09
PLCX-FS28 38 500 230.1 3.79 3 497.54
PLCX-FS29 38 750 345.1 3.52 3 747.68
PLCX-FS30 38 1000 460.1 3.39 3 997.73

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