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  • Product Details
Double Concave Lenses
Double Concave Lenses are manufactured with both surfaces concave. These lenses have negative focal lengths. These lenses diverge collimated incident light and form virtual images, which are seen through the lens. They are often used to expand light or increase focal lengths in existing systems. They are used in laser beam expanders, optical character readers, viewers, and projection systems. We will provide precision grade double concave Lenses with tighter manufacturing tolerances.


FAQ


  • Q
    Do you produce standard products or customized?
    Mostly customized, we can produce your elements according to your drawing with detailed specifications.
  • Q
    What is your Min. and Max. dimension for spherical lenses?
    Min. D2mm, Max. D200mm.
  • Q
    What is your high precision?
    Surface quality 10-5, Flatness L/10, centration 30 arc sec, parallelism 1arc sec, angle tolerance 3arc sec.
  • Q
    What is your MOQ?
    Generally no MOQ, from prototype to volume quantity, we support both.
  • Q
    What is the delivery time for CRYLIGHT?
    Generally 4 weeks, for urgent parts we will help expedite. For complex products, we will confirm accordingly.
  • Q
    What payment methods do you accept?
    We accept T/T bank transfer and credit card payment.
    100% prepayment for new client and net 30 days for old customers.
PRODUCT FEATURES


The Double Concave Lenses are made from BK7 material, which are manufactured with both surfaces concave. These lenses have negative focal lengths. These lenses diverge collimated incident light and form virtual images


                   

01


which are seen through the lens. They are often used to expand light or increase focal lengths in existing systems. They are used in laser beam expanders
                   
                   

02


optical character readers, viewers, and projection systems. We will provide precision grade Double Concave Lenses with tighter manufacturing tolerances.
                   



PRODUCT PARAMETERS


Double Concave Lens -BK7


Item#φ(mm)f(mm)R2=R2(mm)TcTeFb
BCV1-0016.0-15.015.202.101.514.30
BCV1-0026.0-30.030.831.791.529.42
BCV1-10112.7-15.014.654.892.013.27
BCV1-10212.7-20.020.044.072.018.62
BCV1-10312.7-25.025.353.622.023.82
BCV1-10412.7-30.030.553.332.028.89
BCV1-10512.7-40.041.022.992.039.04
BCV1-10612.7-50.051.402.792.049.08
BCV1-10712.7-75.077.452.522.074.24
BCV1-10812.7-100.0103.282.392.099.16
BCV1-20125.4-25.024.729.022.022.24
BCV1-20225.4-31.731.557.342.029.15
BCV1-20325.4-35.035.086.762.032.66
BCV1-20425.4-50.050.935.222.048.22
BCV1-20525.4-75.077.094.112.073.63
BCV1-20625.4-100.0103.043.572.098.73
BCV1-20725.4-125.0129.123.252.0123.92
BCV1-20825.4-150.0155.103.042.0149.00
BCV1-20925.4-175.0181.132.892.0174.12
BCV1-21025.4-200.0207.002.782.0199.07
BCV1-21125.4-250.0258.902.622.0249.12
BCV1-21225.4-300.0310.802.522.0299.17
BCV1-21325.4-500.0518.302.312.0499.21
BCV1-21425.4-1000.01037.102.162.0999.32
BCV1-30138.0-45.044.8710.442.041.46
BCV1-30238.0-50.049.9710.503.046.40
BCV1-30338.0-100.0102.576.553.097.78
BCV1-30438.0-150.0154.705.343.0148.23
BCV1-30538.0-200.0206.704.753.0198.46
BCV1-30638.0-350.0362.404.003.0348.66
BCV1-30738.0-500.0518.103.703.0498.79
BCV1-30838.0-700.0725.603.503.0698.84
BCV1-30940.0-63.564.428.271.960.70
BCV1-50150.0-100.0102.069.203.096.90
BCV1-50250.0-150.0154.277.103.0147.60
BCV1-50350.0-200.0206.286.003.0198.00
BCV1-50450.0-250.0258.225.403.0248.20
BCV1-50550.0-400.0413.874.503.0398.50
BCV1-50650.0-450.0465.734.303.0448.60
BCV1-50750.0-500.0517.584.203.0448.60
BCV1-50850.0-600.0621.284.003.0598.70
BCV1-50950.0-800.0828.643.83.0798.70


Double Concave Lens - Fused Silica



 

Item#mmf(mm)R2=R2(mm)TcTeFb
BCV2-0016.0-15.014.031.52.1515.50
BCV2-0026.0-30.027.841.51.8230.51
BCV2-10112.7-15.014.112.05.0215.67
BCV2-10212.7-20.018.712.04.2220.67
BCV2-10312.7-25.023.322.03.7625.68
BCV2-10412.7-30.027.922.03.4630.68
BCV2-10512.7-40.037.122.03.0940.68
BCV2-20125.4-25.023.322.09.5225.68
BCV2-20225.4-35.032.522.07.1735.68
BCV2-20325.4-50.046.322.05.5550.68
BCV2-20425.4-75.069.332.04.3575.69
BCV2-20525.4-100.092.332.03.76100.68
BCV2-20625.4-150.0138.342.03.17150.68
BCV2-20725.4-200.0184.352.02.88200.69
BCV2-20825.4-250.0230.362.02.70250.69
BCV2-20925.4-300.0276.362.02.58300.68
BCV2-21025.4-500.0460.402.02.35500.69
BCV2-21125.4-1000.0920.482.02.181000.69
BCV2-30138.0-50.046.483.011.1251.02
BCV2-30238.0-100.092.493.06.95101.03
BCV2-30338.0-150.0138.503.05.62151.03
BCV2-30438.0-200.0184.503.04.96201.02
BCV2-30538.0-350.0322.533.04.13351.03
BCV2-30638.0-500.0460.553.03.78501.02
BCV2-30738.0-750.0690.593.03.52751.02
BCV2-30838.0-1000.0920.643.03.391001.04
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