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Commander Group Ltd.

Lens, Double-Concave Lens, Projection Lens manufacturer / supplier in China, offering Optical Double Concave Laser Beam Expanders Lens, 64mm Prism System with Three Prism, Optical Meniscus Lens for Optical View Finder and so on.

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Optical Double Concave Laser Beam Expanders Lens

FOB Price: US $36 / Piece
Min. Order: 200 Pieces
Min. Order FOB Price
200 Pieces US $36/ Piece
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Production Capacity: 30, 000 PCS/ Month
Transport Package: Standard Export Carton
Payment Terms: L/C, T/T, Paypal, Western Union

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Basic Info
  • Model NO.: BCV-602
  • Shape: Single-lens
  • Optical Glass: Bk7, Fused Silica, Sf10, CaF2, Sapphire .etc.
  • Dimension Tolerance: 0.2(General). 0.05(High Precision)
  • Irr: 1/4lambda(General), 1/10lambda(High Precision)
  • Surface Figure: <1.5lambda(General), <1/4lambda(High Precision)
  • Coating: Uncaoted, Ar, Pr, Hr, etc.
  • Specification: SGS
  • HS Code: 9001909090
  • Type: Concave Lens
  • Material: Optical Glass
  • Paraxial Focal Length Tolerance: +2%/-2%
  • Centration: <3 Arc Min
  • Clear Aperture: >80%(Small Size), >95%(Laege Size)
  • Bevel: <0.25mm
  • Customization: Yes
  • Origin: Jiangsu, China
Product Description
Optical Double Concave Laser beam expanders Lens

Features:
High Precision Dimension Control, Optional Substrate Material, Diverges incident light Lower spherical aberrations than for Plano-Concave lenses, Ideal for Experimenting and Prototyping Applications

Applications:
Image Reduction and to Spread Light, Laser beam expanders, Optical character readers, Optical Viewers, Projection Systems, Imaging Systems, Laser Measurement Systems.

Description:
A double-concave lens is compose of two concave surface, has a negative focal length and are best used to diverge a converging beam. Similar to a plano-concave lens, a bi-concave lens can diverge a collimated beam to a virtual focus like a beam expander.

Double concave (DCV) or Biconcave lenses are symmetrical with equal radii of curvature on both sides. The biconcave lenses are used in optical systems in combination with other lenses. These lenses also work as beam expanders, optical character readers, viewers and projection systems.

With its two concaves surface, the biconcave lens refracts light efficiently in a small space and spread widely the light.
Possible to use it for enlarging the illumination area.

Double Concave Lenses are used in beam expansion, image reduction, or light projection applications. These lenses are also ideal for expanding the focal length of an optical system. Double Concave Lenses, which have two concave surfaces, are Optical Lenses with negative focal lengths.

Specification:
Material: BK7, Fused Silica, SF10, CaF2, Sapphire. Etc.
Paraxial Focal Length Tolerance: ± 2%
Dimension Tolerance: ± 0.2(General). ± 0.05(High Precision)
Centration: <3 arc min
IRR: λ /4@633nm(General), λ /10@633nm(High Precision)
Clear Aperture: >80%(Small Size), >95%(Laege Size)
Surface Figure: <1.5λ @633nm(General), <λ /4@633nm(High Precision)
Surface Quality: 60/40(General), 10/5(High Precision)
Bevel: <0.25mm
Coating: Uncaoted, AR, PR, HR, etc.
Item# Φ(mm) f(mm) R2=R2(mm) Tc Te Fb
BCV-001 6 -15 15.2 2.1 1.5 14.3
BCV-002 6 -30 30.83 1.79 1.5 29.42
BCV-101 12.7 -15 14.65 4.89 2 13.27
BCV-102 12.7 -20 20.04 4.07 2 18.62
BCV-103 12.7 -25 25.35 3.62 2 23.82
BCV-104 12.7 -30 30.55 3.33 2 28.89
BCV-105 12.7 -40 41.02 2.99 2 39.04
BCV-106 12.7 -50 51.4 2.79 2 49.08
BCV-107 12.7 -75 77.45 2.52 2 74.24
BCV-108 12.7 -100 103.28 2.39 2 99.16
BCV-201 25.4 -25 24.72 9.02 2 22.24
BCV-202 25.4 -31.7 31.55 7.34 2 29.15
BCV-203 25.4 -35 35.08 6.76 2 32.66
BCV-204 25.4 -50 50.93 5.22 2 48.22
BCV-205 25.4 -75 77.09 4.11 2 73.63
BCV-206 25.4 -100 103.04 3.57 2 98.73
BCV-207 25.4 -125 129.12 3.25 2 123.92
BCV-208 25.4 -150 155.1 3.04 2 149
BCV-209 25.4 -175 181.13 2.89 2 174.12
BCV-210 25.4 -200 207 2.78 2 199.07
BCV-211 25.4 -250 258.9 2.62 2 249.12
BCV-212 25.4 -300 310.8 2.52 2 299.17
BCV-213 25.4 -500 518.3 2.31 2 499.21
BCV-214 25.4 -1000 1037.1 2.16 2 999.32
BCV-301 38 -45 44.87 10.44 2 41.46
BCV-302 38 -50 49.97 10.5 3 46.4
BCV-303 38 -100 102.57 6.55 3 97.78
BCV-304 38 -150 154.7 5.34 3 148.23
BCV-305 38 -200 206.7 4.75 3 198.46
BCV-306 38 -350 362.4 4 3 348.66
BCV-307 38 -500 518.1 3.7 3 498.79
BCV-308 38 -700 725.6 3.5 3 698.84
BCV-309 40 -63.5 64.42 8.27 1.9 60.7
BCV-501 50 -100 102.06 9.2 3 96.9
BCV-502 50 -150 154.27 7.1 3 147.6
BCV-503 50 -200 206.28 6 3 198
BCV-504 50 -250 258.22 5.4 3 248.2
BCV-505 50 -400 413.87 4.5 3 398.5
BCV-506 50 -450 465.73 4.3 3 448.6
BCV-507 50 -500 517.58 4.2 3 448.6
BCV-508 50 -600 621.28 4 3 598.7
BCV-509 50 -800 828.64 3.8 3 798.7

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