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Commander Group Ltd.

Lens, Bi-Convex Lenses, Projection Lens manufacturer / supplier in China, offering Optical Bk7 Double Convex Lens for Beam Expanders, 64mm Prism System with Three Prism, Optical Meniscus Lens for Optical View Finder and so on.

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Optical Bk7 Double Convex Lens for Beam Expanders

FOB Price: US $30 / Piece
Min. Order: 200 Pieces
Min. Order FOB Price
200 Pieces US $30/ 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.: BCX-519
  • 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: Convex 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 BK7 Double Convex Lens for Beam Expanders


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

Applications:
1: 1 imaging and in multi-element system, Magnifiers, Objectives, Condensing systems, Projection Systems, Imaging Systems, Optical Display Systems, Laser Measurement Systems, Beam Expanders, Optical Viewers, Optical Character Readers, etc.

Description:
Double convex (DCX) or Biconvex lenses are symmetrical therefore they have equal radii of curvature on both sides. Biconvex lenses are used as magnifiers, objectives, condensing systems. Since both surfaces contribute to the power of biconvex lenses, they have shorter focal length than PCX lenses of equal diameter and surface radius.

Double Convex Lenses are used in image relay applications, or for imaging objects at close conjugates. Double Convex Lenses have positive focal lengths, along with two convex surfaces with equal radii. Aberrations will increase as the conjugate ratios increase. DCV Lenses are used in a range of industries or applications.

Double-Convex Lenses are most suitable where the object and image are on opposite sides of the lens and the ratio of the image and object (conjugate ratio) distances is between 0.2 to 5mm.

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.

Specifications:
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
BCX-001 6 15 15.2 2.1 1.5 14.3
BCX-002 6 30 30.83 1.79 1.5 29.42
BCX-101 12.7 15 14.65 4.89 2 13.27
BCX-102 12.7 20 20.04 4.07 2 18.62
BCX-103 12.7 25 25.35 3.62 2 23.82
BCX-104 12.7 30 30.55 3.33 2 28.89
BCX-105 12.7 40 41.02 2.99 2 39.04
BCX-106 12.7 50 51.4 2.79 2 49.08
BCX-107 12.7 75 77.45 2.52 2 74.24
BCX-108 12.7 100 103.28 2.39 2 99.16
BCX-201 25.4 25 24.72 9.02 2 22.24
BCX-202 25.4 31.7 31.55 7.34 2 29.15
BCX-203 25.4 35 35.08 6.76 2 32.66
BCX-204 25.4 50 50.93 5.22 2 48.22
BCX-205 25.4 75 77.09 4.11 2 73.63
BCX-206 25.4 100 103.04 3.57 2 98.73
BCX-207 25.4 125 129.12 3.25 2 123.92
BCX-208 25.4 150 155.1 3.04 2 149
BCX-209 25.4 175 181.13 2.89 2 174.12
BCX-210 25.4 200 207 2.78 2 199.07
BCX-211 25.4 250 258.9 2.62 2 249.12
BCX-212 25.4 300 310.8 2.52 2 299.17
BCX-213 25.4 500 518.3 2.31 2 499.21
BCX-214 25.4 1000 1037.1 2.16 2 999.32
BCX-301 30 50 50.7 6.54 2 47.77
BCX-302 30 500 518.3 2.43 2 499.19
BCX-401 38 45 44.87 10.44 2 41.46
BCX-402 38 50 49.97 10.5 3 46.4
BCX-403 38 100 102.57 6.55 3 97.78
BCX-404 38 150 154.7 5.34 3 148.23
BCX-405 38 200 206.7 4.75 3 198.46
BCX-406 38 350 362.4 4 3 348.66
BCX-407 38 500 518.1 3.7 3 498.79
BCX-408 38 700 725.6 3.5 3 698.84
BCX-409 40 63.5 64.42 8.27 1.9 60.7
BCX-501 50 100 102.06 9.2 3 96.9
BCX-502 50 150 154.27 7.1 3 147.6
BCX-503 50 200 206.28 6 3 198
BCX-504 50 250 258.22 5.4 3 248.2
BCX-505 50 400 413.87 4.5 3 398.5
BCX-506 50 450 465.73 4.3 3 448.6
BCX-507 50 500 517.58 4.2 3 448.6
BCX-508 50 600 621.28 4 3 598.7
BCX-509 50 800 828.64 3.8 3 798.7

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