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Optical component |
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Tel:+86-(0)591-87846955 +86-(0)591-87846952 Fax: +86-(0)591-87856157 Address:NO. 67, YangQi Road, JinShan FuWan Industrial Park, Fuzhou, FuJian, 350026, China E-mail: sales@phosctech.com Website: www.phosctech.com |
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Double-Concave Lens |
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Double-concave lens is normally used in combination with other lenses. Typical application include laser beam expanders, optical character readers, viewers, and projection systems.
Applications:
Beam Expanders
Projection Optics Systems
Optical Viewers
Optical Character Readers
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Capability:
Attribute
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Commercial
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High Precision
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Typical Material
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BK7, Fused Silica, B270, Ge, Si, CaF2
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Typical Dimension Φ (mm)
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2, 4, 6, 12.7, 25.4, 30, 38, 50.8, 95, 160
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Diameter Tolerance (mm)
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+0.00 / -0.15
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+0.00 / -0.02
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Paraxial Focal Length
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±2%
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±0.5%
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Centration (arc min)
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< 3’
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< 1’
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Surface Irregularity
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λ/4
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λ/10
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Surface Quality (Scratch / dig)
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60-40
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10-5
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Bevel (face width × 45° mm)
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0.2 - 0.5
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0.05 - 0.2
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Note:
Other size and coatings are available upon request.
Any optical materical are available upon request.
Item#
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Material
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f(mm)
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F(mm)
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R(mm)
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Tc(mm)
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Te(mm)
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Fb(mm)
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DCVL1225
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BK7
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12.7
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-25.0
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26.30
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2.0
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3.56
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-25.68
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DCVL1230
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BK7
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12.7
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-30.0
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31.48
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2.0
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3.29
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-30.67
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DCVL1240
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BK7
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12.7
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-40.0
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41.88
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2.0
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2.97
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-40.70
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DCVL1250
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BK7
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12.7
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-50.0
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52.24
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2.0
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2.78
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-50.68
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DCVL2535
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BK7
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25.4
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-35.0
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36.62
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2.0
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6.5
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-35.7
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DCVL2550
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BK7
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25.4
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-50.0
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52.17
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2.0
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5.1
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-50.7
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DCVL2575
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BK7
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25.4
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-75.0
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78.09
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2.0
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4.1
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-75.7
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DCVL25100
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BK7
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25.4
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-100.0
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104.00
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2.0
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3.6
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-100.7
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DCVL25200
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BK7
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25.4
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-200.0
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207.66
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2.0
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2.8
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-200.7
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DCVL25250
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BK7
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25.4
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-250.0
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259.49
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2.0
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2.6
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-250.7
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DCVL25300
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BK7
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25.4
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-300.0
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518.64
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2.0
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2.5
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-300.7
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DCVL25500
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BK7
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25.4
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-500.0
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259.49
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2.0
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2.3
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-500.7
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DCVL251000
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BK7
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25.4
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-1000.0
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518.64
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2.0
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2.2
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-1000.7
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DCVL38100
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BK7
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38.0
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-100.0
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104.17
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3.0
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6.5
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-100.7
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