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Bi-Concave Lens |
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A biconcave lens has a negative focal length and either shrinks the image or diverges the rays.
Compared to a plano-concave lens, the power to diverge the light beam is stronger, so it is suitable for illumination systems and imaging in finite systems in combination with convex lenses.
The products shown are uncoated, but we also accept custom orders for anti-reflection
coating and other coating. Please contact us for the coating simulation
data and the pricing.
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ĦApplications |
telescope
binoculars
glasses
laser
camera
flashlight
door peephole
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| ĦSpecifications |
| Material |
B270 |
BK-7 |
| Reflactive Index |
1.523/nd |
1.51680 /nd |
| Design Wavelength |
587.6nm |
Chamfering
TChamfer*With Protective chamfering |
Dia.5 : 0.1mm
Dia.10 to Dia.100 : 0.2mm |
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| ĦTolerance |
| Diameter |
+0mm/-0.1mm |
| Center Thickness |
+/-0.2mm |
| Focal Length |
+/-2% |
| Decentering |
Within 3 minutes(3') |
| Surface Quality |
MIL60-40 |
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| P/N |
Dia. |
F.L. |
B.F.L. |
TC |
TE |
Material |
Price
without tax |
Price w/tax |
Note |
| TS-0257S |
Dia.5 |
-5 |
-5.32 |
1.00 |
2.13 |
B270 |
2,500 |
2,750 |
Please ask |
| TS-0258S |
Dia.5 |
-5 |
-5.32 |
1.00 |
2.19 |
BK-7 |
2,900 |
3,190 |
Please ask |
| TS-0258S1 |
Dia.5 |
-7.5 |
-7.82 |
1.00 |
1.78 |
BK-7 |
2,900 |
3,190 |
Please ask |
| TS-0258S2 |
Dia.5 |
-10 |
-10.33 |
1.00 |
1.56 |
BK-7 |
2,900 |
3,190 |
Please ask |
| TS-0258S3 |
Dia.5 |
-12.5 |
-12.83 |
1.00 |
1.46 |
BK-7 |
2,900 |
3,190 |
Please ask | | TS-0258S8 |
Dia.5 |
-50 |
-50.37 |
1.00 |
1.12 |
BK-7 |
2,900 |
3,190 |
Please ask |
| TS-0258S9 |
Dia.10 |
-10 |
-10.33 |
1.00 |
3.42 |
BK-7 |
3,200 |
3,520 |
Please ask |
| TS-0258S10 |
Dia.10 |
-15 |
-15.33 |
1.00 |
2.51 |
BK-7 |
3,200 |
3,520 |
Please ask |
| TS-0258S11 |
Dia.10 |
-20 |
-20.38 |
1.00 |
2.19 |
BK-7 |
3,200 |
3,520 |
Please ask |
| TS-0258S12 |
Dia.10 |
-25 |
-25.31 |
1.00 |
1.93 |
BK-7 |
3,000 |
3,300 |
Please ask |
| TS-0258S13 |
Dia.10 |
-30 |
-30.35 |
1.00 |
1.79 |
BK-7 |
3,000 |
3,300 |
Please ask |
| TS-0258S14 |
Dia.10 |
-40 |
-40.34 |
1.00 |
1.59 |
BK-7 |
3,000 |
3,300 |
Please ask |
| TS-0258S15 |
Dia.10 |
-50 |
-50.37 |
1.00 |
1.47 |
BK-7 |
3,000 |
3,300 |
Please ask |
| TS-0258S16 |
Dia.10 |
-60 |
-60.65 |
2.00 |
2.39 |
BK-7 |
3,000 |
3,300 |
Please ask |
| TS-0258S17 |
Dia.10 |
-70 |
-70.66 |
2.00 |
2.34 |
BK-7 |
3,000 |
3,300 |
Please ask |
| TS-0258S18 |
Dia.10 |
-80 |
-80.66 |
2.00 |
2.30 |
BK-7 |
3,000 |
3,300 |
Please ask |
| TS-0258S19 |
Dia.10 |
-90 |
-90.66 |
2.00 |
2.26 |
BK-7 |
3,000 |
3,300 |
Please ask |
| TS-0258S20 |
Dia.10 |
-100 |
-100.65 |
2.00 |
2.24 |
BK-7 |
3,000 |
3,300 |
Please ask |
| TS-0258S32 |
Dia.20 |
-20 |
-20.33 |
1.00 |
5.88 |
BK-7 |
3,500 |
3,850 |
Please ask |
| TS-0258S33 |
Dia.20 |
-30 |
-30.32 |
1.00 |
4.16 |
BK-7 |
3,500 |
3,850 |
Please ask |
| TS-0258S34 |
Dia.20 |
-40 |
-40.34 |
1.00 |
3.34 |
BK-7 |
3,000 |
3,300 |
Please ask |
| TS-0258S35 |
Dia.20 |
-50 |
-50.33 |
1.00 |
2.87 |
BK-7 |
3,000 |
3,300 |
Please ask |
| TS-0258S36 |
Dia.20 |
-60 |
-60.65 |
2.00 |
3.55 |
BK-7 |
3,000 |
3,300 |
Please ask |
| TS-0258S37 |
Dia.20 |
-70 |
-70.66 |
2.00 |
3.33 |
BK-7 |
3,000 |
3,300 |
Please ask |
| TS-0258S38 |
Dia.20 |
-80 |
-80.66 |
2.00 |
3.18 |
BK-7 |
3,000 |
3,300 |
Please ask |
| TS-0258S40 |
Dia.20 |
-100 |
-100.65 |
2.00 |
2.95 |
BK-7 |
3,000 |
3,300 |
Please ask |
| TS-0258S41 |
Dia.30 |
-30 |
-30.65 |
2.00 |
9.54 |
BK-7 |
4,400 |
4,840 |
Please ask |
| TS-0258S42 |
Dia.30 |
-40 |
-40.65 |
2.00 |
7.51 |
BK-7 |
4,400 |
4,840 |
Please ask |
| TS-0258S43 |
Dia.30 |
-50 |
-50.65 |
2.00 |
6.36 |
BK-7 |
4,000 |
4,400 |
Please ask |
| TS-0258S44 |
Dia.30 |
-60 |
-60.65 |
2.00 |
5.61 |
BK-7 |
4,000 |
4,400 |
Please ask |
| TS-0258S45 |
Dia.30 |
-70 |
-70.66 |
2.00 |
5.09 |
BK-7 |
4,000 |
4,400 |
Please ask |
| TS-0258S46 |
Dia.30 |
-80 |
-80.66 |
2.00 |
4.70 |
BK-7 |
4,000 |
4,400 |
Please ask |
| TS-0258S47 |
Dia.30 |
-90 |
-90.66 |
2.00 |
4.39 |
BK-7 |
4,000 |
4,400 |
Please ask |
| TS-0258S48 |
Dia.30 |
-100 |
-100.65 |
2.00 |
4.15 |
BK-7 |
4,000 |
4,400 |
Please ask |
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Q'ty of inventory for all the items are small, please ask for stock q'ty
at the time of ordering. The case there is no stock, max. lead time would
be 45 days.
*Those items are obsolete. |
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