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Bi-concave glass 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.
- Antireflection coatings can be ordered as an
option.
- Minimum Order Quantity (MOQ) ranging from 100 to 1,000 units.
General Specifications:
| Parameter |
Value |
| Default unit |
mm |
| Material |
BK7 |
| Diameter tolerance |
+0, -0.1mm |
| Focal length tolerance |
+/-1% |
| Center thickness tolerance |
+/-0.2mm |
| Centration |
3 arc min |
| Surface quality |
20-10 |
| Flange width |
0.2-0.4mm |
PN
click for more info |
Description |
EFL |
Diameter |
BFL |
Tc |
Te |
Radius |
Volume Price |
|
DVP001
|
Bi-concave lens, precision grade, D=5, EFL=-5
|
-5
|
5
|
-5.62 |
2
|
3.20 |
-5.509
|
$15.60 (MOQ Range Applies) Request Volume Quote |
|
DVP003
|
Bi-concave lens, precision grade, D=6, EFL=-8
|
-8
|
6
|
-8.60 |
2
|
2.90 |
-8.628
|
$15.80 (MOQ Range Applies) Request Volume Quote |
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DVP005
|
Bi-concave lens, precision grade, D=12, EFL=-12
|
-12
|
12
|
-12.60 |
2
|
4.80 |
-12.782
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$18 (MOQ Range Applies) Request Volume Quote |
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DVP023
|
Bi-concave lens, precision grade, D=20, EFL=-70
|
-70
|
20
|
-70.70 |
2
|
3.30 |
-72.961
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$22.20 (MOQ Range Applies) Request Volume Quote |
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DVP013
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Bi-concave lens, precision grade, D=20, EFL=-30
|
-30
|
20
|
-30.65 |
2
|
5.26 |
-31.461
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$22.20 (MOQ Range Applies) Request Volume Quote |
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DVP007
|
Bi-concave lens, precision grade, D=20, EFL=-20
|
-20
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20
|
-20.65 |
2
|
7.04 |
-21.085
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$22.20 (MOQ Range Applies) Request Volume Quote |
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DVP017
|
Bi-concave lens, precision grade, D=22.4, EFL=-40
|
-40
|
22.4
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-40.70 |
2
|
4.90 |
-41.838
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$22.80 (MOQ Range Applies) Request Volume Quote |
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DVP019
|
Bi-concave lens, precision grade, D=22.4, EFL=-50
|
-50
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22.4
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-50.65 |
2
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4.43 |
-52.211
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$22.80 (MOQ Range Applies) Request Volume Quote |
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DVP024
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Bi-concave lens, precision grade, D=30, EFL=-100
|
-100
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30
|
-100.70 |
2
|
4.10 |
-104.091
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$31.10 (MOQ Range Applies) Request Volume Quote |
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DVP018
|
Bi-concave lens, precision grade, D=30, EFL=-50
|
-50
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30
|
-50.65 |
2
|
6.40 |
-52.211
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$31.10 (MOQ Range Applies) Request Volume Quote |
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DVP015
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Bi-concave lens, precision grade, D=30, EFL=-30
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-30
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30
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-30.65 |
2
|
9.61 |
-31.461
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$31.10 (MOQ Range Applies) Request Volume Quote |
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DVP041
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Bi-concave lens, precision grade, D=42, EFL=-500
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-500
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42
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-500.66 |
2
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2.85 |
-519.061
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$45 (MOQ Range Applies) Request Volume Quote |
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