Please contact our sales team.
For a quote on your custom requirements please send us your drawing or specification.
Bi-Concave Lenses
Bi-concave lens has concave lenses on both sides, similar to a plano-concave lens, and is a lens with a negative focal length. Diffusing parallel incident light outward, biconcave lenses have equal radii of curvature on both sides, and they are used to diffuse incident light or to increase the focal length of an existing optical system.
The image created by a biconcave lens is always a smaller, upright, virtual image of the object, so biconcave lenses are mainly used to correct myopia. In addition, they can be used in beam expanding and projection systems.
CLZ Optical Co., Ltd. stocks Bi-Concave Lenses ranging from 10mm to 250mm in diameter with a full range of focal lengths to meet your needs. We can also customize optical components to meet your requirements using a variety of optical materials, such as optical glass, fused silica, silicon.
CUSTOM COATING OPTIONS >
CUSTOM OPTIONS >
EDGING & BLACKEN OPTION >
CUSTOMIZED PROCESSING CAPABILITY >
Single layer magnesium fluoride coating
Broadband anti-reflection (BBAR)
Single wavelength AR coating (V-coating)
Dual-band AR coating (W-coating)
Materials: Optical Glass, Fused Silica and Silicon
Dimensions: Diameters 10mm to 250mm
Edge Finish: Blackened
Surfaces: 80-50 to 20-10 Scratch dig
Centration: To 30 seconds
Irregularity: To 1/10 waves
Coating Options: Single & multi layer AR coatings
We can modifying diameter of lenses and blacking edge in stock optics to meet your requriments.
This can achieve:
The stock optics diameter from large to small and tighter diameter tolerance.
Coated Area is a continuous coating extending to the edges of the optical component. (Edge after coating)
Edge-blackened lenses, or inked lenses, minimize the stray light within an optical system.
We can customize spherical lenses for customers according to their specific needs. The following are our customized processing capabilities for spherical lenses&Production equipment and measuring instruments:
Parameter | Processing Capabilities | Metrology Equipment |
Diameter | 10mm - 260mm | High-Accuracy Digital Micrometer |
Radius | λ/2 @632.8nm | ZYGO Verifire Laser Interferometer |
Surface accuracy | λ/10 @632.8nm | ZYGO Verifire Laser Interferometer |
Focal Length | ±0.5% | Digital focal length measuring instrument |
Centration | <30 arcsec | Digital centration measuring instrument |
Surface Quality | 10-5 | Scratch-Dig Visual Comparison Board |
Coating | Broadband AR Coating | Agilent Cary 5000 Spectrophotometer |
Please contact us for discount pricing for stock parts over 10+ and volume/OEM quantities
| Type No. | Data sheet | Material | Diameter (mm) | Coating | EFL (mm) | CT (mm) | |
|---|---|---|---|---|---|---|---|
| L‐DC006015076Z | PDF > | BK7 or equivalent | 75.00 | BBAR Ravg<0.5% AT 750-1500nm | -150.00 | 2.50 | |
| L‐DC0060150075 | PDF > | BK7 or equivalent | 75.00 | BBAR Ravg<0.5% AT 750-1500nm | -150.00 | 2.50 | |
| L-DC0061000050 | PDF > | BK7 or equivalent | 50.00 | BBAR Ravg<0.5% AT 750-1500nm | -1000.00 | 2.50 | |
| L-DC0060600050 | PDF > | BK7 or equivalent | 50.00 | BBAR Ravg<0.5% AT 750-1500nm | -600.00 | 2.00 | |
| L-DC0060200038 | PDF > | BK7 or equivalent | 38.00 | BBAR Ravg<0.5% AT 750-1500nm | -200.00 | 2.00 | |
| L-DC0060200030 | PDF > | BK7 or equivalent | 30.00 | BBAR Ravg<0.5% AT 750-1500nm | -200.00 | 2.00 | |
| L-DC0060400025 | PDF > | BK7 or equivalent | 25.00 | BBAR Ravg<0.5% AT 750-1500nm | -400.00 | 1.50 | |
| L‐DC006007512Z | PDF > | BK7 or equivalent | 12.70 | BBAR Ravg<0.5% AT 750-1500nm | -75.00 | 2.50 | |
| L‐DC005015076Z | PDF > | BK7 or equivalent | 76.20 | BBAR Ravg<0.5% AT 630-1100nm | -150.00 | 2.50 | |
| L‐DC0050150075 | PDF > | BK7 or equivalent | 75.00 | BBAR Ravg<0.5% AT 630-1100nm | -150.00 | 2.50 | |
| L-DC0051000050 | PDF > | BK7 or equivalent | 50.00 | BBAR Ravg<0.5% AT 630-1100nm | -1000.00 | 2.50 | |
| L-DC0050600050 | PDF > | BK7 or equivalent | 50.00 | BBAR Ravg<0.5% AT 630-1100nm | -600.00 | 2.00 | |
| L-DC0050200038 | PDF > | BK7 or equivalent | 38.00 | BBAR Ravg<0.5% AT 630-1100nm | -200.00 | 2.00 | |
| L-DC0050200030 | PDF > | BK7 or equivalent | 30.00 | BBAR Ravg<0.5% AT 630-1100nm | -200.00 | 2.00 | |
| L-DC0050400025 | PDF > | BK7 or equivalent | 25.00 | BBAR Ravg<0.5% AT 630-1100nm | -400.00 | 1.50 | |
| L‐DC005007512Z | PDF > | BK7 or equivalent | 12.70 | BBAR Ravg<0.5% AT 630-1100nm | -75.00 | 2.50 | |
| L‐DC004015076Z | PDF > | BK7 or equivalent | 76.20 | BBAR Ravg<0.8% AT 400-900nm | -150.00 | 2.50 | |
| L‐DC0040150075 | PDF > | BK7 or equivalent | 75.00 | BBAR Ravg<0.8% AT 400-900nm | -150.00 | 2.50 | |
| L-DC0041000050 | PDF > | BK7 or equivalent | 50.00 | BBAR Ravg<0.8% AT 400-900nm | -1000.00 | 2.50 | |
| L-DC0040600050 | PDF > | BK7 or equivalent | 50.00 | BBAR Ravg<0.8% AT 400-900nm | -600.00 | 2.00 | |
| L-DC0040200038 | PDF > | BK7 or equivalent | 38.00 | BBAR Ravg<0.8% AT 400-900nm | -200.00 | 2.00 | |
| L-DC0040200030 | PDF > | BK7 or equivalent | 30.00 | BBAR Ravg<0.8% AT 400-900nm | -200.00 | 2.00 | |
| L-DC0040400025 | PDF > | BK7 or equivalent | 25.00 | BBAR Ravg<0.8% AT 400-900nm | -400.00 | 1.50 | |
| L‐DC004007512Z | PDF > | BK7 or equivalent | 12.70 | BBAR Ravg<0.8% AT 400-900nm | -75.00 | 2.50 | |
| L‐DC003015076Z | PDF > | BK7 or equivalent | 76.20 | BBAR Ravg<0.35% AT 420-680nm | -150.00 | 2.50 | |
| L‐DC0030150075 | PDF > | BK7 or equivalent | 75.00 | BBAR Ravg<0.35% AT 420-680nm | -150.00 | 2.50 | |
| L-DC0031000050 | PDF > | BK7 or equivalent | 50.00 | BBAR Ravg<0.35% AT 420-680nm | -1000.00 | 2.50 | |
| L-DC0030600050 | PDF > | BK7 or equivalent | 50.00 | BBAR Ravg<0.35% AT 420-680nm | -600.00 | 2.00 | |
| L-DC0030200038 | PDF > | BK7 or equivalent | 38.00 | BBAR Ravg<0.35% AT 420-680nm | -200.00 | 2.00 | |
| L-DC0030200030 | PDF > | BK7 or equivalent | 30.00 | BBAR Ravg<0.35% AT 420-680nm | -200.00 | 2.00 | |
| L-DC0030400025 | PDF > | BK7 or equivalent | 25.00 | BBAR Ravg<0.35% AT 420-680nm | -400.00 | 1.50 | |
| L‐DC003007512Z | PDF > | BK7 or equivalent | 12.70 | BBAR Ravg<0.35% AT 420-680nm | -75.00 | 2.50 | |
| L‐DC002015076Z | PDF > | BK7 or equivalent | 76.20 | MgF2 AT 550nm | -150.00 | 2.50 | |
| L‐DC0020150075 | PDF > | BK7 or equivalent | 75.00 | MgF2 AT 550nm | -150.00 | 2.50 | |
| L-DC0021000050 | PDF > | BK7 or equivalent | 50.00 | MgF2 AT 550nm | -1000.00 | 2.50 | |
| L-DC0020600050 | PDF > | BK7 or equivalent | 50.00 | MgF2 AT 550nm | -600.00 | 2.00 | |
| L-DC0020200038 | PDF > | BK7 or equivalent | 38.00 | MgF2 AT 550nm | -200.00 | 2.00 | |
| L-DC0020200030 | PDF > | BK7 or equivalent | 30.00 | MgF2 AT 550nm | -200.00 | 2.00 | |
| L-DC0020400025 | PDF > | BK7 or equivalent | 25.00 | MgF2 AT 550nm | -400.00 | 1.50 | |
| L‐DC002007512Z | PDF > | BK7 or equivalent | 12.70 | MgF2 AT 550nm | -75.00 | 2.50 | |
| L‐DC001015076Z | PDF > | BK7 or equivalent | 76.20 | Uncoated | -150.00 | 2.50 | |
| L‐DC0010150075 | PDF > | BK7 or equivalent | 75.00 | Uncoated | -150.00 | 2.50 | |
| L-DC0011000050 | PDF > | BK7 or equivalent | 50.00 | Uncoated | -1000.00 | 2.50 | |
| L-DC0010600050 | PDF > | BK7 or equivalent | 50.00 | Uncoated | -600.00 | 2.00 | |
| L-DC0010200038 | PDF > | BK7 or equivalent | 38.00 | Uncoated | -200.00 | 2.00 | |
| L-DC0010200030 | PDF > | BK7 or equivalent | 30.00 | Uncoated | -200.00 | 2.00 | |
| L-DC0010400025 | PDF > | BK7 or equivalent | 25.00 | Uncoated | -400.00 | 1.50 | |
| L-DC001007512Z | PDF > | BK7 or equivalent | 12.70 | Uncoated | -75.00 | 2.50 |
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