Overview: Double-Concave (DCV) Lens, also referred to as bi-concave lens, has two inward curved surfaces. They have a negative
focal length and are best used to diverge a converging beam.
Double-concave lenses can diverge a collimated beam to a virtual focus and are commonly
used for image reduction and to spread light. Star Optic provides double-concave lenses in a variety of
substrates and anti-reflection coating options.
General Specifications N-BK7 Double Concave (DCV) Spherical Lens: | Material | N-BK7, UV FS, N-SF11, CaF2, Si, Ge, ZnSe, Sapphire | | | Design Wavelength | 546.1nm | | Surface Flatness | N<3(0.5)@632.8nm | | Surface Quality | 60/40 scratch-Dig | | Diameter Tolerance | +0/-0.2mm | | Thickness Tolerance | ±0.2mm | | Centration | <3 arc minutes | | Focal Length Tolerance | ±2% | | Clear Aperture | >90% | | Chamfer | Protective<0.5mmx45° |
Standard Products N-BK7 Double Concave (DCV) Spherical Lens: | Part No. | Material | D
(mm) | f
(mm) | R1
(mm) | R2
(mm) | Tc
(mm) | Te
(mm) | | DCVD12F-50 | N-BK7 | 12.7 | -50 | 52.17 | 52.17 | 2.8 | 2 | | DCVD12F-75 | N-BK7 | 12.7 | -75 | 78.08 | 78.08 | 2.5 | 2 | | DCVD12F-100 | N-BK7 | 12.7 | -100 | 104 | 104 | 2.4 | 2 | | DCVD12F-125 | N-BK7 | 12.7 | -125 | 129.91 | 129.91 | 2.3 | 2 | | DCVD12F-150 | N-BK7 | 12.7 | -150 | 155.83 | 155.83 | 2.3 | 2 | | DCVD12F-200 | N-BK7 | 12.7 | -200 | 207.66 | 207.66 | 2.2 | 2 | | DCVD12F-250 | N-BK7 | 12.7 | -250 | 259.49 | 259.49 | 2.2 | 2 | | DCVD12F-300 | N-BK7 | 12.7 | -300 | 311.32 | 311.32 | 2.1 | 2 | | DCVD12F-500 | N-BK7 | 12.7 | -500 | 518.63 | 518.63 | 2.1 | 2 | | DCVD12F-1000 | N-BK7 | 12.7 | -1000 | 1036.92 | 1036.92 | 2.1 | 2 | | DCVD25F-50 | N-BK7 | 25.4 | -50 | 52.17 | 52.17 | 2 | 5.1 | | DCVD25F-75 | N-BK7 | 25.4 | -75 | 78.08 | 78.08 | 2 | 4.1 | | DCVD25F-100 | N-BK7 | 25.4 | -100 | 104 | 104 | 2 | 3.6 | | DCVD25F-125 | N-BK7 | 25.4 | -125 | 129.92 | 129.92 | 2 | 3.2 | | DCVD25F-150 | N-BK7 | 25.4 | -150 | 155.83 | 155.83 | 2 | 3 | | DCVD25F-200 | N-BK7 | 25.4 | -200 | 207.66 | 207.66 | 2 | 2.8 | | DCVD25F-250 | N-BK7 | 25.4 | -250 | 259.49 | 259.49 | 2 | 2.6 | | DCVD25F-300 | N-BK7 | 25.4 | -300 | 311.32 | 311.32 | 2 | 2.5 | | DCVD25F-500 | N-BK7 | 25.4 | -500 | 518.63 | 518.63 | 2 | 2.3 | | DCVD25F-1000 | N-BK7 | 25.4 | -1000 | 1036.92 | 1036.92 | 2 | 2.2 |
Coating Options Of N-BK7 Double Concave (DCV) Spherical Lens: Star Optic's above standard double concave spherical lenses are
uncoated. In order to reduce the amount of light reflected from
each surface of the lens, antireflection coatings including singer
layer MgF2, multi-layer AR coating, Broadband multi-layer AR
coating and Dual wavelength AR coating are also available. | Single Layer MgF2 Coating | Multi-layer Anti-Reflective Coating | | | Boradband Anti-Reflective Coating | Dual Wavelength Anti-Reflective Coating | | |
Mounting Options For Double-Concave (DCV) Spherical Lens: Star Optic's above standard double concave spherical lenses are not
mounted. However, we can provide fixed mount and adjustable mount
for our lenses. Fixed Lens Mount
|
| Adjustable Lens Mount
|
|
Custom Your Own Lens: You have your full design freedom, and we are able to work with
complex designs to get you exactly what you need including optical
design, mechanical design and optical coating design. Zemax Deisgn
| Zemax Deisgn
| Solidworks Design
| Thin Film Coating Design
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