Overview: Positive meniscus (convex-concave) lenses are designed to minimize
spherical aberration. When used in combination with another lens, a
positive meniscus lens will shorten the focal length and increase
the numerical aperture (NA) of the system without introducing
significant spherical aberration. When used to focus a collimated
beam, the convex side of the lens should face the source to
minimize spherical aberration. Star Optic provides positive
meniscus lenses in a variety of substrates and anti-reflection
coating options. General Specifications Of UV Fused Silica Positive Meniscus
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 Of UV Fused Silica Positive Meniscus Lens: | Part No. | Material | D
(mm) | f
(mm) | R1
(mm) | R2
(mm) | Tc
(mm) | Te
(mm) | Fb
(mm) | | PMEND25F100-FS | UVFS | 25.4 | 100 | 31 | 91.2 | 4 | 2.2 | 95.9 | | PMEND25F150-FS | UVFS | 25.4 | 150 | 47.6 | 149.8 | 3.2 | 2 | 146.8 | | PMEND25F200-FS | UVFS | 25.4 | 200 | 64.2 | 209.8 | 2.9 | 2 | 197.2 | | PMEND25F300-FS | UVFS | 25.4 | 300 | 97.6 | 330.6 | 2.6 | 2 | 297.5 | | PMEND25F500-FS | UVFS | 25.4 | 500 | 166.8 | 603.4 | 2.4 | 2 | 497.8 | | PMEND25F1000-FS | UVFS | 25.4 | 1000 | 348 | 1425.7 | 2.2 | 2 | 998 | | PMEND50F100-FS | UVFS | 50.8 | 100 | 30.6 | 80.9 | 10.7 | 1.2 | 89 | | PMEND50F150-FS | UVFS | 50.8 | 150 | 46.5 | 135.3 | 7.8 | 2.7 | 142 | | PMEND50F200-FS | UVFS | 50.8 | 200 | 63 | 193.4 | 6.6 | 2.9 | 193.4 | | PMEND50F300-FS | UVFS | 50.8 | 300 | 97.6 | 327.6 | 5.4 | 3 | 294.8 | | PMEND50F500-FS | UVFS | 50.8 | 500 | 165.4 | 582.2 | 5 | 3.6 | 495.2 | | PMEND50F1000-FS | UVFS | 50.8 | 1000 | 356.7 | 1580.2 | 5 | 4.3 | 995.6 |
Coating Options Of UV Fused Silica Positive Meniscus Lens: Star Optic's above standard positive meniscus 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 Positive Meniscus Lens: Star Optic's above standard positive meniscus 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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