Positive Meniscus Lens
Negative Meniscus Lens
Meniscus Lens can increase the NA of the system while only adding slightly to the total spherical aberrations.
The Negative Meniscus Lens is used to increase the focal length of another lens while maintaining the angular resolution of the optical assembly.
This lens shape is best used when one conjugate is relatively far from the lens.
Applications:
●Camera Systems
●Projection Optics System
●Imaging Optics Systems
●Laser Measurements Systems
●Optical View Finder
BK7 Positive Meniscus Lens
| Specifications: | |
| Material | BK7 grade A optical glass |
| Design Wavelength | 546.1nm |
| Design Index | 1.5183±0.0005 |
| Diameter Tolerance | +0.00/-0.15mm |
| Paraxial Focus Length | ±2% @546.1nm |
| Centration | <3 arc minutes |
| Clear Aperture | >Central 85% of diameter |
| Surface Figure | λ/4@632.8nm |
| Surface Quality | 60-40 S/D |
| Protective Bevel | <0.25mm x 45° |
| BK7 Positive Meniscus Lens Standard Products: | |||||||
| Part No. | f (mm) | φ(mm) | R1(mm) | R2(mm) | tc (mm) | te (mm) | fb (mm) |
| 100.0 | 25.4 | 33.720 | 90.00 | 4.0 | 2.5 | 97.5 | |
| 125.0 | 25.4 | 38.47 | 90.00 | 4.0 | 2.8 | 121.8 | |
| 150.0 | 25.4 | 42.52 | 90.00 | 4.0 | 3.0 | 146.3 | |
| 175.0 | 25.4 | 46.05 | 90.00 | 4.0 | 3.1 | 171.2 | |
| 200.0 | 25.4 | 49.03 | 90.00 | 3.5 | 2.8 | 197.0 | |
| 250.0 | 25.4 | 83.96 | 235.00 | 3.5 | 2.9 | 246.5 | |
| 300.0 | 25.4 | 94.08 | 235.00 | 3.5 | 3.0 | 296.3 | |
| 350.0 | 25.4 | 102.90 | 235.00 | 3.5 | 3.1 | 346.0 | |
| 400.0 | 25.4 | 110.72 | 235.00 | 3.5 | 3.1 | 395.8 | |
| 500.0 | 25.4 | 123.90 | 235.00 | 3.5 | 3.2 | 495.4 | |
| 600.0 | 25.4 | 204.95 | 600.00 | 3.5 | 3.2 | 595.3 | |
| Specifications: | |
| Material | BK7 grade A optical glass |
| Design Wavelength | 546.1nm |
| Design Index | 1.5183±0.0005 |
| Diameter Tolerance | +0.00/-0.15mm |
| Paraxial Focus Length | ±2% @546.1nm |
| Centration | <3 arc minutes |
| Clear Aperture | >Central 85% of diameter |
| Surface Figure | λ/4@632.8nm |
| Surface Quality | 60-40 S/D |
| Protective Bevel | <0.25mm x 45° |
| BK7 Negative Meniscus Lens Standard Products: | |||||||
| Part No. | f (mm) | φ(mm) | R1(mm) | R2(mm) | tc (mm) | te (mm) | fb (mm) |
| -100.0 | 25.4 | 90.00 | 32.590 | 3.0 | 4.5 | -99.2 | |
| -125.0 | 25.4 | 90.00 | 37.26 | 3.0 | 4.5 | -123.7 | |
| -150.0 | 25.4 | 90.00 | 41.42 | 3.0 | 4.0 | -149.5 | |
| -175.0 | 25.4 | 90.00 | 44.86 | 3.0 | 3.8 | -174.6 | |
Note:
Coatings are available upon request.
Metal Mount is available upon request.
Lenses with material Sapphire, Silicon, Germanium, CaF2, ZnSe etc are also available upon request.
The general tolerance specifications above provide a guideline regarding manufacturing capabilities for optics ranging in size from diameter 0.6-300mm.
The manufacturing limits are not absolute; tighter tolerances may be possible.
Part specific tolerances may vary depending on component size, shape, and/or material.