Bi-Concave Lenses
Te Lintelo Systems is your partner for Bi-Concave optics lenses made to your special needs, includes various coatings, mirrors, lenses, windows, prisms, polarizing optics, UV and IR optics, optical filters.
Bi-Concave Lenses
These lenses are similar to plano-concave lenses and are best used with absolute conjugate ratios between 1/5 and 5. 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 used in f.e. laser beam expanders, optical character readers, viewers, and projection systems.
example specifications:
| Material: | BK7 – Fused Silica – Quartz – Mf2G |
| Focal Length: | +/- 2 % |
| Design Wavelength: | 546,1 nm |
| Diameter Tolerance: | +0/- 0.2 mm |
| Centering: | < 5 min. of arc |
| Wavefront Distortion: | λ/10 |
| Clear Aperture: | 90 % of diameter |
| Surface Quality: | S/D 10-5 |
| Antireflection Coating: | Yes / No / on request |
The range of products we provide you includes:
• Plano optics, like; windows, light pipes, filters [colour glass, interference]
• mirrors [flat, spherical, aspherical, ellipsoidal, parabolic, free form]
• Prisms [Triple, Corner Cubes, Penta, Reflection, Porro, Dove]
• Beam splitters [polarizing, non-polarizing]
• Spherical optics; singlets, doublets, triplets, achromats, cylindric
• Aspherical lenses, ball lenses, rods
• Toroids
• Special types [gradient index, arrays, laser optics]
• Polarizing Optics [Glan-Taylor, Glan-Thomson, Rochon, Wollaston, Brewster, Retardation Plates]
• Domes
• Moulded Glass Optics
• Custom Fiber Optics
We are working with a hugh range of materials, including:
• optical glass from following manufactures / brands [Schott, Ohara, CDGM, Desag, Pilkington]
• Fused Silica
• Crystalline Optics like Quartz, Sapphire and others
• Metal Optics [Aluminum, Brass, Copper, Steel]