Custom Specific Plano-Concave Lenses

Te Lintelo Systems is your partner for Plano-Concave lenses made to your special needs, includes various coatings, mirrors, lenses, windows, prisms, polarizing optics, UV and IR optics, optical filters.

Plano-Concave Lenses

Concave lenses convert incoming parallel rays in diverging ray bundles that seem to originate from a single point in the object space – the so called imaginary focal point. Like plano-convex lenses these lenses minimize aberrations for absolute conjugate ratios more than 5 or less than 1/5. For this, plano-convex lenses should be placed with parallel beam entering the curved side of the lens. However such an orientation of a lens may be disadvantageous and even dangerous when a plano-concave lens is used to diverge a high power pulsed laser beam. A rest-reflexion from the curved surface will produce a real secondary focus that can damage optical elements preceding the concave lens or even causing a laser break-down at this point. By high power applications the concave surfaces should be oriented in such a way that a secondary focus is avoided.

example specifications:

Material: BK7 – Fused Silica – Quartz – Mf2GFocal Length: +/- 2 %Design Wavelength: 546,1 nmDiameter Tolerance: +0/- 0.2 mmCentering: < 5 min. of arcWavefront Distortion: λ/10Clear Aperture: 90 % of diameterSurface Quality: S/D 10-5Antireflection 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]