Meniscus Lens

Meniscus Lens

Meniscus lens is a lens that has two curved spherical surfaces, one convex and the other concave. Around the middle, the meniscus lens is thicker than at the sides. Thus, rising beam waste and spherical aberration the lens has a smaller beam diameter.
When a meniscus lens is paired with another lens it shortens the focal length and increases the system’s numerical aperture. This decreases the distortion of the image and increases the resolution of the image.

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Product Catalogue

Part No. f (mm) dia. (mm) R1 (mm) R2 (mm) fc (mm) te (mm) fb (mm)
LEN4101 100.0 25.4 33.72 90.0 4.0 2.5 97.5
LEN4102 125.0 25.4 8.47 90.0 4.0 2.8 121.8
LEN4103 150.0 25.4 42.52 90.0 4.0 3.0 146.3
LEN4104 175.0 25.4 46.05 90.0 4.0 3.1 171.2
LEN4105 200.0 25.4 49.03 90.0 3.5 2.8 197.0
LEN4106 250.0 25.4 83.96 235.0 3.5 3.0 296.3
LEN4107 300.0 25.4 94.08 235.0 3.5 3.0 296.3
LEN4108 400.0 25.4 110.72 235.0 3.5 3.1 395.8
LEN4109 500.0 25.4 123.9 235.0 3.5 3.2 495.4
LEN4110 800.0 25.4 145.39 600.0 3.5 3.3 794.5
LEN4111 1500.0 25.4 339.05 600.0 3.5 3.4 1492.0
LEN4112 2000.0 25.4 380.54 600.0 3.5 3.4 1990.2
LEN4113 4000.0 25.4 466.12 600.0 3.5 3.5 3984.5
LEN4114 -100.0 25.4 90.0 32.59 3.0 4.5 -99.2
LEN4115 -125.0 25.4 90.0 37.26 3.0 4.2 -123.7
LEN4116 -150.0 25.4 90.0 41.42 3.0 4.0 -149.5
LEN4117 -175.0 25.4 90.0 44.86 3.0 3.8 -174.6

Specifications

Materical

BK7 or other optical glass, Fused Silica, ZnSe, CaF2

Diameter Tolerance

+0/-0.15mm

Paraxial Focal Length Tolerance

±2%

Centration

3 arc minutes

Surface Quality

60-40 scratch and dig

Clear Aperture

>85%

Surface Figure

λ/4@632.8nm

Chamfer

<0.25 mm x 45°

Coating

Customer Specified

Product Knowledge

Special Features

  • We have the latest technology to manufacture low cost and high-quality glass half-ball lenses
  • Widely used by major LED firms such as Cree, Samsung, PerkinElmer and many more
  • Instead of moulding, we use optical machining technology to make all products, such as BK7, B270, Fused Silica, Crystal and any other optical glass.
  • Glass lenses have many benefits compared with plastics and silicone lens used in the LED industry
  • Half ball lens with scratch-resistant surface, higher transmission, a high or very high index of refraction, heat-resistant up to > 300 ° C (572 ° F), some applications such as high power or UV LED.

Applications
1.  Meniscus lens Used often for Beam Focusing
2.  Meniscus lens also Diminishes the Increase in Spherical Aberrations for Multi-Element Systems