Rod Lens
  • Rod Lens

Rod Lens


Rod Lenses are polished on the circumference and ground on both ends. Optical performance is similar to a cylinder lens. Collimated light passing through the diameter of the rod lens will be focused into a line. optical  glass  and UV Fused Silica substrates are available for a variety of UV, Visible and NIR applications.

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Rod LensOptical rod lens are primarily used to change the design requirements for imaging size. For example, converting a spot spot into a line spot, or changing the height of the image without changing the image width. Can be applied to linear detector illumination, barcode scanning, holographic illumination, optical information processing, computer, laser emission. Optical cylindrical lens are also widely used in high-power laser systems and synchrotron beam lines. At the same time, the requirements for rod lens parts are becoming higher and higher, especially in high-power laser cavity and long-distance line interferometers. Such as high precision test instruments and devices. The cross-sectional refractive index is parabolically shaped and has a self-focusing effect on the beam, which can be used on an optical lens collimated by the fiber.


1MaterialFused Silica  IR Trasmissive grade with OH< 10 PPM

4Clear Aperture4.75mm(14.922mm Naminal Circumference)*10mm Length 
5Surface Quality20/10 Scratch/Dig 
6Surface Figure1 wavelength irregularity 
7Bevel Edge45Deg +/-15 deg Max Bevel=0.5mm 
8CoatingMgF2 Hard Coating Centered at 780nm

Rod Lens

Type No.Diameter

Optical glass is a commonly used optical material, and its manufacturing process is mature and complete in variety. Generally, optical glass can transmit various color lights with a wavelength of 0.35 to 2.5 m, and light exceeding this range will be strongly absorbed by the optical glass.

There are many places where glass lenses are needed in production and life, but can you specifically distinguish between optical lenses and ordinary lenses? Let's take a look at it together:

Ordinary glass: Regardless of the chemical composition and the curing temperature region, they are obtained by the melt supercooling method, have solid mechanical properties due to an increase in viscosity, and are reversible from a liquid to glass transition process.

The optical glass is mixed with a high-purity silicon, boron, sodium, potassium, zinc, lead, magnesium, calcium, barium, etc. according to a specific formula, melted in a high temperature in a platinum crucible, and uniformly stirred by an ultrasonic wave to remove bubbles; Slowly cool down the time to avoid internal stress in the glass block. The cooled glass block must be optically measured to verify that the purity, transparency, uniformity, refractive index, and dispersion rate are within specifications. The qualified glass block is heated and forged into an optical lens blank.

The main difference between optical lenses and ordinary lenses is that optical lenses have a high degree of transparency, a high degree of physical and chemical properties, and a specific and precise optical constant. These properties are not replaceable by ordinary lenses.

Today, with the rapid development of science and technology, the new optical material resin lens is far superior to ordinary lenses in terms of its optical performance, safety performance and protection against harmful rays.

As a Customized Optical Components Manufacturer, BRD can produce Customized Optical Components. Any requirements and problems can ask us at any time.

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