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Rod lens

Product Details

Rod lens

A Rod lens is a special type of cylinder lens, and is highly polished on the circumference and ground on both ends.   Rod lenses perform in a manner analogous to a standard cylinder lens, and can be used in beam shaping and to focus collimated light into a line. Our rod lenses play a key part in many laser and imaging optical assemblies, and can be used for UV, visible and NIR applications.

Designed for use in a variety of laser and imaging systems, these components are available in a range of micro sizes for integration into a host of OEM applications. Custom sizes, variations in polishing/ ground surfaces and additional coatings are available upon request, please contact our Sales Department for details.

Diameter Tolerance

±0.02 mm

Length Tolerance

±0.02 mm

Surface Accuracy

 l/10 @ 633nm

Focal length
+/-1%

Surface Quality

20/10 or better

Material

BK7,UV Fused silica,sapphire,etc

Clear Aperture

>90%

Ellipticity

<0.005mm

Coating

Custom

Bevel

Protective bevel as needed

Please contact our Sales Department for details.


Related Products

When the ends of rod lenses are polished they may be used as circular lenses, and will have the same optical properties as a long circular lens with a narrow diameter. These lenses have an important application in rigid endoscopes, medical instruments used to view inside the human body. Unlike a traditional microlens, a rod lens will self-align to the tube diameter. Their unique shape means they can also provide structural support to the endoscope tube. For endoscopy used precision cut lenses and exact surface curvature are essential.


Rod Lenses for Rigid Endoscopes

Rod lens systems use special glass rods with optically finished ends, providing images with higher brightness, contrast and colour reproduction than conventional lenses.

Commonly, rigid endoscopes have a series of high-resolution optical glass rod lenses. The endoscopes can be forward viewing (0 degrees) or angled (10–120 degrees) to allow visualization out of the axis of the telescope and increase the FOV by rotating the instrument. The optical quality of lens-generated images of rigid endoscopes still surpasses that of the fiber-optic or digital images produced by flexible scopes.

Material N-BK7, UVFS, H-K50,
H-F4, H-BAK7, H-LAF10L,
N-SK15, H-ZK21, H-F1, H-ZF4
Diameter Ø0.6mm or customization
Type Flat/Flat
Plano-Convex
Plano-Concave
Cemented
Flatness N<3, ΔN<0.5 for spherical surface
N λ/4~λ/8 for flat surface
Centering <5’
Surface Quality 20/10~60/40
Clear aperture 90%
Coating Uncoated, or customized



Material Length Dia1 Dia2 Dia3 Dia4 Dia5 Dia6 Dia7 Dia8

N-BK7, UVFS,

H-K50,

H-F4, 

H-BAK7, 

H-LAF10L,

N-SK15, 

H-ZK21, 

H-F1, 

H-ZF4

11.4 2.1 2.0 1.9 1.8 1.7
14.7 2.1 2.0 1.9 1.8 1.7
15 2.1 2.0 1.9 1.8 1.7
17.6 2.2 2.1 2.0 1.9 1.8
19.4 2.2 2.1 2.0 1.9 1.8
20.2 2.2 2.1 2.0 1.9 1.8
22.9 2.8 2.7 2.77 2.2 2.1 2.0 1.9 1.8
23 2.8 2.7 2.77 2.2 2.1 2.0 1.9 1.8
24 2.8 2.7 2.77 2.2 2.1 2.0 1.9 1.8
29 3.5 3.2 2.77 3.0 2.8 2.7
29.5 3.5 3.2 3.0 2.8 2.7
29.8 3.5 3.2 3.0 2.8 2.7
46 6.6 6.5 6.0 5.5

Product ParamentersPlease contact us with your specific requirements.


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  • +86-199 0981 7122
  • +86-199 0981 7122
  • yibeiteoptics@gmail.com
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