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UV FUSED SILICA BICONCAVE LENSES

Spherical biconcave lenses of fused silica are mostly used for UV monochromatic lights. Fused silica has almost same performance of transmittance with BK7 in visual and near IR, but has higher performance than BK7 in UV.These lenses have negative focal lengths and are used when parallel beams are diverged.

The lenses are polished carefully by selecting materials (striae, bubbles, inclusions, and homogeneity) and paying attention to dispersion (digs, scratches, and glosses) to prevent troubles with coherent light.

Uncoated and coated with broadband multilayer AR coatings for visible are available.


Standard Specifications:
Fused silica biconcave lenses

Optical Material:
Diameter Tolerance:
Design Wavelength:
Design Index:
Paraxial Focal Length:
Centration:
Clear Aperture:
Surface Quality:
Surface Figure:
Bevel:
Coating:

UV Grade Fused Silica
+0.0, -0.1mm
546.1nm
1.46008 ±0.0005
±2%
3 arc minutes
>85%
40-20 scratch and dig
lambda/4
<0.25mm X 45°
available upon request


Standard UV Fused Silica Biconcave Lenses

Dia(mm)

f(mm)

R1(mm)

te(mm)

tc(mm)

fb(mm)

Product Number

12.7

-15.0

6.90

6.2

2.0

-10.8

UQT-BICAF2010

12.7

-20.0

9.20

4.5

2.0

-16.9

UQT-BICAF2011

12.7

-25.0

11.50

3.9

2.0

-22.3

UQT-BICAF2012

12.7

-30.0

13.80

3.6

2.0

-27.5

UQT-BICAF2013

12.7

-40.0

18.40

3.1

2.0

-37.9

UQT-BICAF2014

25.4

-35.0

16.10

8.2

2.0

-29.4

UQT-BICAF2015

25.4

-50.0

23.00

5.8

2.0

-46.0

UQT-BICAF2016

25.4

-75.0

34.51

4.4

2.0

-72.0

UQT-BICAF2017

25.4

-100.0

46.01

3.8

2.0

-97.4

UQT-BICAF2018

25.4

-150.0

69.01

3.2

2.0

-147.8

UQT-BICAF2019

25.4

-175.0

80.51

3.0

2.0

-172.9

UQT-BICAF2020

25.4

-200.0

92.02

2.9

2.0

-198.0

UQT-BICAF2021

25.4

-250.0

115.02

2.7

2.0

-248.2

UQT-BICAF2022

25.4

-300.0

138.02

2.6

2.0

-298.2

UQT-BICAF2023

25.4

-500.0

230.04

2.4

2.0

-498.4

UQT-BICAF2024

25.4

-1000.0

460.08

2.2

2.0

-998.5

UQT-BICAF2025

38.0

-50.0

23.00

13.0

3.0

-41.1

UQT-BICAF2026

38.0

-100.0

46.01

7.1

3.0

-95.1

UQT-BICAF2027

38.0

-150.0

69.01

5.7

3.0

-146.1

UQT-BICAF2028

38.0

-200.0

92.02

5.0

3.0

-196.6

UQT-BICAF2029

38.0

-350.0

161.03

4.1

3.0

-347.2

UQT-BICAF2030

38.0

-500.0

230.04

3.8

3.0

-497.4

UQT-BICAF2030

Please Contact ultiQuest for other dimensions in prototype and production quantities.

NOTES!  
Focal lengths of these lenses change as the shifts of refractive indexes of the material according to wavelength. (In the short wavelength range, the refractive index is higher and the focal length is shorter. In the long wavelength range, the refractive index is lower and the focal length is longer.)
The edge thicknesses fare theoretical values not including chamfer.
Be sure to wear laser safety goggles when checking optical path and adjusting optical axis.
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CRYSTALS-INDEX
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Contact Us
  For more information on product,please contact our product manager Mr.Grand Liu by email: info@ultiquestcom.com

 
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