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Calcium Fluoride > Plano Concave Lenses CaF2

Introduction

Calcium Fluoride is often used in spectroscopic windows and lenses due to its high transmission from 350nm to 7µm. Its low absorption and high damage threshold makes it a popular choice for excimer laser optics. Calcium Fluoride’s low refractive index allows it to be used without an antireflective coating.
 
 

Standard Specifications

  
 

Items

Specifications

Material

Calcium Fluoride (CaF2)

Dimension Tolerance

+0.0/-0.2 mm

Thickness Tolerance

± 0.2 mm

Paraxial Focal Length

±2%

Clear Aperture

> 80%

Centration

< 3 arc minutes

Flatness

λ/4 at 632.8 nm

Surface Quality

scratch and dig 60-40

Bevel

0.5 (0/-0.3) mm

Notes:

1. Surface Quality could reach 40-20

2. Centration such as 1’, 30” is available.

3. Please show us the size and the coating specification.

  
   

 

Part NO.

f(mm)

ф(mm)

R(mm)

tc(mm)

te(mm)

fb(mm)

ILC1101

-100.0

25.4

42.50

2.0

3.9

-101.4

ILC1102

-200.0

25.4

85.00

2.0

3.0

-201.4

ILC1103

-500.0

25.4

212.50

2.0

2.4

-501.4

ILC1104

-1000.0

25.4

425.00

2.0

2.2

-1001.4

 

  

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