Zero lenses, cavity lenses

Zero lenses

Tolerances  
Diameter Ø: +0.0/-0.1 mm
Thickness t: ±0.1 mm
Radius of curvature: ±1%
Centering/Wedge: < 5 min. of arc
Chamfer: 0.1–0.3 mm x 45°
Clear aperture: > 80%
Surface imperf. tol.: 5/3 x 0.025
 

Zero lenses

Zero lenses have a convex and a concave side with the same radius of curvature: r = r1 = –r2. The transmitted beam has the very long focal length:

With additional plano-convex lenses, the transmitted and reflected beam can be focussed to the same point similar to cavity lenses.


Radius
r1 = –r2		UV-FS
Ø 12.7 x 6.35 mm
Article-No.
Stock		UV-FS
Ø 25 x 6.35 mm
Article-No.
Stock
30 mm S-00304 ✓ –  
38 mm S-01083 ✓ –  
50 mm S-00597 ✓ S-01088 ✓
75 mm S-00598 ✓ S-01089 ✓
100 mm S-00599 ✓ S-01090 ✓
150 mm S-00337 ✓ S-00497 ✓
200 mm S-01084 ✓ S-01091 ✓
250 mm S-00263 ✓ S-01092 ✓
300 mm S-00276 ✓ S-00493 ✓
350 mm S-00262 ✓ S-00256 ✓
500 mm S-00261 ✓ S-00257 ✓
750 mm S-00260 ✓ S-00259 ✓
1.5 m S-01085 ✓ S-01093 ✓
2 m S-01086 ✓ S-01094 ✓
5 m S-01087 ✓ S-01095 ✓

✓ available from stock

Cavity lenses

Cavity lens

Tolerances  
Diameter Ø: +0.0/-0.1 mm
Thickness t: ±0.1 mm
Radius of curvature: ±1%
Centering/Wedge: < 5 min. of arc
Chamfer: 0.1–0.3 mm x 45°
Clear aperture: > 80%
Surface imperf. tol.: 5/3 x 0.025
 

Cavity lenses are positive meniscus lenses, designed for collinear pumping. Back focal length (BFL) is equal to the second radius of curvature:
  
Cavity lenses are optically designed for 514 nm, but can be used in the range 200-2500 nm without significant differences.

 

Scheme cavity lenses

Cavity lens                


Radius
r2 = BFL		UV-FS
Ø 12.7 mm
Article-No.
Stock
18 mm S-01333 ✓
25 mm S-01601 ✓
38 mm S-01602 ✓
50 mm S-01334 ✓
75 mm S-01603 ✓
100 mm S-01604 ✓
150 mm S-01605 ✓
200 mm S-01606 ✓
250 mm S-01607 ✓
350 mm S-01608 ✓
500 mm S-01609 ✓

✓ available from stock

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