Zero lenses, cavity 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
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.
Radius r2 = BFL | UV-FS Ø 12.7 x 6.35 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