UV Fused Silica Double Concave Lens
- Double-concave lens has negative focal length.
- DCV lens diverges light to form virtual images.
- Suitable for image reduction within finite conjugates.
- UV fused silica offers high transmission in UV region.
- UV fused silica exhibits low laser-induced fluorescence.
- Fused silica has high bulk damage threshold and lower thermal coefficient compared to N-BK7.
Application Notes
- DCV for Beam Diversion : DCV is used with high power collimated beam to diverge it on other side.
- DCV in an Optical System : DCV lens when placed in an optical system, increase the focal length of the system with additional benefits of offsetting Spherical Aberrations caused by other lenses within the system.
- DCV in Scanners : DCV is used for scanning in medical equipment and CD/DVD players, where laser beam is diverged to sharply access a specific area; with UV grade fused silica you can employ it in Deep UV applications.
- DCV in Imaging : DCV is used when the object and image are at absolute conjugate ratios closer to 1:1 with a converging input beam.
Specification
- Material : UV Fused Silica
- Focal length : ±1%.
- Diameter available : Ø5 to Ø100.
- Diameter Tolerance : +0/-0.1 mm.
- Clear aperture : 90%.
- Center Thickness : ±0.1mm.
- Centeration : Better than 3 arc min.
- Surface Irregularity : Lambda/4 @ 632.8 nm.
- Surface quality : 40-20 Scratch-Dig.
- Design Wavelength : 587.6 nm.
- Wavelength range : 193 nm- 2.1 µm. (Un-Coated)
- AR Coatings available : A)BBARC ; B) Laser V-Coating.
2. For good performance under low light conditions, we suggest you to use AR-coating from our coating catalogue.
3. Customized designs are available from diameters of 3 mm to 300 mm with your specifications and coating options.
Product Matrix
UV FUSED SILICA Double Concave Lens- Diameter 5 mm
| Quantity | Doc | Part Number | Diameter (mm) | Focal Length (mm) | Back Focal Length (mm) | Center Thickness (mm) | Edge Thickness (mm) | |
|---|---|---|---|---|---|---|---|---|
| DCV-5-10FS | 5 | -10 | -10.2 | 0.7 | 1.4 | |||
| DCV-5-15FS | 5 | -15 | -15.2 | 1 | 1.4 |
UV FUSED SILICA Double Concave Lens- Diameter 10 mm
| Quantity | Doc | Part Number | Diameter (mm) | Focal Length (mm) | Back Focal Length (mm) | Center Thickness (mm) | Edge Thickness (mm) | |
|---|---|---|---|---|---|---|---|---|
| DCV-10-15FS | 10 | -15 | -15.2 | 0.8 | 2.7 | |||
| DCV-10-20FS | 10 | -20 | -20.2 | 1.1 | 2.5 |
UV FUSED SILICA Double Concave Lens- Diameter 12.5 mm
| Quantity | Doc | Part Number | Diameter (mm) | Focal Length (mm) | Back Focal Length (mm) | Center Thickness (mm) | Edge Thickness (mm) | |
|---|---|---|---|---|---|---|---|---|
| DCV-12.5-20FS | 12.5 | -20 | -20.2 | 1.2 | 3.4 | |||
| DCV-12.5-25FS | 12.5 | -25 | -25.3 | 1.3 | 3 |
UV FUSED SILICA Double Concave Lens- Diameter 25 mm
| Quantity | Doc | Part Number | Diameter (mm) | Focal Length (mm) | Back Focal Length (mm) | Center Thickness (mm) | Edge Thickness (mm) | |
|---|---|---|---|---|---|---|---|---|
| DCV-25-30FS | 25 | -30 | -30.3 | 1.5 | 7.5 | |||
| DCV-25-40FS | 25 | -40 | -40.9 | 2 | 6.3 | |||
| DCV-25-50FS | 25 | -50 | -50.9 | 2.5 | 5.9 |