YAG Laser Focusing Lens / NYTL_NYDL
YAG laser focusing lenses are air spaced triplets or doublets for YAG wavelengths.
The elements are made of crown glass of lower dispersion and flint glass of higher dispersion.
These lenses are optimized for spherical aberration and coma. With its spot size designed to be smaller than or equal to the diffraction limited spot size for beams at 1064nm.
Common Specifications
| Material | Crown Glass − (Air spaced) − Flint Glass |  |
|---|---|---|
| Material of Frame | Aluminum Finishing: Black anodized | |
| Design Wavelength | 1064nm, 632.8nm | |
| Coating | Narrow band multi-layer anti-reflection coatig for 1064nm and 633nm | |
| Acceptance Angle | ±1° | |
| Laser Damage Threshold | 1J/cm2 (Laser pulse width 10ns, repetition frequency 20Hz) |
| Schematic | Outline Drawing |
|---|---|
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| Part Number | Maximum Lens Diameter φD |
Focal Length ｆ |
Diameter φDc |
Clear Aperture φDe |
Length L |
Lens Mounting Thread Ma |
Protective Window Thread Mb |
Thread Length A |
Numerical aperture (NA) |
Working Distance (WD) |
|---|---|---|---|---|---|---|---|---|---|---|
| NYTL-25-20PY1 | φ25mm | 20mm | φ32mm | φ20mm | 22mm | M29 P0.75 | M22 P0.75 | 6mm | 0.5 | 9mm |
| NYTL-30-30PY1 | φ30mm | 30mm | φ36mm | φ27mm | 22mm | M34 P0.75 | M28 P0.75 | 6.5mm | 0.45 | 19.1mm |
| NYTL-30-40PY1 | φ30mm | 40mm | φ36mm | φ26.5mm | 19mm | M34 P0.75 | M28 P0.75 | 4mm | 0.33 | 30.9mm |
| NYTL-30-50PY1 | φ30mm | 50mm | φ36mm | φ25.5mm | 19mm | M34 P0.75 | M28 P0.75 | 3.5mm | 0.25 | 41.4mm |
| NYDL-30-100PY1 | φ30mm | 100.1mm | φ36mm | φ27mm | 14mm | M34 P0.75 | M34 P0.75 | 4mm | 0.14 | 88.4mm |
| NYDL-30-150PY1 | φ30mm | 149.3mm | φ36mm | φ27mm | 12mm | M34 P0.75 | M34 P0.75 | 4mm | 0.09 | 140mm |
| NYDL-30-60PY1 | φ30mm | 59.9mm | φ36mm | φ27mm | 17mm | M34 P0.75 | M34 P0.75 | 4mm | 0.23 | 41.1mm |
| NYDL-30-80PY1 | φ30mm | 79.9mm | φ36mm | φ27mm | 15mm | M34 P0.75 | M34 P0.75 | 4mm | 0.17 | 67.6mm |
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