OPTICS
Glass Thickness Compensation Near Infrared Objective Lenses
PAL-NIR-LC
This is a high NA infinity corrected objective lens for laser processing (fundamental of YAG laser). Its glass-thickness- compensation optical design makes it possible to realize an ideal beam spot size and quality even if it was processed thorough a cover glass.
Optics & Optical Coatings
- Two kinds objective lenses are available. They are designed to correct aberration depending on the thickness of cover glass. (t= 0.7 mm and 1.1 mm) ◦With its long working infinity correction function; this objective lens can be used for a laser system and coaxial observation.
- It is also used for the observation of Near Infrared light.
- High resolution type (NA=0.65) is also available.
- This objective lens can be used with a pulse laser of visible light (532nm).
- Laser Damage Threshold(reference): 0.1J/cm2 (532nm), 0.2 J/cm2 (1064nm) (Laser pulse width: 10ns, repetition frequency: 20Hz)
Key Specifications
| Magnification (PAL-20-NIR-LC07) | 20× |
| Focal length f[mm] | 10 |
| N.A. | 0.4 |
| Working distance WD[mm] | 19.98 |
| Resolution (λ=550nm)[μm] | 0.69 |
| Focal depth (λ=550nm)[μm] | ±11.7 |
