Launch of Rayfact UV25mm F2.8 C-Mount Lens for Ultraviolet Cameras
Nikon released the new C-mount industrial lens Rayfact UV25mm F2.8, designed for use with ultraviolet cameras. This Rayfact UV lens series is ideal for visual inspections of semiconductor wafers and electronic components, detecting microscopic scratches and surface irregularities. It can also identify materials that are difficult to distinguish under visible light. Additionally, this lens series is also used in areas such as combustion and plasma research and its applications are expected to expand in the future.
The Rayfact UV25mm F2.8 is optimized for use with the IMX487 high resolution UV image sensor featuring the industry’s smallest* 2.74µm square pixels manufactured by Sony Semiconductor Solutions Corporation., This lens is designed to ensure clear images all the way to the edges and is brighter compared to previous products, enabling high resolution inspections over lager areas.
Main Features
- Supports an ultraviolet wavelength range of 200 nm – 400 nm.
- Design optimized for Sony Semiconductor Solutions’ IMX487, a CMOS image sensor compatible with UV wavelengths
- Φ19.3 mm image size compatible with 1.2″ sensors
- Maintains brightness of F2.8 at standard field angle.
- Minimal focal shift within supported wavelength range
- Compatible with highly versatile C-mount
Main Specifications
| Magnification | ∞ | -0.05x | -0.15x | -0.20x | |
|---|---|---|---|---|---|
| Focal length (mm) | 25.0 | ||||
| F Number (∞) | F2.8 – F16 | ||||
| Wavelength range (nm) | 200 – 400 | ||||
| Image size (mm) | Φ19.3 (compatible with 1.2″ sensors) | ||||
| Object size (mm)*1 | ─ | Φ386.0 | Φ128.7 | Φ96.5 | |
| Object-to-image distance (mm) | ─ | 569.9 | 236.4 | 195.7 | |
| Relative illumination (%)*2 | F2.8 | 22.4 | 28.1 | 38.8 | 43.3 |
| F4.0 | 38.8 | 47.1 | 61.1 | 67.0 | |
| Distortion (%)*2 | -0.8 | -0.48 | -0.08 | +0.06 | |
| Working distance (mm) | ─ | 488.7 | 155.2 | 114.5 | |
| Mount size | C-mount | ||||
| Attachment size | M35.5 (P = 0.5) | ||||
| Diameter/length (mm) | Φ60 x 63.5 | ||||
| Weight (g) | Approx. 38 | ||||
