Kowa LM28LF-48 | 46mm Ø 28mm Fixed Lens, 4K, TFL-II Mount, 3.1µm Pixel, f/2.8–22, 160 lp/mm Center Resolution, Visible Spectrum (400–800nm)
The Kowa LM28LF-48 is a high-precision fixed focal length lens engineered for large-format industrial and machine vision applications. Featuring a 28mm focal length and designed for 46mm image circle sensors, this lens supports up to 4K resolution with pixel sizes as small as 3.1µm. The LM28LF-48 delivers outstanding clarity with a center resolution of 160 lp/mm and edge resolution of 63 lp/mm, maintaining sharp image quality across the entire frame. With minimal distortion of just -0.17%, it is ideal for inspection systems, robotics, and image processing platforms demanding accurate imaging and calibration integrity.
Built for flexibility, this lens includes a manual iris (f/2.8–22) and manual focus, offering full optical control for dynamic environments. It utilizes a TFL-II mount for secure, stable attachment and offers a wide field of view (424.3mm horizontal and 281.1mm vertical) at close range. Compatible with sensors operating in the visible spectrum (400–800nm), the LM28LF-48 supports demanding industrial applications within a temperature range of -10°C to +50°C. With a compact size (Ø75 x 127mm) and weight of 500g, it integrates well into space-constrained vision systems without compromising performance.
Features:
- 28mm Fixed Focal Length
- Designed for 46mm Ø image circle sensors
- Supports 4K resolution and 3.1µm pixel sensors
- TFL-II Mount for secure high-vibration applications
- Manual focus and manual iris (f/2.8–22)
- Ultra-low TV distortion at -0.17%
- Visible spectrum performance (400–800nm)
- 160 lp/mm center resolution, 63 lp/mm edge
- Robust aluminum housing, 500g weight
- Wide operating temperature: -10°C to +50°C
Applications:
- Machine vision and inspection
- Large-format industrial cameras
- High-resolution imaging and robotics
- Semiconductor inspection
- Automated optical inspection (AOI)
- Scientific imaging and research
- Line scan or area scan applications
| Aperture (F-stop) | 2.8 - 22 |
| Aperture Control | Manual |
| Application Field | - |
| Back Focus in Air (mm) | 38.50 |
| Focus Control | Manual |
| Field of View (Horizontal, mm) | 424.3 |
| Field of View (Vertical, mm) | 281.1 |
| Filter Size (mm) | M72 x P0.75 |
| Focal Length (mm) | 28.0 |
| Focus Range (m) | 0.5 - ∞ |
| Megapixel Support | 4K |
| Mount | TFL-II |
| Pixel Size (µm) | 3.10 |
| Resolution (Center, lp/mm) | 160 |
| Resolution (Margin, lp/mm) | 63 |
| Sensor Size | 46mm Dia. |
| Series | LF |
| Lens Size (mm) | Ø75 x 127 |
| TV Distortion (%) | -0.17 |
| Temperature Range (°C) | -10°C to +50°C |
| Lens Type | Fixed Focal Length |
| Wavelength Range | Visible (400nm - 800nm) |
| Weight (g) | 500 |
