Entocentric Lens - VCH 1.8/25 - BC2518-9M
Characteristics
- manually adjustable, high-resolution fixed-focal lens for C and CS mount cameras
- for matrix and line cameras with 1.1" sensors (12 megapixels) and 1" sensors (9 megapixels)
- resolution of 147 lp/mm from center to corners of the image
- extremely low distortion, suitable for image measurement
- increased light distribution
- compact design, robust and durable
- 3 fixing screws each (plus 2 knurling screws) for focus and iris - suitable for applications with vibrations and acceleration
Technical data
| Focal length | 25 mm |
| F-number | 1.8 - 16C |
| MOD | 0.1 m |
| Sensor size (max) | 1" |
| Pixel size (min) | 3.69 µm |
| Resolution | 9 MPixel |
| Angle of view with: | |
| • 1" sensor | 28.7° x 21.7° x 35.4° |
| • 2/3" sensor | 19.9° x 15° x 24.8° |
| • 1/1.8" sensor | 16.3° x 12.3° x 20.2° |
| • 1/2" sensor | 14.5° x 10.9° x 18.1° |
| • 1/3" sensor | 10.9° x 8.2° x 14.1° |
| • 1/4" sensor | 7.7° x 5° x 9.2° |
| Lens length | 57.5 mm |
| Lens diameter (max) | 42.0 mm |
| Lens mount | C-Mount |
| Filter thread object-side | M40.5 x 0.5 |
| Weight | 149 g |
| Ambient temperature | -20°C bis +50°C |
Drawings
Dimensional drawing in mm
Accessories for Lighting - VCH 1.8/25 - BC2518-9M
| Order number | Title | Description |
|---|---|---|
| Extension tubes | ||
| 2-90-415 | Extension ring 0.5 mm | 26 x 31 x 0.5 reduces the minimum object distance (MOD) |
| 2-90-416 | Extension ring 1.0 mm | 26 x 31 x 1.0 reduces the minimum object distance (MOD) |
| 2-90-410 | Extension tube set C-mount | consist of extension rings with each 0.5 mm, 1 mm, 5 mm, 10 mm, 20 mm and 40 mm |
| Lens adapter c-mount | ||
| 2-90-414 | CS to C-mount adapter 5.0 mm | for connecting C-mount lenses with CS-mount cameras, length: 5 mm |
| Neutral density filter | ||
| 2-91-250 | ND filter 3.0 M40.5x0.5 | optical density 3.0 - 0.1% transmission, f-stop reduction 10, filter thread M40.5x0.5 |
| 2-91-240 | ND filter 1.2 M40.5x0.5 | optical density 1.2 - 6.3% transmission, f-stop reduction 4, filter thread M40.5x0.5 |
| 2-91-230 | ND filter 0.6 M40.5x0.5 | optical density 0.6 - 25% transmission, f-stop reduction 2, filter thread M40.5x0.5 |
| Daylight blocking filter | ||
| 2-91-210 | IR filter M40.5x0.5 | long-pass filter from 830 nm, daylight absorbing filter, filter thread M40.5x0.5 |
| Polarising filters | ||
| 2-91-220 | Pole filter M40.5x0.5 | linear polarizing filter, range 420 nm - 780 nm, filter thread M40.5x0.5 |
| Colour filter blue | ||
| 2-91-288 | Colour filter blue M40.5x0.5 | band-pass filter, range 350 nm - 600 nm, filter thread M40.5x0.5 |
| UV Cut-Off Filter | ||
| 2-91-200 | UV blocking filter M40.5x0.5 | long-pass filter from 350 nm, usable as protective glass, filter thread M40.5x0.5 |
| Colour filter red | ||
| 2-91-268 | Colour filter red M40.5x0.5 | long-pass filter from 630 nm, red, filter thread M40.5x0.5 |
| Colour filter green | ||
| 2-91-301 | Colour filter green M40.5x0.5 | band-pass filter, range 430 nm - 620 nm, filter thread M40.5x0.5 |
| Colour filter yellow | ||
| 2-91-275 | Colour filter yellow M40.5x0.5 | long-pass filter from 530 nm, yellow, filter thread M40.5x0.5 |
