Vicon Valkyrie cameras lens specifications
- G Roberts
- Andy Roberts (Deactivated)
- Ben Freeman (Unlicensed)
- Edward Levack (Deactivated)
The following topics provide technical specifications for the lens that is used in Vicon Valkyrie cameras. For further details, contact Vicon or your nearest agent or distributor.
Valkyrie cameras are fitted with a lens that is suitable for the system use you specified on ordering. The lens's suitability is determined by various factors, including the focal length, which defines the Field of View (FOV), and the aperture range. The latter affects the amount of light seen by the image sensor and also governs the depth of field, the distance from the camera where the image is in focus.
Vicon Valkyrie cameras contain no user-serviceable components. For all servicing, and any alterations, you must return the camera to Vicon. Any attempt by you or any third party to alter or repair a Valkyrie camera may invalidate its warranty as well as causing electrical hazards.
Camera lens specification
The following tables provide technical specifications for the physical characteristics of the lens available for VK26, VK16, and VK8 cameras.
For Angle of View details for this lens, see Angle of view information for Vicon Valkyrie cameras.
| Component | Specification |
|---|---|
| Focal Length | 9.4 mm to 18.8 mm |
| Format | 4/3" |
| Aperture (f-stop) range | 0–10 (see Vicon Valkyrie aperture values) |
| External dimensions | 60 mm (diameter) x 111.5 mm (length) |
| Weight | 0.496 kg |
Note
Vicon Valkyrie cameras are shipped with a focal length of 12 mm.
Vicon Valkyrie aperture values
This table provides the calculated true aperture values for the marked aperture numbers on a Valkyrie varifocal lens. Due to the limitations of the test equipment, no values are available for the aperture number 10.
| Marked aperture number | True aperture value (f-stop) at 18.8 mm focal length | True aperture value (f-stop) at 9.4 mm focal length |
|---|---|---|
| 0 | 2.94 | 1.93 |
| 1 | 3.16 | 2.08 |
| 2 | 3.57 | 2.36 |
| 3 | 4.01 | 2.71 |
| 4 | 4.61 | 3.14 |
| 5 | 5.38 | 3.64 |
| 6 | 6.32 | 4.32 |
| 7 | 7.70 | 5.40 |
| 8 | 9.99 | 6.97 |
| 9 | 13.89 | 10.09 |
Angle of view information for Vicon Valkyrie cameras
The following table gives information on the Angle of View at full resolution for the VK26, VK16, and VK8 cameras.
| Camera variant | Focal length for 72° to 54° angle of view |
|---|---|
| VK26 | 9.4 mm to 12.5 mm |
| VK16 | 9.4 mm to 12.5 mm |
| VK8 | 11.5 mm to 16.4 mm |
Note
Vicon Valkyrie cameras are shipped with a focal length of 12 mm.
The Valkyrie lens was designed to give 72° to 54° angle of view for each sensor but also works outside of those focal lengths. The secondary optics for the strobe spreads the light for the wider angle of view; without the secondary optics, the spread matches the narrower angle of view. Also note that:
- For focal lengths that give an angle of view wider than 72°, there is no strobe light coverage.
- For focal lengths that give an angle of view of 54° or narrower, we recommend that you do not use the secondary optics.
