The CS-Mount standard is the same as the C-Mount standard, but with a reduced flange distance of 12.526mm. A CS-Mount camera can be modified to accommodate C-Mount lenses with the use of a 5mm extension tube between the lens and camera. A CS-Mount lens may appear to be compatible with a C-mount camera because it will thread onto it. However, a CS-Mount lens cannot be used with a C-Mount camera because the lens will focus the image at a location inside the flange and in front of the sensor.

Cs mountcanon

The C-Mount standard is one of the most common lens mount types in machine vision. The C-Mount standard features a thread 1” in diameter with 32 threads per inch (TPI). The C-Mount flange distance is 17.526mm. It is ideal for many industrial applications, as the threaded mount provides a robust, controlled interface between the camera and lens.

Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Cs mountlenses

The quality of the collimated beam may not be fantastic. And it depends on how the light is launched into the fiber. If the incident light has a narrow angular dispersion, and the fiber is short and/or of very good quality with few bends, then the light coming out will have a low angular dispersion. But if the incident light is converging at an angle close to the NA of the fiber, then your analysis should be ok.

Cmountvscs mount

First, the NA is defined in free space, not inside the fiber. So, NA = 0.22 means that is the NA in air. Therefore, the angle is $sin(\theta) = 0.22 \rightarrow \theta = 12.7 deg$. [no need to divide by the index of refraction]

$$ n\sin(\theta)=NA \\ \theta = \arcsin(\frac{.22}{1.4914}) \\ \frac{.5 \cdot 38 [mm]}{ \tan(\theta)}=\left \{ \text{focal length} \right \} $$

Please select your shipping country to view the most accurate inventory information, and to determine the correct Edmund Optics sales office for your order.

The F-Mount standard is a bayonet-style mount common with line scan cameras and large format cameras. It was developed by Nikon and is used on 35mm (43.3mm) SLR photography cameras. The F-Mount standard features a diameter of 44mm and a flange distance of 46.5mm. The spring-loaded bayonet connection provides ease of use for photographers but can contribute to camera-lens misalignment in industrial applications.

CS-mount camera

The S-Mount is a common mount in surveillance CCTV cameras and board-level cameras and is used with M12 lenses. This smaller mount type has a metric thread and pitch of M12x0.5 and no standardized flange distance.

Next, NA refers to the half angle, not the full angle (see: http://en.wikipedia.org/wiki/Numerical_aperture ). So: $ tan(\theta) = \frac{D/2}{f} = \frac{38 mm/2}{f}$ which gives you $f = \frac{17.5 mm}{tan(\theta)} = 77.6 mm$ .

The TFL-Mount was designed for use with APS-C (27.9mm) sensors that are much too large for use with a C-Mount, but are still too small for an F-Mount. This mount can be thought of as a larger C-Mount; it has thread dimensions of M35x0.75mm, and the same flange distance as the C-Mount: 17.526mm. The TFL-Mount provides the same robustness as the C-Mount but for larger sized sensors, without the drawbacks of the F-Mount. Similar to the TFL-Mount is the TFL-II Mount which was designed for APS-H (35mm) sensors and consists of the same 17.526mm flange distance but with M48x0.75 thread dimensions

Finally, please appreciate that collimation is identical to imaging at infinity. What this means in practice is two-fold

There are many ways to interface a lens to a camera. Lenses and cameras have several standard mount types that feature either threads or a bayonet-type mount. A lens needs to not only be mechanically compatible with the mount type; it also must have the same flange distance as the camera. Flange distance or flange focal distance is the distance from the mounting shoulder to the image plane.