How to Select an Industrial C-Mount Lens for Machine Vision?
We advise C-mount if you use only a few lenses in your application or if you use a camera with an image sensor of 2/3 "or larger.
What are its advantages?
Suitable for all our image-sensors
You can set the aperture (iris)
You can set the focus
You can attach the iris and focus by means of screws
You can easily and securely mount the lens
The lens is very light sensitive
The only disadvantage is the size (relatively large) and the price. This lens is the most expensive version of machine vision lenses that you can place on an industrial vision camera.
What is a CS Mount Lens?
A CS mount lens is a lens that is often used in security cameras. It can only be used on a CS-mount camera. When ordering our machine vision camera you also have the option to provide the camera with CS-mount. The difference between C-mount and CS-Mount is that the lens mount of the camera with a CS-mount is 5mm shorter. A CS lens must be 5 mm shorter to the image-sensors than C-mount. It is possible, by means of an adapter (5mm ring), to use a C-mount lens on a CS-mount vision camera. However, it is not possible to use a CS mount lens on a C-mount vision camera. That is because in that case the lens will not be close enough to the image sensor.
What are the characteristics of a CS mount lens?
It’s very affordable
You can set the focus;
Usually you can’t adjust the iris;
You can easily and securely mount the CS lens;
Regular new models where the old lenses go EOL, unless large orders of 2000-5000 are placed.
Due to a poorer predictability of the delivery reliability of CS-mount lenses, we do not offer this standard in our online store. We only offer this for volume projects from 100 pieces per year. The prices of this lens usually vary between 8 and 25 euros per piece. In addition, we have the possibility to make adjustments to the iris. If you are interested in this lens, please let us know.
What is an M12 and S-Mount Lens?
A M12 lens, also called S-mount lens, is the most compact lens for a vision camera. For example, it can be used in medical equipment and compact handheld devices. The S-mount lens is very small and is often used on compact board-level cameras. Do you want to use this lens on our machine vision camera? Then it is best to purchase a CS-mount camera. You also need a CS to M12 adapter and a M12 Lockring to secure the lens. The lens can be used with a vision camera that has a sensor size of 1/3 ", 1 / 2.5", 1 / 2.3 ", 1/2" or 1 / 1.8 ".
We have chosen not to sell cheap M12 lenses, but the more expensive high quality M12 lenses with little to no distortion. More expensive M12 lenses are suitable for very high resolution cameras and large image sensors (up to 1 / 1.8 "). Cheap M12 lenses often have a lot of geometric distortion and are only suitable up to a sensor size of 1/3".
Which machine Vision Lens should I purchase?
GeT Lenses has an assortment of different types of lenses. When selecting the correct machine vision lens, we recommend the following:
If you have a machine vision application with low volumes or a camera with a sensor larger than 1/1.8" we recommend the use of a C-mount lens.
If you develop a volume product in which the dimensions of the lens are critical, a M12 lens is the best choice. The camera sensor must not exceed 1 / 1.8 ".
If you develop a volume product in which the cost of the lens is critical, then both a M12 lens or CS-mount lens are a good choice. Again, the camera sensor must not exceed 1/1.8 ".
Our machine vision lenses do not have a guaranteed life cycle. We are in direct contact with the Manufacturer and can therefore monitor the expected life cycle. As soon as we known that a lens will become unavailable in the near future, we will timely inform our customers and offer a successor or alternative lens.