What is the C interface? What is a CS interface?

The origin of the word "C" is the initials of "cinema", and the origin of the C interface is the camera lens. At present, the C interface is the standard interface from 16 mm camera, TV camera and three-eye microscope. The C-interface lens provides a male thread to match the female port of the camera. The thread diameter is 1 inch (25mm), with 32 threads per inch, which is designed according to the standard of "ANSI B 1. 1".

* The focal plane distance of interface C is17.526 mm. ..

* The focal plane distance of CS interface is 12.52mm, and other parameters are the same as those of C-Mount adapter.

So a "C-port lens" can be converted into a "CS interface" with a "5mm connector ring of C/CS".

Simple distinction between lens C interface and CS interface

According to the classification of lens installation, all camera lenses are threaded. The lens of CCD micro camera is equipped with two industrial standards, namely C bayonet and CS bayonet. They have the same thread, but the distance from the lens to the photosensitive surface is different. The two main lens installation standards are C-type installation and CS-type installation.

They all have a line 1 inch long and look very similar. Their difference lies in the distance between the lens and the sensor after the lens is installed in the camera:

CS-mount: The distance from the image sensor to the lens should be12.5mm..

C-mount: The distance between the image sensor and the lens should be17.5mm. A 5mm washer (C/CS connecting ring) can be used to convert the C-type mounting lens into the CS-type mounting lens.

C-mount is the original standard and CS-mount is the upgraded version, which can reduce the manufacturing cost and reduce the sensor size. The vast majority of cameras and lenses on the market now adopt CS-mount standard. By using the C/CS connecting ring, the old C-mount lens can be installed on the camera with CS-mount interface. If the camera can't focus, it may be because the wrong lens type is used.

Characteristics of c-type interface

C-type interface has strict specifications in the world. According to the international standard "ANSI B 1. 1", the diameter of each thread of the C-type interface is 1 inch (25mm), that is, there are 32 threads per inch, and the distance from the installation datum plane of the C-type interface to the focal plane is also strictly specified as17.526mm..

Microscope interface characteristics

1. has wide applicability and is suitable for any brand of microscope; ?

2. Brand-new focusing technology, using center focusing technology and optical technology, making focusing faster and easier;

3. The image quality is high, which makes the camera shooting of the system more fixed and will not affect the image quality due to vibration;

4. Small design, compact and beautiful.

Application of c-type interface

Class c interfaces are mainly divided into U-TV 1.0XC, U-TV0.63XC and u-TV 0.5xc, which are now mainly used for the installation of the third eyepiece tube of a three-eye microscope, aiming at realizing the coupling between an optical microscope and digital imaging equipment. Microscope camera, digital SLR camera and digital card camera can all be connected to the microscope through C-type interface to realize microscopic image shooting.