6.Filters and Lenses
© 2023 China Daheng Group, Inc. Beijing Image Vision Technology Branch 109
Figure 6-3 Visible light cut-off filter transmittance curve for MER-203-30GC-P-L-F03
6.2.
Lens Selection Reference
DAHENG IMAGING is a professional supplier for images and machine vision devices in China. In addition
to industrial cameras, it also provides high-resolution, high-optical machine vision lenses for a wide range
of industrial cameras on the market.
In order to meet the requirements of machine vision for high resolution and low distortion, DAHENG
IMAGING released seven series of industrial lenses, resolution from 2 megapixels to 25 megapixels, with
small size, light weight, high resolution and low distortion rate, etc.
When choosing a lens, there are several factors to consider:
1)
Lens mount
According to the connection methods of the lens and the camera, the commonly used mounts are C,
CS, F, V, Leica, M42, M58, M72, M90, and so on
The MERCURY series GigE digital camera is equipped with a standard C-Mount. When selecting a
lens, select the lens of the same mount as the camera
2)
Max. Image Circle
The maximum sensor size that the lens image can cover. There are mainly 1/2", 2/3", 1/1.2", 1", 1.1",
4/3", and so on
When selecting a lens, make sure that the max. image circle of the lens is not smaller than the sensor
size of the digital camera
