Industrial telecentric lens related knowledge focus

Industrial telecentric lens is a kind of high-end machine vision lens, which refers to the lens whose main light is parallel to the lens light source. It usually has relatively superior image quality and is especially suitable for dimensional measurement applications. There are several ways of object side telecentric, imaging side telecentric, bilateral telecentric and so on.

1. Why is the price of industrial telecentric lens high and what are the advantages?

Answer:Industrial Telecentric lenses are designed based on Telecentric principles, with low distortion and no Angle error. They are suitable for industrial measurement applications, so their price is higher than normal CCTV lenses. Industrial telecentric lens has coaxial lens design, providing different working distance, different magnification for choice.

2, industrial telecentric lens why low rate lens price is high?

Answer: A Telecentric lens has to be larger than its subject in order to reduce distortion and let in parallel light. A Telecentric lens with a low magnification lens usually has a large aperture. The cost of the required lens material is high, so it costs more.

3, coaxial light lens coaxial light, the middle brightness is brighter next to the dark, what is the reason? How to remedy it?

Answer: because the coaxial light lens projection light concentrated in the center of 5~6㎜ or so, if you look at the scope of a larger, the edge of the light is dark, this is a low rate coaxial light lens often phenomenon, can be added to the annular light source to make up for the light is not enough.

4. Can industrial telecentric lens be used with the 2x lens used by CCTV?

Answer: Yes, but the image quality deteriorates and the required light intensity becomes stronger. It is not recommended.

5, industrial telecentric lens specifications, labeling lens decomposition energy (analytical force) is what it means?

Answer: Lens resolution power is defined as the ability of the lens to see the edge of the smallest object clearly. If the resolution energy is lower than this, it will not be able to see clearly. You need to find another lens with higher resolution power, such as a high power microscopic objective lens.

6. Why can't the depth of field of industrial telecentric lens be very long?

Answer: industrial telecentric lens is designed to take into account the depth of field, magnification, aperture, working distance and other parameters to obtain the best point, so the depth of field are fixed values, such as to increase the depth of field, and sacrifice other parameters, will affect the quality of the lens.

7, If you want to see an object 1μm which lens can be used?

Answer:In order to see objects less than 1μm, we need to use a high power microscopic objective lens, but the working distance becomes very small (about 7㎜), the depth of field becomes very shallow.

8. Besides C-mount, can we provide other mount options for industrial telecentric lenses?

Answer: in addition to C-mount, there are diameter φ17 mm and diameter φ12 mm two kinds of mount for choice, these mount is for the pen TYPE CCD special lens.