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Good Quality Imaging Lenses - Telecentric Lenses – ChuangAn

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Good Quality Imaging Lenses - Telecentric Lenses – ChuangAn Detail:

The telecentric lens is mainly designed to correct the parallax of the traditional industrial lens, and it can be in a certain distance range, so that the obtained image magnification will not change, which is a very important application for the case that the measured object is not on the same surface.

Through a special lens design, its focal length is relatively long, and the physical length of the lens is usually smaller than the focal length.

Characteristics of telecentric lenses

Its characteristic is that it can make distant objects appear larger than their actual size, so distant scenery or objects can be photographed clearer and more detailed.

Telecentric lenses bring a qualitative leap to machine vision precision inspection based on their unique optical characteristics: high resolution, ultra-wide depth of field, ultra-low distortion, and unique parallel light design.

Telecentric lenses are widely used in scenes such as sports events, wildlife and nature photography, and astronomical observations, because these scenes often require shooting or observing objects from a long distance. Telecentric lenses can bring distant objects “closer” while maintaining the clarity and detail of the picture.

In addition, due to the long focal length of telecentric lenses, they can achieve background blur and shallow depth of field, making the subject more prominent when shooting, so they are also widely used in portrait photography.

Basic classification of telecentric lenses

Telecentric lenses are mainly divided into object-side telecentric lenses, image-side telecentric lenses and side-side telecentric lenses.

Object lens

Object telocentric lens is the aperture stop placed on the image square focal plane of the optical system, when the aperture stop is placed on the image square focal plane, even if the object distance changes, the image distance also changes, but the image height does not change, that is, the measured object size does not change.

Object square telecentric lens is used for industrial precision measurement, the distortion is very small, and the high performance can achieve no distortion.

Schematic-diagram-of-telecentric-light-path-in-object-direction

Schematic diagram of telecentric light path in object direction

Image square lens

The image-side telecentric lens places the aperture diaphragm on the object-side focal plane so that the image-side principal ray is parallel to the optical axis. Therefore, although the installation position of the CCD chip changes, the size of the projected image on the CCD chip remains unchanged.

Image-square-telecentric-light-path-diagram

Image square telecentric light path diagram

Bilateral lens

The bilateral telecentric lens combines the advantages of the above two telecentric lenses. In industrial image processing, generally only object telecentric lenses are used. Occasionally, telecentric lenses on both sides are used (of course the price is higher).

In the field of industrial image processing/machine vision, telecentric lenses generally do not work, so this industry basically does not use them.


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Good Quality Imaging Lenses - Telecentric Lenses – ChuangAn detail pictures

Good Quality Imaging Lenses - Telecentric Lenses – ChuangAn detail pictures


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The very rich projects management experiences and one to one service model make the high importance of business communication and our easy understanding of your expectations for Good Quality Imaging Lenses - Telecentric Lenses – ChuangAn , The product will supply to all over the world, such as: Liverpool, Brisbane, Florida, Our company now has many department, and there have more than 20 employees in our company. We set up sales shop, show room, and product warehouse. In the meantime, we registered our own brand. We've got tightened inspection for quality of product.
  • The company account manager has a wealth of industry knowledge and experience, he could provide appropriate program according our needs and speak English fluently.
    5 Stars By Karen from Estonia - 2018.06.18 17:25
    This company has the idea of better quality, lower processing costs, prices are more reasonable, so they have competitive product quality and price, that's the main reason we chose to cooperate.
    5 Stars By Marguerite from Canada - 2018.09.23 17:37
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