TRLcam is happy to announce the addition of Eltima Electronic Light Barriers to the growing list of products.  Eltima is a small company based in Germany that manufacturers high speed active infrared camera triggers.

From the Eltima web site:

Light barriers

First of all, before going into detail, we would like to give a little introduction concerning the term for our main product: the light barriers. In German there is a clear term for the device while we found it difficult to find a distinct and precise term for our products in English. The ones we found that got closest were the following: photoelectric sensor, photoelectric barrier, light beam, infra-red beam, light trigger, infrared light trap, camera trigger, infrared sensor, infrared camera trigger. However, we had the feeling that an infrared camera trigger can also simply be some sort of remote control, which does not have much to do with our products. Therefore we decided to go for “light barrier“ and “photoelectric camera trigger“, which are the terms you will find in all the texts. As a result of that we would like to apologize if you are familiar with a different term (please feel free to let us know) and hope that you will nevertheless find your way around.

Through-way barrier

Reflex light barrier

Light barriers are opto-electronic systems that are able to detect the interruption of a light beam. They consist of a light source, which works as a transmitter, a receiver as well as an electronic evaluation unit.

Depending on the design we distinguish between a reflex light barrier and a through-way light barrier. In the case of the one-way light barrier the transmitter is installed directly opposite to the receiver. Depending on the distance these two are either placed in the same housing or in two separate ones. Furthermore they can be used with both joint and separate power supply.
In reflex light barriers, the transmitter, the receiver and the power supply are all placed within one housing. The light beam is reflected by a reflector. For this purpose one can either use a plane mirror or a retro-reflector. However, flat mirrors are more difficult to handle since they require an absolutely precise alignment, which is particularly important over long distances. Retro-reflectors, generally referred to as reflectors, consist of a large number of small triple prisms. They are very convenient because they reflect the light directly back to the direction it came from. Thus they are easier to operate due to the fact that they do not have to be positioned precisely perpendicular to the light beam.

Check out the Eltima web site for more information and amazing photographs captured using the Eltima light barrier.

TRLcam will be stocking the Eltima products for quick delivery.  For more information please press here..

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