Theia Technologies | Ultra Wide Angle Megapixel Security Camera Lens

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Theia's interactive lens calculator

Lens resolution calculator

How far away can I be and still get the desired image resolution? What field of view can I cover with this focal length lens? What image resolution can I get with this camera & lens combination at this distance? Theia can help you answer these questions!

Theia introduces a new interactive lens calculator which relates the camera resolution and lens choices to field of view and image resolution. With the calculator, you can figure out which camera and lens combination is required for your application.

The detail in an image is determined by resolution. The shorter the lens focal length, the wider the field of view. Greater than about 90° most lenses start to show curved, barrel distorted images that compress the image at the edges. Rectilinear lenses such as those using Theia Technologies' Linear Optical Technology™ don't exhibit barrel distortion and thus maintain image resolution out to the edge of the image.

Calculating image resolution

"Resolution has many definitions, no one definition is correct for all situations. Resolution can be specified in pixels per foot or meter at the object. This mapping of the image sensor dimensions onto the object is most intuitive for calculating what level of detail can be seen in the image. Fundamentally it is the horizontal field of view of the camera divided by the horizontal number of pixels. This gives a pixels per foot number that can be related to image quality." Click here to read the full white paper.
Parking lot wideness

As shown in the picture above, an analog camera will have a very narrow field of view. Increasing the number of pixels of the camera will increase the field of view without changing the image resolution (pixels per foot).

Questions?

SY110 day/night megapixel ultra wide lenses

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New Product Showcase winner

SY125 ultra wide no distortion megapixel lens

www.TheiaTech.com to learn more about Theia's award winning ultra wide angle no distortion megapixel lenses. Theia's Linear Optical Technology^TM won SIA's NPS award at ISC West 2008

More Image - More Security - More Value

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