Strands manufactures LED light bars with the highest quality standards. LED lights for trucks boast ruggedness, waterproof qualities, energy efficiency, ...

The focal length is the optical distance between the source of light to the camera's sensor. Learn more about this intricate photography concept today.

Teledyne Adimec is an ISO 9001:2015 certified medium- sized company that designs and produces reliable industrial cameras in small batches to meet customer demands at global OEMs. We serve three strategic markets. – Machine Vision, Healthcare and Global Security.

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2004728 — They don't work on the left eye, but the vision in the right's better so the combination of left lens / pinholes works better than anything else ...

Analytically, the focal length is described by the lens maker's equation: 1/f = (n - 1)(1/R1 + 1/R2), where R1 and R2 are the radii of curvature, f is the focal ...

To use smaller and even lower cost optics, it is attractive to go below the 1/2” sensor size, for instance 1/3” CCD image sensors.  Not only does the image sensor performance go down, but the available optics quality also decreases.

1/3” CMOS image sensors can offer good low light performance, but 1/3” CMOS sensors utilize a rolling shutter as compared to global shutter available in CCD and larger CMOS image sensors.  Currently rolling shutter is not well received in the industrial and military applications as a blurring effect occurs with movement.  Global shutter CMOS is more complex and will take further development to shrink for smaller pixels.

High-end applications, such as long range targeting or in very low light, which are moving to full-HD resolution will still require 2/3” sensors.  Over the last few years, there have been dramatic improvements in Qe and read noise of image sensors to make 1/2” full-HD sensors with the sensitivity required for many applications.  In parallel with the sensor improvements, there have been many developments in 1/2” long focal range optics and zoom optics as a necessary complement.

Our 5mm wide angle strobing LED Christmas and event lights are the newest trend in the market of LEDs. Featuring 50 random strobing LEDs per set spaced 6" ...

In theory, bigger pixels on full-HD CCD image sensors are better for global security applications because they are more sensitive for improved low light performance.  The drawback is that bigger optics are required so size, weight, power, and cost (SWaP-C) requirements are challenged.  As many systems are upgrading from standard definition to full-HD cameras or adding HD daylight cameras for full motion video, the question is how to find the optimal balance.

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Discover the intricate beauty of the macro world with our specialized lenses. Explore macro photography at its finest with Henry's.

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For upgrades, this provides the option to use the same optical format, but have more pixels and more sensitivity.  This can be a cost-effective approach although new optics are still required.

Nella nostra ottica online raccomandiamo di tenere in considerazione i seguenti suggerimenti per acquistare occhiali online: 1. Scegli un filtro solare che ...

20211020 — The minimum focusing distance of a lens is the shortest or smallest distance that you can be from your subject and still have your subject in focus.

In the near future 1/3” full-HD image sensors may become more interesting as the optics are improved to allow for additional reductions in SWaP-C.  Further testing may show that rolling shutter is acceptable in outdoor, moving applications with higher frame rates, such as 100 fps, so that the blurring effect is not evident.

Fresnel Lenses are a compromise between efficiency and image quality. High groove density allows higher quality images, while low groove density yields better ...

Polarized visionoctopus

For now, 1/2” image sensors provide a sweet spot for many global security applications with acceptable sensitivity and the ability to use small, low cost optics.  As I mentioned, for more demanding applications, 2/3” image sensors may be required.

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Insects can perceive the pattern of polarized light (e-vector pattern) in the sky and use it as a compass. To accomplish this navigational task they employ a specialized part of the retina in which the polarization analysers (ultraviolet receptors) are arranged in a way that mimics, by and large, the distribution of e-vector directions in the sky. By sweeping this 'matched polarization filter's across the sky, the insect translates the complex spatial information provided by the celestial e-vector patterns into rather simple temporal modulations of summed receptor outputs. This mechanism provides a striking example of peripheral coding by matched filtering in sensory systems.

Not all of the 1/2” optics available meet the full MTF so the camera provides a better image quality than the lens.  The resulting image might not have the sharpness required by high-end applications.  The optics are getting better and better though.

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