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Conventional autofocus lenses are considerably slower and the wear on the mechanics is considerable. For this reason, they are reluctantly used in machine vision.

is a writer of news summaries about executive-level business activity in the government contracting sector. Her reports for ExecutiveBiz are focused on trends and events that drive the GovCon industry to include commercial technologies that private companies are developing for federal government use. She contributes news content to ExecutiveBiz’s sister sites GovCon Wire and ExecutiveGov.

Raytheon Technologies' Collins Aerospace business has awarded Intevac a $5M contract to produce sensor technology for integration onto a night vision system being developed to help U.S. Navy and Marine Corps pilots fly aircraft in low-light conditions.

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Not only barcode readers and intelligent cameras can be equipped with liquid lenses, but also conventional industrial cameras.

OPT's liquid lenses use the principle of two-phase liquid lens technology. Two immiscible liquids (an aqueous salt solution and a non-conductive oil) with different refractive indices are contained in a chamber. If an electrical voltage is now applied, the shape and curvature of a liquid is influenced and thus also the focal length of the entire liquid lens.

There, the barcode reader is usually permanently installed and the objects to be measured move quickly under the reader. An example of this are packages, which can have different sizes. In order to be able to read the barcodes on the packages, it is essential that the images of the codes are focused very quickly. Only sharp images can be evaluated reliably during production.

Collins Aerospace received a contract from the service branch in June to develop an EVA system that will include a helmet-mounted binocular display designed to help tiltrotor and rotary-wing operators view higher-resolution imagery and increase vision when they perform missions at very-low-light levels.

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contract awardsdigital night vision systemelectron bombarded active pixel sensorenhanced visual acuityGovconIntevacisie19 ebapsMarine CorpsU.S. Navy

The most significant advantage of liquid lenses is the fast focusing without mechanical wear. Working distances or focal lengths can be reliably changed within a few milliseconds. The control is electrical.

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It can be easily and flexibly installed and commissioned, thus best meeting the requirements of complex machine vision applications.

To meet customers´ needs for improving quality and efficiency, OPT's self-developed liquid lens has been newly launched. Under combined applications with smart code readers and industrial cameras, it exhibits outstanding performance, achieving instantaneous focusing and offering more flexibility in working distance. They are thus ideally suited for the 3C industry (computers, communications and consumer electronics), logistics and many other industries.

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OPT's newly developed liquid lens features a precision design with no moving parts, is small and compact, and can be used in miniaturized or space-constrained automation equipment.

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In applications where several images are taken in quick succession as test shots with different settings, the use of liquid lenses can lead to faster results. In addition, the number of images captured can be significantly reduced.

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Overall, with the use of liquid lenses, one achieves more freedom due to the variability of the working distance and the possibility of very fast and precise focus adjustment.

Intevac said Monday it will supply the company's ISIE19 Electron Bombarded Active Pixel Sensor to the Enhanced Visual Acuity development program funded by the Navy.

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Another advantage of liquid lenses is that they can be particularly compact. This means that code readers and intelligent cameras can be made even smaller.

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If the distance of the object to the liquid lens changes, the liquid lens technology allows the object to be tracked in space by permanent and instantaneous focusing. The object is thus in focus at any working distance.

Santa Clara, California-based Intevac built its digital sensor offerings with the patented EBAPS technology for potential use on the Department of Defense's avionic fighting platforms.

The iris in a camera lens expands and contracts to control the amount of light that can pass through. This affects both the brightness of the image and its ...

... consumer cameras for aerial surveying applications. Midwest Optical Systems Palatine, IL www.midopt.com. About the Author. LFW Staff. Published since 1965 ...

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The model for liquid lenses are biological eyes, such as those of humans. In a fluid-filled chamber, an elastic lens is deformed by muscle force (ciliary muscle) to achieve focusing.

Most applications for liquid lenses are found where codes need to be read quickly, but the codes may be present at different working distances. This can be the case in logistics and especially in applications on conveyor belts.

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Some lenses will feature two maximum apertures (shown as 1:4-5.6). This means that, as you zoom, the aperture capability changes. So at the shortest focal ...