Piezo Aperture Displacement

A CCD array has just so many sensors on it. Each sensor picks up one pixel of information. In a static array, resolution is limited by the number and of active sensors. Light information falling in the microscopic spaces above, between and below each sensor is never picked up. Equally, to increase gross resolution these types of cameras use interpolation.

To achieve higher resolutions without interpolation requires moving the sensor array. One common approach is to use line scanning technology. In this approach a line of sensors moves down a focal plane. This approach has several shortcomings and risks.

First, since the sensors are lined up in rows that are separated by small spaces, any information falling between sensors is lost. Second, line scanning is slow and requires extensive prescanning and updating. Indeed, some captures can take up to 15 minutes for a single exposure. Third, the electric step motors and gears used to move the array can add signal noise to the image and are subject to wear and misalignment.

Jenptik's PAD technology overcomes the limitations of loosing light information that falls between sensors and the prolonged time it takes to capture images using line scanners by using a technique called Micro-Scanning.

In essence, each sensor on the array moves in TWO directions, x and y, to capture all the available light including those that fall between sensors. Instead of using motors and gears, Jenptik's PAD technology achieves extremely high precision through the use of two Piezoelectric crystals that displace the entire array in nano micro movements. Piezo crystals bend or vibrate when stimulated with electrical current. This precise displacement of the array allows the camera to increase its resolution range progressively from 512 X 387 to 4491 X3480 pixels without interpolation and with incredible speed. . File sizes range from 600k to 48.9 in RGB format and up to 63MB in CMYK. This entire process takes between 1 and 22 seconds depending of which resolution the user selects and the type of computer in use.

Remember, the movement is entirely electronic thus eliminating sources of added signal noise and ensuring long reliable use: thus, Piezo (the crystals that move the array) Aperture (the array itself) Displacement (the 2 direction movement of the array and resulting pixel over lapping).

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