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Laser speckle reduction Lasers are very attractive for projection systems as they offer high contrast, a broad color spectrum and the advantage that images are always in focus. However, lasers do have the inherent problem of speckle: On optically rough surfaces, local interferences occur that manifest themselves as a grainy pattern of spots. This effect causes noise in projected images and reduces the resolution of measurement systems. Optotune offers a unique solution to this problem. Electroactive polymers (so-called artificial muscles) are used to oscillate a diffuser at a high frequency to average out the speckle patterns. This principle is extremely compact, completely free of mechanics and low in power consumption. Optotune’s Laser speckle reducer can be customized in terms of size, frequency, coatings and diffuser structure to fit a variety of applications:
Detailed information the LSR technology and how it is optimally used for your system can be found in the application notes below. Extended pixel resolution Optotune’s XPR®-25 is an Extended Pixel Resolution 4-position Actuator. With a clear aperture of about 25mm it is designed for use with Texas Instrument’s 0.47” DMD ECD and Pico chipset, to increase the resolution from HD to 4K. Main features:
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Extended pixel resolution 4-position actuator XPR®-25 |
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Electroactive polymer LSR |
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Reluctance force LSR |
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