Non-stationary correction of optical aberrations - optical aberrations

 2024-06-28 08:33:48

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Lenticularprinting

Optical lens

This creative outdoor lighting technique works by placing a spotlight behind the feature, aimed towards an adjacent wall.

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Micro lensArray

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Explore the fascinating world of optics! Optics manipulate and move light in order to have the light perform a certain task. In this workshop, you will use optics to build a hologram and a cellphone microscope. You will also create a polarized “stain glass” piece of art. Through these activities, you will discover that optics are everywhere, that they are an essential part to our everyday lives, and that they are vital components to emerging technologies, such as autonomous vehicles and augmented reality.

GRIN lens

Lenticular lens arrays are widely used in the printed display industry and in specialized applications of electronic displays. In general, lenticular arrays can create from interlaced printed images such visual effects as 3-D, animation, flips, morph, zoom, or various combinations. The use of these typically (spherical) cylindrical lens arrays for this purpose began in the late 1920's. The lenses comprise a front surface having a spherical crosssection and a flat rear surface upon where the material to be displayed is proximately located. The principal limitation to the resultant image quality for current technology lenticular lenses is spherical aberration. This limitation causes the lenticular lens arrays to be generally thick (0.5 mm) and not easily wrapped around such items as cans or bottles. The objectives of this research effort were to develop a realistic analytical model, to significantly improve the image quality, to develop the tooling necessary to fabricate lenticular lens array extrusion cylinders, and to develop enhanced fabrication technology for the extrusion cylinder. It was determined that the most viable cross-sectional shape for the lenticular lenses is elliptical. This shape dramatically improves the image quality. The relationship between the lens radius, conic constant, material refractive index, and thickness will be discussed. A significant challenge was to fabricate a diamond-cutting tool having the proper elliptical shape. Both true elliptical and pseudo-elliptical diamond tools were designed and fabricated. The plastic sheets extruded can be quite thin (< 0.25 mm) and, consequently, can be wrapped around cans and the like. Fabrication of the lenticular engraved mold extrusion cylinder required remarkable development considering the large physical size and weight of the cylinder, and the tight mechanical tolerances associated with the lenticular lens molds cut into the cylinder's surface. The development of the cutting tool and the lenticular engraved extrusion cylinder will be presented in addition to an illustrative comparison of current lenticular technology and the new technology. Three U.S. patents have been issued as a consequence of this research effort. The result has been since commercialized and is currently sold within the lenticular printing industry worldwide under license by patents holder Gary A. Jacobsen. Full details are available at www.LentiClearLens.com and www.JacoTech.com. Further advancements are continuing

Cylindrical lens

.003 of an inch matters......The screen has a an index other than Unity..... distance matters. 3D? 3D.... objects behind something come into view as you change viewing position...... 3D.....objects in the background. 3D motion?....single frame. Car..... Traveling down the road......where you stand viewing the lenticular......determines where the car is on the roadway, taken from 2and story.....the care was in motion as the lens was open. Focal plane was .003 Inch within the lenticular screen......not the FACE the screen. Each lenticule is an independent Camera, focusing to a LINE, that simple. Those lines have a WIDTH....... (this should be enough).....

2014111 — Ray optics (or geometrical optics), describes light traversal (propagation in terms of physics) in terms of "rays". The "ray" in geometric ...

Convex lens

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Fresnel lens

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Lenticular images are PROJECTED into the space in front of them........ focal view distance is very important. By Projected I am stating the focal point is in front of the lenticular screen. Viewing Angle and Distance are of huge importance.