Apparatus and method for fabricating hologram
First Claim
1. A hologram fabricating apparatus for fabricating interference stripes on a photoresist sheet to produce a hologram, comprising:
- a coherent light generator to provide a first coherent light and a second coherent light;
two micro-display devices having respectively a plurality of pixel elements laid thereon, and the first coherent light and the second coherent light projecting to the two micro-display devices, respectively; and
a telecentric system located between the micro-display devices and the photoresist sheet to converge the projecting coherent light on the photoresist sheet and generate the interference stripes;
wherein the pixel elements are adjustable individually to determine whether the first coherent light and the second coherent light projected to the pixel elements to be entered the telecentric system.
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Accused Products
Abstract
A hologram fabricating apparatus includes a coherent light generator, two micro-display devices and a telecentric system. The coherent light generator provides a first coherent light and a second coherent light. Each micro-display device has a plurality of pixel elements laid thereon. The first coherent light and the second coherent light project respectively to the two micro-display devices. The telecentric system is located between the micro-display devices and a photoresist sheet to converge the projecting light on the photoresist sheet to generate interference stripes. Each pixel element may be adjusted independently to determine whether the first coherent light and the second coherent light projected to the pixel element to be projected to the telecentric system.
4 Citations
12 Claims
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1. A hologram fabricating apparatus for fabricating interference stripes on a photoresist sheet to produce a hologram, comprising:
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a coherent light generator to provide a first coherent light and a second coherent light; two micro-display devices having respectively a plurality of pixel elements laid thereon, and the first coherent light and the second coherent light projecting to the two micro-display devices, respectively; and a telecentric system located between the micro-display devices and the photoresist sheet to converge the projecting coherent light on the photoresist sheet and generate the interference stripes; wherein the pixel elements are adjustable individually to determine whether the first coherent light and the second coherent light projected to the pixel elements to be entered the telecentric system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for fabricating hologram by producing interference stripes on a photoresist sheet through a hologram fabricating apparatus, the hologram fabricating apparatus including two micro-display devices and a telecentric system, each of the micro-display devices having a plurality of pixel elements laid thereon to control exposing position of the photoresist sheet, the telecentric system being located between the two micro-display devices and the photoresist sheet to converge light to generate the interference stripes, the method comprising the steps of:
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grouping pixels to be formed on the photoresist sheet according to the direction and interval of the interference stripes to be fabricated; adjusting the pixel elements on the two micro-display devices with respect to the pixels of the same group simultaneously based on the grouping result; adjusting the interval of the two micro-display devices and the rotational angle relative to the photoresist sheet to determine the direction and interval of the interference stripes; and providing two coherent lights to project respectively to the two micro-display devices, and recording the pixels of the same group on the photoresist sheet at one exposing process. - View Dependent Claims (11, 12)
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Specification