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Composite super lens, forming method thereof and dot matrix projection system

A projection system and super-lens technology, applied in lenses, instruments, projection devices, etc., can solve the need to reduce costs that are difficult to meet the needs of consumers for light and thin, the difficulty of improving the projection distance of dot matrix projection systems, and the low efficiency of diffractive optical elements, etc. problem, to achieve the effect of light weight, low cost and reduced energy consumption

Active Publication Date: 2022-08-05
SHENZHEN METALENX TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the diffractive optical element (DOE) has low efficiency and high energy consumption, which makes it difficult to increase the projection distance of the dot matrix projection system
[0003] On the other hand, the above-mentioned existing dot-matrix projection system requires at least three pieces of optical components, that is, at least two pieces of collimating lenses plus one piece of DOE, which is difficult to meet the needs of consumers for thinner and lighter equipment and equipment manufacturers. need to reduce costs

Method used

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  • Composite super lens, forming method thereof and dot matrix projection system
  • Composite super lens, forming method thereof and dot matrix projection system
  • Composite super lens, forming method thereof and dot matrix projection system

Examples

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example 1

[0135] This example is based on Image 6 The flow chart shown results in an embodiment that fuses the Collimator, Pattern Generator (DOE) and Diffractive Beam Splitter (BS) into one composite metasurface. Among them, the laser is a single-point laser with a full emission angle (Full-FOV) of 23°; the distance from the laser light-emitting surface to the composite metasurface is 2.85mm. The composite metasurface is a square with a side length of 1.16 mm, in which the nanostructure is Figure 9 selection shown. Figure 10 The phase diagram of the required collimator for the composite metasurface is given, Figure 11 The phase map of the required image generator (DOE) for the composite metasurface is given, Figure 12 The phase diagram of the diffractive beam splitter (BS) required for the composite metasurface is given, Figure 13 The actual phase diagram of the composite metasurface is given. Figure 14 The dot matrix projection diagram in the far field of Example 1 is give...

example 2

[0137] This example is based on Image 6 The flow chart shown results in an embodiment of the fusion of the Collimator (Collimator) and the Pattern Generator (DOE) into one composite surface. Among them, the laser is a single-point laser with a full emission angle (Full-FOV) of 23°; the distance from the laser light-emitting surface to the composite metasurface is 4.92 mm. The composite metasurface is a square with a side length of 2 mm, where the nanostructure is Figure 9 selection shown. Figure 15 The phase diagram of the required collimator for the composite metasurface is given, Figure 16 The phase map of the required image generator (DOE) for the composite metasurface is given, Figure 17 The actual phase diagram of the composite metasurface is given. Figure 18 The dot matrix projection diagram in the far field of Example 2 is given, and the field angles in the H, V, and D directions are 40°, 40°, and 54.5°, respectively.

[0138] To sum up, the present applicati...

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Abstract

The invention relates to a composite super lens, a forming method thereof and a dot matrix projection system. The composite super lens comprises a substrate and structural units arranged in an array mode, and the structural units are composed of nanostructures periodically arranged on the surface of the substrate. And the nano structure is arranged in a way that the phase of the composite super lens meets the following conditions: the phase is a collimation super surface light phase and the phase is a diffraction super surface light phase. According to the invention, a collimator, a pattern generator / diffractive optical element (DOE) and a duplicator / diffractive beam splitter (BS) which are further included are integrated on one metasurface by utilizing the characteristic that the metasurface can perform continuous regulation and control on wavefront, so that the effect of replacing a plurality of traditional devices with one composite super lens is achieved. The metasurface has the advantages of simple structure, light weight, low cost and the like, so that the scheme is suitable for a low-cost, compact and light dot matrix projection system.

Description

technical field [0001] The application belongs to the field of optical equipment, and in particular relates to a compound superlens, a method for forming the same, and a dot matrix projection system. Background technique [0002] The dot matrix projection system in the prior art is composed of a light source, a collimating lens group and a diffractive optical element (Diffractive Optical Element, DOE). Among them, the diffractive optical element (DOE) has low efficiency and high energy consumption, which makes it difficult to improve the projection distance of the dot matrix projection system. [0003] On the other hand, the above-mentioned existing dot matrix projection system requires at least three optical components, that is, at least two collimating lenses plus one DOE, which is difficult to meet consumers' needs for lighter and thinner equipment and equipment manufacturers. The need to reduce costs. SUMMARY OF THE INVENTION [0004] In view of the defects of the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B3/00G02B27/18G03B21/14
CPCG02B3/00G02B27/18G03B21/142
Inventor 郝成龙谭凤泽朱瑞朱健
Owner SHENZHEN METALENX TECH CO LTD