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Optical layered composite having coating thickness below threshold and application thereof in augmented reality

A technology of composite materials and optical layers, applied in optics, optical components, instruments, etc.

Active Publication Date: 2020-02-28
SCHOTT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical challenge was to meet the requirements of good real-world imagery, good overlay imagery, and good abrasion resistance all at the same time

Method used

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  • Optical layered composite having coating thickness below threshold and application thereof in augmented reality
  • Optical layered composite having coating thickness below threshold and application thereof in augmented reality
  • Optical layered composite having coating thickness below threshold and application thereof in augmented reality

Examples

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example 1

[0338] With 1 layer (Table 2), 2 layers (Table 3), 3 layers (Table 4), 4 layers (Table 5), 5 layers (Table 6), 6 layers (Table 7), 7 layers (Table 8) Coated optical layered composites of 8 or 8 (Table 9) coating layers were prepared as follows. First, a circular wafer having a diameter of 150 mm and a thickness of 300 μm is provided. The raw materials are provided according to the table and are available from Schott AG. The front side of the wafer was cleaned with 130 kHz ultrasonic waves for 200 seconds in a deionized water bath at 40°C. Then, the wafer was dried in air at 60° C. for 500 seconds. A surface that is almost free of foreign particles is thereby obtained. Mount the wafer on the evaporation dome in the vacuum chamber of the Leybold APS 1104 and add the appropriate coating material to the evaporator. Reduce the pressure of the vacuum chamber to 1×10 -3 Pa. According to the layers shown in Table 1 to Deposition at a rate of 60eV with ion energy. Table 1 show...

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Abstract

In general, the present invention relates to an optical layered composite, in particular for use in an augmented reality device. In particular, the invention relates to an optical layered composite and a process for its preparation, a device comprising the optical layered composite and a process for its preparation, and the use of an optical layered composite in an augmented reality device. The present invention relates to an optical layered composite comprising: i.) a substrate having a front face, a back face, a thickness ds between the front face and the back face and a refractive index ns,ii.) a coating applied to the front face, the coating comprising 1 or more coating layers, wherein, for at least one wavelength [lambda]g in the range from 390 nm to 700 nm, the coating satisfies thefollowing criterion E. either v.>nc< ns; or vi.>nc> ns, nc is the mean refractive index of the coating layers, weighted by thickness; dc is the total thickness of the coating; thicknesses are determined in a direction perpendicular to the front face; and k=[lambda]g / 4[phi].

Description

technical field [0001] In general, the present invention relates to an optical layered composite, particularly for use in augmented reality devices. In particular, the present invention relates to an optical layered composite material and its preparation process, a device containing the optical layered composite material and its preparation process, and the use of the optical layered composite material in an augmented reality device. Background technique [0002] Augmented reality is a highly active field of technology serving a range of use areas such as entertainment, healthcare, education, construction and transportation (to name a few). In contrast to the related field of virtual reality, augmented reality typically focuses on the tight integration of multimedia information with real-world sensory input by selectively overlaying digital images onto eyeglass windows. The technical challenge was to meet the requirements of good real-world imagery, good overlapping images,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/10G02B27/01
CPCG02B1/10G02B27/0101G02B1/115G02B27/0172G02B2027/0112G02B2027/0118G02B2027/012G02B2027/0174G02B2027/0178G02B2027/0194G02B27/095G02B27/1073G02B27/142
Inventor J·U·托马斯T·达姆F-T·雷特斯K·纳特曼
Owner SCHOTT AG