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Wearable device

A wearable device, plastic lens technology, applied in instruments, optics, image data processing, etc., can solve the problems of eye damage, heavy glass substrate, inconvenient to wear for a long time, etc. Effect

Active Publication Date: 2022-03-15
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, a glass substrate with a high refractive index is used as a lens substrate for wearable devices, and the glass substrate has the advantages of high refractive index and high light transmittance, but when the glass substrate is broken, the glass substrate may cause damage to the user's eyes. Severe injury, and the glass base is not convenient to wear for a long time due to its heavy weight

Method used

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Examples

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Effect test

Embodiment 1

[0104] A plastic lens substrate having an optical refractive index of 1.70 at a wavelength of 532 nm and a thickness of 0.5 mm was produced by a mold casting method in which a buffer spacer was applied using MGC Lumiplus LPJ-1102 as a material. The thickness deviation of the produced plastic lens substrate was 0.5%.

[0105] In addition, the fabricated plastic lens substrate was cut into 50 × 50mm 2 , and then apply a UV-curable imprint resin at a thickness of 1 μm on one surface. A film-type mold was pressed, in which a diffractive light guide pattern with a pitch of 425 nm, a depth of 125 nm, and a duty ratio of 0.4 was formed on the mold in the form of an engraved film, and then exposed to UV to produce a diffractive light guide pattern on a plastic lens substrate. Diffractive light guide unit for light pattern.

[0106] The plastic lens substrates according to Examples 2 to 4 and Comparative Examples 1 to 3 and the diffractive light guide units on the plastic lens substr...

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Abstract

The present invention relates to a wearable device that can be lighter than a wearable device employing a glass substrate as a lens substrate, relatively safer when broken, and smaller in terms of the volume of the product.

Description

technical field [0001] This specification claims priority and benefit from Korean Patent Application No. 10-2017-0173187 filed with the Korean Intellectual Property Office on December 15, 2017, the entire contents of which are incorporated herein by reference. The present invention relates to wearable devices. Background technique [0002] Wearable devices such as virtual reality devices or augmented reality devices form diffractive light guide patterns in lenses such as general glasses to display desired images to users. Generally, a glass substrate with a high refractive index is used as a lens substrate for wearable devices, and the glass substrate has the advantages of high refractive index and high light transmittance, but when the glass substrate is broken, the glass substrate may cause damage to the user's eyes. Serious damage, and the glass base is not convenient to wear for a long time due to its heavy weight. [0003] Therefore, research into a wearable device in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/01G02B1/04G02B27/42
CPCG02B27/0172G02B5/1852G02B2027/0123G02B1/045G02B1/041G02B27/42G02B27/4205G06T19/006
Inventor 金惠珉金永锡金芙儆长影来辛富建秋素英
Owner LG CHEM LTD