Optical product and plastic lens for eyeglass

A technology for optical products and plastic lenses, applied in glasses/goggles, optics, nano-optics, etc., can solve problems such as ease of operation, and achieve the effects of maintaining durability, not affecting transparency, and excellent antistatic properties

Active Publication Date: 2012-04-18
TOKAI OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production method disclosed in Patent Document 3 does not mention the amount or ratio of carbon nanotubes contained in the carbon nanotube accumulation layer.
In addition, in Patent Document 4, although the opening ratio of carbon nanotubes is mentioned, there is a problem in terms of ease of work because advanced analysis is required.

Method used

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  • Optical product and plastic lens for eyeglass
  • Optical product and plastic lens for eyeglass
  • Optical product and plastic lens for eyeglass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0033] Next, Examples and Comparative Examples of the present invention are given. However, these examples do not limit the scope of the present invention.

[0034] (transmittance change amount and carbon nanotube amount per unit area)

[0035] The carbon nanotube dispersion liquid is uniformly applied to one surface of the lens substrate 1 so that the dispersion liquid does not scatter, and dried to form the carbon nanotube accumulation layer 2, and the transmittance of the obtained object is obtained. The amount of change and the amount of carbon nanotubes per unit area to get their correlation. For example, on the lens substrate 1 of a spectacle lens with a diameter of 75mm, 0.25ml (milliliters) of 0.0128wt% (percentage by weight) carbon nanotube ethanol dispersion is dropped, and when coating is carried out as above, the amount of change in transmittance 0.7%, the amount of carbon nanotubes per unit area is 1.39E-9g / mm 2 . It should be noted that the lens (optical prod...

Embodiment 2

[0041] In Example 2, the evaluation was performed on the performance change after being left for 7 days in an environment of 60 degrees Celsius (the same applies hereinafter) and 95% of the temperature.

[0042] (Formation of carbon nanotube stacked layer)

[0043] The carbon nanotube stacked layer 2 was formed using a spin coater. A carbon nanotube ethanol dispersion (manufactured by MeijoNanoCarbon Co., Ltd., 0.0128 wt%) was dropped onto the spectacle lens, rotated at a rotation speed of 1000 rpm for 30 seconds, and dried at 60 degrees for 15 minutes to remove the solvent, thereby forming Carbon nanotube accumulation layers 2 are formed on both surfaces of 1. In addition, the spectacle lens has the optical characteristics of a refractive index of 1.6, an Abbe number of 42, and a diopter of -2.00.

[0044] (formation of dura layer)

[0045] 206 g of ethanol, 300 g of methanol-dispersed titanium dioxide-based gel (manufactured by Nikki Catalyst Chemicals Co., Ltd., solid co...

Embodiment 1

[0049] The carbon nanotube accumulation layer, the hard coat layer, and the antireflection film are formed on both surfaces of the lens substrate 1 . In addition, the dropwise amount of the carbon nanotube dispersion liquid on each surface was set to 1.00 ml.

[0050] (Example 2)

[0051] In Example 1, the dropwise amount of the carbon nanotube dispersion liquid on each surface was set to 1.50 ml.

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Abstract

Provided is an optical product having an antistatic property which is improved without affecting the transmittance. An antistatic optical lens comprises carbon nanotube deposition layers (2) superimposed on front and rear surfaces of a lens substrate (1) of the optical lens as an optical product, wherein the amount of carbon nanotube per unit area in each surface is 9.93E-10g / mm2 to 3.97E-09g / mm2. Furthermore, a plastic lens for an eyeglass as an optical product, comprising the carbon nanotube deposition layer (2) on which a hard coat layer (intermediate layer 3) and an antireflection film (optical multilayer film 4) are superimposed is provided.

Description

technical field [0001] The present invention relates to an optical product such as a spectacle lens or a camera lens, or a plastic spectacle lens that does not affect light transmission and has excellent antistatic properties. Background technique [0002] An optical lens as an example of an optical product tends to attach dust and dust when it is charged with static electricity, and the frequency of wiping becomes high especially for spectacle lenses. In addition, if the lens is wiped with dirt or dust attached, the dirt or dust will be brought in, resulting in scratches on the surface of the lens. For other optical lenses, it is considered that the adhesion of dust or dust etc. will affect the image output and the like. As a general method for imparting antistatic properties, a method of providing a conductive coating layer on an optical lens is known, but this has problems in terms of coloring due to visible light absorption and durability. [0003] In order to solve th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/10B32B9/00G02B1/11G02C7/02B32B7/02B32B27/18B82Y20/00B82Y30/00G02B1/115G02B1/14G02B1/16G02C7/00
CPCG02B2207/101G02B1/115G02B2207/121G02C7/02B82Y20/00G02B1/16B32B7/02B32B9/00B32B27/18G02B1/041G02B1/10G02B1/11G02C7/022
Inventor 深川刚高桥宏寿
Owner TOKAI OPTICAL CO LTD
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