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Lens

A lens, ethoxy dimethacrylate technology, applied in the field of lenses, can solve problems such as failure to pass the impact test, and achieve the effects of improving imaging clarity, performance, and safety

Inactive Publication Date: 2010-03-17
任荣花
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] http: / / www.mingyue.com / e06.htm website: Shanghai Mingyue Optical Glass Co., Ltd., titled "PMC resin lens", its formula is: diethylene glycol propylene dicarbonate Brite-55, ultraviolet absorber UV -5411, blue inorganic pigment B, red inorganic pigment R, diisopropylene peroxycarbonate IPP, resin lens with a refractive index of 1.552, and its dispersion coefficient reaches 42, but it cannot pass the US FDA impact test

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] test results

[0012] Inspection item Index Inspection result Conclusion

[0013] (1) Optical performance index

[0014] Vertex according to GB10810 Table 1 -0.02- +0.08 qualified

[0015] optical center and

[0016] Prism degree ≤0.25 0.00 Passed

[0017] Refractive index ±0.003 0.002 Pass

[0018] Dispersion coefficient ±4% -2.1% qualified

[0019] Visible light transmittance ≥90.0 90.2% pass

[0020] UV properties Comply with the provisions of GB10810 Comply with Qualified

[0021] (two), mechanical performance index

[0022] Impact Resistance FDA Standard Pass Pass

[0023] (3), Dimensions and surface quality

[0024] Meet the requirements of GB10810 Meet Qualified

[0025] (4), other

[0026] Yellow index ≤1.25 1.08 Passed

Embodiment 2

[0028] raw material name

Embodiment 3

[0030] raw material name

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PUM

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Abstract

The invention relates to a lens, which comprises the following components in percentage by weight: 97 to 98 percent of KA-55 (ethoxy-dimethyl acrylate), 1.1 to 1.3 percent of UV-31 (ultraviolet absorber), 0.03 to 0.1 percent of B-51 (blue inorganic pigment), 0.02 to 0.1 percent of R-51 (red inorganic pigment), 0.005 to 0.01 percent of HILVB-55 (demoulding agent), 0.5 to 1 percent of catalytic agent 1 (peroxyneodecanoate), and 0.3 to 0.5 percent of 3M [peroxide(2-ethyl acetate)tert-butyl]. By adopting the technical scheme, the resin lens of the invention has a refractive index of 1.545 and a dispersing coefficient of 42, and can effectively reduce an image aberration caused by lens edge dispersion and improve the image definition; and at the same time, the security of the lens is improved greatly because the lens can pass the FDA shock resistance test of United States.

Description

technical field [0001] The invention relates to an optical material, in particular to a lens. technical background [0002] At present, resin lenses are in a priority position in the competition of the glasses market because of their light weight, high transparency, impact resistance, easy molding, and dyeability. The most domestically produced and sold resin lenses are 1.499 and 1.56 refractive index series, of which 1.499 resin lenses have higher impact resistance than 1.56, a dispersion coefficient of 58, and less dispersion, but due to the low refractive index, the lenses are thicker. However, the dispersion coefficient of the 1.56 refractive index lens is 38, and the impact resistance cannot pass the US FDA test (a steel ball with a diameter of 16mm is freely dropped from a height of 1.27 meters to impact the convex surface of the lens, and the lens should not be broken). [0003] According to the search, http: / / www.jiangteng.com / products2.htm website: Shanghai Jiangte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/02G02B1/04
Inventor 任荣花
Owner 任荣花
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