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Yamamoto kogaku a core technology to control the light based on industrial, sports, and medical protection has been making eyewear

YAMAMOTO JIS protection glasses binocular type SN-200 type plastic frame (nonstandard-size mail products)

YAMAMOTO JIS protection glasses binocular type SN-200 type plastic frame (nonstandard-size mail products)
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$ 26.85 (¥ 2,938)
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Product Information

-JIS (T8147 protective glasses)
-Lens quality: parallel /0.16cm less refraction and 0 ± 0.12 m-1)
-Lens material: Polycarbonate PET (hard lenses)
-Angle adjustable length adjustment or feature UV cut / lens replacement / up and down visor side w / vine vines
-Frame: plastic
-Frame colour: Blanc
-Size; W147×H54 x D 138-145 mm-weight: 36 g
Completed Replacement lens and eyepiece
Type Format Symbol Symbol
Spectacle-type SLR type HA-1 Hak-1
Twin- HA-2 Hak-2
Front type SLR type HB-1 HBK-1
Twin- HB-2 HBK-2
Goggles SLR type HC-1 HCK-1
Twin- HC-2 HCK-2
Parallelism (1)
If you joined at a right angle and parallel degree lens light passes through the lens to shift angles (error); You need JIS with 0.16 cm or less regulated, that is 16 cm error in point of light passing through the lens is 1 m away.
(2) optical power
Ability to light being refracted and refractive power lens, focusing (diffusion), JIS, 0 ± you must keep the system do not feel to 0.12 m and has a low refractive power lens.
(3) non-point aberration times
Aberrations of astigmatic refractive power of the lens center than around prescribed lens accuracy was not JIS measured refractive power in the range of 40 mm in diameter around the geometric centre of at least four points and, between any two lines of longitude difference in refractive power is 0... ± 0.12 m and provided.
Transparency refers to the percentage of the light through the lens in the eye feel. When looked at in reverse is 100% through lenses, meaning dark state is at 0% the lens light totally impervious to JIS standard with more than 85% regulated in the brightness of the lens is almost transparent, you must.
 Safety lenses
(1)-high impact
It prescribes and free-falling steel ball diameter 22 mm, weight approx. 44 g from 1.27-1.30 m height, do not crack or crack the lens and lens does not disengage from the frame.
(2) heat-resistant
55 ± 2 ° C in every 30 minutes and 23 ± must sometimes kept the 3 ° C to at least 30 minutes without deformation, parallelism, inflection and astigmatism meets the above lens specifications and quality standards.
 High-performance-safety Pete Lloyd lens
 Various types of lens after the impact resistance test
 And Pete Lloyd lens?
Pete Lloyd lens has excellent optical characteristics, based on our unique lens polishing technology and surface treatment with polycarbonate resin with the highest impact resistance of plastic properties, scratch-resistant lenses. Especially shock resistance compared with glass or CR-39 lens has superior performance. Also relieves tiredness of the eyes due to damaged ships for Pete Lloyd lenses have UV absorption.

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