|Size||Width 14, 0cm, temple 13.5cm lens size (center): 29mm in height X 54mm in width|
|Weight (frame)||20.8 g (only as for the frame)|
|Materials||A frame: Nickel alloy, plastic RAS tick
A lens: CR39-MFC
|The frequency||The upper lens
≪Sublentiform limb with frequency more than +2.0≫
The upper lens is not distant business, and the frequency of the middle business (I see approximately 2m very well) enters.※PC screens become easy to consider that the frequency for the middle enters at the upper part, and people usually see things to about 2m again. In addition, it is easy to get used to there being little Fra つきが when the participation frequency (differences between top and frequency below of the lens) is 1.5 degrees. To date it is objection, returned goods 0 by this setting.
It is important to choose the frequency that fitted you to choose convex glasses, the senior glass.
I prepared "a frequency indication list" to choose the lens which matched you in the thyme temple.
A lower letter30cm apart, please see it by the naked eye.
The place of the smallest character that I can read is the eyes cheap frequency.
One measure of a pupillary distance
It is far and near for two uses lens right cloth. Of the topI customize it so that the eyes of the visitor come in lower part +.
I move the green line of the projector by the value that I calculated from the visitor pupil distance that I had. The borderline of the eyes of the visitor is located. ※<< calculation method >> a hotchpotch level in value /2 = which pulled visitor pupil distance from distance of the center of the right lens part of the frame and the center of the left lens part (mm).
I decide the position of vertical eyes in consideration of the size of the window of the frame. I laminate the installation cup for the automatic lens processing machine that completed both sides adhesion seal to a lens.
I set a lens and a form to an automatic lens processing machine. A lens is automatically customized in form same as a form.
I fit a lens in a frame. I do the inspection that during + character mark of the right and left lens becomes according to pupillary distance of the visitor.
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