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Method for printing marking on slide view spectacle glass to show dioptric effect involves drafting pattern containing marking comprising scale for determining corresponding spot and then printing pattern on glass
Method for printing marking on slide view spectacle glass to show dioptric effect involves drafting pattern containing marking comprising scale for determining corresponding spot and then printing pattern on glass
The method involves drafting a pattern containing the marking so that the marking comprises a scale for determining a spot on the glass which corresponds to the size of an insert of the slide glass. The pattern is then printed on the glass. Independent claim describes glass with convex front face, concave back face and pattern printed on either face to show close up reference marking indicating spot where dioptric effect of close up part of glass is to be measured.
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