G - Physics – 01 – N
Patent
G - Physics
01
N
88/16
G01N 21/87 (2006.01) G02B 7/20 (2006.01)
Patent
CA 2027560
The present invention relates to an instrument for observing the brilliance of jewels, especially of diamonds, and a method of photographing them with this instrument. The instrument of this invention is composed of a lower tubular portion compris- ing a non-transparent material and an upper tubular portion comprising a semi-transparent material, and a magnifying observ- ation lens can be furnished on the upper end part of said upper tuhular portion in accordance with using purposes of the instru- ment. The semi-transparent upper tubular portion can move slidably with respect to the lower tubular portion. The diamond is positioned on a placing part within the lower tubular portion, and an observer studies it from the upper end part of the upper tubular portion. According to this instrument, the semi-trans- parent upper tubular portion adjusts appropriately the light directing to the diamond, and as a result, it is possible to observe characteristic patterns corresponding to the diamond brilliance. Further, the photographing method of this invnetion is to take photographs of diamonds within the lower tubular portion with a camera from the upper side of the upper tubular portion of the instrument, and it serves to judge the diamond brilliance more clearly than the conventional photographs of diamonds.
Swabey Ogilvy Renault
Yamashita Kinsaku
Yamashita Mashayo
LandOfFree
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