Cam structure for zoom lens barrel assembly
作者： Kazunori Ishizuka , Maiko Takashima , Takamitsu Sasaki , Hiroshi Nomura
DOI:
关键词: Lens (geology) 、 Barrel (horology) 、 Group (periodic table) 、 Mechanism (engineering) 、 Optics 、 Physics 、 Zoom 、 Focal length 、 Zoom lens
摘要: A cam structure for a zoom lens barrel assembly which includes first group including and second sub-lens groups, group; switching mechanism moving one of the groups away from other in short focal length photographing range, toward long range. The ring having front rear grooves each other. are determined according to following equation: C=B+(A−B)*K (1); wherein 0
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