| 摘要 |
A pair of lens frames 11 being more soft and flexible than a pair of lenses 10 include annular lens holders 15 to hold the lenses 10, gasket skirts 16 extending from rear edges of the lens holders 15 and a bridge 17 to connect the lens holders 15 to each other. The bridge 17 has a gradient in flexibility increasing from a middle zone of the bridge 17 bisecting the length of the bridge 17 toward the respective lens holders 15.
|
