发明授权
US09454000B2 Aperture device and optical instrument 有权
光圈装置和光学仪器

Aperture device and optical instrument
摘要:
An aperture device includes: a board including an opening; a blade opening and closing the opening; and first and second receiving plates sandwiching the blade; wherein the first receiving plate includes a pressing portion partially pressing the blade toward the second plate.
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