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US 2013/0293976 A1Published application
Light intensity adjuster
AssigneeNew Asia Optical Industry Co., Ltd.
InventorYoshio Takada
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AssigneeNew Asia Optical Industry Co., Ltd.
InventorYoshio Takada
Estimating the term…
Provision of a light intensity adjuster adapted for use of an infrared ray cutoff filter as necessary for high integrity, without getting excessive in thickness. A light intensity adjuster includes a light intensity adjusting mechanism adapted for variations in opening area to adjust the intensity of transmitted light, and a filter switching mechanism made up to move an infrared ray cutoff filter to a position of opening at the light intensity adjusting mechanism and displace the infrared ray cutoff filter from the position of opening, and has a recess shape portion provided at a separation member facing the infrared ray cutoff filter at the filter switching mechanism to accommodate the infrared ray cutoff filter to be free from interferences.
A light intensity adjuster including an iris mechanism adapted for variations in opening area to adjust an intensity of transmitted light, and a filter switching mechanism configured to move a filter to a position of opening at the iris mechanism and displace the filter from the position of opening, the light intensity adjuster comprising an accommodation space provided at an opposite side member facing a moving member at the filter switching mechanism to accommodate the moving member to be free from interferences.
Dependencies are inferred from the claim text.