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Zero parallax visual axis glasses for corneal pre-marking
专利权人:
Dan Smith
发明人:
Dan Smith
申请号:
US15351364
公开号:
US10092450B2
申请日:
2016.11.14
申请国别(地区):
US
年份:
2018
代理人:
摘要:
Zero parallax visual axis glasses for corneal pre-marking include a target light, an alignment light, a polarized lens and a short pass filter. In some embodiments the targeting light and/or alignment light are LEDs and/or configured to blink. In some embodiments the target light is red. In certain embodiments the alignment light is white. The polarized lens can be placed on a users non-dominant eye and block light originating from the target light and/or alignment light. The short pass filter can be configured to allow light from the target light to only pass through in one direction.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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