发明授权
US09383565B2 Tube shield lens unit 有权
管屏蔽镜头单元

Tube shield lens unit
摘要:
A tube lens unit for microscopes with achromatically corrective effect for the use with objectives that image an object to infinity and that have achromatic residual errors. The tube lens unit includes of at least two lenses with the properties: nP
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