LandOfFree - US Patents - Listing for Optical: systems and elements,Absorption filter

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Laser beam strop

Optical: systems and elements – Absorption filter – Fluid

Patent

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Laser light optical limiter

Optical: systems and elements – Absorption filter

Reexamination Certificate

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Laser protection system

Optical: systems and elements – Absorption filter – Superimposed or series

Reexamination Certificate

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Laser protection window using holographic optical element and ch

Optical: systems and elements – Absorption filter – Superimposed or series

Patent

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Lens module

Optical: systems and elements – Absorption filter – Filters in optical parallel

Reexamination Certificate

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Lens mount accessory system

Optical: systems and elements – Absorption filter – With support or frame

Patent

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Light amount adjusting device, and optical device using the...

Optical: systems and elements – Absorption filter – Neutral or graded density

Reexamination Certificate

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Light controlling device and process for controlling light trans

Optical: systems and elements – Absorption filter

Patent

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Light filter apparatus of an image scanning device

Optical: systems and elements – Absorption filter – With support or frame

Patent

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Light filter using glass ceramics

Optical: systems and elements – Absorption filter

Reexamination Certificate

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