About this document
Night Vision Focus Improvement Device by ja2ja1 is a document available to read on EtoBox.
This patent describes a device for improving focus when viewing objects using a night vision instrument. The device attaches to the night vision instrument and includes a panel that can be positioned in front of the lens. The panel has an aperture that allows viewing a near object in focus while limiting additional light. Positioning the panel in front of one lens of binoculars allows focusing on a near object with that lens while viewing farther with the other lens.
- Author
- ja2ja1
- Language
- EN