Digitally measuring scopes using a high resolution encoder

Details Digitally measuring scopes using a high resolution encoder Digitally measuring scopes using a high resolution encoder

1995-07-17

1998-09-01

Chin, Tommy P.

Television

Special applications

With endoscope

348357, 600167, 356241, H04N 718

Patent

active

058017623

ABSTRACT:
A system for determining a dimension of a detail including an optical scope for producing an image of the detail, an image scaling device for providing a scaled image size, and a processor. The system also includes a video camera which is either within the optical scope or external to the optical scope. The optical scope includes a focusing device for adjusting a focal position of the image of the detail and a device for providing a focus position signal based a position of the focusing device. If the system includes an external video camera, the optical scope also includes a viewer for passing the image of the detail to a plane outside of the optical scope. The video camera optically is coupled with the viewer of the optical scope or with the image of the detail and produces a video signal of the detail from the image of the detail. The processor converts the focus position signal into an object distance signal, or a magnification signal, or both, and determines the dimension of the detail based on the scaled image size and based on the object distance signal, or the magnification signal, or both.

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