The sensor size of the camera connected to the borescope increases, resulting in a broader field of view.

Conversely, it approaches the imagery observed directly by the naked eye.

The focal length of the adapter lens also varies.

We utilized a borescope with a diameter of φ4mm and a viewing angle of 0° for verification.

 

When employing an adapter lens with $f=18$ mm.

 

(1) Camera with a 1/1.8-inch image sensor.

 

 

 

（２）1/2.5インチ撮像素子のカメラ

 

 

 

■ｆ＝35ｍｍアダプタレンズ使用時

 

(1) A camera equipped with a 1/1.8-inch image sensor.

 

 

 

(2) A camera featuring a 1/2.5-inch image sensor.