PURPOSE: To provide a twin-line finder easy to view even under direct sunlight and capable of photographing while viewing by both eyes by providing a transparent block provided with a reflection mirror which is installed obliquely to the screen of an image display device and providing a foldable hood on the transparent block.

CONSTITUTION: The transparent block 1 provided with the reflection mirror 2 is provided on the screen 4 of a thin type image display device 3, the foldable hood 7 is provided on the transparent block 1, and an image recording/reproducing device 6 is provided on the rear side of the image display device 3. Then, the inclined reflection mirror 2 is provided with the transparent block 1, and the top surface part of the transparent block 1 is inclined. Furthermore, the top surface part and the surface in close contact with the screen 4 are made transparent, and all other surface are made sieldable for light. A video emitted from the screen 4 is reflected on the reflection mirror 2 facing the screen 4, and then, the video enters both eyes after passing through the hood 7. Also, the reflection mirror 2 is inclined, so that the video can be viewed while keeping the head away from the hood. The user photographs by a camera part 8 while viewing the image on the reflection mirror 2 from the oblique upper back of the thin type image display device 3 which is vertically placed.