Click and have a look at the 2nd photo in 2nd line at this site:
http://www.museeniepce.com/index.php/musee/presentation/Presentation-Le-relief-en-photographie
To me it seems there is a swinging 45° mirror about where that white dot up front is, projecting the image via a 2nd oblique mirror and further optics to produce a small aerial- or groundglass-image that can viewed via that oblique binocular or goggle.
What do you think of that camera?
http://www.museeniepce.com/index.php/musee/presentation/Presentation-Le-relief-en-photographie
To me it seems there is a swinging 45° mirror about where that white dot up front is, projecting the image via a 2nd oblique mirror and further optics to produce a small aerial- or groundglass-image that can viewed via that oblique binocular or goggle.
What do you think of that camera?