Record Details

Name/TitleStereote­le­scope ‘Stéréo-Project’, wood­en ver­sion with orig­i­nal stor­age box

About this objectThe Stéréo-Project was pre­sent­ed to the French Pho­to­graph­ic Soci­ety dur­ing its meet­ing of Novem­ber 6, 1903. Its oper­a­tion was as follows:
In stereo­scop­ic pro­jec­tions, the two images are pro­ject­ed side by side onto a screen. To per­ceive the stereo­scop­ic effect, each per­son must use a spe­cial view­ing device that allows the two images to be super­im­posed, just as in an ordi­nary stereoscope.
The Demaria Broth­ers Stéréo-Project, in its exter­nal appear­ance, resem­bles a con­ven­tion­al stere­o­scope. How­ev­er, it con­tains two sets of mir­rors. Two fixed mir­rors inclined at 45° and two mov­able mir­rors rotat­ing around two axes, oper­at­ed simul­ta­ne­ous­ly by a met­al knob. At the front are two mov­able diaphragm screens, adjust­ed by a lever, which can be moved clos­er togeth­er or far­ther apart.
Two eye­pieces with­out lens­es serve to guide the observer’s vision. Depend­ing on the dis­tance and posi­tion of the observ­er, and the size of the pro­ject­ed images on the screen, the angle of the mir­rors must be adjust­ed so that the two images over­lap in the viewer’s per­cep­tion, cre­at­ing the stereo­scop­ic effect.
(from: Moulin­ier et al. His­toires de vision­neuses stéréo­scopiques français­es. Limo­ges, 2025, p. 57. Author’s translation.)

Place MadeFrance

Mak­erDemaria Frères

Mak­er RoleMan­u­fac­tur­er

Date Madec. 1905

Peri­od1893–1939

Sub­ject and Asso­ci­a­tion Descrip­tionThe Demaria com­pa­ny was found­ed in 1858 by Isidore Demaria and became Demaria Frères when it was tak­en over in 1897 by his three sons: Jules, Hen­ri, and Paul.
Their field was pho­tog­ra­phy, rang­ing from sin­gle-image and stereo­scop­ic cam­eras to pro­jec­tion equip­ment and lab­o­ra­to­ry appa­ra­tus. In this con­text, they intro­duced in 1903 an unusu­al device designed for the pro­jec­tion of stereo­scop­ic images. Research to locate a cor­re­spond­ing patent has so far been unsuccessful.

Object TypeStere­o­scope

Sub­ject and Asso­ci­a­tion Key­wordsFR 339572 (Demaria Frères, P. Stempert)

Object num­berM‑SH078

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