Jahnholtz

Region: France    Period: 1890–1930    Tag: Richard
Stereoscope type: Hand-held » Multi-view
Jahnholtz 45 x 107, Richard, France
Jahnholtz 45 x 107, Richard, France
© Virtual Stereoscopic Museum →

The Stéréoscope Systeme Jahnholtz was likely the first hand-held multi-view stereoscope for glass stereoviews. The instrument was named after its designer, Jahnholtz. The viewer was not included in the catalogues of Jules Richard, and it is unclear whether the device existed only as a limited number of prototypes or was produced on any meaningful scale.

Operation:
The glass stereoviews are loaded into the upper section of the viewer. The lid contains a spring that presses the slides into place when the device is closed. By operating a plunger, a stereoview is brought in front of the lenses and subsequently moved to the lower section of the viewer.

Related items: Multi-view stereoscope  Richard, Jules

Specifications:

Introduction:
1898
Maker:
Jules Richard
Support:
Glass
Format:
45 x 107
Lens focus:
Yes
Inter-ocular adjustment:
No
Note :
The number of glass slides depends on their thickness.

Patents:

Number: 280799
Système de stéréoscope à triple compartiment et tirette d'escamotage
Filing: 23-08-1898, Applicant(s): Jahnholtz, Jules Richard. via: archives.inpi.fr

Number: 280799
certificat d'addition au brevet pris le 23 août 1898, pour un système de stéréoscope à triple compartiment et tirette d'escamotage
Filing: 13-02-1899, Applicant(s): Jahnholtz, Jules Richard. via: archives.inpi.fr

Further reading:

  • Wing, Paul. Stereoscopes: The first one hundred years (1996) , p. 182
Jahnholtz 45 x 107, Richard, France
Jahnholtz 45 x 107, Richard, France
© Virtual Stereoscopic Museum →
Published: 30-03-2026    Last modified: 31-03-2026