Helioplast

Region: Germany    Period: 1890–1930   
Helioplast, Germany
Helioplast, Germany
© Stereoscopy History

When folded closed, the Helioplast takes the form of a rectangular box. Opening the lid causes a shield, functioning as a blinder, to unfold. The lens panel is raised, revealing the holder for the stereoview. The holder plate can be moved to adjust the focus.

Related items: Blinder

Specifications:

Classification:
Hand-held / Single-view / Folding
Introduction:
1901
Construction:
Cardboard
System:
Open
Medium:
Paper
Format:
8.5 x 17
Lens:
Convex
Lens focus:
Yes
Inter-ocular adjustment:
No

Patents and registrations:

Number: 315785
Stéréoscope
Filing: 11-11-1901, Applicant(s): Siegfried Lederer. via: archives.inpi.fr

Further reading:

  • Wing, Paul. Stereoscopes: The first one hundred years (1996) , p. 208
Helioplast, Germany
Helioplast, Germany
© Stereoscopy History
Published: 27-05-2026