Boulanger binoculars

By utilizaing the telescope with prism-inversion, devised in 1851 by Ignazio Porro (1795-1875), A. A. Boulanger succeeded in producing a binocular of an entirely new type in 1859. But he overlooked the possibility of increasing the distance between the objectives; Camille Nachet introduced this improvement in 1875, but his instruments did not meet with much popularity.
Source: 1911 EB, Vol. 3, Page 950

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Bionocular microscopes : In 1853 the American J. L. Riddell (1807-1867) devised his binocular microscope, which contained the essentials of Wheatstone's pesudoscope. F. H. Wenham, another constructor, did not at first succeed in avoiding the pseudoscopic effect, but, by the application of refracting dividing prisms, he subsequently arrived at orthoscopic representati...

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Abbe binoculars : The difficult manufacture of the glass for the prisms was overcome by E. Abbe, after the founding of the glass-works at Jena, who effected, independently of his predecessors, the wider separation of the objectives.

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Dutch Binoculars : The first binocular telescope, consisting of two telescopes placed side by side, was constructed in 1608 by Johann Lipperhey, the inventor of the ordinary or Dutch telescope. The subject was next taken up by the monks. The Capuchin Antonius Maria Schyrläus (Schyrl) de Rheita (1597-1660) described in 1645 the construction of double terrestria...

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