9 public-domain matches

Lenses

Cover of Doubling the reading power in amblyopia by the crossed-cylinder 'reader'

Doubling the reading power in amblyopia by the crossed-cylinder 'reader'

George Milbrey Gould

Cover of Mechanische Nebenbeschäfftigungen für Jünglinge und Männer

Mechanische Nebenbeschäfftigungen für Jünglinge und Männer

Johann Christoph Friedrich Guts Muths

Cover of Ueber nicht-sphärische objektive ..

Ueber nicht-sphärische objektive ..

Martin Linnemann

Cover of Kail - Object Lenses for Binocular Telescopes, British Patent 22813 of 1895

Kail - Object Lenses for Binocular Telescopes, British Patent 22813 of 1895

Jules Kail

Cover of Steinheil - Lenses for Photographic Purposes, British Patent 12949 of 1895

Steinheil - Lenses for Photographic Purposes, British Patent 12949 of 1895

Rudolf Steinheil

Cover of IS/ISO 11979-1: Ophthalmic Implants – Intraocular Lenses, Part 1: Vocabulary

IS/ISO 11979-1: Ophthalmic Implants – Intraocular Lenses, Part 1: Vocabulary

Bureau of Indian Standards

Cover of IS/ISO 11979-2: Ophthalmic Implants – Intraocular Lenses, Part 2: Optical Properties and Test Methods

IS/ISO 11979-2: Ophthalmic Implants – Intraocular Lenses, Part 2: Optical Properties and Test Methods

Bureau of Indian Standards

Cover of IS/ISO 11979-5: Ophthalmic Implants – Intraocular Lenses, Part 5: Biocompatibility

IS/ISO 11979-5: Ophthalmic Implants – Intraocular Lenses, Part 5: Biocompatibility

Bureau of Indian Standards

Cover of Photographic lenses

Photographic lenses

Conrad Beck