{"id":425,"count":6,"description":"<strong>Oscar van Leer (1914-1996)<\/strong>\r\n\r\n<img class=\"alignleft wp-image-1303 \" src=\"https:\/\/stichtinghistorischemicroscopie.nl\/wp-content\/uploads\/2016\/08\/Oldelft_van-Leer-Oscar.jpg\" alt=\"\" width=\"200\" height=\"200\" \/>\r\n\r\nOldelft was founded by Oscar van Leer in 1939, under the name \u201cN.V. Van Leers Optische Industrie\u201d.\u00a0 Van Leer was the son of Bernhard van Leer, multinational and circus manager. Soon after the founding of the company, World War II started and the family had to flee to the USA. The company survived, thanks to Fritsz Philips and the development of X-ray screen photography. They continued in operation under the name \u201cN.V. Optische Industrie \u2018De Oude Delft\u2019\u201d. In the 1970s, Oldelft took over Nedoptifa. Oldelft merged with Enraf-Nonius in 1990, becoming \u201cDe lft Instruments\u201d.\r\n\r\nThe Van Leer Group Foundation, still run by the Van Leer family, supports many charities worldwide.","link":"https:\/\/stichtinghistorischemicroscopie.nl\/en\/category\/oldelft-en\/","name":"OLDELFT","slug":"oldelft-en","taxonomy":"category","parent":0,"meta":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>OLDELFT Archieven - Stichting voor Historische Microscopie<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/stichtinghistorischemicroscopie.nl\/en\/category\/oldelft-en\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"OLDELFT Archieven - Stichting voor Historische Microscopie\" \/>\n<meta property=\"og:description\" content=\"Oscar van Leer (1914-1996) Oldelft was founded by Oscar van Leer in 1939, under the name \u201cN.V. Van Leers Optische Industrie\u201d.\u00a0 Van Leer was the son of Bernhard van Leer, multinational and circus manager. Soon after the founding of the company, World War II started and the family had to flee to the USA. The company survived, thanks to Fritsz Philips and the development of X-ray screen photography. They continued in operation under the name \u201cN.V. Optische Industrie \u2018De Oude Delft\u2019\u201d. In the 1970s, Oldelft took over Nedoptifa. Oldelft merged with Enraf-Nonius in 1990, becoming \u201cDe lft Instruments\u201d. The Van Leer Group Foundation, still run by the Van Leer family, supports many charities worldwide.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/stichtinghistorischemicroscopie.nl\/en\/category\/oldelft-en\/\" \/>\n<meta property=\"og:site_name\" content=\"Stichting voor Historische Microscopie\" \/>\n<meta property=\"og:image\" content=\"https:\/\/stichtinghistorischemicroscopie.nl\/wp-content\/uploads\/2016\/08\/Oldelft_van-Leer-Oscar.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"CollectionPage\",\"@id\":\"https:\/\/stichtinghistorischemicroscopie.nl\/en\/category\/oldelft-en\/\",\"url\":\"https:\/\/stichtinghistorischemicroscopie.nl\/en\/category\/oldelft-en\/\",\"name\":\"OLDELFT Archieven - Stichting voor Historische Microscopie\",\"isPartOf\":{\"@id\":\"https:\/\/stichtinghistorischemicroscopie.nl\/#website\"},\"breadcrumb\":{\"@id\":\"https:\/\/stichtinghistorischemicroscopie.nl\/en\/category\/oldelft-en\/#breadcrumb\"},\"inLanguage\":\"en-US\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/stichtinghistorischemicroscopie.nl\/en\/category\/oldelft-en\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/stichtinghistorischemicroscopie.nl\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"OLDELFT\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/stichtinghistorischemicroscopie.nl\/#website\",\"url\":\"https:\/\/stichtinghistorischemicroscopie.nl\/\",\"name\":\"Stichting voor Historische Microscopie\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/stichtinghistorischemicroscopie.nl\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"OLDELFT Archieven - Stichting voor Historische Microscopie","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/stichtinghistorischemicroscopie.nl\/en\/category\/oldelft-en\/","og_locale":"en_US","og_type":"article","og_title":"OLDELFT Archieven - Stichting voor Historische Microscopie","og_description":"Oscar van Leer (1914-1996) Oldelft was founded by Oscar van Leer in 1939, under the name \u201cN.V. Van Leers Optische Industrie\u201d.\u00a0 Van Leer was the son of Bernhard van Leer, multinational and circus manager. Soon after the founding of the company, World War II started and the family had to flee to the USA. The company survived, thanks to Fritsz Philips and the development of X-ray screen photography. They continued in operation under the name \u201cN.V. Optische Industrie \u2018De Oude Delft\u2019\u201d. In the 1970s, Oldelft took over Nedoptifa. Oldelft merged with Enraf-Nonius in 1990, becoming \u201cDe lft Instruments\u201d. 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