div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=2019-01-31-the-1880s-they-called-it-the-periskop-lens-but-it-was-soon-su-persededhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: · 2019-01-31 · the 1880s They called it the Periskop lens but it was soon su- perseded by the Cooke Triplet and 4-element Iëssar designs Nowadays lenses are designed by loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentssitereader033viewer20220420025e6e513e22daf0613924af48html5thumbnails1jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imageimg data-url=2019-01-31-the-1880s-they-called-it-the-periskop-lens-but-it-was-soon-su-persededhtmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: · 2019-01-31 · the 1880s They called it the Periskop lens but it was soon su- perseded by the Cooke Triplet and 4-element Iëssar designs Nowadays lenses are designed by loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentssitereader033viewer20220420025e6e513e22daf0613924af48html5thumbnails2jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=3Page 3button div class=ts-imageimg data-url=2019-01-31-the-1880s-they-called-it-the-periskop-lens-but-it-was-soon-su-persededhtmlpage=3 data-page=3 class=ts-thumb lazyload alt=Page 3: · 2019-01-31 · the 1880s They called it the Periskop lens but it was soon su- perseded by the Cooke Triplet and 4-element Iëssar designs Nowadays lenses are designed by loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentssitereader033viewer20220420025e6e513e22daf0613924af48html5thumbnails3jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=4Page 4button div class=ts-imageimg data-url=2019-01-31-the-1880s-they-called-it-the-periskop-lens-but-it-was-soon-su-persededhtmlpage=4 data-page=4 class=ts-thumb lazyload alt=Page 4: · 2019-01-31 · the 1880s They called it the Periskop lens but it was soon su- perseded by the Cooke Triplet and 4-element Iëssar designs Nowadays lenses are designed by loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentssitereader033viewer20220420025e6e513e22daf0613924af48html5thumbnails4jpg width=140 height=200 divdiv
