{"id":15540,"date":"2025-08-18T19:27:26","date_gmt":"2025-08-18T19:27:26","guid":{"rendered":"https:\/\/www.automakers.cz\/?p=15540"},"modified":"2025-08-18T19:27:26","modified_gmt":"2025-08-18T19:27:26","slug":"student-fel-cvut-postavil-nejsilnejsi-prenosny-laser-v-evrope","status":"publish","type":"post","link":"https:\/\/www.automakers.cz\/?p=15540","title":{"rendered":"Student FEL \u010cVUT postavil nejsiln\u011bj\u0161\u00ed p\u0159enosn\u00fd laser v Evrop\u011b"},"content":{"rendered":"

Laser, kter\u00fd by i jen sv\u00fdm odrazem mohl po\u0161kodit zrak, a p\u0159esto vznikl jako studentsk\u00fd projekt v r\u00e1mci v\u00fduky. Na Fakult\u011b elektrotechnick\u00e9 \u010cVUT v Praze se v kurzu Jak vyrobit (t\u00e9m\u011b\u0159) cokoli studenti a studentky u\u010d\u00ed p\u0159ev\u00e1d\u011bt sv\u00e9 n\u00e1pady ve skute\u010dnost.<\/strong><\/p>\n

Ve sv\u011bt\u011b techniky \u010dasto sly\u0161\u00edme ot\u00e1zku: \u201eK \u010demu to bude?\u201c N\u011bkdy je ale mnohem d\u016fle\u017eit\u011bj\u0161\u00ed ot\u00e1zka jin\u00e1 \u2013 zvl\u00e1dnu to v\u016fbec postavit? Pr\u00e1v\u011b tu si kladou studenti Fakulty elektrotechnick\u00e9 \u010cVUT v Praze v r\u00e1mci kurzu Jak vyrobit (t\u00e9m\u011b\u0159) cokoli. V tomto voliteln\u00e9m p\u0159edm\u011btu se u\u010d\u00ed p\u0159etavit vlastn\u00ed n\u00e1pad \u2013 a\u0165 u\u017e praktick\u00fd, osobn\u00ed nebo \u00fapln\u011b bl\u00e1zniv\u00fd \u2013 do funguj\u00edc\u00edho prototypu.<\/p>\n

Jedn\u00edm z projekt\u016f leto\u0161n\u00edho ro\u010dn\u00edku je laser s v\u00fdkonem 125 watt\u016f \u2013 aktu\u00e1ln\u011b druh\u00fd nejsiln\u011bj\u0161\u00ed p\u0159enosn\u00fd laser na sv\u011bt\u011b. Jeho spu\u0161t\u011bn\u00ed mimo laborato\u0159 je zak\u00e1z\u00e1no, prodej nemo\u017en\u00fd. Ale vznikl\u00fd p\u0159\u00edstroj je uk\u00e1zkou toho, co se studuj\u00edc\u00ed nau\u010d\u00ed, kdy\u017e m\u00e1 prostor tvo\u0159it bez omezen\u00ed b\u011b\u017en\u00fdch o\u010dek\u00e1v\u00e1n\u00ed.<\/p>\n

T\u011bsn\u011b za sv\u011btov\u00fdm rekordem<\/strong><\/p>\n

Student Michal Var\u0161\u00e1nyi postavil v r\u00e1mci kurzu Jak vyrobit (t\u00e9m\u011b\u0159) cokoli (zkr\u00e1cen\u011b JVC) na FEL \u010cVUT laser s optick\u00fdm v\u00fdkonem 125 watt\u016f. Ten pat\u0159\u00ed mezi nejsiln\u011bj\u0161\u00ed p\u0159enosn\u00e9 lasery na sv\u011bt\u011b a v r\u00e1mci Evropy dr\u017e\u00ed prvenstv\u00ed. Jeho v\u00fdkon je tak vysok\u00fd, \u017ee by odraz paprsku od st\u011bny mohl zp\u016fsobit okam\u017eit\u00e9 oslepnut\u00ed. I proto je mo\u017en\u00e9 ho provozovat pouze v laboratorn\u00edch podm\u00ednk\u00e1ch a jeho prodej by byl neleg\u00e1ln\u00ed.<\/p>\n

\u201eCht\u011bl jsem postavit n\u011bco, co bude opravdu n\u00e1ro\u010dn\u00e9, a p\u0159itom kompaktn\u00ed. P\u0159enosn\u00e9 lasery jsou mezi bastl\u00ed\u0159i zn\u00e1mou v\u00fdzvou, ale v\u011bt\u0161inou nar\u00e1\u017eej\u00ed na limity v\u00fdkonu a nap\u00e1jen\u00ed. M\u016fj c\u00edl byl jednoduch\u00fd \u2013 zkusit, co v\u0161echno zvl\u00e1dnu,\u201c \u0159\u00edk\u00e1 Var\u0161\u00e1nyi.<\/p>\n

\"\"Laser vyu\u017e\u00edv\u00e1 v\u00fdkonnou modrou diodu (455 nm) a nap\u00e1jec\u00ed obvod s nitridem galia, kter\u00fd umo\u017e\u0148uje zmen\u0161en\u00ed rozm\u011br\u016f p\u0159i zachov\u00e1n\u00ed \u00fa\u010dinnosti. V\u00fdsledn\u00fd p\u0159\u00edstroj je p\u0159ibli\u017en\u011b t\u0159ikr\u00e1t siln\u011bj\u0161\u00ed ne\u017e b\u011b\u017en\u00e1 CNC laserov\u00e1 \u0159eza\u010dka a v\u00edce ne\u017e 125 000\u00d7 v\u00fdkonn\u011bj\u0161\u00ed ne\u017e laserov\u00e9 ukazov\u00e1tko (EU limit:1 mW).<\/p>\n

Var\u0161\u00e1nyi se s t\u00edmto za\u0159\u00edzen\u00edm dostal velmi bl\u00edzko sv\u011btov\u00e9mu rekordu v kategorii tzv. handheld laser\u016f, tedy p\u0159enosn\u00fdch laser\u016f nap\u00e1jen\u00fdch z baterie. V prvenstv\u00ed ho o t\u00fdden p\u0159edb\u011bhl americk\u00fd youtuber Styropyro, kter\u00fd zve\u0159ejnil laser o v\u00fdkonu 250 W.<\/p>\n

V\u00fduka, kde m\u00e1 smysl i \u201ezbyte\u010dnost\u201c<\/strong><\/p>\n

Kurz Jak vyrobit (t\u00e9m\u011b\u0159) cokoli se na FEL \u010cVUT u\u010d\u00ed od roku 2023. Studenti a studentky se zde u\u010d\u00ed digit\u00e1ln\u00ed v\u00fdrobu, 3D modelov\u00e1n\u00ed, \u0159ez\u00e1n\u00ed laserem, pr\u00e1ci s mikrokontrol\u00e9ry i dokumentaci. V\u00fdsledkem je v\u017edy sada men\u0161\u00edch v\u00fdrobk\u016f a jeden v\u011bt\u0161\u00ed projekt. Ka\u017ed\u00fd student v\u0161e dokumentuje a publikuje ve sv\u00e9m ve\u0159ejn\u00e9m portfoliu.<\/p>\n

\u201eC\u00edlem nen\u00ed, aby studenti vyv\u00edjeli komer\u010dn\u011b vyu\u017eiteln\u00e1 za\u0159\u00edzen\u00ed, ale aby se nau\u010dili p\u0159ev\u00e1d\u011bt n\u00e1pady do reality \u2013 a t\u00edm rozv\u00edjeli sv\u00e9 schopnosti. V obrazn\u00e9m smyslu jim pom\u00e1h\u00e1me naost\u0159it pilu, aby byli p\u0159ipraveni, kdy\u017e p\u0159ijde chv\u00edle pustit se do skute\u010dn\u00fdch v\u00fdzev,\u201c \u0159\u00edk\u00e1 garant kurzu dr. Ji\u0159\u00ed Zem\u00e1nek.<\/p>\n

Do kurzu tak pat\u0159\u00ed i projekty, kter\u00e9 zven\u010d\u00ed m\u016f\u017eou p\u016fsobit zbyte\u010dn\u011b nebo absurdn\u011b \u2013 nap\u0159\u00edklad ly\u017ea\u0159sk\u00e1 p\u0159ilba se st\u011bra\u010di a blinkry studentky Eli\u0161ky Roj\u00ed\u010dkov\u00e9. Video tohoto projektu vyvolalo na soci\u00e1ln\u00edch s\u00edt\u00edch siln\u00e9 reakce \u2013 pozitivn\u00ed i negativn\u00ed. \u201eMnoho lid\u00ed roz\u010diluje, kdy\u017e vid\u00ed studenty, jak si ‚hraj\u00ed‘, ale my v\u00edme, \u017ee pr\u00e1v\u011b tato hra je hlubok\u00fd v\u00fdukov\u00fd proces,\u201c dod\u00e1v\u00e1 Zem\u00e1nek.<\/p>\n

\"\"Kdy\u017e se sv\u011bt d\u00edv\u00e1<\/strong><\/p>\n

Laserov\u00fd projekt zaujal i odborn\u00edky na \u010dervencov\u00e9 mezin\u00e1rodn\u00ed konferenci FAB25 Czechia, jej\u00ed\u017e sou\u010d\u00e1st\u00ed byl i Fab Festival na pra\u017esk\u00e9m V\u00fdstavi\u0161ti. Var\u0161\u00e1nyi zde sv\u016fj laser (samoz\u0159ejm\u011b vypnut\u00fd) vystavil spolu s dal\u0161\u00edmi projekty student\u016f JVC.<\/p>\n

Festivalu se z\u00fa\u010dastnil tak\u00e9 profesor Neil Gershenfeld z MIT, zakladatel konceptu FabLab\u016f a autor p\u016fvodn\u00edho kurzu How to Make (Almost) Anything, kter\u00fd inspiroval vznik \u201e\u010desk\u00e9 verze\u201c JVC. \u201eChyt\u0159\u00ed a tvo\u0159iv\u00ed lid\u00e9 \u010dasto nedodr\u017euj\u00ed pravidla a t\u011b\u017eko zapadaj\u00ed do hierarchick\u00fdch \u0161kol nebo firem. My jsme vytvo\u0159ili prost\u0159ed\u00ed, kde pr\u00e1v\u011b takov\u00ed lid\u00e9 mohou r\u016fst a vzkv\u00e9tat,\u201c \u0159ekl Gershenfeld ve sv\u00e9 p\u0159edn\u00e1\u0161ce na konferenci FAB25. Neil Gershenfeld v r\u00e1mci n\u00e1v\u0161t\u011bvy Prahy zav\u00edtal mimo jin\u00e9 i na Fakultu elektrotechnickou. P\u0159ed studenty vystoupil s p\u0159edn\u00e1\u0161kou nazvanou From Bits to Atoms.<\/p>\n

Praktick\u00fd dopad \u2013 i u \u201enepraktick\u00e9ho\u201c projektu<\/strong><\/p>\n

P\u0159esto\u017ee Var\u0161\u00e1nyiho laser nen\u00ed vyu\u017eiteln\u00fd mimo laborato\u0159e, pro jeho autora m\u011bl z\u00e1sadn\u00ed v\u00fdznam. \u201ePoprv\u00e9 jsem si vyzkou\u0161el simulaci obvod\u016f, nau\u010dil se navrhovat chlazen\u00ed, zjistil, jak velk\u00fd vliv m\u00e1 dokumentace. Te\u010f se chyst\u00e1m vyrobit kovov\u00e9 \u0161asi laseru na CNC \u0159eza\u010dce, co\u017e by bylo bez zku\u0161enost\u00ed z JVC extr\u00e9mn\u011b n\u00e1ro\u010dn\u00e9,\u201c uzav\u00edr\u00e1 Var\u0161\u00e1nyi.<\/p>\n

Jeho p\u0159\u00edb\u011bh ukazuje, \u017ee v\u00fduka nemus\u00ed nutn\u011b sm\u011b\u0159ovat k okam\u017eit\u00e9mu praktick\u00e9mu v\u00fdsledku. M\u016f\u017ee ale vytvo\u0159it technick\u00e9 sebev\u011bdom\u00ed, kter\u00e9 studenty vybav\u00ed na cel\u00e9 roky dop\u0159edu.<\/p>\n

\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

Laser, kter\u00fd by i jen sv\u00fdm odrazem mohl po\u0161kodit zrak, a p\u0159esto vznikl jako studentsk\u00fd…<\/p>\n","protected":false},"author":2,"featured_media":15541,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[40,46],"tags":[],"class_list":["post-15540","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technologie","category-vzdelani"],"_links":{"self":[{"href":"https:\/\/www.automakers.cz\/index.php?rest_route=\/wp\/v2\/posts\/15540","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.automakers.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.automakers.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.automakers.cz\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.automakers.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=15540"}],"version-history":[{"count":3,"href":"https:\/\/www.automakers.cz\/index.php?rest_route=\/wp\/v2\/posts\/15540\/revisions"}],"predecessor-version":[{"id":15547,"href":"https:\/\/www.automakers.cz\/index.php?rest_route=\/wp\/v2\/posts\/15540\/revisions\/15547"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.automakers.cz\/index.php?rest_route=\/wp\/v2\/media\/15541"}],"wp:attachment":[{"href":"https:\/\/www.automakers.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=15540"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.automakers.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15540"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.automakers.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15540"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}