{"id":9568,"date":"2026-03-04T15:09:01","date_gmt":"2026-03-04T14:09:01","guid":{"rendered":"https:\/\/rodervision.com\/prodotti\/led-ring-illuminators\/"},"modified":"2026-05-02T15:14:56","modified_gmt":"2026-05-02T13:14:56","slug":"led-ring-illuminators","status":"publish","type":"page","link":"https:\/\/rodervision.com\/it\/prodotti\/led-ring-illuminators\/","title":{"rendered":"Illuminatori LED ad anello"},"content":{"rendered":"\n

Ring light illuminators are the most widely used front illumination solution in industrial machine vision. Mounted coaxially around the camera lens, they deliver uniform, shadow-free light directly onto the inspected surface \u2014 eliminating the directional artifacts that single-source illuminators introduce at the edges of the field of view.<\/p>\n\n

RODER Vision’s DC series covers the full spectrum of ring light requirements: from compact low-angle configurations for surface defect detection and scratch visibility, to flat high-density matrix rings for space-constrained integration, to large-format models for wide-area circular inspection fields. The RDL1 series adds variable illumination angle for applications that require optical flexibility across multiple product variants.<\/p>\n\n

Tutte le serie sono disponibili in molteplici lunghezze d’onda \u2014 bianco, rosso, blu, verde e infrarosso \u2014 con driver integrati 24 Vdc, gestione termica HTTM e connettori M8 resistenti alle vibrazioni per l’integrazione OEM diretta.<\/p>\n\n

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Illuminatore ad anello con angolo medio. Alto contrasto per il rilevamento dei bordi e l’analisi dei difetti superficiali<\/strong><\/a><\/p>\n\n\n\n

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Profilo piatto, elevato flusso luminoso. Massima brillantezza dove lo spazio di installazione \u00e8 limitato.<\/strong><\/a><\/p>\n\n\n\n

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Lenti di focalizzazione integrate. Illuminazione concentrata per ispezioni precise e ripetibili<\/a><\/strong><\/p>\n<\/div>\n<\/div>\n\n\n\n

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Anello piatto ad alto flusso. Compiti di ispezione esigenti con illuminazione uniforme e priva di ombre.<\/strong><\/a><\/p>\n\n\n\n

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Anello a matrice, profilo piatto. LED ad alta densit\u00e0 in formato compatto, montabile sulla telecamera.<\/a><\/strong><\/p>\n\n\n\n

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\"Illuminatori<\/a><\/figure>\n\n\n\n

Illuminatore ad anello di grande formato. Copertura su ampia area con illuminazione uniforme e ad alta densit\u00e0.<\/strong><\/a><\/p>\n<\/div>\n<\/div>\n\n\n\n

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Illuminatore ad anello di nuova generazione. Matrice LED ad alto output con gestione termica avanzata.<\/strong><\/p>\n\n\n\n

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Nuova serie di anelli. Progettata per la prossima generazione di sistemi di ispezione automatizzati.<\/strong><\/p>\n\n\n\n

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\"Illuminatori<\/a><\/figure>\n\n\n\n

Angolo di illuminazione regolabile. Un solo illuminatore ad anello, configurabile per molteplici geometrie di ispezione.<\/strong><\/a><\/p>\n\n\n\n

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Cupola piatta compatta. Illuminazione uniforme e priva di ombre per superfici lucide e curve.<\/strong><\/a><\/p>\n\n\n\n

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Illuminazione diffusa avanzata. Elimina riflessi e abbagliamenti su pezzi lucidati o riflettenti.<\/strong><\/a><\/p>\n\n\n\n

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\"Illuminatori<\/a><\/figure>\n\n\n\n

Cupola piatta a basso profilo. Acquisizione priva di riflessi su superfici complesse e altamente riflettenti.<\/strong><\/a><\/p>\n<\/div>\n<\/div>\n\n\n\n

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Illuminatori LED ad anello per la visione artificiale industriale: guida tecnica e criteri di scelta<\/h2>\n\n\n\n

Ring light illuminators occupy a central role in automated optical inspection. Their concentric geometry around the camera optical axis produces uniform, diffuse-to-direct front illumination that is inherently free from the angular shadows and contrast gradients generated by off-axis light sources. For any inspection task where the camera is positioned above the part and the field of view is roughly circular or square, a ring light is the natural starting point for illumination design.<\/p>\n\n\n\n

Understanding the technical parameters of ring illumination \u2014 angle of incidence, flux density, spatial uniformity, and working distance \u2014 is essential to selecting the correct series and avoiding the most common integration errors.<\/p>\n\n\n\n

Angolo di illuminazione: la variabile primaria di scelta<\/h2>\n\n\n\n

L’angolo con cui la luce incide sulla superficie ispezionata determina quali caratteristiche della superficie diventano visibili e quali vengono soppresse. \u00c8 la variabile pi\u00f9 critica nella scelta dell’illuminatore ad anello.<\/p>\n\n\n\n

High-angle illumination<\/strong> (light striking the surface at a steep angle, close to perpendicular) produces bright, even illumination across the surface. It is the standard choice for label and print inspection, OCR and barcode reading, colour verification, and any application where overall surface visibility and uniform brightness matter more than texture accentuation.<\/p>\n\n\n\n

Low-angle illumination<\/strong> (light striking the surface at a shallow angle, nearly parallel to the surface plane) generates strong raking shadows across surface irregularities. Scratches, cracks, embossed text, mould seams, and micro-defects on otherwise flat surfaces become dramatically more visible under low-angle ring illumination. The DC2 series is specifically engineered for this geometry.<\/p>\n\n\n\n

Variable-angle illumination<\/strong> \u2014 as provided by the RDL1 series \u2014 allows the engineer to adjust the illumination angle mechanically during setup or across product changeovers. This is particularly valuable in flexible manufacturing cells where multiple part types share a single vision station.<\/p>\n\n\n\n

Profilo piatto vs. profilo standard: vincoli di integrazione<\/h2>\n\n\n\n

The mechanical format of the ring light directly affects integration feasibility. Standard-profile ring illuminators offer greater working distance flexibility but require more axial space between camera and part. Flat-profile matrix ring illuminators \u2014 the DC3, DC4, DC5, DC6, and DC7 series \u2014 reduce the axial footprint significantly, enabling close-proximity mounting in machines where vertical clearance is limited.<\/p>\n\n\n\n

For robot-mounted camera systems and end-of-arm inspection tools, flat-profile rings are almost always the correct choice. Their reduced mass and minimal protrusion beyond the camera body simplify both mechanical design and collision avoidance programming.<\/p>\n\n\n\n

Densit\u00e0 di flusso e applicazioni ad alta velocit\u00e0<\/h2>\n\n\n\n

High-speed production lines impose stringent demands on illuminator brightness. Industrial cameras operating at short exposure times \u2014 typically below 500 microseconds for fast conveyor applications \u2014 require proportionally higher light flux to maintain adequate image exposure. Standard continuous-operation ring lights may be insufficient at these speeds.<\/p>\n\n\n\n

The DC4 and DC5 series incorporate integrated focusing lenses and high-flux LED matrices that deliver concentrated, high-intensity output suitable for demanding continuous-operation applications. For applications requiring strobe or overdrive operation, an external pulse controller can drive compatible RODER ring illuminators at peak currents well above the continuous rating, generating burst luminous flux several times higher than the CW specification \u2014 with no thermal risk, provided duty cycle limits are respected.<\/p>\n\n\n\n

Scelta della lunghezza d’onda per l’illuminazione ad anello<\/h2>\n\n\n\n

La scelta della lunghezza d’onda LED negli illuminatori ad anello segue gli stessi principi di tutta l’illuminazione per visione artificiale: l’obiettivo \u00e8 il contrasto tra la feature di interesse e il materiale circostante.<\/p>\n\n\n\n

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  • Rosso (620\u2013640 nm)<\/strong> esalta il contrasto su materiali organici, gomma scura e testo stampato su substrati chiari. \u00c8 la lunghezza d’onda pi\u00f9 comunemente specificata per illuminazione ad anello general purpose.<\/li>\n\n\n\n
  • Blu (450\u2013470 nm)<\/strong> aumenta la risoluzione su feature superficiali fini e migliora il contrasto su materiali gialli, verdi e dorati. Ampiamente utilizzato nell’ispezione di PCB ed elettronica.<\/li>\n\n\n\n
  • Verde (520\u2013530 nm)<\/strong> offre un contrasto bilanciato su un’ampia gamma di materiali industriali ed \u00e8 efficace su superfici metalliche.<\/li>\n\n\n\n
  • Infrarosso (850 nm e oltre)<\/strong> penetra determinati coating, inchiostri e materiali di packaging, rivelando feature sottostanti invisibili sotto illuminazione nello spettro visibile.<\/li>\n\n\n\n
  • Bianco<\/strong> \u00e8 adatto a misure colorimetriche e ad applicazioni in cui molteplici tipi di feature richiedono un’analisi simultanea.<\/li>\n<\/ul>\n\n\n\n

    La serie RODER DC in sintesi<\/h2>\n\n\n\n
    Serie<\/th>Profilo<\/th>Caratteristica chiave<\/th>Applicazione principale<\/th><\/tr><\/thead>
    DC2<\/strong><\/td>Standard<\/td>Illuminazione a basso angolo<\/td>Rilevamento difetti superficiali e graffi<\/td><\/tr>
    DC3<\/strong><\/td>Piatto, ad alto flusso<\/td>Alta luminosit\u00e0, compatto<\/td>Ispezione generale, spazi ridotti<\/td><\/tr>
    DC4<\/strong><\/td>Piatto, lenti integrate<\/td>Output focalizzato e concentrato<\/td>Compiti ad alta velocit\u00e0 e alto contrasto<\/td><\/tr>
    DC5<\/strong><\/td>Matrice piatta ad alto flusso<\/td>Ispezione continua impegnativa<\/td>Elettronica, componenti automotive<\/td><\/tr>
    DC6<\/strong><\/td>Matrice piatta, compatta<\/td>Formato ad alta densit\u00e0, montabile sulla telecamera<\/td>Integrazione OEM compatta<\/td><\/tr>
    DC7<\/strong><\/td>Matrice piatta di grande formato<\/td>Copertura circolare su ampia area<\/td>Pezzi di grandi dimensioni, ispezioni a campo ampio<\/td><\/tr>
    DC8<\/strong><\/td>Nuova generazione<\/td>Gestione termica avanzata<\/td>Sistemi AOI di nuova generazione<\/td><\/tr>
    DC9<\/strong><\/td>Nuova generazione<\/td>Matrice ad alto output<\/td>Linee di ispezione automatizzate<\/td><\/tr>
    RDL1<\/strong><\/td>Angolo regolabile<\/td>Flessibilit\u00e0 multi-geometria<\/td>Stazioni flessibili multi-prodotto<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    Raccomandazioni di integrazione<\/h2>\n\n\n\n

    Ring illuminators perform best when the inner diameter is sized to match the camera lens diameter with minimal clearance, and the outer diameter is sized to cover the full field of view at the intended working distance. Undersizing the ring relative to the field of view produces characteristic dark corner vignetting in the acquired image \u2014 a common setup error that is entirely preventable through correct pre-installation sizing.<\/p>\n\n\n\n

    For applications where a ring light produces excessive central reflection on polished or mirror-finish surfaces, a flat dome illuminator from the RODER FD series is the recommended alternative. The FD series generates fully diffuse illumination that eliminates specular highlights across the entire surface \u2014 complementing the ring light range for reflective-surface inspection tasks.<\/p>\n\n\n\n

    Per supporto specifico di configurazione applicativa, il team tecnico RODER Vision \u00e8 disponibile per assistere su dimensionamento dell’illuminatore, scelta della lunghezza d’onda e design di integrazione.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

    Ring light illuminators are the most widely used front illumination solution in industrial machine vision. Mounted coaxially around the camera lens, they deliver uniform, shadow-free light directly onto the inspected surface \u2014 eliminating the directional artifacts that single-source illuminators introduce at the edges of the field of view. RODER Vision’s DC series covers the full […]<\/p>\n","protected":false},"author":157040980,"featured_media":9569,"parent":9227,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_crdt_document":"","footnotes":""},"class_list":["post-9568","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"\nIlluminatori LED ad anello per visione artificiale<\/title>\n<meta name=\"description\" content=\"Illuminatori LED ad anello RODER Vision per visione artificiale. 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