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Omron / Sentech FLV-DR4415 machine vision lighting
Omron / SentechRing lights
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Omron / Sentech FLV-DR4415 Direct Ring Light

FLV-DR4415

The FLV-DR4415 is part of Omron's FLV-DR direct ring light series, using high-density LED arrays in a compact aluminum-alloy case for bright, direct illumination of non-specular and area surfaces. It has a 44 mm external ring diameter and a 17 mm internal ring diameter with a 15-degree lighting angle, and the model is offered as FLV-DR4415W (white, 2.7 W), FLV-DR4415R (red, peak 635 nm, 1.7 W), and FLV-DR4415B (blue, peak 465 nm, 2.7 W). The light unit is a passive LED head that connects to and is driven by an Omron lighting controller (FLV-TCC, FLV-ATC, or 3Z4S-LT IDGB series), powered at 24 VDC. An optional diffusion plate is available for more uniform illumination, supporting applications such as PCB component detection, automotive part/print inspection, PET bottle mouth defect inspection, and character/code reading.

Brand
Omron / Sentech
Lighting type
Direct ring light
Color / wavelength
White (also available as Red 635 nm and Blue 465 nm)
Available wavelengths
White / Red (typ. 635 nm) / Blue (typ. 465 nm)
Mode
Continuous / strobe (set by lighting controller)
Controller required
Yes - requires Omron lighting controller (FLV-TCC, FLV-ATC or 3Z4S-LT IDGB series)
Diffuser
Optional diffusion plate available (not included)
Inner diameter
17 mm internal ring diameter
Emission angle
15-degree lighting angle (narrow)
Power consumption
2.7 W (white / blue); 1.7 W (red)
Supply voltage
24 VDC (supplied via lighting controller)
Connection
Cable to Omron lighting controller
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Technical overview

The Omron FLV-DR4415 is a direct ring light built around high-density LED arrays in a 44 mm-diameter aluminum-alloy head, with a 17 mm internal opening through which the camera looks. Geometrically it is a direct ring illuminator: the LEDs sit in a ring and project light forward at a 15-degree lighting angle, which is a narrow cone rather than a wide flood. That narrow angle is the defining characteristic. It throws bright, concentrated light straight onto the part and is best suited to non-specular and broadly flat (area) surfaces where you want even, frontal brightness and good feature contrast. Because the ring surrounds the optical axis, it minimizes cast shadows for top-down inspection of features like printed text, component placement, and surface marks.

Color is a genuine selection lever here. The unit is offered in three variants that share the same mechanics but differ in spectrum: FLV-DR4415W (white, 2.7 W) for general-purpose and color inspection, FLV-DR4415R (red, peak 635 nm, 1.7 W), and FLV-DR4415B (blue, peak 465 nm, 2.7 W). Monochromatic red or blue lets you push contrast on specific targets. Red 635 nm is forgiving and penetrating for many materials and pairs well with monochrome sensors, while blue 465 nm gives finer, shorter-wavelength definition useful for resolving small surface or edge detail. Whichever color you choose, the head is a passive LED unit: it carries no internal driver and must be connected to and powered by an Omron lighting controller (the FLV-TCC, FLV-ATC, or 3Z4S-LT IDGB series) at 24 VDC. The controller, not the light, sets the operating mode, so the same head can run continuous for steady inspection or be strobed in pulses synchronized to the camera for moving lines.

Practically, this is a compact, low-mass building block. The head weighs only 70 g and consumes just 1.7 to 2.7 W, so it mounts easily on the camera or a small fixture without significant thermal or load concerns, and the aluminum-alloy case provides the rigidity and heat path expected of an industrial light. The 44 mm OD with a 17 mm ID constrains the working geometry. The camera lens must clear the 17 mm aperture, and the small ring diameter means it is intended for close working distances over a relatively small field rather than illuminating large parts from far away. If the bare ring produces hot spots or LED imaging on glossy targets, an optional diffusion plate (sold separately) can be added to spread the output into a softer, more uniform field at the cost of some intensity. Connection is by cable to the controller, keeping the head itself simple and rugged.

Best for

  • PCB and electronic component presence/placement detection where frontal, shadow-free light over a small area is needed
  • Automotive part and printed-mark inspection on matte, non-specular surfaces
  • PET bottle mouth defect inspection on packaging lines
  • Character and code reading (OCR/OCV and traceability) on flat labels and parts
  • Compact, camera-mounted top-down inspection at short working distances where a 17 mm clear aperture and low 70 g weight matter

Selection notes

  • This is a passive head with no built-in driver: budget for an Omron lighting controller (FLV-TCC, FLV-ATC, or 3Z4S-LT IDGB series) and a 24 VDC supply, since the controller sets continuous vs. strobe operation and brightness.
  • Pick the color to the task: white (2.7 W) for general and color work, red 635 nm (1.7 W) for forgiving contrast on monochrome systems, blue 465 nm (2.7 W) for finer short-wavelength definition; the variant is fixed at order time, not switchable.
  • The 15-degree narrow angle and direct geometry favor non-specular and flat area surfaces; on glossy or specular parts expect glare or LED hot spots, so plan for the optional diffusion plate or a different lighting geometry.
  • Mechanical fit is tight: the lens must fit through the 17 mm internal aperture and the 44 mm outer ring suits small fields at close working distance, not large parts at long standoff.
  • Add the optional diffusion plate (not included) when you need more uniform illumination; it trades peak intensity for evenness, which can matter for reflective or textured targets.

Specifications: General
BrandOmron / Sentech
Lighting typeDirect ring light

Specifications: Interface
ConnectionCable to Omron lighting controller

Specifications: Optical
Color / wavelengthWhite (also available as Red 635 nm and Blue 465 nm)
Available wavelengthsWhite / Red (typ. 635 nm) / Blue (typ. 465 nm)
DiffuserOptional diffusion plate available (not included)
Emission angle15-degree lighting angle (narrow)

Specifications: Electrical
ModeContinuous / strobe (set by lighting controller)
Controller requiredYes - requires Omron lighting controller (FLV-TCC, FLV-ATC or 3Z4S-LT IDGB series)
Power consumption2.7 W (white / blue); 1.7 W (red)
Supply voltage24 VDC (supplied via lighting controller)

Specifications: Geometry
Inner diameter17 mm internal ring diameter
Illuminated areaRing illumination, 44 mm OD / 17 mm ID

Specifications: Mechanical
Housing materialAluminum alloy case
Dimensions44 mm external ring diameter, 17 mm internal ring diameter
Weight70 g

Frequently asked questions

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