Scaling up a UV flood lamp usually means accepting a lower peak intensity across the wider zone — except at the smallest step in the L-Series™, where that trade-off doesn’t apply yet.
4× the Curing Area of the L11, Same 4,300 mW/cm²
The Incure L22 is a 2″ × 2″ UV LED flood curing lamp built on a 36-LED array, delivering four times the curing area of the Incure L11 at an identical 4,300 mW/cm² peak output at 385, 395, or 405 nm. That intensity parity is the point: an engineer moving from a single-joint L11 setup to a multi-joint L22 setup does not need to re-qualify cure time. Same adhesive, same irradiance, a larger zone — the process window that was validated on the L11 carries over directly.
Four Bond Points in One Trigger Cycle
A 2″ × 2″ flood covers four 1-inch bond points simultaneously. What the L11 handles as four sequential placements — trigger, reposition, trigger, reposition — the L22 handles in a single cycle. On assemblies with multiple closely spaced adhesive joints, such as sensor mounts, PCB stiffener bonds, or multi-point optical assemblies, that difference compounds directly into tact time: fewer cure cycles per part means fewer operator touches and shorter total process time per unit, without any change to the per-joint UV dose.
4,300 mW/cm² Across a 2″ × 2″ Area
Peak irradiance at a 2-inch working distance is 4,300 mW/cm² at 385, 395, or 405 nm, and 3,600 mW/cm² at 365 nm, from the 36-LED array. Static uniformity holds at 0.78 at 2.0 inches. Like the L11, the L22 is dimensionally matched to the Incure C131C, C131D, and C141C compact cure chambers, and shares the same LCD front panel, foot-switch input, and PLC digital I/O control set — timer and continuous modes switch from the front panel without reconfiguration.
Choosing L22 Over L11 or L33
The decision among the smallest three L-Series™ models is purely a footprint question, not an intensity trade-off, since the L11 and L22 share identical peak output. Count the actual bond points on the assembly and their spacing: a single joint calls for the L11; a cluster of joints fitting inside a 2-inch square calls for the L22; a wider pattern spanning 3 inches moves to the L33, where intensity does begin to shift (3,100 mW/cm² rather than 4,300). Sizing to actual joint geometry avoids over-irradiating surrounding board area unnecessarily.
Wavelength Ordering and Cross-Joint Consistency
Because the L22’s wavelength is set once at order across all four bond points it covers in a cycle, every joint under the array needs to share compatible photoinitiator chemistry with that single factory-configured wavelength — 365, 385, 395, or 405 nm. On a multi-joint assembly using more than one adhesive product across its four bond points, confirming all of them respond to the same wavelength before finalizing the L22’s order avoids a scenario where one joint cures reliably while an adjacent joint, on a different formulation, cures only partially under the identical exposure.
Matching Adhesive Chemistry to the L22’s Output Window
Multi-joint assemblies frequently mix bonding and gasket-sealing functions on the same board. For structural adhesive joints, the Incure Uni-Weld™ Multi-Substrates Bonder line covers viscosity grades suited to different joint geometries, and for optical or index-sensitive bonding at one or more of the four cure points, the Incure Optik™ UV optical adhesives line documents grade-specific cure-path data against the L22’s wavelength options. Confirming that every joint on the board shares a compatible photoinitiator response to the same factory-configured wavelength is worth doing before committing to a four-point fixture design — Email Us with the joint layout for a wavelength-compatibility check.
Uniformity Across a Wider Zone
Static uniformity of 0.78 at a 2.0-inch working distance means the ratio between the dimmest and brightest points across the L22’s 2″ × 2″ zone stays within a fairly tight band — a meaningful spec for multi-joint curing specifically, since a lamp with poor edge-to-center uniformity would cure the four bond points in a cluster to noticeably different degrees depending on their position under the array. Confirming actual working distance against the recommended 1-to-3-inch range keeps uniformity performance where the datasheet specifies it; drifting further from the array than intended is a common way uniformity performance quietly degrades on an otherwise correctly specified installation.
Eye Protection at Close-Range Multi-Point Cure
Because the L22 operates at the same short 1-to-3-inch working distance as the L11, and typically sits on manual or semi-automated bench fixtures where an operator triggers the cycle by foot switch, UV eye protection rated for the full 365–405 nm range remains a standard part of the workstation setup. Incure Vison™ UV-blocking eyewear covers the L-Series™’s complete wavelength range and is worth specifying alongside any L22 bench install.
For help sizing a multi-joint fixture layout against the L22’s footprint, or comparing it to the L11 and L33 for a specific bond pattern, Contact Our Team.
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