Some parts are too big, too awkward, or too fixed in place to bring to a curing station. A portable UV flood lamp reverses the arrangement, carrying the curing field to the work, and that changes how dose, distance, and safety have to be managed. Q: When does a portable UV flood lamp make sense? A: When the part cannot conveniently go to a fixed curing station, or when a bench needs flood curing without a permanent installation. Incure's F400 and F500 are portable units with a 3.15 lb removable lamp head and no fixed installation, each covering a 5″×5″ curing field. The F500 delivers the highest irradiance in the F-Series™ range, 590 mW/cm² of UVA at 2.0 inches. F400 vs. F500 at a Glance F400 F500 Lamp 400W arc 600W arc Curing field 5″×5″ 5″×5″ UVA intensity 490 mW/cm² 590 mW/cm² Visible output 420 nm and 460 nm 420 nm Optional 5″×3″ reflector Yes No Head weight 3.15 lb 3.15 lb The two share a form factor, so the choice comes down to intensity, visible-wavelength coverage, and whether the focused reflector is needed. At equal dose, the F500's higher intensity shortens exposure: 490 ÷ 590 means the F500 needs about 83 percent of the F400's exposure time for the same dose. For a hypothetical material requiring 1,800 mJ/cm², that works out to roughly 3.7 seconds under the F400 and 3.1 seconds under the F500; substitute your own material's data-sheet dose. The Focused 5″×3″ Reflector The F400 accepts an optional focused reflector that narrows the field to 5″×3″, quoted at 240 mW/cm² at 3.0 inches. It suits elongated cure zones, such as a bond line along an edge, where a square 5″×5″ field would expose more area than needed. The reflector is not compatible with the F500's higher-wattage lamp, so a process built around the 5″×3″ field has to specify the F400. Holding Distance in Handheld Use Published intensities are quoted at a specific distance, 2.0 inches for the standard field and 3.0 inches for the focused reflector. In handheld use, distance is the variable most likely to wander, and dose wanders with it. Practical ways to hold it steady: Use a standoff or spacer fixed to the work so the head always rests at the same height. Mount the head on its stand for bench work instead of holding it, when the part allows. Mark the cure zone so each exposure starts and ends in the same position. Measure at the real distance with a radiometer before relying on the catalog figure. Email Us with your part geometry and working distance, and Incure's engineers can confirm whether the F400, the F500, or the focused reflector fits the job. Idle Time and Bulb Life Both portable models use a standby rocker switch that halves lamp power at idle. On intermittent handheld work, keeping the lamp in standby between exposures rather than switching it fully off avoids repeated restarts, which matters because frequent thermal cycling from start-stop operation accelerates bulb degradation.…

Not every cure step happens at a fixed station. Repairs, rework, and large fabrications often need the lamp brought to the part. The Incure F400 is a portable UV flood curing lamp that delivers a uniform curing field in a hand-movable package, so light-curable adhesives and coatings can be cured wherever the work is. What the F400 Is The F400 is part of Incure's F-Series arc flood lamp line. It produces a broadband ultraviolet output over a flood field suited to bonding, sealing, and coating tasks that a spot lamp cannot cover in one exposure. Its portability makes it useful both as a primary cure tool for low-volume work and as a secondary tool alongside a fixed line. Where Portability Helps On-site and in-place repair: Cure a bonded joint or a touch-up coating without moving the assembly to a curing station. Large or awkward parts: Reach areas of a fabrication that will not fit under a benchtop head. Restricted-access features: Position the field where a fixed enclosure cannot. Prototyping and short runs: Cure light-curable materials during development without dedicating a station. Inspection and containment: Apply a localized cure during quality checks or field service. Understanding Flood Field and Dose A flood lamp illuminates a rectangular area with a controlled irradiance in mW/cm². The energy the coating absorbs is the UV dose: irradiance multiplied by exposure time. With a portable lamp, hold the working distance constant, because irradiance falls off steeply as the head moves away from the surface. A simple standoff jig or spacer keeps the dose predictable from cure to cure. Selecting and Using the F400 Wavelength and spectrum: Confirm the lamp output overlaps the photoinitiator absorption in your adhesive or coating. Field coverage: The uniform window should cover each bond in a single exposure; larger areas need indexed exposures with overlap. Exposure time: Derive it from the material's target dose and the measured irradiance at your working distance. Eye and skin protection: Operators must wear UV-blocking eyewear and keep the beam contained; the field is bright enough to cause injury on direct exposure. Duty cycle: Allow the cooling cycle between exposures that the lamp specifies. Keeping a Portable Cure Repeatable The main risk with a hand-positioned lamp is inconsistent working distance. Irradiance falls roughly with the square of distance in the near field, so a head held 30 mm away instead of 20 mm can deliver less than half the intended energy. Three practices control this: Use a standoff: A simple spacer, bracket, or fixture that sets the head at a fixed height off the part. Verify with a radiometer: Measure irradiance at the intended working distance and calculate exposure time from the material's target dose. Check cure, not just appearance: A film can look glossy and still be under-crosslinked. Confirm with a solvent rub or hardness check on a sample. The guide to selecting a UV lamp for resin curing covers matching source output to a material's dose need. Portable Versus Fixed Curing A portable flood lamp…

Consistent cure quality depends on delivering the same ultraviolet dose to every part. A programmable UV flood curing lamp lets an engineer define intensity, exposure time, and multi-step profiles, save them as recipes, and repeat them exactly, removing the operator judgment that causes cure-to-cure variation. What "Programmable" Adds to Flood Curing A basic flood lamp has an on-off switch and perhaps a mechanical timer. A programmable head adds: Set-point intensity control: The lamp holds a commanded irradiance rather than running wide open, so a heat-sensitive substrate sees only the energy it needs. Timed and stepped exposures: A profile can ramp intensity up, hold, then taper down, which reduces shrinkage stress in thick sections and across a coefficient of thermal expansion mismatch. Stored recipes: Each material and part number gets its own saved profile, recalled by number instead of re-entered by hand. Data logging: Time-stamped records of commanded and measured output support process control and quality audits. Why Repeatability Matters Light-curable adhesives and coatings have a dose window. Below it, the film stays tacky and under-crosslinked; above it, the polymer can embrittle or yellow. A saved recipe keeps every part inside that window across shifts and across multiple identical stations. When a line runs several chemistries, recipe management prevents the wrong exposure being applied after a changeover. Building a Curing Profile Identify the target dose from the material datasheet in mJ/cm² at the specified wavelength. Measure delivered irradiance at the working distance with a band-correct radiometer. Calculate exposure time as target dose divided by measured irradiance. Verify cure by solvent rub, hardness, or pull test on sample parts. Lock and document the recipe, then re-verify irradiance on a schedule as the lamp ages. Incure's F900P programmable flood lamp supports stored multi-stage profiles for this workflow, and larger fields can be covered with L-Series UV LED flood arrays. Data Logging and Process Validation A programmable lamp that records each cure creates an audit trail that manual timers cannot. Useful fields to log are recipe number, commanded intensity, measured intensity from an on-board or external sensor, exposure time, and a timestamp. When a batch is later questioned, that record shows whether every part in it received the specified dose. During process validation, the same data supports a capability study: run 30 or more parts on a locked recipe, measure cure by hardness or pull strength, and confirm the spread stays inside the acceptance limits with margin. When Simpler Equipment Is Enough Programmable control is worth the cost when a line runs multiple chemistries, when cure is a documented quality parameter, or when thick or stress-sensitive sections need a staged profile. A single-chemistry line curing a thin coating to a wide dose window often runs well on a fixed-output lamp and a mechanical timer. Match the equipment to the process risk rather than buying capability that will never be used. Wavelength and Intensity Interaction Intensity and time are not fully interchangeable. Halving intensity and doubling time reaches the same nominal dose, but very low…