Fourteen meters underwater. Leaded glass against gamma radiation. Completely 316L. From -65 to +120 °C. Each of those four is a delivered luminaire, not a study.
For us, custom work does not start with a drawing, but with your environment: temperature, pressure, corrosion, radiation, vibration, and the standards set by your client. From that follows whether you need a different light color, a customized housing, or a luminaire that does not yet exist. We will also tell you when a standard product is sufficient.
Response within 1 business dayYou speak to an engineer, not a salesperson.Non-binding
| 14 m under waterPermanently submerged | -65 up to +120 °CTested temperature range |
| 316LHousing and mounting | Flake glassAgainst gamma radiation |
Customization is not an all-or-nothing proposition. In the vast majority of cases, an existing luminaire with a different optic, color, or bracket is sufficient. Choose the level below that fits your situation; if you are in doubt, we will determine it together with you within one business day.
The fixture remains as it is; the execution adapts. Light color, optics, CRI, voltage, cable length, connector, bracket, and coating are chosen based on what your position requires rather than what happens to be in stock.
For those who want the right specification without compromises, within the normal delivery time. This is by far the most common level, and in many cases it is also enough.
Amber 2200K with an asymmetrical optic for a nature-sensitive location, so that the bat corridor remains unlit and the work zone does not.
| What you supply | environment and mounting position |
| What you get back | specified standard luminaire |
| Lead time | within the normal delivery time |
| Minimum quantity | no minimum |
| Engineering costs | no engineering fee |
| Light color from 1800K to 6500K, and dual-color |
| Optics and beam angle per position |
| CRI 80 or 90 where color rendering matters |
| Voltage, cable length and connector |
| Bracket, mounting direction and coating color |
The fixture is rebuilt using certain components: a different housing, a different material, an additional seal, a heavier-duty bracket, or supplementary certification. The basis remains a proven product, which keeps lead time and risk limited.
For environments where the standard program just doesn't suffice. Usually, one characteristic is the problem: the temperature, the vibration, or the material.
A Barracuda with a heavy-duty bracket rated for 200G shock loads, tested in-house, and the same fixture in 316L for a high-temperature zone exposed to salt.
| What you supply | requirements package or load profile |
| What you get back | customized luminaire with documentation |
| Lead time | project-dependent, weeks |
| Minimum quantity | from 1 piece |
| Engineering costs | limited, per project |
| 316L housing instead of coated aluminum |
| Heavier bracket or different mounting concept |
| Additional sealing or different cable gland |
| Custom driver position or external driver box |
| Additional certification or test reports |
There is no fixture that can handle it, so we build one. Designed to your specifications, evaluated in 3D before anything is made, tested as a prototype against those exact specifications, and then certified and mass-produced.
For environments for which nothing exists: underwater, nuclear, extreme temperature, or a combination that no supplier covers.
The 316L luminaire with radiation-shielding lead glass for a nuclear facility, and the luminaire that is permanently under pressure at a depth of fourteen meters.
| What you supply | program of requirements, standards and environment |
| What you get back | certified luminaire plus test reports |
| Lead time | after the requirements analysis concretely |
| Minimum quantity | from 1 piece |
| Engineering costs | one-off engineering fee |
| Iron analysis and translation into a technical package |
| 3D design concept for review |
| Prototype with pressure, temperature, and material testing |
| CE and the standards that your application requires |
| Series production, installation and maintenance |
At a depth of fourteen meters, every gasket is permanently under pressure, and a leak is not something you discover the next morning. We designed a luminaire that not only withstands that environment but continues to perform throughout its entire lifespan, featuring a pressure-resistant cable entry and a serviceable design. No luminaire existed for this application; now one does.
| Basis | Barracuda in 316L |
| Level | 3, brand new luminaire |
Gamma radiation breaks down plastics and electronics; a standard fixture does not last long in it. For a European nuclear facility, we developed a fixture with radiation-shielding lead glass in a completely 316L housing, designed for the radiation load of that specific position. Because of the nature of the location, we are not naming the client; discretion is part of this work.
| Material | leaded glass in 316L |
| Level | 3, under NDA |
Every claim on this page has been tested and verified: water depth, temperature range, material, and radiation shielding. The test reports are part of the documentation provided with the luminaire. See also quality and warranty and the projects.
With every step you get something tangible in your hands, and at every step you can stop. This way you know what you are getting into before anything is built.
We translate your environment into a technical specifications package: temperature, pressure, corrosion, radiation, vibration, cleaning, and applicable standards. This is also where the required level is determined, and whether one is even needed.
You receive: a set of requirements and a well-founded recommendation regarding the level
You see the fixture before anything is built: shape, dimensions, installation, cable entry, and driver position. That is the moment to make changes, because after that it gets expensive.
You receive: a 3D design and dimensions for review
A physical fixture will be produced and tested against the specifications: pressure, temperature, material, sealing. No assumptions, only measured values, even if they fall short.
You receive: a prototype and the test reports
CE and EN standards relevant to your application, with the documentation that your client or insurer wants to see. What we cannot certify, we state explicitly here.
You receive: certificates and technical documentation
From a single unique fixture to series production, with the same testing and documentation. If desired, we install it ourselves, VCA** certified, and take care of the maintenance.
You receive: supplied light fixtures, and installation if you wish
A custom process takes time and money, and only pays off if a standard program truly cannot handle it. In many cases, that is not so: a different lens angle, a different color temperature, or a different mounting position solves the problem within the normal delivery time.
We also say that even if it costs us an assignment. An engineering process that turns out to be unnecessary afterwards is a loss for both parties.
We do not supply ATEX- or IECEx-certified luminaires and do not hold class approval from a classification society. If your environment requires this, we will state this during the initial conversation and refer you elsewhere.
| Your question | What we usually advise |
|---|---|
| The position is warm, but how warm I do not know | Measure first. If it stays below +50 °C, the standard program is sufficient; above that, the HT line is already there. |
| I need a different light color or beam angle | That is level 1, not a custom-made program: color, optics, and CRI are selectable options within the normal delivery time. |
| The fixture does not fit my mounting point | Usually a bracket issue. Our assembly program covers many positions; only when that fails does it become level 2. |
| I want a unique fixture for the appearance | Then we advise against it. Engineering pays off in technology, not in form; you are better off choosing color and assembly. |
| My environment is asking for ATEX or class approval | We cannot deliver that. We state that during the initial conversation and refer them to a specialized party. |
From Rolldock to Tata Steel, Boskalis, Mammoet, and VDL. Not because of a brochure, but because of luminaires that demonstrably do what we promise, and documentation that allows them to prove that to their own clients.
Is your question not listed? Call Lucas de Graaf directly; you will be connected to an engineer immediately.
Starting from a single piece. A one-time engineering fee applies for single pieces; after that, we build the luminaire with the same testing and documentation as a series. Some environments require precisely one unique luminaire, and that is also possible.
A level 1 configuration usually falls within the normal delivery time. A customized fixture takes a matter of weeks, depending on what is being changed. For a completely new fixture, we provide a concrete schedule after the requirements analysis; before that, any number is a shot in the dark.
Yes. Water depth, temperature range, material, and radiation protection have been tested and verified. The test reports are included in the documentation provided to you. Where we have not tested something, we state that as well; that is the reason why there is no standardized vibration class listed on our product pages.
At level 1 nothing: that is product selection. At level 2, the costs depend on what changes structurally. At level 3, a one-off engineering fee applies which we will make concrete after the requirements analysis, so that you can weigh it against the number of luminaires and the service life.
The design and the rights to it remain with JEL Products, even for a fixture built entirely for your specific situation. What is negotiable, however, is exclusivity: that we will not supply the fixture to your competitors or within your industry. Be sure to raise this issue early on, as it will help determine the structure of the process.
Yes, we do that regularly, including for nuclear environments. Please indicate in your request that it needs to be under an NDA, and we will send one over before the technical details are discussed.
The same five-year industrial warranty as our standard products, unless the application requires different arrangements. In extreme environments, we pre-agree on those arrangements, along with the limits within which they apply.
Yes. We also provide lighting calculations and reports on glare and light nuisance in accordance with the NSVV code of conduct separately, as justification for your permit or design. There is no purchase obligation attached to this.
No. We build on our own platforms, because only then can we guarantee testing, documentation, and the warranty. However, we do look into whether an existing installation can be replaced with our luminaires.
Then we say that. A prototype that fails the test is unfortunate, but it is better than a luminaire that fails on location. In that case, we discuss whether a different approach is possible or whether the requirement needs to be adjusted.
Yes, preferably from the design phase. Then we coordinate the lens, voltage, cable length, connector, and mounting surface with the machine architecture, so that the luminaire fits into the assembly line instead of being screwed on afterwards.
The environment, not the fixture: temperature, pressure, corrosion, radiation, vibration, cleaning, and the standards set by your client. A photo of the location and a drawing help. If you do not know everything, provide what you do know.
What we need is the operating load: temperature, pressure, corrosion, radiation, vibration, cleaning, and the standards set by your client. The fixture follows from that. If you do not know all of these values, let us know what you do know; we will determine the rest together.
Within one working day, you will hear what level your situation requires, and just as honestly when a standard product suffices.
| Response | within 1 working day, by an engineer |
| Starting at | 1 fixture |
| Under NDA | conventional, also nuclear |
| Warranty on custom work | 5 years, as per standard |
Working under an NDA is customary. Please indicate this in your message, and we will send one along.
