Fresnel LED Downlight Recessed Low UGR CRI90

The ILED-DL-B T1 is a recessed LED downlight with a Fresnel lens and low UGR, built for offices, schools, retail, and hospitality where glare at desk height or eye level is a real issue. The Fresnel optic spreads light evenly over a 120° beam, which keeps the floor evenly lit without bright spots directly under the fixture.

Range and models

Four models share the same design and differ in size. The ILED-DL3-B T1 is 10W with 1,200 lm, housing 110mm in diameter by 50mm deep, cutout 95mm. The ILED-DL4-B T1 is 15W with 1,800 lm, 140mm by 55mm, cutout 125mm. The ILED-DL6-B T1 is 20W with 2,400 lm, 165mm by 60mm, cutout 150mm. The ILED-DL8-B T1 is 30W with 3,600 lm, 220mm by 67mm, cutout 200mm. Lumen efficacy is 120 lm/W across the range, so the higher models get their output from larger light sources, not from running the LEDs harder.

Fresnel lens and UGR

The Fresnel lens is the defining feature of this series. It takes the source light and spreads it into a uniform 120° wash, which is what keeps the UGR low. In practice this means a person sitting at a desk under one of these fixtures does not see a bright source in their field of view. The trade-off is a softer, more diffused light than a standard downlight with a focused reflector. The same optic principle is used in professional lighting where even spread matters more than peak intensity.

Light source

The fixture uses LM80-certified LEDs, a rating that tracks lumen maintenance over time. Color rendering is available in two grades: CRI above 82 as the standard option, or CRI 90 when color accuracy matters — galleries, fashion retail, and showrooms are the usual cases. Color temperature is selectable between 3000K, 4000K, and 6000K via a switch, so the CCT can be set on-site after installation to match the room. Eight color reflectors are available, chosen at order, so the fixture can match the ceiling finish.

Power and electrical

Input voltage accepts 220-240VAC or 110-277VAC. The fixture is electrical Class II, so it does not need an earth connection. Power factor is above 0.9. The driver is built in, so there is no separate driver box to fit above the ceiling — one less component in the cavity.

Construction and IP rating

The body is aluminum with PC optics, in white or black finish. The standard rating is IP42, which covers normal indoor use. IP54 is available as an option for dusty or damp areas such as corridors, workshops, and semi-exposed spaces. Choose the rating at order time; it is not field-convertible, so decide based on the actual environment before ordering.

Control options

Four functions are offered, selected at order: DALI for networked building control, Triac dimming for standard wall dimmers, 0-10V for analog control systems, and an emergency version that keeps the fixture lit from a backup supply during a power outage. The emergency version needs separate wiring to the backup source, so factor that into the install.

Installation

Installation is a drop-in job on a ceiling already cut to size: connect the supply, push the housing into the cutout, and the clips hold it in place. The 3CCT switch and the control connections are accessible from below before the trim is seated. If the ceiling is new, cut the hole to the model’s cutout size and leave enough cavity depth for the housing.

Warranty and certifications

Warranty is 3 to 5 years depending on configuration. The fixture carries SAA, CE, and RoHS certifications.

Typical use cases

Open-plan offices use the low UGR to keep screens and desks glare-free. Schools and libraries use it for the same reason over study areas. Retail and boutiques use the CRI 90 option on merchandise. Hospitality spaces use the 3000K setting with Triac dimming for evening ambiance. Museums and galleries use the even 120° beam to wash walls and displays without hot spots.

Buyers choose the ILED-DL-B T1 for a few specific reasons:

Low UGR. The Fresnel lens spreads light over a 120° beam, so people sitting or standing under the fixture do not see a bright source at eye level. This is what makes it a common pick for offices, schools, and clinics.

Even beam. Standard reflectors can leave a hot spot directly under the fixture and a dimmer ring outside it. The Fresnel optic evens that out.

Switchable color temperature. 3000K, 4000K, and 6000K are set on-site with a switch. A room that changes use — classroom by day, event space at night — changes CCT without changing fixtures.

Choice of CRI. CRI above 82 for general use, or CRI 90 where color accuracy matters. Pick the grade that matches the space.

Control options at order. DALI, Triac, 0-10V, or emergency. The fixture is built to match the control system already in the building.

The ILED-DL-B T1 fits several indoor settings where low glare matters:

Offices and workspaces. The low UGR keeps screens and desks glare-free, and DALI or 0-10V control zones the light over workstations. The 4000K setting suits daytime work.

Schools and libraries. Study areas and reading rooms benefit from the soft, even beam and the lack of a bright source at eye level. The 120 lm/W efficacy keeps running costs down across large installations.

Retail and hospitality. Boutiques use the CRI 90 option on merchandise, and hotels use the 3000K setting with Triac dimming for evening ambiance. The eight color reflectors let the fixture match interior finishes.

Museums and galleries. The even 120° beam washes walls and displays without hot spots, and the CRI 90 option keeps artwork colors true.

Healthcare. Clinics and waiting areas use the glare-limited light with the emergency option, which keeps paths lit during an outage and gives staff a comfortable light for long shifts.

Corridors and lobbies. The wide beam covers walkways evenly, and the IP54 option suits semi-exposed entry areas and service passages.

Conference and meeting rooms. The 3CCT switch shifts between presentation and discussion modes, and Triac dimming adjusts the level during video calls.

A few things to check before ordering:

Measure the existing hole. The four models need cutouts of 95mm, 125mm, 150mm, or 200mm. Measure the hole and the ceiling cavity depth before choosing — the bodies are 50 to 67mm deep.

IP rating. IP42 is standard for dry indoor use. IP54 is the option for dusty or damp areas. The rating is fixed at order and cannot be changed later.

Control function. DALI, Triac, 0-10V, and emergency are selected when the fixture is built. Match the option to the control system already in the building.

Color temperature. The 3CCT switch sets 3000K, 4000K, or 6000K on-site. If the room has other fixtures, set them all to the same CCT before locking in the switch.

CRI grade. CRI above 82 covers general use. Choose CRI 90 for retail displays, galleries, and spaces where color judgment matters.

Emergency wiring. The emergency version needs a separate connection to a backup supply. If you are retrofitting into an existing ceiling, confirm the wiring path before installation.