1. Product Variants and Applications

The CONCEPT 35 series includes multiple models such as CONCEPT S 35, CONCEPT O 35, CONCEPT D 35, CONCEPT Sq 35, and their direct/indirect and curved or linear variants. These luminaires support recessed, surface, suspended, and wall-mounted installations, providing versatile architectural lighting solutions. The optical system employs the bFLEX high-tech opal diffuser (sold separately) to deliver soft, uniform illumination without visible spots.

2. Design and Construction

The luminaire bodies are crafted from seamlessly welded aluminium profiles, available in 12 powder-coated colors including White, Gray, Black, Sahara, Mist, Carbon, Autumn, Rusty Chain, Jungle, Golden Eye, Old Rose, and Copper. Die-cast aluminium end caps prevent light leakage and conceal screws, matching the body color. Suspension and power supply cables come in lengths of 1500, 3000, or 6000 mm. Ceiling roses are offered in recessed or surface-mounted versions in white or black. High-performance inner reflectors (HPR) ensure efficient and uniform light distribution.

3. Optical and Electrical Characteristics

LED sources feature a color rendering index (CRI) above 80, MacAdam Step ≤3, and color temperatures of 3000K or 4000K. The LEDs have a long lifetime of 50,000 to 70,000 hours at L90 B10. LED drivers compatible with 220-240V, 50/60Hz are included, with optional DALI dimmable and SwitchDIM drivers available. Direct/Indirect versions provide an 80% direct and 20% indirect light ratio, using opal diffusers on indirect parts for uniform ceiling illumination.

4. Modular System and Assembly

The system includes various modules such as start (SRT), middle/end left, middle/end right, linear, and curved modules, enabling flexible configurations. Body connectors prevent light leakage and allow quick electrical connections for easy installation. Detailed dimensions for diameter and length vary by module type to assist planning. Additional components like continuous diffusers, start kits, end caps, body connectors, suspensions, and ceiling roses must be ordered separately to complete installations.

5. Accessories and Options

bFLEX diffusers are available in rolls of 5000, 15000, or 30000 mm. Accessories include steel safety cables, ceiling marking kits, and suspension cables of various lengths. Acoustic versions incorporate acoustic moss and panels with sound absorption and humidity control, offered in multiple colors to enhance environmental comfort.

6. Performance Data and Efficiency

Light output ranges from approximately 2,000 to over 11,000 lumens depending on module size and configuration. Luminous efficacy varies between 86 and 101 lm/W, indicating high energy efficiency. Modules support multiple angular light distributions: 22.5º (1/16), 45º (1/8), 90º (1/4), 180º (1/2), and full 360º (1/1) for circular modules.

7. Installation Guidelines and Recommendations

For recessed installations, add 6 mm (or 26 mm for some versions) to recessing length to accommodate start kits. A minimum installation distance of 500 mm is recommended for direct/indirect versions to ensure uniform ceiling illumination. An online configurator tool (configurator.indelaguegroup.com) assists in custom lighting design and product selection.

Critical Information Summary

• Modular design enables tailored lighting solutions for diverse architectural needs.
• High-quality materials and finishes ensure durability and aesthetic appeal.
• Advanced optical systems and LED technology provide efficient, uniform lighting with long service life.
• Accessories and options allow customization and compliance with specific installation requirements.
• Acoustic options improve environmental comfort by reducing noise and controlling humidity.

Additional Technical Specifications

• LED light source classified RG1, CRI >80, MacAdam Step ≤3.
• LED lifetime up to 70,000 hours at L90 B10, Ta 25°C.
• Control gear includes 220-240V, 50/60Hz LED drivers; SwitchDIM, DALI, and HF control options available.
• Color finishes include 12 powder-coated options.

Product Dimensions and Performance Examples

• CONCEPT O 35 diameters range from Ø455 mm to Ø7936 mm, luminous output from ~3,296 lm to 72,626 lm, efficacy 92-102 lm/W.
• CONCEPT Sq 35 lengths from 1126 mm to 1441 mm, luminous output 10,450 lm to 17,053 lm, efficacy 93-100 lm/W.
• CONCEPT D 35 lengths from 1187 mm to 1465 mm, luminous output 9,900 lm to 16,090 lm, efficacy 92-94 lm/W.

Installation and Configuration Details

• Fixtures above Ø1494 mm are composed of multiple modules.
• Suspended versions require separate ordering of suspension systems, current supply cables, and ceiling roses.
• Minimum 500 mm distance recommended for indirect lighting to maintain uniformity.
• Online configurator available for customized design and ordering.

Options and Accessories Summary

• bFLEX opal diffusers standard; acoustic panels and moss for sound and humidity control.
• Control options include SwitchDIM, DALI, and HF.
• Suspension kits vary by fixture size; cables available in multiple lengths and conductor counts.
• Ceiling roses offered in surface and recessed versions, compatible with fixture sizes.
• Steel safety cables available as optional safety accessory.

Performance and Photometric Data

Photometric data includes luminous flux values for beam angles of 30º, 60º, 90º, and 120º, with polar curves (C0-C180, C90-C270) supporting diverse lighting designs and architectural requirements.

Key Recommendations and Limitations

• Refer to manuals or website for cutting dimensions and installation details for large multi-module fixtures.
• Maintain minimum 500 mm installation distance for indirect lighting versions to ensure uniform ceiling illumination.
• Suspended versions require separate purchase of suspension and power supply accessories.

Summary

The CONCEPT 35 architectural lighting range offers highly customizable, efficient, and durable LED luminaires suitable for various installation types. Its modular design, extensive accessory options, and advanced optical technology support tailored lighting solutions with long service life and enhanced environmental comfort through acoustic options. Detailed technical data and an online configurator facilitate precise design and installation planning for architects, lighting designers, and installers.