TM-15 BUG Rating & 4W Bollard Photometric Lab Report | Outdoor Luminaire Supplier for Saudi Hotel & Municipal Projects

TM-15 BUG Rating & Photometric Lab Report Breakdown: 4W Bollard Landscape Lamp

When organizing photometric IES lab reports for villa gated communities and municipal landscape tender documents across Riyadh and Jeddah, various bollard lamp models carry differentiated TM-15 BUG grading results obtained via goniophotometer full scanning. This article takes mainstream 4W boundary bollard lamps as an example to interpret standard photometric indicators and B0-U1-G0 anti-light-spill grading reference for Saudi dark-sky specification writing.

The BUG grading system is generated synchronously during goniophotometer TM-15 scanning, containing three independent light spill evaluation dimensions graded from 0 (minimum light leakage) to 5 (severe upward/back light trespass).

Interpretation Of B0-U1-G0 Grading Standard

• B0 (Backlight Index): Zero backward light leakage. Integrated fully enclosed lamp housing blocks rear light without additional light baffles;
• G0 (Glare Index): No naked LED chip visible at normal human viewing height. Deep recessed light structure eliminates pedestrian glare interference;
• U1 (Uplight Index): Upward luminous output accounts for less than 10% of total flux, complying with dark-sky anti-light-pollution clauses widely adopted in Saudi residential boundary projects.

This type of bollard realizes controlled light distribution purely via structural casing design, without additional secondary optical lenses installed inside the fixture.

BUG Grading Reference Differences For Gulf Tender Specifications

Bollard lamps of identical power will generate different BUG evaluation results based on top cover structural design. Dome and transparent raised caps easily produce upward and rear light spill, which may fail dark-sky inspection during municipal tender reviews in Saudi Arabia.

Many residential boundary landscape projects in Jeddah set U2 or lower uplight grading as reference requirements; new municipal park RFQ documents generally take B0 and G0 as preferred indicators to meet local light pollution control regulations.

A core advantage of complete goniophotometer TM-15 testing: luminous flux, CCT, CRI and full BUG grading data are integrated into a single IES test file, eliminating the need for separate laboratory certification materials for tender submission.

If you need to check IES / TM-15 photometric test documents or select BUG-compliant boundary bollards for Saudi villa and municipal landscape tenders, check our technical tender support workflow via About Us.

Submit project boundary layout drawings to obtain matched bollard photometric parameters and customized tender specification wording support.

This TM-15 BUG photometric guide for 4W landscape bollards originally published in 2022 and fully revised in July 2026, covering IES lab test standards and light pollution control requirements for Saudi Gulf residential & municipal projects.

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