Current LEP flashlight products on the market generally do not exceed 1000 lumens. The Blue Lake ZT4 applies high-power LEP technology, previously used in special vehicle lighting, to flashlights for the first time—introducing the world’s first 3000-lumen LEP light source designed for the mobile lighting market.
- Product | ZT4 LEP Engine
Specifications:
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Product Name: ZT4 LEP
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Input Power: 40W
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Luminous Flux: 3000 lumens
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Luminance at Emitting Spot: 780 cd/mm²
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Dimensions: Ø32mm × 24mm (L)
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Driver Requirement: Constant-current driver, supports thermal protection
Measured Performance with 40mm Reflector Cup:
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Illuminance at 15m: 4356 lux
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Beam Distance: 1980m
- Principle | From Phosphor Crystal to High-Brightness White Light
ZT4 adopts a blue-laser-excited phosphor coating LEP white-light solution: the blue laser is precisely collimated and directed onto a proprietary phosphor layer, generating a broad-spectrum yellow light, which combines with the residual blue light to form near-white light. This output is then shaped by a reflector cup or secondary optics to produce a controllable, long-throw, high-intensity beam.
Shanghai Blue Lake Lighting Technology Co., Ltd. invented and mass-produced phosphor coating materials dedicated to LEP, making “laser-to-white-light” possible. Through continuous material and formula optimization, both lumen output and beam intensity have been enhanced, leading to the birth of the 3000-lumen ZT4. Blue Lake Lighting has long-term expertise and patents in white laser materials and devices.
- Company Profile | Shanghai Blue Lake Lighting Technology Co., Ltd.
Founded: 2015
Positioning: A high-tech enterprise focused on white laser illumination (LEP/white laser) as its core competitiveness, dedicated to R&D and innovation; long-term focus on laser lighting, display, and specialty illumination sources.
Industry Contribution: Blue Lake Lighting is the pioneer of LEP light sources for flashlights. Since its founding in 2015, the company has consistently advanced white laser/LEP technology and worked with partners to drive real-world applications. After 10 years of development, it has become a key supplier of light sources and solutions for numerous LEP flashlight brands.
Applications: Products are widely used in automotive lighting, drone lighting, stage lighting, projection display, and professional mobile lighting.
Application Scenarios & Engineering Notes
Target Applications:
Ultra-long-throw tactical/search-and-rescue flashlights, engineering and surveying pointers, vehicle-mounted searchlights, and specialty lighting systems.
System Integration Recommendations:
For 40W class: pair with high-thermal-conductivity housing + effective airflow design.
Requires constant-current driver + thermal/over-temperature protection; avoid transient over-voltage/over-current.
Reflector cup parameters (aperture, depth, surface coating) significantly affect beam distance and edge spill; secondary optical design and thermal simulation should be based on target application.
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Email: renpeng.shi@bl-light.com
For more details, please visit the official English website:
en.bl-light.com
