Sunshine Opto-electronics Enterprise Co.,ltd company_faq

SMD LED (Surface Mounted Device) and COB LED (Chip on Board) are two of the most widely used LED types in modern lighting projects. SMD LEDs use multiple individual LED chips mounted on a board, while COB LEDs integrate many chips into a single lighting module.

For general lighting and flexible LED module design, SMD LEDs are often preferred. However, for high-power applications such as outdoor lighting and street lighting, COB LEDs usually provide more uniform light output and better optical performance.

Yes, we do. We can customize lenses based on specific LED chip models, beam angles, shapes, and materials, catering to a wide range of applications across indoor, outdoor, industrial, and agricultural settings.

Clear Lens: Offers high brightness and excellent light concentration, making it suitable for spotlighting and accent lighting applications. Frosted/Diffusing Lens: Features low glare and produces soft, diffused light, making it ideal for general ambient lighting in indoor environments.

Transmittance refers to the ratio of light passing through a specific material at an average thickness of 3mm.
The transmittance of pure PMMA raw material is approximately 93%, while that of pure PC raw material is approximately 91%.
However, the actual transmittance of a lens is not a fixed value; it is influenced by various factors such as shape, thickness, mold quality and surface finish, and the injection molding process. Generally speaking, what our clients are truly interested in is the light utilization efficiency.
Light utilization efficiency is primarily determined by the quality of the optical design, the manufacturing rigor of the facility, and the specific characteristics—including beam angle—of the lens product in question.
The actual light utilization efficiency of a product is calculated as follows: Optical Design Efficiency × Losses from Molding and Injection Processes × Product Transmittance.

This is not recommended.
Different materials possess different refractive indices; mixing them will result in uneven light distribution and chromatic aberration (color distortion).
Whenever possible, use lenses made from a single, uniform material within any given lighting fixture.

The most conventional market solution for eliminating yellow spots in lenses is to incorporate a frosted finish or a "fish-scale" texture to enhance light mixing, or simply to mask/block out the yellow light component. While this is the simplest and most widely adopted method, it comes with a drawback: it not only blocks the faint yellow light but also obstructs a portion of the useful light output, resulting in reduced overall luminous efficacy.

Generally, the design lifespan of high-quality LED streetlights is typically 50,000 hours. In the LED industry, there's a common term: L70 standard. The industry typically defines the lifespan of a luminaire as when its brightness decays to 70% of its initial brightness. Therefore, 50,000 to 100,000 hours is only the theoretical lifespan of an LED light when it meets the L70 standard. At this point, it may still be lit, but the illuminance will no longer meet safety standards.
Furthermore, the lifespan of LED streetlights is also affected by factors such as the LED driver power supply, heat dissipation design, LED chip quality, IP protection rating, and environmental conditions.

In a word, if the LED power supply is replaced in a timely manner (every 5-7 years), its actual service life is approximately 8-15 years.

Yes, LED street lighting can be easily integrated with smart city technologies. Features such as remote monitoring, automatic dimming, and smart sensors can be added to LED street lights to achieve better energy management, improved safety, and reduced operating costs. Smart city integration also allows for data collection and real-time adjustments based on factors such as traffic, weather, or time.

Yes, it requires regular maintenance. LED lights typically have a lifespan of 50,000 hours or so, much longer than traditional lights. Maintenance typically includes occasional cleaning of the lampshades and checking for problems with wiring or the control system. Please refer to our previous blog.

The time required to upgrade street lighting depends on the size of the project and the number of lights that need to be upgraded. Small projects may take only a few weeks, while large-scale urban redevelopment projects may take several months. Because it utilizes existing infrastructure, the installation process is usually faster than a complete replacement.