3 August 2023
Lenses vs Reflectors

It’s time to shed some light on the age-old debate of lenses versus reflectors. Picture this as a friendly duel between two enchanting optical warriors, each with its own set of strengths and quirks.

When it comes to lighting technology, LED chips emit light in a 180° dispersion, which is often too broad for practical use. To control and harness this light effectively, a secondary optical component is required. The two primary choices are reflectors and lenses, each with its own distinct advantages and disadvantages for interior and exterior lighting applications.

Directing Light with Tradition

Reflectors are well-established tools for controlling the direction of light beams. They are cone-shaped components that surround the LED chip and alter the direction of its widest light rays. They come in various materials such as plastic, metal, or glass, with a solid internal coating that efficiently reflects any light that strikes their surface.

However, reflectors do have limitations. While they direct the majority of light rays, the central rays from the LED chip remain unchanged, causing some dispersion beyond the intended beam angle. As a result, when high accuracy in narrow beam angles is required, reflectors may not be the most suitable choice.

Mastering Light Control

Lenses, on the other hand, offer a more sophisticated method of controlling light beams. These solid plastic components operate on the principle of refraction, covering the entire LED chip to capture and control all emitted light rays.

Lenses work in two stages: first, a concave moulding at the centre of the lens redirects the central light rays outward, enabling them to be captured in the second stage. Then, the outer moulding of the lens collects the widest rays of light, including those redirected in the first stage, and reflects them inward to achieve the desired beam angle.

As a result, lenses are highly effective in controlling light, even over greater distances. They provide a higher degree of accuracy, reduced glare, and better visual comfort, making them ideal for applications where precise beam control is paramount.

Balancing Efficacy and Control

In interior lighting scenarios, both reflectors and lenses find their place depending on the specific requirements of the project.

Reflectors offer good efficacy and relatively low cost, making them a popular choice for general lighting needs where precision is not the primary concern. Their straightforward design and effectiveness in redirecting light suit various applications, especially when tight budgets are a consideration.

On the other hand, lenses excel in interior settings where precision and visual comfort are essential. For applications like accent lighting, display lighting, and task lighting, lenses ensure accurate beam control, reduced glare, and an overall refined lighting experience.

Extending Light Across Distances

In the realm of exterior lighting, reflectors and lenses play their roles with different strengths.

Reflectors are suitable for illuminating architectural features, landscapes, carparks, and large outdoor spaces. Their reliable light control and efficiency make them a practical choice for efficiently lighting up these vast areas.

Lenses, with their ability to control light more accurately over longer distances, excel in exterior applications that require precise beam angles, reduced light spill, and minimal glare. Lighting up pathways, façades, and other architectural details benefits greatly from the precision offered by the lens.


In this dazzling world of optics, BEGA is a name synonymous with brilliance and innovation. Their specialty optics, including BEGA Hybrid Optics®, BEGA Vortex Optics®, BEGA Constant Optics®, and BEGA Ultradark Optics®, elevate illumination to new heights.

These downlights from BEGA use their Hybrid Optic. This combination of lens and reflector takes advantage of both the lens and reflector technology. The resulting optical systems are highly efficient, feature low-loss and optimised glare suppression as well as very compact dimensions. They also do not use synthetic lenses for this purpose, but rather materials such as glass, aluminium and silicone that are permanently resistant to ageing.
Product: BEGA Ceiling Luminaire

Through the use of precision reflectors, the light is cast very uniformly onto the useful area from these Pole Luminaires.
Product: BEGA Pole Top Luminaire

Complete Lighting Control

With BEGA Hybrid Optics®, witness a spectacle of light control like never before. Optimum refraction and reflection come together in a symphony of precision. Calculated reflectors with pure aluminium surfaces and ultra-clear silicone or glass lenses capture every beam of light, maximizing application efficiency and setting new standards in lighting brilliance.

Twisting the Norm

Enter the mesmerising world of BEGA Vortex Optics®, where specially developed twisted reflectors with pure aluminium surfaces create intense light bundling and optimal deflection. The result is an impeccable light distribution, free from artifacts, and exceptional visual comfort that complements their LED modules with finesse.

The Everlasting Glow

BEGA Constant Optics® is the epitome of durability and wear-free performance. With glass, pure aluminium, and silicone as its allies, this optical system defies aging and extreme conditions, ensuring a lasting glow that stands the test of time.

The Art of Minimalist Brilliance

For those seeking technical luminaires with minimal diffuse light, BEGA Ultradark Optics® emerges as a beacon of efficiency and eye comfort. A combination of internal louvres and an ultra-black nano-coating inside the luminaire minimises diffuse light percentage, offering a glare-free, efficient, and captivating lighting experience.
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