Cartoon: The difference of downlight and spotlight application!


The Difference between Downlight and Spotlight

Downlights and spotlights look very similar in shape, but they are different in many ways. What is the difference between them?

With the small size and changeable shape of LED as the light source, the downlight and the spotlight have evolved into an integrated lamp. Once it becomes a lamp, it should be considered from the two dimensions of shape and light.


Downlight: a small vertical downward luminous lamp

Spotlight: A lamp with adjustable direction, which focuses on a small area and plays a key role in lighting.


When no longer excessively pursuing the uniform lighting when "one lamp lights the whole house", the downlight and the spotlight step onto the "broader stage", providing the layers of light in the home life, the construction of atmosphere, the prominent focus, the restoration of detail quality, and even the uniform lighting.

In order to provide these different lighting scenarios for life, it is necessary to control the light carefully. The light is realized by the property of "beam angle".

In terms of light, there is no obvious boundary between the downlight and the spotlight, and the application is planned by the degree of the beam angle.

Narrow beam angle 15°

Wide beam angle 37°

Ultra Wide Beam Angle 60°

So far in Europe, downlight is now unified, which can be divided into rotary downlight (better direction control) and fixed downlight. So from now on, we need to remember the concept of beam angle.

How to choose a downlight with beam angle?

The beam angle of the conventional downlight and spotlight is achieved by refracting the reflecting cup or lens:

Reflection cup


Human Eye Identifying the Advantages and Disadvantages of Reflective Cup or Lens

Observing the fineness of a reflecting cup or lens, it is often better to have clear and uneven diamond corners on the inner wall.

Selection of downlight and spotlight

The First Principle of Home Lighting Design: Reduce Glare and Increase Brightness.

▲ The left and right lights have the same brightness and beam angle. Why does the left side glare? And soft and comfortable on the right?

The difference is that the shading angles of the two lamps are different. The girl on the right sits in the shading area of the lamp. she can't see the light source on the surface of the lamp. Without glare, she can't see. As the saying goes, "Not too bright, but too direct".

Selected lights

1.Choose lamps with "shading angle" of about 45 degrees.

​​​​​​▲ Shielding angle: the splice between the tangent and horizontal lines of the light source.


▲ Luminaires with a Shielding angle below 30° will produce great brightness and glare to the human eye. One of the criteria for judging the design of a luminaire is the shading angle of 45 degrees or more.

2. If the ceiling-mounted embedded lamps are suspended, the height of the lamps should not be too high.

3. If there is no ceiling, choose open-fitting lamps and lanterns.

Application of downlight and spotlight

Adjust the direction of light output, control the angle of shading, so that the lamp from direct lighting to indirect lighting.

▲Finely adjust the angle of the inner ring of the dark projector, the direction of light output changes, and people appear in the Shielding angle. downlight from direct lighting to indirect lighting

▲ The track light turns to the wall and reflects the light to the eye through the wall. It is soft and comfortable. Direct light becomes indirect light.

Indirect illumination differs from direct illumination in whether it is refracted by medium or not. The regulation principle is: wiping the wall without illuminating the wall, controlling the shading angle and avoiding glare.

▲The left light fixture illuminates the wall vertically, which makes the part too bright. The refraction of the wall produces human eye glow and even glare. On the right, the light rubs against the wall and the light is gentle and even

We tell the difference, selection and application of downlight and spotlight in the form of cartoon. We hope that you can understand and understand that the fixed position of the downlight comes out from top to bottom. As for how wide the illumination coverage is, we can see the angle of the light beam. We need to choose spotlight when we make a diversified scheme of lighting through lamps , and we can also realize common lighting and key lighting. And so on. By following these principles, you can also become a small light technician.