Symmetrical structured LED light-total-reflection collimation system with theoretically lossless lighting effects

[0020] The high-efficiency LED light total reflection symmetrical structure collimation system includes an LED light source module 1, an improved ellipsoidal reflector 2, a first parabolic reflector 3, and a second parabolic reflector 4. The light source 1 of the LED module is placed at the first focal point of the ellipsoidal reflector 2, and the first parabolic reflector 3 is located below the ellipsoidal reflector 2, and its focal point coincides with the second focal point of the ellipsoidal reflector 2. The focal point of the second parabolic reflector 4 is located at the geometric center of the LED light source 1, and the entire system has a left-right mirror symmetrical structure. A part of the light emitted by the LED module light source 1 passes through the ellipsoidal reflector 2 to converge at the second focus of the ellipsoidal reflector 2, and then passes through the first parabolic reflector 3 to form collimated light. The LED module light source 1 emits The remaining part of the light directly passes through the second parabolic reflector 4 to form collimated light. All light emitted by the light source LED is reflected by the system to form collimated light, with a utilization rate of 100%.

[0021] Such as figure 1 , figure 2 Shown is a schematic structural diagram of a collimating system with a high-efficiency total reflection symmetrical structure using an LED light source according to the present invention. In one embodiment, a single-chip COB packaged white LED module 1 is used as the light source, the driving voltage is 3.3 V, the current is 300.0 mA, and the ellipsoidal reflector 2 has a length of 60 mm and a diameter of half of 60 mm. The first focus is The center position of the LED light source, the second focus is 60mm from the center of the LED light source in the length direction of the ellipsoidal reflector 2; the focal point of the parabolic reflector 3 is at the second focus position of the ellipsoidal reflector 2, the focal length is 27mm; the focal point of the parabolic reflector 4 is at the LED light source Center position, focal length 57mm.

[0022] The light emitted by the LED light source is completely converted into collimated light after passing through the collimating system of the present invention, and the light energy utilization rate reaches 100% in theory.

[0023] The invention has the following characteristics:

[0024] 1. Using LED as the light source, the length of the modified second parabolic reflector 4 is as the beam angle of the light reflected by the modified ellipsoidal reflector 2 in the light emitted by the LED module 1 Changes when When the angle becomes larger, the length of the modified second parabolic reflector 4 should be extended accordingly to ensure The light inside is completely collimated and exits. When the half-beam angle of the LED is so small that it is completely reflected by the improved ellipsoidal reflector 2, the length of the improved second parabolic reflector 4 becomes zero;

[0025] 2. Such as figure 1 As shown in the structure, the improved ellipsoidal reflector 2 is designed based on a standard ellipsoidal reflector. When the LED light source 1 can be regarded as a point light source, the reflector adopts a standard ellipsoidal structure. When the LED light source 1 is a When expanding the light source, the reflector adopts an improved ellipsoidal reflector 2 to ensure that the light emitted by the LED surface light source can converge near the second focal point. When the improved ellipsoidal reflector 2 has a diffuse spot diameter at the second focal point as 1/10 or less of the maximum clear aperture of the system, the improved first parabolic reflector 3 adopts a standard parabolic structure, when the improved ellipsoidal reflector 2 has a diffuse spot diameter at the second focal point greater than the maximum clear aperture of the system When the reflector is 1/10, the reflector adopts the improved first parabolic structure to ensure that the light emitted by the improved ellipsoidal reflector 2 at the diffuse spot at the second focal point can be collimated and emitted by its reflection. The improved second parabolic reflector 4 adopts a standard parabolic structure when the LED light source 1 can be regarded as a point light source approximately. When the LED light source 1 is an extended light source, an improved parabolic structure is adopted to ensure that the LED is The direct light in the angle can be collimated and emitted by its reflection;

[0026] 3. Such as figure 1 The LED light total reflection collimation system shown theoretically without loss of light efficiency can theoretically collimate the beam energy emitted by the LED light source 1 to 100%, with only the reflection loss of the reflector, and the reflectance of the reflector can reach 95 % Above or higher, and the system is completely designed with a total reflector without any lens structure, so the collimating optical system is highly efficient.