Lens system suitable for LED road lamp
A technology of LED street lamps and lens systems, which is applied in the direction of condenser mirrors, components of lighting devices, semiconductor devices of light-emitting elements, etc.
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no. 1 example
[0082] see Figure 1a-1c As shown, the lens system suitable for LED street lamps according to the first preferred embodiment of the present invention is a wide-beam lens system 10, which is mainly composed of at least one LED illuminant 11 and a lens 12, and the edge of the lens is fixed on the On the mounting board 13 of the LED illuminant 11, the lens 12 is composed of an incident surface 12d, a light-emitting surface 12a, an outer lens edge surface 12b, an inner lens edge surface 12e and a transition curved surface 12c.
[0083] The focal point of the incident surface 12d of the lens 12 is near the center of the LED luminous body 11, the wrap angle of 1 / 10 peak light intensity of the LED luminous body 11 is 170°, and the direction of the optical axis of the LED luminous body 11 is the central axis of the lens 12, which is All the light emitted by the LED illuminant 11 hits the incident surface. At the same time, since the loss of light through the medium is related to the in...
no. 2 example
[0085] like Figure 2a-2c As shown, the second preferred embodiment of the present invention is a lens system suitable for LED street lamps, which is a narrow beam lens system 20, mainly composed of at least one LED illuminant 21 and a lens 22, and the edge of the lens is fixed on the On the mounting plate 23 of the LED illuminant 11, the lens 22 is composed of an incident surface 22d, a light emitting surface 22a, an outer lens edge surface 22b, an inner lens edge surface 22e and a transition curved surface 22c. The wrap angle of the concave curved surface 22d of the incident surface of the lens is appropriately reduced, and the wrap angle of the light exit surface 22a is also adjusted accordingly. At the same time, the curvature of the convex surface is appropriately increased, and the light passes through the lens and is refracted by the light exit surface 22a to form an X-axis direction of 50°-60° , the Y-axis direction is 20°-30°, which is close to a rectangular spot. Suc...
no. 3 example
[0087] like Figures 3a-3c As shown, the third preferred embodiment of the present invention is a lens system suitable for LED street lamps, which is a medium beam lens system 30, mainly composed of at least one LED illuminant 31 and a lens 32, and the edge of the lens is fixed on the On the mounting board 33 of the LED illuminant 11, the lens 32 is composed of an incident surface 32d, a light emitting surface 32a, an outer lens edge surface 32b, an inner lens edge surface 32e and a transition curved surface 32c. The concave surface 32d of the incident surface of the lens has a wrapping angle close to the half-peak light intensity wrapping angle of the LED illuminant, which is 120°, and the wrapping angle of the light-emitting surface 32a is within 30°, with a large curvature, and the light is concentrated in a small range to form a spotlight beam. The X-axis direction is 25°-30°, and the Y-axis direction is 10°-15°, which is close to a rectangular spot. The central light inte...
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