2. The Fresnel lens is differentiated from traditional LED lamp, in terms of the design of focal length and distance, which establishes the effective emergent light angle.

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The objective lens of the microscope becomes a magnified inverted solid image, the eyepiece of the microscope becomes a magnified orthogonal virtual image, the final image of the microscope is a magnified inverted virtual image; telescope objective lens is an inverted and reduced solid image, the eyepiece of the telescope becomes an orthogonal magnified virtual image, the telescope's final image is a magnified inverted virtual image.

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Telescope is a kind of optical system through the objective lens and eyepiece so that the incident parallel beam of light is still parallel to the shot. There are three kinds of telescopes according to their principles. An instrument that observes electromagnetic radiation from distant objects by collecting electromagnetic waves is known as a radio telescope. In everyday life, telescopes mainly refer to optical telescopes. However, in modern astronomy, astronomical telescopes include radio telescopes, infrared telescopes, and X-ray and gamma-ray telescopes. The concept of astronomical telescopes is further extended to gravitational waves, cosmic rays and dark matter.

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A microscope consists mainly of an eyepiece, an objective lens, a stage and a reflector. The eyepieces and objective lenses are convex lenses of different focal lengths. The focal length of the convex lens of the objective is smaller than the focal length of the convex lens of the eyepiece. The objective lens is equivalent to the lens of a projector. The object is inverted and magnified through the objective lens. The eyepiece is equivalent to an ordinary magnifying glass, through which the real image is made into a positively magnified virtual image

1. With large reflection angle of the LED point lamp-house, the emanative ray spreads the heat and compares severity, making use of the Fresnel lens to gather the light function. The rays will be gathered by using valid scope therefore increase light effect and maximize brightness result.

3. Compared to traditional products, the super thin structure of Fresnel lens enables improved light transmissibility. In addition, it could be applied for various purposes with its small and condensed product design.