Optical system and exposure machine

Abstract

The invention is applicable to the technical field of optics, and provides an optical system, aiming at solving the problems that an ultraviolet exposure lamp is poor in parallelism degree and energy uniformity in the prior art. The optical system comprises a UV-LED area light source component for offering an area light source, a cold light mirror for reflecting ultraviolet light emitted from the UV-LED area light source component, a compound eye light evening component for receiving and transmitting the ultraviolet light reflected from the cold light mirror, an optical mirror for receiving the ultraviolet light transmitted from the compound eye light evening component and transmitting and / or reflecting the ultraviolet light, and a reflector for receiving the ultraviolet light reflected from the optical mirror, wherein the reflector is used for reflecting the received ultraviolet light to the surface of a negative film for pattern transfer. Furthermore, the invention also provides an exposure machine. According to the optical system, since the UV-LED area source component is used for emitting the ultraviolet light and offering the area light source, and the ultraviolet light is transmitted onto the surface of the negative film in a parallel manner after being reflected by virtue of a light system, the parallelism degree and the energy uniformity of the incident ultraviolet light can be guaranteed.

Description

technical field [0001] The invention belongs to the field of optical technology, and in particular relates to an optical system and an exposure machine with the optical system. Background technique [0002] Printed Circuit Board (PCB), also known as printed circuit board or printed circuit board, is an important electronic component, a support for electronic components, and a provider of electrical connections for electronic components. Because it is made using electronic printing, it is called a "printed" circuit board. [0003] Printed circuit boards need to go through multiple processes in the production process to get the final product. Among them, an important process is to use optical exposure to transfer images between negatives and printed circuit boards, and the exposure machine is the key equipment for image transfer. , The quality and precision of the printed circuit board depend largely on the exposure quality. Within the effective exposure area of ​​the exposu...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an optical system with a UV-LED surface light source assembly that provides a surface light source, aiming to solve the problems of poor parallelism and energy uniformity of ultraviolet exposure lamps in the prior art

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