digital light processing optomechanical

Abstract

The invention discloses an optical machine for digital light processing. An optical modulation module and a second optical path module are stacked on the upper end of the first optical path module, so that in a three-dimensional coordinate system with the connection point between the optical modulation module and the first optical path module as the coordinate origin Among them, the propagation direction of the optical path is: reaching the projection lens along the negative direction of the X axis, the positive direction of the Z axis, and the positive direction of the X axis in turn; the projected area on the XOZ plane is larger than the projected area of ​​the digital light processing optical machine on the XOY plane; the first optical path module The side wall is provided with support feet extending along the negative direction of the Z-axis, and the support feet are used to support the first optical path module, so that there is an interval between the lower cover and the end face of the worktable; A plurality of terminals for optical device connection, and a plurality of thermal vias provide channels for conducting heat. The heat dissipation effect of the digital light processing optical engine is improved, and the total area of ​​the digital light processing optical engine is also reduced.

Description

technical field [0001] The invention relates to the technical field of DLP projection, in particular to a DLP micro-projector and its optomechanical and digital light processing optomechanics. Background technique [0002] Micro projection technology is a new type of modern projection display technology. It gradually penetrates into people's daily life by virtue of its miniaturization and portability, and has gradually become an important development trend of projection display. The Digital Light Processing (DLP) projection display method has the characteristics of high brightness, high contrast and high resolution. Combined with the new LED light source, it realizes a miniaturized portable micro-projection, which satisfies people's portable and free projection display. demand. [0003] The projected image quality of a DLP projector is closely related to the optical path and the way the optical components are fixed. In DLP projectors, three-color (R, G, B) diodes (LEDs) ar...

AI Technical Summary

Problems solved by technology

Although this method can improve the installation accuracy to a certain extent, with the long-term operation of the optical machine, on the one hand, it is easy to deform the structure of the whole machine due to the heat of the environment and the light source, and the interaction between different optical modules, especially At the junction where the propagation direction of the optical path changes, it is easy to cause errors in the optical path propagation, resulting in poor optical path accuracy and reduced energy utilization; on the other hand, since each module is installed in the same housing, it is not conducive to the Cooling of the modules, i.e., lack of sufficient cooling space

[0005] In addition, the one-piece main casing has fewer installation ports. Therefore, in order to facilitate the installation of lens groups and optical-mechanical modules, a horizontal structure is usually selected, that is, the lens group, optical-mechanical modules, and lens barrels are laid flat on the same surface. On the horizontal plane, this will lead to a larger footprint of the DLP projector or the optical machine, which does not meet the miniature technical pursuit of the micro projector

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