The utility model relates to a three chip LCOS laser projection display optical engine, including red, green and blue laser, three beam shaping system, light nucleus, three pieces of LCOS, a mirror, a projection lens, light emitting Center three laser beam shaping system located in the corresponding main axis, and three. Optical axis parallel shaping system; three beam three emitted by the laser beam shaping system respectively through adjustment for uniform rectangular parallel beam, wherein the light beams directly into the corresponding polarization beam splitter, a polarization beam splitter beam of light reflected by the mirror into the corresponding color light by light, the final synthesis of white light projection into the nucleus objective; to laser generated by the laser is linearly polarized, narrow bandwidth without filter, eliminating a large number of polarizer, while reducing costs The utilization ratio of light energy is improved, and the optical engine is better than the existing projection system in the range of color gamut, the degree of color brilliance and the fidelity of color.
【技术实现步骤摘要】
本技术涉及一种三片式LCOS激光投影显示用光学引擎,属于激光显示技术 领域。
技术介绍
投影显示技术经过几十年的的发展,逐步走向成熟,并得到广泛的应用。目前投影 显示技术主要分为CRT、IXD、DLP、LCOS四类。CRT投影显示技术发展时间最长,技术最成 熟,但由于其亮度低、显示尺寸有限、体积大、笨重、调整复杂且长时间显示静止画面会使阴 极射线管产生灼伤等缺点,目前已很少使用;LCD投影显示技术近十年来发展十分迅速,它 具有体积小、重量轻、操作简单、成本低等优点,但它存在光利用率低、像素感强等缺点;DLP 投影显示技术,是目前唯一的全数字投影技术,其成像器件是DMD,它具有光能利用率比较 高、响应速度快、亮度和色均勻性好、体积小、重量轻等优点;而LCOS投影显示技术则结合 了 IXD和DLP两种投影显示技术的优势,具有如下优点(1)分辨率高、图像细腻;(2)开口 率高、光能利用率高、亮度高;(3)对比度比IXD高,可达2000:1 ; (4)和DLP面板一样能直 接反射光而使面板不易被灼伤;(5)无残影现象。无论何种投影显示技术,光源都是保证其颜色逼真,图像色 ...
【技术保护点】
1. 一种三片式LCOS激光投影显示用光学引擎,包括光源、投影物镜、由三个偏振分光棱镜和一个X型合光棱镜以及分别设于三个偏振分光棱镜外侧的LCOS组成的光核,所述光源发出的光束通过光核射入投影物镜,其特征在于,所述光源为红、绿、蓝激光器,该三色激光器与光核之间设有三个光学结构相同的用于将相对应激光器发射的激光束调整为均匀矩形平行光束的匀光整形系统,所述三激光器的发光中心位于相应的匀光整形系统的主光轴上,且三匀光整形系统的主光轴相互平行;三激光器发出的三光束分别通过匀光整形系统调整为尺寸合适的均匀矩形平行光束后,其中两束光直接射入对应的偏振分光棱镜,另一束光通过反射镜的反射后 ...
【技术特征摘要】
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