超短距投影光学镜头系统

Ultra-short distance projection optical lens system

Abstract

本发明提供一种超短距投影光学镜头系统,该系统由透镜组、第一反射镜及第二反射镜构成。通过采用旋转对称透镜组以降低加工难度使得容易实现,以及采用两个非旋转对称的自由曲面形反射镜以校正光学镜头因大角度投影产生的畸变、色差等。通过本发明,能实现在距离镜头20cm的屏幕上投出40英寸左右画面。
The invention provides an ultra-short distance projection optical lens system, consisting of a lens group, a first reflecting mirror and a second reflecting mirror. Due to the adoption of the rotary symmetrical lens group, processing difficulty is easily reduced; and due to the adoption of the two non-rotary symmetrical free curved reflecting mirrors, the distortion, chromatic aberration and the like of the optical lens due to large-degree projection are corrected. According to the ultra-short distance projection optical lens system, pictures about 40 inches can be projected on a screen 20cm away from the lens.

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Cited By (4)

    Publication numberPublication dateAssigneeTitle
    CN-104345453-AFebruary 11, 2015浙江晶景光电有限公司Ultrashort-focal-length projection lens design method
    CN-104345453-BMarch 23, 2016浙江晶景光电有限公司一种超短距投影镜头设计方法
    CN-105190395-ADecember 23, 2015日立麦克赛尔株式会社投影型影像显示装置
    CN-105190395-BJune 23, 2017日立麦克赛尔株式会社投影型影像显示装置