Design of coaxial short focal length catadioptric projection system

Jian-ming, 杨建明 Yang; Wei-qi, 刘伟奇 Liu; Xiang-xiang, 孟祥翔 Meng; Rui, 冯睿 Feng; Zhong, 孟 中 Meng; Da-liang, 张大亮 Zhang

doi:10.3788/yjyxs20153005.0864

液晶与显示

2015

DOI: 10.3788/yjyxs20153005.0864

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Design of coaxial short focal length catadioptric projection system

杨建明 Yang Jian-ming¹,

刘伟奇 Liu Wei-qi²,

孟祥翔 Meng Xiang-xiang³

et al.

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Cited by 5 publications

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Design of a curved-target ultrashort throw projector based on predistortion and illumination precorrection

Cheng,

Liu,

Chen

et al. 2023

Appl. Opt.

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Ultrashort throw projector (UTP) technology has been a challenging research focus in the fields of large field of view and short-distance projection. In this paper, we propose a design method for a curved-target UTP based on image precorrection. A predistortion method (<1pixel) using a radial basis function is presented to effectively correct irregular distortion. A grayscale precorrection method is used to address uneven illumination distribution. We provide a UTP design example and verify the correction methods using two different curved targets (aspherical and freeform), demonstrating effective distortion correction (<1%) and illumination uniformity (>90%). The structure similarity index measure for the projection images shows close or greater than 0.9 correlation.

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Design of a curved-target ultrashort throw projector based on predistortion and illumination precorrection

Cheng,

Liu,

Chen

et al. 2023

Appl. Opt.

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General construction method for a rotationally symmetric ultrashort distance catadioptric projector

Liu

Zhuang

2016

Appl. Opt.

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In this work, the off-axis imaging of a fan of rays with a rotationally symmetric mirror is studied, based on which a general construction method is proposed for the design of a rotationally symmetric ultrashort distance catadioptric projector. With the proposed method, the intermediate images at arbitrary planes of incidence can be obtained, and thus the designer has the freedom to choose suitable intermediate images to simplify the aberration correction of the catadioptric starting point. To prove the effectiveness of the proposed method, the construction process of a convex-type ultrashort distance catadioptric projector is presented. The intermediate image at the meridional plane is discontinuous, and the image distances for some fields are infinite. In contrast, the intermediate image at the sagittal plane is continuous, smooth, and finite-and thus is selected to correct the skew aberrations in the catadioptric starting point. An initial configuration, which has small aberrations, is obtained without increasing the system complexity. Further automatic optimization is applied to the initial configuration to get the optimal solution. The simulated performance of the optimal solution is excellent.

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Design and engineering verification of an ultrashort throw ratio projection system with a freeform mirror

Tian

et al. 2019

Appl. Opt.

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Design of coaxial short focal length catadioptric projection system

Cited by 5 publications

References 0 publications

Design of a curved-target ultrashort throw projector based on predistortion and illumination precorrection

Design of a curved-target ultrashort throw projector based on predistortion and illumination precorrection

General construction method for a rotationally symmetric ultrashort distance catadioptric projector

Design and engineering verification of an ultrashort throw ratio projection system with a freeform mirror

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