Optical Design of Dual-Focal-Plane Head-Up Display Based on Dual Picture Generation Units

Xiangxu Kong; Changxi Xue

doi:10.3788/AOS202242.1422003

Acta Optica Sinica, Volume. 42, Issue 14, 1422003(2022)

Optical Design of Dual-Focal-Plane Head-Up Display Based on Dual Picture Generation Units

Xiangxu Kong^1,2 and Changxi Xue^1,2、*

Author Affiliations

¹School of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun 130022, Jilin , China

²Key Laboratory of Advanced Optical System Design and Manufacturing Technology of Jilin Province, Changchun University of Science and Technology, Changchun 130022, Jilin , China

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Abstract Get PDF(in Chinese)

Figures & Tables(9)

Fig. 1. Internal optical path structure of dual-focal-plane AR-HUD

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Fig. 2. Actual structure of dual-focal plane AR-HUD system and set-up of field of view. (a) Actual structure of dual-focal plane AR-HUD system; (b) set-up of field of view

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Fig. 3. Results of far field when pupil is located in center of eyebox. (a) Spot diagram; (b) MTF; (c) F-TAN (Theta) distortion; (d) grid distortion

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Fig. 4. Results of near field when pupil is located in center of eyebox. (a) Spot diagram; (b) MTF; (c) F-TAN (Theta) distortion; (d) grid distortion

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Fig. 5. Setting of eyebox and minimum MTF and distortion value when pupil is located in four corners of eyebox

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Table 1. Design specifications of AR-HUD

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Table 1. Design specifications of AR-HUD

Parameter	Value
FOV /（°）	Far：10×5；near：5×1
VID /m	Far：7.5；near：2.5
Eyebox size /mm	130×50
Pupil diameter /mm	5
Distortion /%	<5
Wavelength /μm	0.55
PGU	TFT-LCD 800×480 DLP 854×480
MTF at 6 lp·mm^-1	>0.3

Table 2. Distribution of tolerance range of optical system

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Table 2. Distribution of tolerance range of optical system

Mirror

Radius

delta /mm

Irregularity per fringe

Thickness /mm

Decentered

distance in X direction /mm

Decentered

distance in Y direction /mm

Tilt angle in X direction /（°）

Tilt angle in Y direction /（°）

0.2

0.1

0.2

0.1

Table 3. Monte-Carlo analysis results of far plane image at E3 pupil
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Table 3. Monte-Carlo analysis results of far plane image at E3 pupil
Percentage /% Average MTF
90 0.37146524
50 0.40804404
10 0.42786411

Table 4. Monte-Carlo analysis results of near plane image at E2 pupil
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Table 4. Monte-Carlo analysis results of near plane image at E2 pupil
Percentage /% Average MTF
90 0.39292137
50 0.40904404
10 0.41950030

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Xiangxu Kong, Changxi Xue. Optical Design of Dual-Focal-Plane Head-Up Display Based on Dual Picture Generation Units[J]. Acta Optica Sinica, 2022, 42(14): 1422003

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