scholarly journals Retinal projection type super multi-view 3D head-mounted display using the time division projection optical system

2018 ◽  
Author(s):  
Tadayuki Konda ◽  
Kayo Yoshimoto ◽  
Hideya Takahashi ◽  
Katsuhisa Tanaka
Keyword(s):  
Optical System ◽  
Retinal Projection ◽  
Head Mounted Display ◽  
Time Division

scholarly journals Focus-Adjustable Head Mounted Display with Off-Axis System

2020 ◽  
Vol 10 (21) ◽  
pp. 7931
Author(s):  
So Hyun Seo ◽  
Jae Myung Ryu ◽  
Hojong Choi
Keyword(s):  
Optical System ◽  
Optical Axis ◽  
Focal Length ◽  
Normal Vector ◽  
Effective Focal Length ◽  
Head Mounted Display ◽  
Conventional Methods ◽  
Angle Of Reflection

An off-axis system refers to an optical system in which the optical axis and the normal vector at the vertex of each surface do not match. An off-axis optical system can be applied in order to construct a thin and light optical system. In particular, the optical system used for a see-through head-mounted display (HMD) must be designed asymmetrically, with respect to the optical axis. Because the vision of a human is different for each individual, HMD requires focus adjustment. The effective focal length (EFL) of the optical system must be calculated to obtain the focus adjustment. However, the off-axis optical system cannot be calculated by conventional methods. In this study, the EFL was calculated by rotating the coordinates of the rays near the optical axis by the angle of reflection or refraction at the intersection of each surface, with the rays coinciding with the optical axis. The magnitude of movement of the micro-display for focus adjustment was obtained from the calculated EFL, for a see-through type HMD.

Optical System Design of Head-Mounted Display Based on Planar Waveguide of Semi-Transparent Film Array

2014 ◽  
Vol 34 (9) ◽  
pp. 0922001
Author(s):  
呼新荣 Hu Xinrong ◽  
刘英 Liu Ying ◽  
王健 Wang Jian ◽  
孙强 Sun Qiang
Keyword(s):  
System Design ◽  
Optical System ◽  
Planar Waveguide ◽  
Transparent Film ◽  
Optical System Design ◽  
Head Mounted Display

Design of Off-Axis Head-Mounted Display Optical System Based on Two Reflective Optical Free-Form Surfaces

2018 ◽  
Vol 38 (7) ◽  
pp. 0722003 ◽  
Author(s):  
叶井飞 Ye Jingfei ◽  
徐凯迪 Xu Kaidi ◽  
杨明珠 Yang Mingzhu ◽  
宋真真 Song Zhenzhen ◽  
裴世鑫 Pei Shixin ◽  
...  
Keyword(s):  
Optical System ◽  
Free Form ◽  
Head Mounted Display ◽  
Free Form Surfaces

Design of compact optical system in wide-angle head mounted display

2012 ◽  
Vol 20 (5) ◽  
pp. 979-987 ◽  
Author(s):  
卢海平 LU Hai-ping ◽  
刘伟奇 LIU Wei-qi ◽  
康玉思 KANG Yu-si ◽  
魏忠伦 WEI Zhong-lun ◽  
冯睿 FENG Rui ◽  
...  
Keyword(s):  
Optical System ◽  
Wide Angle ◽  
Head Mounted Display

Analysis of retinal images for retinal projection type super multi-view 3D head-mounted display

2017 ◽  
Vol 2017 (5) ◽  
pp. 188-193
Author(s):  
Takashi Emoto ◽  
Tadayuki Konda ◽  
Kayo Yoshimoto ◽  
Hideya Takahashi
Keyword(s):  
Retinal Images ◽  
Retinal Projection ◽  
Head Mounted Display
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