Advanced Study of Optical Imaging Systems for Virtual Reality Head-Mounted Displays
Round 1
Reviewer 1 Report
The paper is written in good shape, reviewing current technologies in virtual displays.
I would suggest the paper be more carefully proofread -- for example there is duplication between Lines 39-41 and Lines 44-47.
I would suggest some language editing. The English proficiency is not very strong and might be somewhat misleading.
Author Response
Dear Reviewer,
I would like to extend my sincere thanks for taking the time to review my paper titled Advanced Study of Optical Imaging Systems for Virtual Reality Head-mounted Displays. I appreciate your feedback and are pleased to hear that you found the paper to be in good shape, providing a review of current technologies in virtual displays.
I appreciate your feedback regarding the need for more careful proofreading. I have identified the duplication issue between Lines 39-41 and Lines 44-47 and will take immediate action to correct this error. I deleted the duplicated content from lines 34 to 41. I understand the importance of ensuring the accuracy and clarity of our paper, and I will conduct a thorough review to address similar issues.
Furthermore, I appreciate your suggestion regarding language editing. As non-native English speakers, I will work with a professional editor to improve the language quality of our paper, ensuring that it is clear, concise, and accurately conveys my intended meaning.
Once again, thank you for your valuable feedback and constructive comments. Your suggestions will help me to improve the quality of our paper and I am grateful for your support.
Sincerely,
Zhongju Ren
Reviewer 2 Report
This is a pretty interesting review manuscript related to VR optics technology and development. It has done a well introduction in the historic developed technologies, but in tracking the new VR optics development, the manuscript needs to have some modification before I think it is well done to be published. I listed several aspects need to modify.
1. In the section of Free-form prismatic helmet-mounted display, actually the companies like Limbak and Lynx had done several exploration works in this field, lynx had released the products https://www.lynx-r.com/. And Citation needed.
Larroque, Stan. "First standalone headset for a new generation of mixed reality experiences." In SPIE AR, VR, MR Industry Talks 2022, vol. 11932, p. 119320T. SPIE, 2022.
Benítez, Pablo, Juan C. Minano, Dejan Grabovickic, Julio Chaves, Milena Nikolic, Pablo Zamora, Marina Buljan, Ruben Mohedano, Eduardo Sanchez, and Juan C. Gonzalez. "Multi-channel optics for virtual and mixed reality: present and future." In Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) II, vol. 11765, p. 1176506. SPIE, 2021.
2. In the lens array VR, there is important work missed for citation done by Kiseung Bang.
Bang, Kiseung, Youngjin Jo, Minseok Chae, and Byoungho Lee. "Lenslet VR: thin, flat and wide-FOV virtual reality display using fresnel lens and lenslet array." IEEE Transactions on Visualization & Computer Graphics 27, no. 05 (2021): 2545-2554.
3. In the Pancake system, Figure 9 is not very accurate. Generally, there are two main paths of the pancake optics, 1 is the refractive optics, and the products using this technology is already shipped like Pico 4 pro and Meta quest pro, the other is the diffractive optics + polarization optics. In this technology path, optical power is provided by the flat diffractive optical elements instead of the glass. The polarization optical elements help the system fold and reduce the form factor. Some related papers/citations needed such as:
Maimone, Andrew, and Junren Wang. "Holographic optics for thin and lightweight virtual reality." ACM Transactions on Graphics (TOG) 39, no. 4 (2020): 67-1.
Feng, Xiayu, Lu Lu, Oleg Yaroshchuk, and Philip Bos. "Closer look at transmissive polarization volume holograms: geometry, physics, and experimental validation." Applied Optics 60, no. 3 (2021): 580-592.
Peng, Fenglin, Ying Geng, Junren Wang, Lu Lu, Yang Zhao, Andrew Maimone, Weichuan Gao, Yuge Huang, Jacques Gollier, and Barry Silverstein. "33‐1: Invited Paper: Liquid Crystals for Virtual Reality (VR)." In SID Symposium Digest of Technical Papers, vol. 52, no. 1, pp. 427-430. 2021.
Yin, Kun, Ziqian He, Yannanqi Li, and Shin‐Tson Wu. "Foveated imaging by polarization multiplexing for compact near‐eye displays." Journal of the Society for Information Display 30, no. 5 (2022): 381-386.
Author Response
Dear Reviewer,
Thank you very much for your thorough review of my manuscript on VR optics technology and development. I appreciate your valuable feedback and have carefully considered your suggestions for improvement.
Regarding your first comment, I agree that the manuscript needs to acknowledge the previous work done by companies such as Limbak and Lynx in the field of Free-form prismatic helmet-mounted display. I will incorporate the relevant content of Lynx-R1 products into our manuscript.I replaced the content from lines 297 to 300 with the following: "Lynx Mixed Reality company, led by Stan Larroque and others, has developed the Lynx-R1, a mixed reality (MR) headset display that combines virtual reality (VR) and augmented reality (AR) display capabilities, using a four-piece freeform prism assembly. Figure shows a prototype of the product." And inserted the Lynx-R1 product prototype in Figure 7, and the number of the following pictures has also been changed.
For the second point, I acknowledge the important contribution of Kiseung Bang and his team's work on Lenslet VR. In the section on lens array VR,I have inserted a reference to the work of Kiseung Bang et al. on lines 313-315.
Regarding the third point, I appreciate your insights on the pancake system and the two main paths of the pancake optics. I changed the content of lines 363 to 365 to the following: "Therefore, following this design concept, researchers have developed an optical folding scheme (Pancake lens) that combines refractive optics or polarization theory with a lens array. The pancake optical scheme is based on this combination." And I modified the content of Figure 9, and now its number is Figure 10. I have inserted references to product Pico 4 pro and product Meta Quest pro on lines 398-402. And the prototype of the two products is inserted in Figure 11.I will add the references you suggested, including the works by Maimone and Wang (2020), Feng et al. (2021), Peng et al. (2021), and Yin et al. (2022).
Again, thank you very much for your time and efforts in reviewing my manuscript. I believe that your suggestions will significantly enhance the quality of the manuscript, and I will make sure to incorporate your feedback into my revised version.
Best regards,
Zhongju Ren
Reviewer 3 Report
It was a nice piece of review for the researchers working in the area of "Virtual Reality Head-mounted Displays". The paper is well organized and have sufficient data. There is some space to improve in terms English. I recommend to accept the paper.
At some pla
Author Response
Dear Reviewer,
Thank you for reviewing my paper titled Advanced Study of Optical Imaging Systems for Virtual Reality Head-mounted Displays and for providing us with valuable feedback. I appreciate your positive comments regarding my review on "Virtual Reality Head-mounted Displays" and are pleased to hear that you found our paper to be well-organized and containing sufficient data.
I take note of your suggestion that there is room for improvement in terms of the English language. I will make every effort to improve the English language quality of my paper, and I appreciate your feedback as it helps me to identify areas for improvement.
I am grateful for your recommendation to accept my paper, and I will continue to strive for excellence in my research. I appreciate your support and valuable input, and look forward to your continued feedback in the future.
Thank you again for your time and effort in reviewing our paper.
Best regards,
Zhongju Ren
