Ricoh has announced a new smart glass.An overview was announced on the Ricoh Site on August 3, 2020, and on August 5, the display -related international society SID DISPLAY WEEK 2020 Symposium (event is from August 3 to 7).。Many people know it because it has been featured in the news.Ricoh, who has optical technology and office devices, has hit the smartglass industry, but Ricoh has been developing smart glass -related technologies such as electric dimming materials for a long time.It is considered that we have aimed to enter this field.This time, it can be imagined that the response between the inside and outside of the inside and outside was large due to the impactful completion form, even though it was a prototype.In this article, we will explain the technologies announced on the SIDs that have not been reported in the news, that is, the two new technologies, which are the identity of this smart glass.By the way, be aware that this smart glass is a prototype for the presentation of academic societies and is not a product announcement.
The rough image is a lightweight AR glass with two eye sea -through, but it can be seen that the line is connected to the outside, and that there are video sources such as smartphones.In fact, there is a conversion module outside, and the power supply is supplied from there.In addition, there is a video source such as a smartphone.
There are two technical points in this announcement.One is the lens part of the glasses made of a special light guide plate, and the other is a relay lens in a temple.Both are basically independent technologies and can be used individually, but this prototype seems to have tune the two together.
Regarding the first light guide, most of the conventional light boards were glass.This is because the precision surface processing at the level that can be used for smart glasses cannot be done without glass.This time is a plastic, which is overwhelmingly advantageous in terms of cost and weight.The detailed mechanism is as shown in the figure below.A slit mirror is stair -shaped on a staircase plastic surface.This slit is very thin and very close to the eyes, so it looks like the screen and the outside world are overlapping.This is the merit of this method for the fact that the front is visible in the see -through and the screen cannot be seen from the outside.As a technology that combines such a light donducted board and a slit image, it is used in Lumus, Microsoft HoloLens, Hitachi LG data storage, Apple patent, etc. This time is all different and plastic processing is possible.It is important in that sense.
Another relay lens is as shown in the figure below.The relay lens itself is widely used in endoscopes, etc., and is a known technology that optically broadcasts images.The new proposal is that you put it in a smart glass temple and bring the display module backward to improve the balance of the weight of the glasses.In fact, many smart glasses have a center of gravity in front, and when they turn down, there are many things that fall down. As a measure to improve, they tie them behind and bring heavy modules such as batteries behind.Measures have been taken.This proposal will be a new solution to.
In this prototype, video transmission is performed with Sony's ECX336C, a high-bright OLED display module and a chip using the V-by-one HS method of Zaine Electronics.Sony's OLED and Zain's transmission chips are very popular in the smart glass industry.The former is the latest very high -brightness.As a result, the viewing angle is 40 degrees, a resolution of 640*400, a 9 -axis sensor (acceleration, angle speed, compass) as a feasible thing in the paper, and the viewing angle is actually completed during the presentation..9 degrees, resolution 640*400, 49.The detailed specifications of 7G have been published.The thick black edge around the lens is a design element that matches the thick temple, and does not seem to have a wiring inside.
In the future, one is likely to be commercialized from Ricoh, and the other is technology provision to other companies or parts provision.As a study, I would like you to aim for further wide viewing angles, high -resolution and transmissions (built -in battery).The fact that the glasses can be configured with plastic and the fact that the weight balance can be brought behind is all important requirements for small AR glasses, and the proposal is a powerful technology.There is a rumor that Apple will release AR glass products soon, and there is an excitement of AR glass overseas, but the AR glass heat in Japan seems to be overwhelmingly low.In the sense that such technology has come out of Japan, I am looking forward to the excitement of this field in the future.
The only unfortunate thing is that I wanted this glass to name it.
It is also explained in the video: YouTube, wearable channel "Ricoh Smart Glass Mechanism" (2020).8.14 postscript)
References
S.Hirano, et al., SUPER-LIGHT SMART GLASSES USING A TASTIC LIGHT GUIDE PLATE,
Prop.2020 Sid Virtual Display Week Symposium
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