Wearable Communicator

Revolutionizing workflow with visual data through holographic optical technology and ICT

Wearable Communicator


A revolution in the manufacturing
following the advance of Industry 4.0

As the IoT (Internet of Things) accelerates the 4th industrial revolution, otherwise known as Industry 4.0, on-site innovations in the manufacturing have become an important challenge. The basis for Industry 4.0 are CPS (Cyber Physical Systems), which connect data from real-world sensor networks and other sources with advanced computing capabilities. Konica Minolta has developed a CPS user interface in the form of a wearable display, called the WCc, or Wearable Communicator.

Wearable display, called the WCc, or Wearable Communicator

Konica Minolta's unique “HOE: Holographic Optical Element” technology has solved issues on existing head-mounted displays such as size, weight and obscured visibility. The WCc achieves miniaturization, a light weight, high transparency transmission, vibrant colors, high resolution and a wide field of view. The user can efficiently work hands-free while being provided with relevant operational information.

Konica Minolta is committed to on-site perspectives starting with the customer in providing solutions for manufacturing and shipping using a combination of WCc and ICT, and is contributing to the advancement of not only Industry 4.0, but a wide range of workplace enhancements.

The WCc achieves high transparency transmission, vibrant colors, high resolution and a wide field of view


HOE technology achieves a lightweight,
transparent display module with a wide field of view.

The WCc projects digital information necessary for work overlapped onto the real-world environment seen through the transparent prism. The digital images displayed on the miniature LCD in the upper frame of the glass is guided through a transparent prism and reflected by the HOE to reach the eye.

The key to this system is the proprietary “HOE: Holographic Optical Element” technology. The HOE has two main features; "magnifying" images projected by the miniature LCD, and "filtering" specific wavelengths.

HOE technology achieves a lightweight, transparent display module with a wide field of view

HOE's lens function

Magnification of projected images and module miniaturization

Conventional head-mounted displays which project large digital images onto the eye needed to magnify the image on the miniature LCD. This required the projector itself to be larger and results in too heavy module to use in a real working environment.

The HOE's lens function solves this issue. It works in the same way as a magnifying glass, enlarging the image.

HOE has the same magnification properties as a magnifying lens

WCc takes advantage of this feature to magnify (up to 100 times) the image on the built-in miniature LCD, allowing the users to see the equivalent of a 42-inch display at a distance of 2.5 meters in front of them. Implementing HOE rather than lenses or mirrors as optical elements makes the size of the LCD smaller, which results in a simple, miniaturized and lightweight device.

WCc allows the users to see the equivalent of a 42-inch display at a distance of 2.5 meters

HOE's filtering function

Specific light wavelengths only selected to be reflected

When using a head-mounted display in a working environment, digital images must be easy to see, while also keeping the real-world environment easy to see. However, existing methods did not allow a user to comfortably view digital images and their real-world environment in balanced contrast.

The solution to this was the filtering function of holograms. The focus during development was on how not to reflect all colors (wavelengths) like a mirror, but reflecting only light of certain wavelengths and letting the others pass through.

Diffraction effciency of reflective hologram

The WCc utilized this function to create digital images in RGB colors of specific wavelengths. Konica Minolta developed HOE to only reflect those wavelengths. Digital images are efficiently reflected to the eye by putting the HOE into a prism. Most light from the real-world environment aside from the specific wavelengths pass through the HOE, allowing for natural visibility.

The WCc uses this proprietary HOE filtering capability to display bright, clear, color digital images while also seeing the real world environment clearly. This means that digital images can be viewed clearly even in bright environments and the user can see their real world environment even in the dark.

Konica Minolta created digital images in RGB colors of specific wavelengths and developed HOE to only reflect those wavelengths
High clarity is achieved by filtering only the spectrum of the digital images from the real world environment through the prism.


Expanding business fields through an open platform

The one of main targets for future WCc application is to provide solutions in the manufacturing industry, such as remote work support. With the advent of Industry 4.0 and the mass customization age, the applications for WCc will grow along with the needs to support increasing non-stationery operation in terms of both efficiency and safety.

In addition, WCc uses world standardized internet technology with an open developer platform, allowing for adoption into machine maintenance, medicine, security, tourism and much more. By providing new visual data through the WCc in partnership with innovative partners in every field, Konica Minolta continues to revolutionize client workflow.


Technologies for the Future


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