Shading device

A shading device comprising:

• a shading member formed using a dimming glass plate that is capable of changing light transmittance, the shading member having a plate shape;
• an organic EL display panel being separate from the dimming glass plate and capable of transmitting light, wherein the organic EL display panel is disposed on a surface of the shading member, the surface being to face an operator during use of the shading member;
• an image pickup device to pick up, as an image, a region which an opposite surface of the surface faces, and generate image pickup data;
• and
• a switch to change light transmittance of the dimming glass plate, wherein
• the organic EL display panel displays, thereon, an image based on the image pickup data;
• the organic EL display panel comprises a plurality of subpixels, each one of the plurality of subpixels comprising a cathode and an anode;
• the cathode and the anode are disposed with a gap between the cathode and the anode, the gap having a length different from a wavelength of light emitted from each one of the plurality of subpixels so that a micro-cavity effect is not utilized in each one of the plurality of subpixels;
• the shading device further comprises:
• a detector to detect a position of the shading member,
• a control circuit to control the organic EL display panel to an OFF state when the light transmittance of the dimming glass plate is greater than or equal to a given reference value, and control an ON/OFF state of the organic EL display panel based on a result of detection of the detector when the light transmittance of the dimming glass plate is less than the given reference value, and
• a sensor capable of detecting intensity of light, the sensor being provided on each of the surface and the opposite surface of the shading member;
• and wherein
• the control circuit controls the organic EL display panel to the OFF state in a case where a difference in output between the sensor being provided on the surface of the shading member and the sensor being provided on the opposite surface of the shading member is smaller than a given reference value.