Title:
WEARABLE APPARATUS
Document Type and Number:
Japanese Patent JP2019029164
Kind Code:
A
Abstract:
To provide a wearable apparatus allowing uneven brightness of a display to hardly occur.SOLUTION: A front light 316 has a first diffusion part 402 and a second diffusion part 404. The first diffusion part 402 is an annular member diffusing light from an LED 208, and an inner peripheral surface of the first diffusion part 402 has surface roughness higher than those of the other surfaces out of a plurality of surfaces of the first diffusion part 402. Since the first diffusion part 402 is annular, the light from the LED 208 travels around while reflecting in the first diffusion part 402 and is uniformized in the first diffusion part 402. Further, since the surface roughness is higher than those of the other surfaces on the inner peripheral surface of the first diffusion part 402, reflection light decreases and refracted light increases, and the refracted light is guided into the second diffusion part 404. As described above, since the light from the LED 208 is uniformized in the first diffusion part 402, and then is guided into the second diffusion part 404, it is possible to hardly cause uneven brightness of a display 228.SELECTED DRAWING: Figure 4
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Inventors:
HIRAIDE NORIAKI
Application Number:
JP2017146424A
Publication Date:
February 21, 2019
Filing Date:
July 28, 2017
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
F21S2/00; A61B5/02; F21L4/00; F21V8/00; G02F1/13357; G02F1/167; G04G21/02
Attorney, Agent or Firm:
Akira Obayashi
Seiichi Takada
Taro Takahashi
Seiichi Takada
Taro Takahashi