| 摘要 |
PURPOSE: To provide the optical communication equipment, with which data can be received with high reliability even under the condition of low light receiving power or high surrounding light, concerning the optical communication equipment due to radio between computer terminal equipment or the like. CONSTITUTION: A permeability varying device 3a7 to change permeability corresponding to light intensity and an irradiated position varying device 3a8 to make different the irradiated position of this permeability varying device 3a7 corresponding to the direction of incident light are provided in front of a light receiver 3a11 inside a receiving part 3a4, and the threshold value of light intensity to considerably change the permeability of the permeability varying device 3a7 is set at light intensity to be considerably affected by noise due to that threshold value. Thus, the permeability of the permeability varying device 3a7 is changed at positions 3a9 and 3a10 strongly irradiated with sunlight 3a5 or illumination light 3a6 being surrounding light, and the irradiation of the light receiver 3a11 with the sunlight 3a5 or illumination light 3a being the surrounding light can be suppressed. |
