Title:
TRANSMISSION RECEPTION OPTICAL EQUIPMENT
Document Type and Number:
Japanese Patent JP3022425
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide reduced cost, optical transmission reception equipment with a simple configuration for a master station in an optical radio communication system where a single transmission reception section emits and receives a plane optical beam over 360 degrees.
SOLUTION: This optical equipment is provided with a transmission reception section 101 that consists of an optical transmitter 104 sending a substantially collimated light beam and of an optical receiver 105 that is placed coaxially with the optical transmitter 104, and with a reflecting cone section 102 that is placed on an extended line of a center axis of the transmission reception section 101 and whose outer circumferential face is formed with a reflecting face, and the center axis (a) of the cone section 102 is in matching with the center axis of the transmission reception section 101 and an angle θ between a generating line (b) of the cone section 102 and the center axis (a) is substantially 45 degrees. The generating line (b) of the cone section 102 may be a straight line or a curved line.
Inventors:
Yojio Hatsuda
Application Number:
JP21507197A
Publication Date:
March 21, 2000
Filing Date:
August 08, 1997
Export Citation:
Assignee:
NEC
International Classes:
H04B10/11; H04B10/114; (IPC1-7): H04B10/105; H04B10/10; H04B10/22
Domestic Patent References:
| JP9230281A | ||||
| JP7283790A | ||||
| JP5347591A | ||||
| JP5252115A | ||||
| JP62210743A | ||||
| JP1098434A | ||||
| JP658636U |
Attorney, Agent or Firm:
Tadashi Wakabayashi (4 others)
Previous Patent: 自転車の走行にかかる重力を軽減するクランク
Next Patent: CLOCK SIGNAL FEEDING INTEGRATED CIRCUIT AND CONSTITUTING METHOD THEREOF
Next Patent: CLOCK SIGNAL FEEDING INTEGRATED CIRCUIT AND CONSTITUTING METHOD THEREOF