公开(公告)号：DE4311359A1

公开(公告)日：1993-10-14

申请号：DE4311359

申请日：1993-04-06

Applicant: BRIDGESTONE CORP TOKIO TOKYO

Inventor： ISHIHARADA MINORU ,  ITO RIKUHEI ,  TANUMA ITSUO ,  NAITO KAZUO ,  MATSUMURO YASUHIKO ,  AOKI TAKAO ,  KOYAMA KIYOSHI

IPC: F21V8/00 ,  G02B6/032 ,  G02B6/20 ,  G02B1/04 ,  B60Q1/00 ,  B60Q3/00

Abstract: The hose has a hollow tubular sheath (1) enclosing a fluid core (20 with a higher refractive index than that of the sheath between 2 and stoppers (3, 4) for entry and exit of the light. The fluid core (2) is filled in the sheath under pressure. Pref. one end stopper is fitted in the end of the sheath and bonded to the latter before filling with the pressurised fluid and fitting the second end stopper. The pressure of the fluid core is at length equal to the ambient pressure at the min operating temp. and remains below the pressure limit of the sheath at the max operating temp. USE/ADVANTAGE - For transmission of light e.g. between light source and front or rear of road vehicle. Prevents penetration of gas into fluid when used over long period of time, for maintaining transparency characteristic.

公开(公告)号：FR2689649A1

公开(公告)日：1993-10-08

申请号：FR9304065

申请日：1993-04-06

Applicant: BRIDGESTONE CORP

Inventor： ISHIHARADA MINORU ,  ITO RIKUHEI ,  TANUMA ITSUO ,  NAITO KAZUO ,  MATSUMURO YASUHIKO ,  AOKI TAKAO ,  KOYAMA KIYOSHI

IPC: F21V8/00 ,  G02B6/032 ,  G02B6/10 ,  B60Q3/00

Abstract: An optical waveguide hose includes a hollow tubular cladding, a fluid core in the cladding, the fluid having a higher index of refraction than the cladding, and sealing plugs mated with opposite end openings of the cladding. In one form, the core fluid is filled in the cladding under positive pressure. In another form, a sheath of a gas barrier material encloses the outer periphery of the cladding. The pressurized fluid core or the gas barrier sheath prevents air from penetrating into the core, allowing the hose to maintain its light transmission function.