公开(公告)号：JPS6295429A

公开(公告)日：1987-05-01

申请号：JP23612285

申请日：1985-10-21

Applicant: SHIMADZU CORP

Inventor： ISHIKAWA KUNIO ,  HASHIZUME SHOJIRO ,  SHIMOMURA TEIICHI

IPC: G01J3/02 ,  G01J3/18

Abstract: PURPOSE:To improve an SN ratio and to eliminate the influence of a dark current generated in a photodetector and a temperature drift generated by an amplifier by switching optical paths by using a chopper composed of a total reflecting mirror. CONSTITUTION:The chopper 14 arranged on the projection optical path C from the exit slit 12 of a spectroscope 2 is constituted by arranging a semicircular total reflecting mirror at 45 deg. to the light projection optical path C. Then, this chopper 14 is rotated at a high speed to switch the optical path to passing light and reflected light alternately while the projection light from the spectrometer 2 is chopped. Consequently, the spectra of two degrees of primary diffracted light and secondary diffracted light within a diffracted light wavelength range are measured at the same time by making a wavelength scan once.

公开(公告)号：JPS6275606A

公开(公告)日：1987-04-07

申请号：JP21848785

申请日：1985-09-30

Applicant: SHIMADZU CORP

Inventor： HASHIZUME SHOJIRO

IPC: G02B6/293 ,  G02B6/28

Abstract: PURPOSE:To extend the wavelength selectable range of an optical signal transmitted in the wavelength division multiplexing state by reflecting or transmitting the light by a short pass filter if the wavelength is shorter than a certain value and transmitting or reflecting the light by a long pass filter if the wavelength is longer than the certain value. CONSTITUTION:Both side walls of an enveloping case 12 constituting an optical multiplexer/demultiplexer 1 are pierced by optical fibers 8a and 8c, and a light source 16 and a photodetector 20 are brought into contact with the outside end of the fiber 8c. The ceiling of the case 12 is pierced by an optical fiber 8b, and a light source 14 and a photodetector 18 are brought into contact with the outside end of the fiber 8b, and lenses 10a and 10c and an interference film filter 2 placed between these lenses which makes rays parallel are inserted between fibers 8a and 8c. A short pass filter 4 and a lens 10b are interposed between the filter 2 and the fiber 8b, and the rays of light different in wavelength are made incident from light sources 14 and 16 if the multiplexer/ demultiplexer 1 is used as an optical multiplexer, and the rays of light are allowed to pass filters 4 and 6 and are detected by photodetectors 18 and 20 if the multiplexer/demultiplexer 1 is used as an optical demultiplexer.

公开(公告)号：JPS6132007A

公开(公告)日：1986-02-14

申请号：JP15267284

申请日：1984-07-23

Applicant: Shimadzu Corp

Inventor： HASHIZUME SHOJIRO

IPC: G02B6/293 ,  G02B6/28 ,  G02B6/34

CPC classification number: G02B6/29307 ,  G02B6/2931 ,  G02B6/2938

Abstract: PURPOSE:To permit the easy operation for finishing the end face of multiwavelength photometric fibers and to decrease aberration and optical loss by disposing the optical fibers in such a position where the end faces thereof are made flush with the spectral image plane of a spectroscope and are perpendicular and parallel to and with the same plane. CONSTITUTION:One end of a transparent dielectric block 1 is made of a concave reflection mirror 2 and the middle stage part 3 of the end face opposite thereto is made of a plane diffraction grating 4 inclined with the normal of the mirror 2. The upper and lower parts 5 thereof are formed to the plane perpendicular to the normal of the reflection mirror. The end faces of blocks 6, 7 holding the optical fibers F6, F7 are adhered perpendicularly to the end face 5. Light of several kinds of wavelengths is passed through the fiber F6 and is made incident on the inside of the block 1. The fibers 7 take out the light of the respective wavelengths. The light traces the opposite route thereof as the multiplexer. Since the optical fibers corresponding to the plural wavelengths are made approximately parallel on one plane, the finishing of the fiber end faces is easy and the multiplexer and demultiplexer having the decreased aberration and optical loss is obtd.

Abstract translation: 目的：为了使多波长光度测量光纤的端面完成的容易操作，并且通过将光纤布置在其端面与分光器的光谱图像平面齐平的位置处而减小像差和光损耗，并且是 垂直并平行于同一平面。 构成：透明介质块1的一端由凹面反射镜2构成，与其相反的端面的中间台部3由与镜2的法线倾斜的平面衍射光栅4构成。 其下部5形成在与反射镜的法线垂直的平面上。 保持光纤F6，F7的块6,7的端面垂直于端面5粘合。几种波长的光通过光纤F6并入射到块1的内部。纤维 7取出各波长的光。 光作为多路复用器跟踪其相反的路线。 由于对应于多个波长的光纤在一个平面上大致平行，所以光纤端面的精加工容易，并且具有减小的像差和光损耗的多路复用器和解复用器被实现。