Spectroscopic measurement system using rotating patterned grill members
阅读：836发布：2023-05-14
专利汇可以提供Spectroscopic measurement system using rotating patterned grill members专利检索，专利查询，专利分析的服务。并且A novel system for spectroscopic measurement adaptable in spectrum analysis utilizing a plurality of moire patterns. In order to improve the resolving power of the spectroscopic instrument without any reduction in the intensity of radiant energy to be measured, a pair of grills each having a plurality of narrow slits are disposed at the entrance side and the exit side with respect to a light source. The spectroscopic measurement is performed by discriminating a moire pattern formed by a radiant beam of specific wave length, which is static with respect to the movement of the exit grill, from other moire patterns formed by radiant beams which are dynamic with respect to the movement of the exit grill. In addition, to facilitate the electrical measurement of the intensity of radiant energy, means for giving a pulsating characteristic to a beam of light to be sensed by a photomultiplier tube is provided.，下面是Spectroscopic measurement system using rotating patterned grill members专利的具体信息内容。
1. A system for spectroscopic measurement comprising a light source, a first patterned grill member disposed at an entrance side in alignment with said light source, the beam of light which passes from said light source through said first patterned grill member carrying an image of said first grill member, diffraction means operatively associated with said first grill member for dispersing the beam of light passing through said first patterNed grill member into a plurality of radiant beams each according to its wave length, a second patterned grill member disposed at an exit side for receiving a plurality of images of said first patterned grill member, which have been projected by the radiant beams dispersed by said diffraction means and for producing a plurality of superimposed striped patterns, means for synchronously rotating the first and second patterned grill members in a prescribed manner whereby the striped patterns formed by radiant beams except for a striped pattern formed by a radiant beam of a specific wave length to be measured which is in a static condition, can be varied and are in a dynamic condition and means for discriminating the static striped pattern formed by the radiant beam of specific wave length from the dynamic striped patterns formed by other radiant beams.
2. A system according to claim 1, wherein said first patterned grill member is of the same construction as that of said second patterned grill member and both are formed with a plurality of linearly equally juxtaposed slits.
3. A system according to claim 1, wherein said means for rotating the first and second patterned grill members rotates said members about an optical axis at the same speed and in the same direction.
4. A system according to claim 1, wherein said means for rotating the both first and second patterned grill members is an electrically operated motor device.
5. A system according to claim 1, wherein said discriminating means comprises a fixed mask having a plurality of linearly equally juxtaposed slits arranged such that each slit is in register with a corresponding opaque portion of the static striped pattern and an optical device, said mask and said optical device rotating in synchronism with the rotation of said second patterned grill member, and said optical device shifting all of the striped patterns formed on the second patterned grill member; said patterns having a moire appearance.
6. A system according to claim 5, wherein said optical device comprises a combination of an achromatic prism and a collimating lens whereby, when said prism is brought into register with the second patterned grill member, all of the radiant beams entering therethrough can be deflected so that each striped pattern can be shifted half a pitch and, when said lens is brought into register with the second patterned member, a radiant beam of specific wave length can be entirely shielded to permit the intensity of radiant energy screened through the striped patterns formed by the other radiant beams to be measured.
7. A system according to claim 5, wherein said optical device comprises a reflector device provided with a pair of reflector planes arranged in the displaced condition with respect to a common supporter shaft for supporting said reflector device.
8. A system according to claim 1, wherein either of said first and second patterned grill members is adjustable about an optical axis whereby each pitch defined between one strip to another of the striped pattern can be changed as desired.
9. A system according to claim 1, wherein each of said first and second patterned grill members is made of a resin film.
10. A system according to claim 1, wherein each of said first and second patterned grill members is made of metal.
11. A system according to claim 1, wherein said discriminating means comprises a movable mask formed with a plurality of linearly equally juxtaposed slits and adapted to be moved in a distance of the value substantially equal to a multiple of integer of half a pitch between one strip to another of the striped pattern formed by a radiant beam of specific wave length.
12. A system according to claim 11, wherein said movable mask is adapted to be moved in the direction at right angles to the lengthwise direction of each strip of the striped pattern formed by a radiant beam of specific wave length.
13. A system according to claim 11, wherein said movable mask is in the form of a cam plate.
14. A system according to claim 11, wherein said movable mask is adapted to be rotated in synchronism with the rotation of each of the first and second patterned grill members.
15. A system for spectroscopic measurement comprising a light source, a first patterned grill member disposed at an entrance side in alignment with said light source, the beam of light which passes through said first patterned grill member carrying an image of said first grill member, diffraction means operatively associated with said first grill member for dispersing the beam of light passing through said first patterned grill member into a plurality of radiant beams each according to its wave length, a second patterned grill member disposed at an exit side for receiving a plurality of images of said first patterned grill member, which have been projected by the radiant beams dispersed by said diffraction means and for producing a plurality of superimposed striped patterns, means for synchronously rotating the first and second patterned grill members in a prescribed manner whereby the striped patterns formed by radiant beams, except for a striped pattern formed by a radiant beam of a specific wave length to be measured which is in a static condition, can be varied and are in a dynamic condition, means for discriminating the static striped pattern formed by the radiant beam of specific wave length from the dynamic striped patterns formed by other radiant beams, and means for giving a pulsating characteristic to a beam of light screened through the striped patterns.
16. A system for spectroscopic measurement comprising a concave mirror, a patterned grill member operatively associated with said concave mirror and formed with a plurality of slits and disposed at the focus point of said concave mirror, a pair of reflector elements symmetrically disposed with respect to an optical axis passing through the center of curvature of said concave mirror, diffraction means for dispersing a beam of light passing from a light source through said first patterned grill member into a plurality of radiant beams each according to its wave length, said beam of light carrying an image of said patterned grill member after passage therethrough all of these optical elements being arranged such that a plurality of images of said patterned grill member can be formed on said patterned grill member to produce thereon striped patterns by means of radiant beams of different wave lengths dispersed by said diffraction means, and means for rotating said patterned member about the optical axis whereby, so long as said patterned member is rotated, one of the striped patterns which is formed by a radiant beam of specific wave length can be maintained in the static relation with respect to the patterned member while the remaining striped patterns which are formed by radiant beams of other wave lengths can be maintained in the dynamic relation to the patterned member.
17. A system according to claim 16, wherein said pair of the reflector elements disposed in the offset relation with respect to the optical axis.
18. A system according to claim 16, wherein said dispersing means is situated at one of the conjugate points of either of said reflector elements.
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