• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The depolariser depolarises monochromatic or polychromatic polarised light and comprises a plurality of differently oriented anisotropic particles (3) embedded in an optically transparent medium (5), the orientation of the oscillation directions (4) of said particles being distributed over an azimuth of 180 DEG . <IMAGE>
    公开号:SU1083146A1
    申请号:SU807771390
    申请日:1980-09-22
    公开日:1984-03-30
    发明作者:Бергиер Йоахим
    申请人:Феб Карл-Цейсс-Йена (Инопредприятие)；
    IPC主号:
    专利说明:

    2. A depolarizer according to claim 1, characterized in that each of the anisotropic corpuscles is made in the form of a half-wave plate.
    3. A depolarizer according to claim 1, characterized in that the anisotropic corpuscles are made in the form of crystal grains and are placed
    into an optically active immersion medium.
    4. A separator according to Claim 3, characterized in that the refractive index of the optically active immersion medium is equal to the average refractive index of anisotronic corpuscles.
    5. A depolarizer according to claim 3, characterized in that the dispersions of the average refractive index of anisotropic corpuscles and the immersion medium, characterized by the Abbe number, are equal to or are within the tolerance floor of ± 10.
    6. The depolarizer of claim 5, which is distinguished by the fact that the anisotropic corpuscles are embedded in an optical glass case.
    7. A depolarizer according to Claim 2, characterized in that the anisotropic corpuscles are in the form of inorganic or organic crystals with a spherolite structure.
    8. Depolarizer on PP. 1 and 7, characterized in that the anisotropic corpuscles are made
    in the form of structural elements of a spherulitic single crystal.
    one
    The invention relates to optical elements.
    The achromatic depolarizer can be used in polarization microscopes, photometers and other optical devices and serves to convert light, partially polarized by an applied light source and built-in light-splitting or deflecting systems, into natural light without the preferred direction of the plane of polarization of light and without The periodicity of the process of polarization. Due to this, using such devices, it is possible to study and quantify the parameters of absorption or reflection of light on optically anisotropic substances.
    Significant depolarization of the light used to illuminate the substances investigated in optical devices is required especially in those cases when the characteristics of these substances are determined by measuring their absorption or reflectance. For anisotropic substances, these indicators depend on the direction of the incident light and additionally change with the type of its polarization. To measure linear or circular dichroism, as well as double reflection on stationary objects, it is necessary to eliminate the polarization state of the light caused by the device used, since otherwise
     In the case of measurements, systematic faults occur.
    The degree of polarization of the device should be close to zero. ; In known devices, this is achieved, for example, by the fact that a quarter-wave plate is inserted in front of the object under investigation, the main directions of which are with the polarization plane of the depolarizable radiation angle (Kaliteevsky N.I.
    Volnov optics. M., Science, 1971, p. 98-99). As a result of the action of this plate, the radiation becomes circularly polarized, and the degree
    20 the polarization of such radiation is zero. .
    The main disadvantage of this device is that it can only work with monochromatic light.
    In another known device, a combination of prisms from right handed and left handed quartz is used, 30 of which are introduced into the course of the rays of the optical device so that the optical axis of the device coincides with the optical axes of the crystals of quartz prisms. In addition to the aforementioned disadvantage which lies in the possibility of working only with monochromatic light, this device is suitable for relatively narrow beams of parallel light rays (Kaliteevsky; N.I., Volno-optics. M., Nauka, 1971, p. 118) . The purpose of the invention is to ensure the possibility of depolarization of both monochromatic and polychromatic radiation by increasing the number of apertures of depolarized beams and simplifying the design of the device. The goal is achieved by using a depolarizer, the state of polarization of a drop on it is linear or elliptical. The resulting light beam is changed so that the direction of the polarization plane, which is originally equally oriented along the cross section of the light beam, is transformed into a finite set of different directions of the planes of polarization, and these directions are mainly statically uniformly distributed in azimuth 180. For this, the said optical element includes The corpuscles are matched in size and number with the aperture of a beam of light and are designed to split the incoming beam of light into two components with a path difference, preferably half the wavelength, and the main directions of the polarization planes of these the components were evenly distributed around the entire angle 180. The corpuscles are immersed in the medium, the refractive index of which corresponds to the average decay factor of the anisotropic medium used, due to which the effects of no. Achromatization of the depolarizer is achieved by the fact that the dispersions of the average refractive index of anisotropic corpuscles and the immersion medium characterized by the Abbe number are equal to each other or are within the tolerance field +10, 64 When this optical element is located in the entrance pupil of a polarization microscope, each point in the field of an object of this polarization microscope, it is illuminated by light waves with different directions of oscillations corresponding to the generally typical state of polarization of the natural veta. In the respective embodiments of the aromatic depolarizer acting according to the above principle, crystal grains placed in a pre-oriented position between transparent substrates in a liquid or in a hardening putty or pressed into a transparent substance deformed under pressure are used as anisotropic corpuscles. are filled in in the case from glass. In another embodiment, aniso. the triple corpuscles are formed by a rostral aggregate with a spherolitic structure, and the spherulites can consist of both inorganic crystals and organic high polymers ... Another uniformity of this design is a spherulitic single crystal, the size of which allows covering the surface of transparent substrates with them. FIG. 1 shows a depolarizer with crystal grains in the form of anisotropic corpuscles in FIG. 2 element with a crystalline aggregate with a spherulitic structure. In this case, in the first embodiment, crystal grains 3 located between glass plates 1 and 2, whose optical axes 4 are oriented in the depolarizer plane within O-180 angles, are immersed in an optically isotropic immersion medium 5. In the second version between The glass plates 6 and 7 comprise a layer 8 consisting of corpuscles 9 with a spherulitic structure, the structural elements 10 of which are arranged radially. It is recognized as an invention according to the results of the examination carried out by the Office for the Invention of the German Democratic Republic.
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    权利要求:
    Claims (8)
    [1]
    1. DEPOLARIZER of monochromatic or polychromatic light radiation, characterized in that it is made in the form of many differently oriented anisotropic corpuscles, the oscillation directions of which are uniformly distributed in azimuth of 180 °.
    [2]
    2. Depolarizer according to π. 1, characterized in that each of the anisotropic corpuscles is made in the form of a half-wave plate.
    [3]
    3. The depolarizer according to π. 1, characterized in that the anisotropic corpuscles are made in the form of crystalline grains and placed in an optically active immersion medium.
    [4]
    4. The depolarizer according to claim 3, characterized in that the refractive index of the optically active immersion medium is equal to the average refractive index of anisotropic corpuscles.
    [5]
    5. The depolarizer according to claim 3, characterized in that the dispersions of the average refractive index of anisotropic corpuscles and immersion medium, characterized by the Abbe number, are equal to or within the tolerance field of +10.
    [6]
    6. The depolarizer according to claim 5, characterized in that the anisotropic protection particles are in an optical glass housing.
    [7]
    7. The depolarizer according to claim 2, characterized in that the anisotropic corpuscles are made in the form of inorganic or organic crystals with a spherulite structure.
    [8]
    8. The depolarizer according to paragraphs. 1 and 7, characterized in that the anisotropic corpuscles are made in the form of structural elements of a spherulite single crystal.
    "
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    同族专利:
    公开号 | 公开日
    DD146347A1|1981-02-04|
    DE3035025A1|1981-04-09|
    GB2088078A|1982-06-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE3515020C2|1984-04-28|1990-12-13|Kabushiki Kaisha Toshiba, Kawasaki, Kanagawa, Jp|
    DE3566303D1|1985-07-10|1988-12-22|Hewlett Packard Gmbh|Light coupling device for the optical reflectometry|
    JP2572537B2|1993-02-10|1997-01-16|スタンレー電気株式会社|Liquid crystal display device and manufacturing method thereof|
    DE10124803A1|2001-05-22|2002-11-28|Zeiss Carl|Polarizer and microlithography projection system with polarizer|
    US7053988B2|2001-05-22|2006-05-30|Carl Zeiss Smt Ag.|Optically polarizing retardation arrangement, and microlithography projection exposure machine|
    GB2384865A|2002-02-02|2003-08-06|Holographic Imaging Llc|Depolariser with random orientated regions of polarisation state modulating material|
    DE102007007907A1|2007-02-14|2008-08-21|Carl Zeiss Smt Ag|Method for producing a diffractive optical element, diffractive optical element produced by such a method, illumination optics having such a diffractive optical element, microlithography projection exposure apparatus with such illumination optics, method for producing a microelectronic component using such a projection exposure apparatus, and method produced by such a method module|
    TWI386722B|2008-10-24|2013-02-21|Taiwan Tft Lcd Ass|Optical sheet, display apparatus and fabricating method thereof|
    GB2527783A|2014-07-01|2016-01-06|Univ Leiden|A broadband linear polarization scrambler|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DD21581179A|DD146347A1|1979-09-26|1979-09-26|depolarizer|
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