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153 条记录 (耗时 0.017 秒)

    Optical multilayer thin film and beam splitter
    81.
    发明授权
    Optical multilayer thin film and beam splitter 失效
    光学多层薄膜和分束器

    公开(公告)号：US5400179A

    公开(公告)日：1995-03-21

    申请号：US18383

    申请日：1993-02-17

    申请人： Taku Ito

    发明人： Taku Ito

    IPC分类号： G02B1/10 ,  G02B27/14 ,  G02B27/28 ,  G02B5/20

    CPC分类号： G02B5/0825 ,  G02B27/1073 ,  G02B27/142 ,  G02B27/283 ,  G02B5/26 ,  G02B5/3041

    摘要： An optical multilayer thin film and a beam splitter having an optical multilayer thin film are disclosed. The optical multilayer thin film is formed by laminating six layers in sequence. The laminated six layers comprise: a first layer, a third layer and a fifth layer each having a refractive index between 1.63 and 1.64; a second layer and a sixth layer each having a refractive index between 1.37 and 1.38, a fourth layer having a refractive index between 1.9 and 2.3; in which light is allowed to be incident upon the first layer of the optical multilayer thin film at the angle of incidence equal to or greater than 40.degree.. In the beam splitter, the reflectances of S and P polarized components of reflected light are substantially equal to each other over a wide wavelength range and substantially no phase difference exists between the S and P polarized components. Further a beam splitter having a multilayer polarizing light separating film formed between an incoming side prism and an outgoing side prism is also disclosed, which is extremely high in the reflectance of the P polarized component of reflected light, in comparison with that of the S polarized component of the same reflected light.

    摘要翻译： 公开了具有光学多层薄膜的光学多层薄膜和分束器。 光学多层薄膜依次层叠6层。 层压六层包括：折射率在1.63和1.64之间的第一层，第三层和第五层; 折射率在1.37和1.38之间的第二层和第六层，第四层的折射率在1.9和2.3之间; 其中允许光以入射角等于或大于40°入射到光学多层薄膜的第一层上。 在分光器中，反射光的S偏振分量和P偏振分量的反射率在宽波长范围内基本上彼此相等，并且在S和P偏振分量之间基本上不存在相位差。 此外，还公开了一种在入射侧棱镜和出射侧棱镜之间形成的多层偏振光分离膜的分束器，其与反射光的P偏振分量的反射率相比非常高，与S偏振 相同反射光的分量。

    Multi-layered mirror
    82.
    发明授权
    Multi-layered mirror 失效
    多层镜

    公开(公告)号：US4921331A

    公开(公告)日：1990-05-01

    申请号：US138108

    申请日：1987-12-28

    申请人： Yuji Nakajima

    发明人： Yuji Nakajima

    IPC分类号： A47G1/02 ,  B60R1/08 ,  C03C17/34 ,  G02B5/08 ,  G02B5/28

    CPC分类号： G02B5/0825 ,  A47G1/02 ,  B60R1/083 ,  C03C17/3417 ,  G02B5/0833 ,  G02B5/26

    摘要： An improved mirror of a type especially advantageous for use as a rearview mirror for automotive applications. The inventive mirror employs a dielectric multi-layered coating formed on the front side of a glass or plastic transparent substract, the back side of which is provided with a light-absorbing layer. The dielectric coating is composed of three to six dielectric layers laminated one on top of another and having alternately differing refractive indices. At least one of the laminated dielectric layers has an optical thickness of .lambda..sub.0 /2, where .lambda..sub.0 is a wavelength of light used as a reference for design purposes and which is in a range of 500 to 580 nm for an incident angle of 0.degree., with each of the remaining dielectric layers having a thickness of .lambda..sub.0 /4.

    摘要翻译： 一种改进的镜子，特别有利于用作汽车应用的后视镜。 本发明的反射镜使用形成在玻璃或塑料透明基底的前侧上的介电多层涂层，其背面设置有光吸收层。 电介质涂层由三层至六层电介质层组成，一层叠置在另一层之上，具有交替不同的折射率。 层压电介质层中的至少一个具有λ0/2的光学厚度，其中λ0是用作设计目的的参考的光的波长，并且对于入射角为0的范围在500至580nm的范围内 DEG，其中每个剩余的电介质层的厚度为λ0/4。

    Semi-transparent reflectors
    87.
    发明授权
    Semi-transparent reflectors 有权

    公开(公告)号：US10067265B2

    公开(公告)日：2018-09-04

    申请号：US12902763

    申请日：2010-10-12

    申请人： Benjamin Alan Grayson ,  Debasish Banerjee ,  Masahiko Ishii

    发明人： Benjamin Alan Grayson ,  Debasish Banerjee ,  Masahiko Ishii

    IPC分类号： G02B5/10 ,  G02B1/00 ,  G02B5/08 ,  G02B1/10

    CPC分类号： G02B1/005 ,  G02B1/10 ,  G02B5/0825 ,  G02B5/0833

    摘要： In one embodiment, a semi-transparent reflector may include a multilayered photonic structure. The multilayered photonic structure includes a plurality of coating layers of high index dielectric material and a plurality of coating layers of low index dielectric material. The plurality of coating layers of high index dielectric material and the plurality of coating layers of low index dielectric material of the multilayered photonic structure are arranged in an [LH . . . (LH)N . . . L] structure. L is one of the plurality of coating layers of low index dielectric material. H is one of the plurality of coating layers of high index dielectric material. N is a positive integer. The multilayered photonic structure has substantially constant reflectance values for wavelengths of electromagnetic radiation in a visible spectrum over a range of angles of incidence of the electromagnetic radiation.

    MACHINING HEAD FOR LASER MACHINING MACHINE, AND LASER MACHINING MACHINE
    90.
    发明申请
    MACHINING HEAD FOR LASER MACHINING MACHINE, AND LASER MACHINING MACHINE 审中-公开

    公开(公告)号：US20170304939A1

    公开(公告)日：2017-10-26

    申请号：US15520115

    申请日：2015-10-20

    申请人： Bystronic Laser AG

    发明人： Thomas RATAJ

    IPC分类号： B23K26/06 ,  G02B5/08 ,  B23K26/04 ,  B23K26/14 ,  B23K26/38

    CPC分类号： B23K26/06 ,  B23K26/048 ,  B23K26/0643 ,  B23K26/1462 ,  B23K26/38 ,  G02B5/08 ,  G02B5/0825

    摘要： The invention relates to a machining head (1) for laser machining machines, in particular for laser cutting machines, having an interface to a laser light source (3), preferably to fiber-coupled or fiber-based laser sources. Said laser sources are designed for more than 500 W of average output power in the near infrared region. The interface is preferably designed for coupling an optical waveguide (2) for the working laser beam (6). The machining head (1) also has a focusing optical unit (11) having preferably only one imaging lens. A deflecting assembly (9, 10) for at least one single deflection of the working laser beam (6) is arranged between the interface and the focusing optical unit (11). Said deflecting assembly (9, 10) is designed as a passive optical element that changes the divergence of the working laser beam (6) in dependence on power.