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    • 44. 发明授权
    • Wavefront sensor, and lens meter and active optical reflecting telescope using the same
    • 波前传感器,镜头表和有源光学反射望远镜使用相同
    • US06480267B2
    • 2002-11-12
    • US09748894
    • 2000-12-26
    • Eiichi YanagiMakoto Fujino
    • Eiichi YanagiMakoto Fujino
    • G01J100
    • G01J9/00
    • A wavefront sensor includes a plurality of lenses disposed in the same plane, and an area sensor that receives a bundle of rays of light collected through each of the lenses as a luminous point. Each of the lenses comprises a plurality of concentric areas with different focal lengths, and the area sensor is located substantially halfway between a first position in which a plane wave forms an image after passing through one of the concentric areas with a minimum focal length, and a second position in which the plane wave fronts an image after passing through another area with a medium focal length. With the wavefront sensor thus arranged, the measurement can be always achieved with high accuracy without involving noticeable blurring of luminous points on the area sensor regardless of the wavefront shape of a light beam indent to the lenses.
    • 波前传感器包括设置在同一平面中的多个透镜,以及区域传感器,其接收通过每个透镜收集的光束作为发光点。 每个透镜包括具有不同焦距的多个同心区域,并且区域传感器基本上位于第一位置之间,其中平面波在通过具有最小焦距的其中一个同心区域之后形成图像;以及 第二位置,其中平面波在通过具有中等焦距的另一区域之后面向图像。 通过如此布置的波前传感器,可以始终以高精度实现测量,而不会考虑区域传感器上的发光点的显着模糊,而与透镜的光束的波前形状无关。
    • 46. 发明授权
    • Signal formation apparatus for use in interference measurement
    • 用于干扰测量的信号形成装置
    • US6075600A
    • 2000-06-13
    • US274306
    • 1999-03-23
    • Shigenori NaganoMakoto FujinoAkira TakadaNobuo Hori
    • Shigenori NaganoMakoto FujinoAkira TakadaNobuo Hori
    • G01B9/02
    • G01D5/34715
    • Provided is a signal formation apparatus for use in an interference measurement which is capable of achieving a simplicity of optical adjustments and a subminiature of the apparatus, as well as a reduction of an influence by a wavelength variation of a laser light to the utmost. A coherent light emitted from a light source section 1 is supplied to a light emission portion 3 via a connection section 2. The light emission portion 3 comprises a straight type incidence waveguide 32, a dividing waveguide 33, emission waveguides 34 and 35, and a phase modulation section 36, which are provided on an optical substrate 31. The light emission portion 3 performs a phase modulation for one of luminous fluxes and emits irradiation luminous fluxes while keeping the other luminous flux as it is. In an irradiation optical portion 4, these irradiation luminous fluxes are collimating and deflected, and irradiated onto a measurement spot of a scale section 5. In the scale section 5, the two luminous fluxes are diffracted into approximately the same direction and incident onto a light receiving portion 6. A light receiving portion 7 convert the received luminous flux to an electrical received signal, and a displacement of the scale section 5 can be obtained by a displacement measurement section 8, based on the received signal.
    • 提供了一种用于干涉测量的信号形成装置,其能够实现装置的光学调整和超小型化的简单性,以及最大限度地减少了由激光的波长变化引起的影响。 从光源部1发出的相干光通过连接部2供给到发光部3.发光部3包括直线型入射波导32,分割波导33,发光波导34,35和 相位调制部36设置在光学基板31上。发光部3对于一个光束进行相位调制,并且在保持另一光束的同时发射照射光束。 在照射光学部分4中,这些照射光束被准直和偏转,并照射到刻度部分5的测量点上。在刻度部分5中,两个光束被衍射成大致相同的方向并入射到光 光接收部分7将接收的光通量转换成电接收信号,并且可以通过基于接收信号的位移测量部分8获得标尺部分5的位移。
    • 50. 发明授权
    • Variable optical attenuator and ranging apparatus using the same
    • 可变光衰减器及使用其的测距装置
    • US07546008B2
    • 2009-06-09
    • US11890559
    • 2007-08-07
    • Makoto FujinoHiroyuki Kawashima
    • Makoto FujinoHiroyuki Kawashima
    • G02B6/26G02B6/00G01C3/00C01C3/08
    • G02B6/266G01S7/481G01S7/4868G01S17/08
    • A variable optical attenuator for adjusting a power of light which is output from an output end of a first optical fiber and is to be led to an input end of a second optical fiber, includes a reflection member which reflects the light output from the output end of the first optical fiber, a density filter which transmits the light reflected from the reflection member and controls the power of the light which is transmitted by the density filter depending on a light-transmitting position on the density filter, and an optical member which reflects the light transmitted by the density filter to lead the light to the reflection member. The reflection member is disposed tiltably, the power of the light transmitted by the density filter attenuates along a direction in which the light-transmitting position is changed, and the light-transmitting position of the light is changed by tilting the reflection member.
    • 一种用于调节从第一光纤的输出端输出并被引导到第二光纤的输入端的光功率的可变光衰减器包括:反射部件,其反射从输出端 第一光纤的密度滤波器,透射从反射构件反射的光并根据密度滤光器上的透光位置控制由密度滤光器透射的光的功率的浓度滤光器;以及反射 由密度滤波器透射的光将光引导到反射构件。 反射构件可倾斜地设置,由密度滤波器透射的光的功率沿着透光位置改变的方向衰减,并且通过使反射构件倾斜来改变光的透光位置。