-
公开(公告)号：US12013535B2
公开(公告)日：2024-06-18
申请号：US17150192
申请日：2021-01-15
发明人： Masakazu Tohara , Ryoji Kondo
CPC分类号： G02B27/0172 , G02B5/3083 , G02B13/18 , G02B25/001 , G02B27/0018 , G02B27/283 , G02B2027/012 , G02B2027/0132
摘要： The optical system introduces light from a display element displaying an image to an observer. The optical system includes in order from the display element toward the observer, a first phase plate, a semi-transmissive reflective surface, a lens, a second phase plate, and a polarization beam splitter configured to reflect a first linearly polarized light and transmit a second linearly polarized light whose polarization direction is orthogonal to that of the first linearly polarized light. The semi-transmissive reflective surface has a transmittance smaller than a reflectance thereof.
-
公开(公告)号：US09274405B2
公开(公告)日：2016-03-01
申请号：US14139082
申请日：2013-12-23
发明人： Masakazu Tohara , Takashi Urakawa
CPC分类号： G03B21/2033 , G02B27/283 , G03B21/008 , G03B21/2066 , G03B21/208 , G03B33/12 , H04N9/3152
摘要： A projector includes an area light source, a spatial light modulator, an illumination system that receives light from the area light source and illuminates the spatial light modulator, and a projection lens that forms an image by the light from the spatial light modulator. The illumination system includes an optical member having a cuboid shape and including an entrance plane and an exit plane, the optical member being arranged so that the entrance plane faces the area light source, and the optical member forming, on the exit plane, an illuminance distribution having a higher illuminance at a peripheral portion than at a central portion. The spatial light modulator is illuminated with the light from the exit plane.
摘要翻译： 投影仪包括区域光源，空间光调制器，从区域光源接收光并照亮空间光调制器的照明系统，以及通过来自空间光调制器的光形成图像的投影透镜。 照明系统包括具有长方体形状并且包括入射面和出射面的光学构件，所述光学构件布置成使得入射面面对区域光源，并且光学构件在出射面上形成照度 在周边部分具有比中央部分更高的照度的分布。 空间光调制器用来自出射平面的光照射。
-
公开(公告)号：US20140185017A1
公开(公告)日：2014-07-03
申请号：US14139057
申请日：2013-12-23
发明人： Masakazu Tohara , Takashi Urakawa
IPC分类号： G03B21/14
CPC分类号： G03B21/008 , G03B21/2033 , G03B21/208
摘要： A projector includes an area light source, a spatial light modulator, an illumination system that receives light from the area light source and illuminates the spatial light modulator, and a projection lens that forms an image by the light from the spatial light modulator. The area light source includes one of a light emitting region of a light emitting device and an image of the light emitting region, and the illumination system includes a rod integrator, the rod integrator is arranged so that an entrance plane of the rod integrator faces the area light source, and a size of the entrance plane of the rod integrator is smaller than a size of the area light source.
摘要翻译： 投影仪包括区域光源，空间光调制器，从区域光源接收光并照亮空间光调制器的照明系统，以及通过来自空间光调制器的光形成图像的投影透镜。 区域光源包括发光器件的发光区域和发光区域的图像之一，并且照明系统包括棒状积分器，杆状积分器被布置成使得杆状积分器的入射面朝向 区域光源，并且棒状积分器的入射面的尺寸小于面积光源的尺寸。
-
4.发明申请THREE DIMENSIONAL SHAPE MEASUREMENT APPARATUS, CONTROL METHOD THEREFOR, AND STORAGE MEDIUM 有权三维形状测量装置，其控制方法和存储介质公开(公告)号：US20130093854A1
公开(公告)日：2013-04-18
申请号：US13632444
申请日：2012-10-01
发明人： Masakazu Tohara
IPC分类号： H04N13/02
CPC分类号： G01B11/2513 , G01B11/25 , G01B11/2545 , G06K9/00 , G06T7/13 , H04N7/181 , H04N13/20
摘要： A three dimensional shape measurement apparatus comprising: a projection unit configured to perform a projection operation to a measurement area; a photographing unit configured to photograph a target object in the measurement area undergoing the projection operation; and a measurement unit configured to measure a three dimensional shape of the target object based on the photographed image, wherein the measurement area includes a measurement reference surface serving as a reference for a focus position of a photographing optical system of the photographing unit, and is defined based on a projection range of the projection unit and a photographing range of the photographing unit, and the focus position is set deeper than a position of the measurement reference surface when observed from the photographing unit.
摘要翻译： 一种三维形状测量装置，包括：投影单元，被配置为对测量区域进行投影操作; 拍摄单元，被配置为拍摄经过投影操作的测量区域中的目标物体; 以及测量单元，被配置为基于所拍摄的图像来测量所述目标对象的三维形状，其中所述测量区域包括作为所述拍摄单元的拍摄光学系统的焦点位置的基准的测量参考表面，并且是 基于投影单元的投影范围和拍摄单元的拍摄范围来定义，并且当从拍摄单元观察时，将焦点位置设置得比测量基准表面的位置更深。
-
公开(公告)号：US11977222B2
公开(公告)日：2024-05-07
申请号：US17986055
申请日：2022-11-14
发明人： Masakazu Tohara , Norifumi Kajimoto , Ryoji Kondo
CPC分类号： G02B27/0025 , G02B25/001 , G02B27/283 , G06F1/163 , G02B5/3083
摘要： An image display apparatus includes an image display element, and an eyepiece optical system configured to guide light from the image display element to an exit pupil. The eyepiece optical system includes at least one correction element having different characteristics between a central area and a peripheral area different from the central area. When first light is light emitted from a central portion of the image display element, and second light is light emitted from an outermost peripheral portion of the image display element, the characteristics of the at least one correction element are set such that color drift of the second light after pass through the peripheral area from the first light after pass through the central area is less than color drift of the second light before pass through the peripheral area from the first light before pass through the central area.
-
公开(公告)号：US11347048B2
公开(公告)日：2022-05-31
申请号：US16690953
申请日：2019-11-21
发明人： Masakazu Tohara , Ryoji Kondo
摘要： provided is an image display device that can reduce deterioration in image quality in a peripheral portion of an eyepiece optical system, includes an eyepiece optical system having a polarization element and guiding light from an image display element toward eyeballs of an observer, in which the eyepiece optical system includes a first lens for determining an emission angle from the image display element, and a surface of the first lens on the image display element side has an aspherical shape having a convex shape in a region including an optical axis of the first lens, wherein the aspherical shape has an inflection point within an optically effective region in a cross section including the optical axis, and wherein an eye relief E of the eyepiece optical system satisfies 15 mm≤E≤25 mm.
-
公开(公告)号：US20210239985A1
公开(公告)日：2021-08-05
申请号：US17150236
申请日：2021-01-15
发明人： Masakazu Tohara
摘要： The image display apparatus includes an optical system configured to introduce light from a display surface of a display element to an observer. The optical system includes in order from the display element toward the observer, a first phase plate, a semi-transmissive reflective surface, a lens, a second phase plate, and a polarization beam splitter. The display element is configured to make, at a central portion of the display surface, luminance in a normal direction in which a normal to the display surface extends higher than that in a specific direction tilted outward with respect to the normal direction, and to make, at a most edge portion of the display surface, the luminance in the normal direction lower than that in the specific direction.
-
8.发明申请公开(公告)号：US20200158953A1
公开(公告)日：2020-05-21
申请号：US16678279
申请日：2019-11-08
发明人： Masakazu Tohara , Marina Kitakami
摘要： To provide an image display device that is advantageous in terms of a reduction in deterioration in image quality due to birefringence in an optical element of an ocular optical system in which polarized light is used, the image display device includes an ocular optical system including a polarization element and configured to guide light from an image display element toward an eyeball of an observer. The ocular optical system includes at least one optical element that has a forming gate mark in a part of an outer periphery. The forming gate mark is disposed in a direction of an apex of an image display region of the image display element with respect to a point on an optical axis of the ocular optical system in a cross section perpendicular to the optical axis of the ocular optical system.
-
公开(公告)号：US20150124055A1
公开(公告)日：2015-05-07
申请号：US14531829
申请日：2014-11-03
CPC分类号： H04N13/246 , G01B5/0014 , G01B11/2513 , H04N13/254
摘要： To perform a high-accuracy three-dimensional measurement by performing an appropriate calibration in accordance with various temperature changes, an information processing apparatus that decides a temperature-dependent parameter of a projection apparatus configured to project a pattern onto a measurement target object to perform a three-dimensional measurement includes a holding unit configured to hold a relationship in which the temperature-dependent parameter of the projection apparatus is set as a temperature function, a temperature input unit configured to input a temperature of the projection apparatus, and a temperature-dependent parameter decision unit configured to decide the temperature-dependent parameter of the projection apparatus based on the temperature of the projection apparatus which is input by the temperature input unit and the relationship.
摘要翻译： 为了通过根据各种温度变化执行适当的校准来执行高精度的三维测量，一种信息处理设备，其确定被配置为将图案投影到测量目标对象上的投影设备的与温度有关的参数，以执行 三维测量包括：保持单元，被配置为保持将投影设备的温度相关参数设置为温度函数的关系;温度输入单元，被配置为输入投影设备的温度和温度依赖性 参数决定单元，被配置为基于由温度输入单元输入的投影设备的温度和关系来决定投影设备的温度相关参数。
-
公开(公告)号：US11536968B2
公开(公告)日：2022-12-27
申请号：US17150236
申请日：2021-01-15
发明人： Masakazu Tohara
摘要： The image display apparatus includes an optical system configured to introduce light from a display surface of a display element to an observer. The optical system includes in order from the display element toward the observer, a first phase plate, a semi-transmissive reflective surface, a lens, a second phase plate, and a polarization beam splitter. The display element is configured to make, at a central portion of the display surface, luminance in a normal direction in which a normal to the display surface extends higher than that in a specific direction tilted outward with respect to the normal direction, and to make, at a most edge portion of the display surface, the luminance in the normal direction lower than that in the specific direction.
-
-
-
-
-
-
-
-
-
搜索结果
32 条记录 (耗时 0.02 秒)
