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41. 发明授权

US11812201B2 Light guide optical device, light source device, and image projection apparatus 有权
公开(公告)号：US11812201B2
公开(公告)日：2023-11-07
申请号：US17724514
申请日：2022-04-20
申请人： Takashi Sasaki , Yohei Takano , Kasumi Nakamura , Kazuhiro Fujita , Makoto Hirakawa , Shigeaki Imai
发明人： Takashi Sasaki , Yohei Takano , Kasumi Nakamura , Kazuhiro Fujita , Makoto Hirakawa , Shigeaki Imai
IPC分类号： G02B27/09 , G02B27/10 , G03B21/20 , H04N9/31 , F21V8/00
CPC分类号： H04N9/317 , G02B6/0096 , G02B27/0994 , G02B27/10 , G03B21/204 , G03B21/2013 , G03B21/2066
摘要： A light guide optical device includes an optical path combiner including: a first deflector to deflect first light incident from a first direction to an emission direction; a second deflector to deflect second light incident from a second direction different from the first direction, to the emission direction; and a transmission portion between the first deflector and the second deflector, the transmission portion to transmit third light incident from a third direction different from each of the first direction and the second direction, to the emission direction. The optical path combining unit combines the first light, the second light, and the third light, and emits the combined light to the mission direction.

42. 发明授权

US11630288B2 Image projection apparatus 有权
公开(公告)号：US11630288B2
公开(公告)日：2023-04-18
申请号：US17462109
申请日：2021-08-31
申请人： Yohei Takano , Shigeaki Imai , Kazuhiro Fujita , Makoto Hirakawa
发明人： Yohei Takano , Shigeaki Imai , Kazuhiro Fujita , Makoto Hirakawa
IPC分类号： G02B13/16 , G02B5/00 , G02B7/02 , G02B26/08 , G03B21/00 , G02B13/22 , G03B21/20
摘要： An image projection apparatus includes: a light source; an image display element including multiple micromirrors arranged in two dimensions, the multiple micromirrors forming an image display plane, each micromirror having a reflecting surface; and a projection optical system. Conditional expressions (1) and (2) below are satisfied: θ1≥14(deg) (1) 1.2

43. 发明授权

US10148064B2 Semiconductor laser driving apparatus, optical scanning apparatus, object detection apparatus, and mobile apparatus 有权
公开(公告)号：US10148064B2
公开(公告)日：2018-12-04
申请号：US15058730
申请日：2016-03-02
申请人： Kohji Sakai , Masataka Uehira , Shigeaki Imai , Tadashi Nakamura
发明人： Kohji Sakai , Masataka Uehira , Shigeaki Imai , Tadashi Nakamura
IPC分类号： H01S5/042 , G01S17/10 , G01S17/42 , G01S7/484 , G01S7/497 , G02B26/12 , G01S17/02 , G01S17/93 , G01S7/481
摘要： A semiconductor laser driving apparatus for driving a semiconductor laser serving as a light source for optical scanning, the semiconductor laser driving apparatus includes: first and second switching elements that are each capable of switching energization of the semiconductor laser ON/OFF; a first pulse generation unit that intermittently outputs first driving pulses to the first switching element in a first time slot; and a second pulse generation unit that outputs a second driving pulse to the second switching element in a second time slot different from the first time slot.

44. 发明授权

US09285266B2 Object detector including a light source with light emitting region of a first size in a first direction and a second size in a second direction 有权
标题翻译：物体检测器，包括在第一方向上具有第一尺寸的发光区域和在第二方向上具有第二尺寸的光源
公开(公告)号：US09285266B2
公开(公告)日：2016-03-15
申请号：US14151989
申请日：2014-01-10
申请人： Tadashi Nakamura , Shigeaki Imai
发明人： Tadashi Nakamura , Shigeaki Imai
IPC分类号： G01J1/04 , G01J1/42 , G01S7/481 , G01S17/93
CPC分类号： G01J1/0407 , G01J1/42 , G01S7/481 , G01S7/4815 , G01S17/936
摘要： An object detector includes a light source; an optical system that converts a light beam emitted from the light source into a predetermined state; a deflector that deflects and scans the light beam passing through the optical system, and that irradiates the light beam onto an object; and a photo detector that detects reflected light or scattered light. A first size of a light emitting region of the light source is different from a second size of the light emitting region, wherein the first size is a first width of the light emitting region in a first direction, and the second size is a second width of the light emitting region in a second direction. One of the first direction and the second direction corresponding to a smaller one of the first size and the second size coincides with a direction in which angular resolution is higher.
摘要翻译：物体检测器包括光源; 将从光源发射的光束转换成预定状态的光学系统; 偏转器，其偏转和扫描通过光学系统的光束，并将光束照射到物体上; 以及检测反射光或散射光的光检测器。光源的发光区域的第一尺寸与发光区域的第二尺寸不同，其中第一尺寸是第一方向上的发光区域的第一宽度，第二尺寸是第二宽度在第二方向上的发光区域。与第一尺寸和第二尺寸中的较小尺寸相对应的第一方向和第二方向之一与角度分辨率较高的方向一致。

45. 发明授权

US09188674B2 Laser radar device 有权
标题翻译：激光雷达设备
公开(公告)号：US09188674B2
公开(公告)日：2015-11-17
申请号：US13930030
申请日：2013-06-28
申请人： Shuichi Suzuki , Mitsuru Nakajima , Kenichi Yoshimura , Shigeaki Imai , Tadashi Nakamura , Hiroyoshi Funato
发明人： Shuichi Suzuki , Mitsuru Nakajima , Kenichi Yoshimura , Shigeaki Imai , Tadashi Nakamura , Hiroyoshi Funato
IPC分类号： G01C3/08 , G01S17/02 , G01S7/481
CPC分类号： G01S17/02 , G01S7/4817
摘要： Disclosed is a laser radar device including a modulated light beam generator that emits light beams to a target, a photodetector that receives reflected light; a reflected light condenser that condenses the reflected light; a rotator that rotates around a rotation axis; and mirrors included in the rotator that scan the light beams, and guide the reflected light to the reflected light condenser, wherein an angular detection range in a vertical direction is divided into a plurality of layers, wherein mirror surfaces of the mirrors are tilted by corresponding tilt angles relative to the rotation axis, the tilt angles being different from each other, wherein the modulated light beam generator emits the light beams in the vertical direction, the light beams having different emission angles, and wherein a difference between the emission angles corresponds to the angular detection range of one layer in the vertical direction.
摘要翻译：公开了一种激光雷达装置，其包括向目标发射光束的调制光束发生器，接收反射光的光电检测器; 聚光反射光的反射光聚光器; 围绕旋转轴旋转的旋转体; 以及包括在扫描光束的旋转体中的反射镜，并将反射光引导到反射光聚光器，其中垂直方向上的角度检测范围被分成多个层，其中反射镜的镜面被相应的相对于旋转轴的倾斜角度，倾斜角度彼此不同，其中调制光束发生器沿垂直方向发射光束，光束具有不同的发射角，并且其中发射角之间的差对应于垂直方向上一层的角度检测范围。

46. 发明申请

US20140209793A1 OBJECT DETECTOR 有权
标题翻译：对象检测器
公开(公告)号：US20140209793A1
公开(公告)日：2014-07-31
申请号：US14151989
申请日：2014-01-10
申请人： Tadashi NAKAMURA , Shigeaki Imai
发明人： Tadashi NAKAMURA , Shigeaki Imai
IPC分类号： G01J1/04 , G01J1/42
CPC分类号： G01J1/0407 , G01J1/42 , G01S7/481 , G01S7/4815 , G01S17/936
摘要： An object detector includes a light source; an optical system that converts a light beam emitted from the light source into a predetermined state; a deflector that deflects and scans the light beam passing through the optical system, and that irradiates the light beam onto an object; and a photo detector that detects reflected light or scattered light. A first size of a light emitting region of the light source is different from a second size of the light emitting region, wherein the first size is a first width of the light emitting region in a first direction, and the second size is a second width of the light emitting region in a second direction. One of the first direction and the second direction corresponding to a smaller one of the first size and the second size coincides with a direction in which angular resolution is higher.
摘要翻译：物体检测器包括光源; 将从光源发射的光束转换成预定状态的光学系统; 偏转器，其偏转和扫描通过光学系统的光束，并将光束照射到物体上; 以及检测反射光或散射光的光检测器。光源的发光区域的第一尺寸与发光区域的第二尺寸不同，其中第一尺寸是第一方向上的发光区域的第一宽度，第二尺寸是第二宽度在第二方向上的发光区域。与第一尺寸和第二尺寸中的较小尺寸相对应的第一方向和第二方向之一与角度分辨率较高的方向一致。

47. 发明授权

US08619107B2 Beam-spot position compensation method, optical scanning device, and multi-color image forming device 有权
标题翻译：光束位置补偿方法，光学扫描装置和多色成像装置
公开(公告)号：US08619107B2
公开(公告)日：2013-12-31
申请号：US12608823
申请日：2009-10-29
申请人： Shigeaki Imai , Tomohiro Nakajima
发明人： Shigeaki Imai , Tomohiro Nakajima
IPC分类号： B41J2/435
CPC分类号： G02B26/123
摘要： In a beam-spot position compensation method for use in an optical scanning device which scans a surface of a photosensitive medium by a light beam emitted by a light source, a plurality of sections are defined by dividing a scanning region on the scanned surface. An emission timing of the light beam for every section is adjusted so that a spacing between beam-spot positions corresponding to pixels of start and end of each section is changed by a predetermined amount. The sparseness or denseness of beam-spot position spacings of the plurality of sections in the whole scanning region is compensated.
摘要翻译：在用于通过光源发射的光束扫描感光介质的表面的光学扫描装置中的光斑位置补偿方法中，通过划分扫描表面上的扫描区域来限定多个部分。调整每个部分的光束的发射定时，使得对应于每个部分的开始和结束的像素的光束点位置之间的间隔改变预定量。补偿了整个扫描区域中的多个部分的光束位置间隔的稀疏度或致密度。

48. 发明授权

US08587774B2 Velocity detecting device and multi-color image forming apparatus 有权
标题翻译：速度检测装置和多色成像装置
公开(公告)号：US08587774B2
公开(公告)日：2013-11-19
申请号：US12696216
申请日：2010-01-29
申请人： Hiroyoshi Funato , Shigeaki Imai , Koji Masuda , Hidemasa Suzuki
发明人： Hiroyoshi Funato , Shigeaki Imai , Koji Masuda , Hidemasa Suzuki
IPC分类号： G01C3/08
CPC分类号： G01S17/58 , G01P3/68 , G01P3/806 , G03G15/011 , G03G15/0194 , G03G2215/00645 , G03G2215/0129 , G03G2215/0141 , G03G2215/0196
摘要： A velocity detecting device includes an image-pattern acquiring unit that includes a laser light source and an area sensor that acquires a one-dimensional or a two-dimensional image. The image-pattern acquiring unit includes a lens between a moving member and the area sensor, irradiates a beam emitted from the laser light source to the moving member to make a scattering light of the moving member scattered from the moving member on the area sensor by using the lens, and acquires an image pattern at a predetermined time interval in association with movement of the moving member. A velocity calculating unit calculates the velocity of the moving member by computing the image pattern acquired by the image-pattern acquiring unit. The lens is a reduced optical system that projects a reduced object onto the area sensor.
摘要翻译：速度检测装置包括图像图案获取单元，其包括激光源和获取一维或二维图像的区域传感器。图像图案获取单元包括在移动构件和区域传感器之间的透镜，将从激光源发射的光束照射到移动构件，以使移动构件的散射光从区域传感器上的移动构件散射，使用透镜，并且以与移动构件的移动相关联的预定时间间隔获取图像图案。速度计算单元通过计算由图像模式获取单元获取的图像图案来计算移动构件的速度。透镜是将减少的物体投影到区域传感器上的缩小的光学系统。

49. 发明授权

US08072478B2 Optical scanning device, image forming apparatus, and write method 有权
标题翻译：光学扫描装置，成像装置和写入方法
公开(公告)号：US08072478B2
公开(公告)日：2011-12-06
申请号：US12207047
申请日：2008-09-09
申请人： Jun Tanabe , Shigeaki Imai , Seizo Suzuki
发明人： Jun Tanabe , Shigeaki Imai , Seizo Suzuki
IPC分类号： B41J2/47 , B41J2/455
CPC分类号： G02B26/127 , G03G15/043 , G03G2215/0158
摘要： An optical scanning device acquires a displacement amount of each of scanning light beams in the main scanning direction, and corrects, based on the displacement amount, writing energy density at a write position such that a variation in image density due to a variation of the displacement amount is reduced. The light beams are used for scanning a target surface to write image data on the target surface. The writing energy density is an amount of light per unit surface area of the target surface.
摘要翻译：光扫描装置获取扫描光束在主扫描方向上的位移量，并且基于位移量来校正写入位置处的写入能量密度，使得由于位移的变化引起的图像密度的变化金额减少。光束用于扫描目标表面以在目标表面上写入图像数据。写入能量密度是目标表面的每单位表面积的光量。

50. 发明授权

US08023166B2 Optical scanning device and image forming apparatus 有权
标题翻译：光学扫描装置和图像形成装置
公开(公告)号：US08023166B2
公开(公告)日：2011-09-20
申请号：US12028446
申请日：2008-02-08
申请人： Tadashi Nakamura , Tomohiro Nakajima , Shigeaki Imai
发明人： Tadashi Nakamura , Tomohiro Nakajima , Shigeaki Imai
IPC分类号： G02B26/08
CPC分类号： G02B26/105 , B41J2/471 , G02B3/14
摘要： An optical scanning device includes, in an effective scanning area in the target surface, a mechanism that causes a scanning speed at each scanning position with respect to a scanning speed at an approximately center in the effective scanning area to be within a range under a predetermined condition.
摘要翻译：光学扫描装置在目标表面的有效扫描区域中包括使有效扫描区域中的大致中央的扫描速度的各扫描位置的扫描速度在预定的范围内的机构，条件。

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