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1. 发明申请

WO2009041249A1 PROJECTION OPTICAL APPARATUS 审中-公开
标题翻译：投影光学装置
公开(公告)号：WO2009041249A1
公开(公告)日：2009-04-02
申请号：PCT/JP2008/066145
申请日：2008-09-02
申请人： RICOH COMPANY, LTD. , TAKAURA, Atsushi , FUJITA, Kazuhiro , ABE, Issei , YAMAKAGE, Akihiro , NAGASE, Osamu , KOHNO, Yoshitsugu
发明人： TAKAURA, Atsushi , FUJITA, Kazuhiro , ABE, Issei , YAMAKAGE, Akihiro , NAGASE, Osamu , KOHNO, Yoshitsugu
IPC分类号： G03B21/14 , G02B17/08 , G03B21/28
CPC分类号： G03B21/28 , G02B17/08 , G02B17/0896 , G02B26/0833 , G02B27/283 , G03B21/14
摘要： A projection optical apparatus capable of providing high image quality and having a reduced size. The projection optical apparatus comprises a light valve and a projection optical system including a first optical system(5) having a transmissive-ref ractive element and a second optical system (3') having a reflective-refractive element. An image formed on the light valve is projected by the projection optical system on a projection surface (4). The optical axis in the first optical system(5) is folded both vertically and horizontally. The first group (5A) of the first optical system is contained in a space (dead space) whose lower limit is defined by a lower edge of the second optical system(3') / thereby reducing the depth of the apparatus.
摘要翻译：一种能够提供高图像质量并且具有减小的尺寸的投影光学装置。投影光学装置包括光阀和包括具有透射反射元件的第一光学系统（5）和具有反射折射元件的第二光学系统（3'）的投影光学系统。形成在光阀上的图像被投影光学系统投射在投影面（4）上。第一光学系统（5）中的光轴垂直和水平折叠。第一光学系统的第一组（5A）包含在其下限由第二光学系统（3'）的下边缘限定的空间（死区）中，从而减小了设备的深度。

2. 发明申请

WO2008069253A1 PROJECTION OPTICAL SYSTEM AND IMAGE PROJECTING APPARATUS 审中-公开
标题翻译：投影光学系统和图像投影设备
公开(公告)号：WO2008069253A1
公开(公告)日：2008-06-12
申请号：PCT/JP2007/073527
申请日：2007-11-28
申请人： RICOH COMPANY, LTD. , ABE, Issei , FUJITA, Kazuhiro , TAKAURA, Atsushi
发明人： ABE, Issei , FUJITA, Kazuhiro , TAKAURA, Atsushi
IPC分类号： G02B13/16 , G02B13/18 , G03B21/00 , H04N5/74
CPC分类号： G03B21/2066 , G02B17/0852 , G02B17/0896 , G03B21/005 , G03B21/10 , G03B21/28
摘要： A projection optical system comprising a first optical system configured to form a first image conjugated with an object and a second optical system configured to project a second image conjugated with the first image toward a projection surface, in which at least one of the first optical system and second optical system comprises at least one optical element(s) movable relative to the object is provided, wherein an image distance of the projection optical system is changed and a size of the second image is changed, by moving at least one of the optical element(s) relative to the object.
摘要翻译：一种投影光学系统，包括被配置为形成与物体共轭的第一图像的第一光学系统和配置成将与第一图像共轭的第二图像投影到投影表面的第二光学系统，其中，第一光学系统并且第二光学系统包括相对于物体可移动的至少一个光学元件，其中通过移动光学系统中的至少一个来改变投影光学系统的图像距离并改变第二图像的尺寸元素相对于对象。

3. 发明申请

WO2011145535A1 PROJECTION OPTICAL SYSTEM AND IMAGE PROJECTION DEVICE 审中-公开
标题翻译：投影光学系统和图像投影设备
公开(公告)号：WO2011145535A1
公开(公告)日：2011-11-24
申请号：PCT/JP2011/061116
申请日：2011-05-09
申请人： RICOH COMPANY, LTD. , TAKAHASHI, Tatsuya , FUJITA, Kazuhiro , ABE, Issei
发明人： TAKAHASHI, Tatsuya , FUJITA, Kazuhiro , ABE, Issei
IPC分类号： G02B17/08 , G02B13/18 , G03B21/14
CPC分类号： G02B17/08 , G02B17/0852 , G03B21/14 , G03B21/28
摘要： A disclosed projection optical system projects images on a surface to be projected on. The projection optical system includes a first optical system including at least one refraction optical system and having positive power as a whole, a folding mirror, and a second optical system including at least one reflection surface having power and having positive power as a whole. Further the folding mirror folds a light path from the first optical system to the second optical system, and in a plane including an optical axis of the first optical system and a normal line of the surface to be projected on, the following conditional expressions (1) through (3) are satisfied (1) 0.43≤d 1 , (2) 0.43≤d 2 , and (3) 0.7≤d 2 /d 1 ≤2.0.
摘要翻译：所公开的投影光学系统在要投影的表面上投影图像。投影光学系统包括至少一个折射光学系统和整个具有正光焦度的第一光学系统，折叠反射镜和包括至少一个反射面的第二光学系统，该反射面整体上具有正的光焦度。此外，折叠镜折叠从第一光学系统到第二光学系统的光路，并且在包括第一光学系统的光轴和要投影的表面的法线的平面中，以下条件表达式（1 （3）满足（1）0.43 = d1，（2）0.43 = d2，（3）0.7 = d2 / d1 = 2.0。

4. 发明申请

WO2010035880A1 WIDE-ANGLE LENS AND IMAGING APPARATUS USING THE SAME 审中-公开
标题翻译：使用相同的宽角镜头和成像装置
公开(公告)号：WO2010035880A1
公开(公告)日：2010-04-01
申请号：PCT/JP2009/067117
申请日：2009-09-24
申请人： RICOH COMPANY, LTD. , ABE, Issei , YOSHIDA, Hayato , MONIWA, Naoki
发明人： ABE, Issei , YOSHIDA, Hayato , MONIWA, Naoki
IPC分类号： G02B13/04 , G02B13/18
CPC分类号： G02B13/04 , G02B9/60 , G02B13/0045 , G02B13/18
摘要： A wide-angle lens comprising: an imaging lens system, including: a front lens group, an aperture, and a rear lens group, arranged in that order from an object side to an image side; wherein said front lens group comprises first and second lens elements, having negative power respectively, and a third lens that is a positive lens, arranged in that order from the object side to an aperture side; wherein said rear lens group comprises fourth and fifth lens elements, having positive power respectively, arranged in order from the aperture side to the image side; where an incident angle to an optical axis of the imaging lens system of a chief ray of a maximum angle of view passing through the aperture is θI, the following Expression 1 is satisfied. 40° (degrees)
摘要翻译：一种广角镜头，包括：成像透镜系统，包括：从物体侧到像侧依次配置的前透镜组，光圈和后透镜组; 其中所述前透镜组包括分别具有负功率的第一和第二透镜元件和作为正透镜的第三透镜，从物体侧到孔侧依次布置; 其中所述后透镜组包括分别具有正光焦度的第四和第五透镜元件，从孔侧到像侧依次布置; 其中通过孔径的最大视角的主光线的成像透镜系统的光轴的入射角为ΔI，满足以下表达式1。 40°（度）<θI <60°（度）....表达式1

5. 发明申请

WO2008120775A1 WIDE-ANGLE LENS AND IMAGE CAPTURING APPARATUS 审中-公开
标题翻译：宽角镜头和图像捕获设备
公开(公告)号：WO2008120775A1
公开(公告)日：2008-10-09
申请号：PCT/JP2008/056284
申请日：2008-03-25
申请人： RICOH COMPANY, LTD. , TAKAHASHI, Yasushi , MONIWA, Naoki , KAWASAKI, Toshiyuki , YOSHIDA, Hayato , KASAHARA, Ryosuke , ABE, Issei , HAMANO, Yukiko
发明人： YOSHIDA, Hayato , KASAHARA, Ryosuke , ABE, Issei , HAMANO, Yukiko
IPC分类号： G02B13/00 , G02B13/18
CPC分类号： G02B13/06 , G02B9/34
摘要： A wide-angle lens is disclosed that includes a front lens group and a rear lens group that are arranged in order from an object side to an image side with an aperture being arranged between the front lens group and the rear lens group. The front lens group includes at least two lenses arranged toward the object side that have positive powers, and at least one lens arranged toward the image side that has a negative power. The rear lens group includes at least one lens having a positive power. One of the lenses of the front lens group arranged second in order from the object side has a lens face that is arranged into an aspheric surface. The front lens group, the aperture, and the rear lens group make up an image forming system having an angle of view greater than 180 degrees.
摘要翻译：公开了一种广角镜头，其包括从物体侧到像侧依次布置的前透镜组和后透镜组，其中孔被布置在前透镜组和后透镜组之间。前透镜组包括朝向物体侧布置的具有正光焦度的至少两个透镜，以及朝向图像侧布置的具有负光焦度的至少一个透镜。后透镜组包括至少一个具有正功率的透镜。从物体侧依次排列的前透镜组的透镜中的一个具有布置在非球面中的透镜面。前透镜组，光圈和后透镜组构成具有大于180度的视角的图像形成系统。

6. 发明申请

WO2021125018A1 LIGHT EMITTING DEVICE, OBJECT DETECTING DEVICE, AND MOBILE BODY 审中-公开
公开(公告)号：WO2021125018A1
公开(公告)日：2021-06-24
申请号：PCT/JP2020/045885
申请日：2020-12-09
申请人： RICOH COMPANY, LTD. , NAKAMURA, Kento , NAKAMURA, Tadashi , KISHIWADA, Jun , ABE, Issei
发明人： NAKAMURA, Kento , NAKAMURA, Tadashi , KISHIWADA, Jun , ABE, Issei
IPC分类号： G01S7/481 , G01S17/42 , G01S7/4814 , G01S7/4817
摘要： In a light emitting device configured to emit scanning light to irradiate a target area, the light emitting device includes a light emitter configured to emit light; and a scanner including a deflecting surface configured to deflect the light as a result of being turned around a turning axis, to generate the scanning light. The light emitter is on a target area side of the deflecting surface, and the light emitter is further configured to emit the light to the deflecting surface in such a manner that a central axis of the light intersects a plane perpendicular to the turning axis.

7. 发明申请

WO2010122882A1 WIDE ANGLE LENS AND IMAGING DEVICE 审中-公开
标题翻译：宽角镜头和成像装置
公开(公告)号：WO2010122882A1
公开(公告)日：2010-10-28
申请号：PCT/JP2010/055782
申请日：2010-03-24
申请人： RICOH COMPANY, LTD. , ABE, Issei , YOSHIDA, Hayato , MONIWA, Naoki
发明人： ABE, Issei , YOSHIDA, Hayato , MONIWA, Naoki
IPC分类号： G02B13/00 , G02B13/18
CPC分类号： G02B13/06
摘要： A wide angle lens whose field angle exceeds 160 degrees, includes a front group, an aperture stop, and a rear group arranged in this order from an object-side toward an image-side. The front group includes a first lens (negative meniscus) whose convex surface faces the object, a second lens (negative), a third lens (negative), and a fourth lens (positive), arranged in this order from the object-side toward the image-side. The rear group includes a fifth lens (positive), a sixth lens (negative), and a seventh lens (positive), arranged in this order from an aperture-side toward the image- side. The fifth and sixth lenses are combined, forming a cemented lens having positive refractive power. The fifth and sixth lenses are made of materials having Abbe numbers of greater than or equal to 50 and less than or equal to 30, respectively. A surface of the seventh lens facing the image is aspheric.
摘要翻译：场角超过160度的广角镜头包括从物体侧朝向像侧依次排列的前组，孔径光阑和后组。前组包括凸面朝向物体的第一透镜（负弯月面），第二透镜（负像），第三透镜（负像）和第四透镜（正），从物侧朝向图像侧。后组包括从孔径侧向图像侧依次排列的第五透镜（正），第六透镜（负像）和第七透镜（正）。组合第五和第六透镜，形成具有正屈光力的胶合透镜。第五和第六透镜分别由阿贝数大于等于50且小于等于30的材料制成。面对图像的第七透镜的表面是非球面的。

8. 发明申请

WO2010113669A1 WIDE ANGLE LENS AND IMAGING DEVICE 审中-公开
标题翻译：宽角镜头和成像装置
公开(公告)号：WO2010113669A1
公开(公告)日：2010-10-07
申请号：PCT/JP2010/054742
申请日：2010-03-15
申请人： RICOH COMPANY, LTD. , YOSHIDA, Hayato , MONIWA, Naoki , ABE, Issei
发明人： YOSHIDA, Hayato , MONIWA, Naoki , ABE, Issei
IPC分类号： G02B13/00 , G02B13/18
CPC分类号： G02B13/06 , G02B9/62 , G02B13/0045
摘要： A wide angle lens whose field angle exceeds 180 degrees includes a front group, a diaphragm, and a rear group arranged in this order from an object side toward an image side. The front group includes a first lens (negative meniscus lens) whose convex surface faces the object side, a second lens (negative lens), and a third lens (positive lens) that are arranged in this order from the object side toward the image side. The rear group includes a fourth lens (positive lens), a fifth lens (negative lens), and a sixth lens (positive lens) that are arranged in this order from a diaphragm side toward the image side. Accordingly, an imaging system including six separate lenses is formed. The third lens is made of a material having an Abbe number νdL3 satisfying νdL3
摘要翻译：场角超过180度的广角镜头包括从物体侧朝向像侧依次配置的前组，隔膜和后组。前组包括凸面朝向物体侧的第一透镜（负弯月透镜），第二透镜（负透镜）和第三透镜（正透镜），其从物侧朝向像侧依次排列。后组包括从隔膜侧朝向像侧依次布置的第四透镜（正透镜），第五透镜（负透镜）和第六透镜（正透镜）。因此，形成包括六个分开的透镜的成像系统。第三透镜由具有满足ΔdL3<21的阿贝数ΔdL3的材料制成。第五透镜由具有满足ΔdL5<21的阿贝数vdL5的材料制成。

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