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91. 发明专利

JPS62272220A OPTICAL SYSTEM OF VIDEO CAMERA 失效
公开(公告)号：JPS62272220A
公开(公告)日：1987-11-26
申请号：JP11453686
申请日：1986-05-21
申请人： HITACHI LTD
发明人： HISADA TAKAKI , TANITSU MASAHIKO
IPC分类号： G02B9/16 , G02B9/34 , G02B13/18
摘要： PURPOSE:To correct various aberration and to reduce the size and weight of an optical system for a video camera by forming a resin layer with a prescribed face shape on either one surface or both the surfaces of an infrared-ray cutting filter and a low pass filter arranged in the optical system. CONSTITUTION:A diaphragm 1, constitutional lenses 2-4 and a filter 5 are successively arranged from an object side. The lens 2 is a convex lens, the lens 3 is a concave lens and the lens 4 is a convex lens. The optical image of the object is formed on the image pickup surface of an image pickup element 7 through the lenses 2-4 and a color aberration, a spherical aberration and Petzval's sum are also corrected. The filter 5 is a low pass filter, its surface R8 on the object side is coated with a film for cutting off infrared rays and its surface R9 on the image pickup element 7 side is coated with an aspherical resin layer 6. Commatic aberration and astigmatism appearing on the peripheral part of a screen can be sufficiently corrected by the resin layer 6. Since the three constitutional lenses are used, the size and weight of the system can be reduced.

92. 发明专利

JPS61267720A TRIPLET LENS HAVING REAR DIAPHRAGM 失效
公开(公告)号：JPS61267720A
公开(公告)日：1986-11-27
申请号：JP10938085
申请日：1985-05-23
申请人： KONISHIROKU PHOTO IND
发明人： FUJITA HISAO
IPC分类号： G02B9/12 , G02B9/16
摘要： PURPOSE:To obtain a superior wide angle lens having a short back focus by arranging a positive meniscus lens having a specific focal distance and turning its convex surface to the object side, a negative single lens having concave surfaces on both the sides and a positive lens having convex surfaces on both the sides successively from the object side with specific intervals each other. CONSTITUTION:The positive meniscus lens turning its convex surface to the object side, the negative lens having concave surfaces on both the sides and the positive lens having convex surfaces on both the sides are arranged successively from the object side with slight air intervals, a diaphragm is arranged adjacently on the back of these lenses and conditions such as (1) 0.135

93. 发明专利

JPS6145804B2 失效
公开(公告)号：JPS6145804B2
公开(公告)日：1986-10-09
申请号：JP5754378
申请日：1978-05-17
申请人： KONISHIROKU PHOTO IND
发明人： MATSUMARU TAKASHI , ISHAMA SHOZO
IPC分类号： G02B26/10 , G02B9/12 , G02B9/16 , G02B9/34 , G02B13/00 , G02B26/12 , G02B27/00

94. 发明专利

JPS61129611A Photographing lens 失效
标题翻译：摄影镜头
公开(公告)号：JPS61129611A
公开(公告)日：1986-06-17
申请号：JP25087284
申请日：1984-11-28
申请人： Canon Inc
发明人： KITAGISHI NOZOMI , NAKAYAMA HIROKI
IPC分类号： G02B9/00 , G02B9/12 , G02B9/16
摘要： PURPOSE: To eliminate the flare to obtain images of good contrast by using a distributed index lens as a double convex position lens just before a stop of a stop postpositive lens and giving a negative gradient of refractive index to the apex of the image-side surface of the positive lens.
CONSTITUTION: The first positive lens which has a convex surface having a high curvature on the object side, the second negative lens which has a concave surface having a high curvature on the image side, the third double convex lens 3, and the stop are arranged in order from the object side, and the third lens is constituted with a distributed index lens whose refractive index is varied in the direction of the optical axis. A gradient dN(x)/dx of the refractive index distribution in the direction of the optical axis at the apex of the image-side surface of the third lens in the case where the focal length of the whole of the system is standardized to one is set to satisfy a formula, thereby compensating aberrations.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：为了消除耀斑，通过使用分布式折射率透镜作为停止后的正反射透镜之前的双凸起位置透镜，并向像侧表面的顶点给出负梯度的折射率，以获得良好对比度的图像的正透镜。构成：在物体侧具有高曲率的凸面的第一正透镜，在像侧具有高曲率的凹面的第二负透镜，第三双凸透镜3和止挡件并且第三透镜由其折射率在光轴方向上变化的分布折射率透镜构成。在整个系统的焦距被标准化为1的情况下，在第三透镜的像侧表面的顶点处的光轴方向上的折射率分布的梯度dN（x）/ dx 被设定为满足公式，从而补偿像差。

95. 发明专利

JPS61113017A Optical system 失效
标题翻译：光学系统
公开(公告)号：JPS61113017A
公开(公告)日：1986-05-30
申请号：JP23559784
申请日：1984-11-08
申请人： Canon Inc
发明人： NAKAYAMA HIROKI , KITAGISHI NOZOMI
IPC分类号： G02B9/00 , G02B9/12 , G02B9/16 , G02B9/20
CPC分类号： G02B9/02 , G02B9/10 , G02B9/16 , G02B13/001
摘要： PURPOSE: To attain high-level aberration compensation by forming at least one lens element so that its refractive index varies in the optical-axis direction and the distribution of the refractive index is maximum at either an optical-axis position or the tree end position of the lens.
CONSTITUTION: The refractive index distribution of the lens is given an extreme value (minimum value) of the refractive index at one point on the optical axis (and on tree end surface 23). When an off-axis light beam 12 is incident on a point 13, the light beam is refracted small because the refractive index at the point 13 is smaller than that at a point 21, and a light beam C' is converted on the same position with a paraxial on-axis light beam 11 because the refractive index at a point on a projection surface is smaller than that a point 22. Namely, the extremal value of the refractive index distribution is provided in the lens to put aberrations in charge of two surfaces effectively, so that the spherical aberration is never compensated insufficiently.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：为了通过形成至少一个透镜元件以使其折射率在光轴方向上变化并且折射率的分布在光轴位置或树末端位置处是最大的，以获得高水平的像差补偿镜头。构成：透镜的折射率分布在光轴（和树端面23）上的一个点处被赋予折射率的极值（最小值）。当离轴光束12入射到点13上时，由于点13处的折射率小于点21处的折射率，所以光束被折射小，并且光束C'被转换成相同的位置具有近轴的轴上光束11，因为投影表面上的点处的折射率小于点22处的折射率。即，在透镜中提供折射率分布的极值以将像差设为两个表面有效地使球面像差从不补偿不足。

96. 发明专利

JPS6177816A Front stop wide angle lens 失效
标题翻译：前方停止宽角度镜头
公开(公告)号：JPS6177816A
公开(公告)日：1986-04-21
申请号：JP19952684
申请日：1984-09-26
申请人： Ricoh Co Ltd
发明人： FUJIOKA IWATATSU
IPC分类号： G02B9/12 , G02B9/16
CPC分类号： G02B9/16
摘要： PURPOSE: To prevent the generation of coma at a wide angle of view and the overcorrection of a meridional image surface by adopting a front stop lens which satisfies specific conditions with respect to the kind, shape and charac teristics of lenses with simple constitution consisting of 3 pieces of single lenses.
CONSTITUTION: The 1st, 2nd and 3rd lenses, successively from the object side consist of L
1 of a biconvex positive lens, L
2 of a biconcave negative lens and L
3 of a meniscus positive lens directing the convex face to the image side. These lenses satisfy the conditions of the equations IWV where r
i is designated as the radius of curvature of the 1st refractive plane from the object side, d
i as the 1st axial lens thickness or lens spacing, Σd as the overall length of the lenses and f as the focal length of the entirelens system. Not only the astig matism in the meridional direction but also various aberrations are extremely satisfactorily corrected in spite of the disadvantageous restriction of the front stop and wide angle of view with the simple constitution consisting of 3 elements and 3 groups.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：为了防止通过采用满足特定条件的前挡块镜片，以广角度的视角产生昏迷和子午影像表面的过度校正，该镜头具有简单的构成，由3个组成的镜片的种类，形状和特征单张镜片。构成：从物体侧连续的第1，第2和第3透镜由双凸面正透镜的L1，双凹面透镜的L2和弯月面正透镜的L3构成，将凸面指向像侧。这些透镜满足方程式IV的条件，其中ri被指定为从物体侧的第一折射平面的曲率半径，di表示为第一轴向透镜厚度或透镜间隔，作为透镜的总长度的SIGMAd，f表示为整个系统的焦距。尽管以3个元素和3个组为单位的简单结构，尽管前挡块和广视角的不利限制，不仅在子午方向上的散光矩阵，而且各种像差都非常令人满意地校正。

97. 发明专利

JPS60177313A TRIPLET LENS 失效
公开(公告)号：JPS60177313A
公开(公告)日：1985-09-11
申请号：JP3398584
申请日：1984-02-24
申请人： NIPPON KOGAKU KK
发明人： WAKAMIYA KOUICHI
IPC分类号： G02B9/12 , G02B9/16
摘要： PURPOSE:To compensate various aberrations by allowing an optical system consists of the 1st positive meniscus lens having a convex surface on an object side, the 2nd biconcave negative lens, and the 3rd biconvex positive lens successively from the object side to meet specific requirements. CONSTITUTION:This triplet lens consists of the 1st, the 2nd, and the 3rd lenses L1, L2, and L3 successively from the object side and meets various requirements shown by inequalities I -XII. In the inequalities, SIGMAd is the overall length of the lens, (f) is the composite focal length of the lens, and (ri) is the radius of curvature of the (i)th surface from the object side; and (di) is the (i)th gap, (ni) is the refractive index of the (i)th lens from the object side, and nui is the Abbe number of the (i)th lens from the object side. Further, (fi) is the focal length of the (i)th lens from the object side.

98. 发明专利

JPS60176011A BEHIND DIAPHRAGM LENS 失效
公开(公告)号：JPS60176011A
公开(公告)日：1985-09-10
申请号：JP3190484
申请日：1984-02-22
申请人： NIPPON KOGAKU KK
发明人： WAKAMIYA KOUICHI
IPC分类号： G02B9/12 , G02B9/16 , G02B9/20
摘要： PURPOSE:To hold a compact shape, and also to correct satisfactorily a comatic aberration and an astigmatism by determining suitably an interval, a focal distance, a shape, etc. of each lens in a deformed Tessar type constituted of three groups and four pieces. CONSTITUTION:A behind diaphragm lens consists of a positive meniscus lens L1, a biconcave lens L2, a biconvex lens L3, and a negative meniscus lens L4 in order from an object side, and a diaphragm S is placed in an image side. In this state, when the overall length of the lens, a synthesized focal distance, a radius of curvature and a face interval of the i-th surface from the object side, radiuses of curvature of the i-th lens from the object side, and a focal distance of the lens L1 are denoted as SIGMAd, (f), ri and di, ni and nui, and f1, respectively, they are set so as to satisfy the expressions.

99. 实用新型

JPS5831512U 失效
公开(公告)号：JPS5831512U
公开(公告)日：1983-03-01
申请号：JP12422281
申请日：1981-08-24
IPC分类号： G02B13/00 , G02B9/16

100. 发明专利

JPS572012A TRIPLET LENS HAVING LAST DIAPHRAGM 失效
公开(公告)号：JPS572012A
公开(公告)日：1982-01-07
申请号：JP7439080
申请日：1980-06-04
申请人： KONISHIROKU PHOTO IND
发明人： ISHIYAMA SHIYOUZOU , WATANABE RIYOUKO
IPC分类号： G02B9/12 , G02B9/16
摘要： PURPOSE:To make a lens of about F4.0 have a value of an angle of field of 64 deg. or so, and also to reduce its binetting, by satisfying a prescribed condition in a triplet type lens. CONSTITUTION:A positive meniscus single lens whose convex surface has been directed toward an object side, a negative biconcave single lens and a positive biconvex lens are placed at small air intervals each in order from the object side. In an optical system where a diaphragm has been placed in the proximity of a lens in its image side, when f, fi, f1.2, di and SIGMAd denote a focal length of the whole system, a focal length of the i-th lens from the object side, a composite focal length of two lenses of the object side, the i-th surface space from the object side, and a surface space between the first surface and the sixth surface, respectively, in an optical system where a diaphragm has been placed in the proximity of a lens at its image side, the conditions of expression I - expression V are satisfied.

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