WO2018076330A1 - Système de zoom optique à distance conjuguée finie à distance d'objet réglable - Google Patents

Système de zoom optique à distance conjuguée finie à distance d'objet réglable Download PDF

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Publication number
WO2018076330A1
WO2018076330A1 PCT/CN2016/103978 CN2016103978W WO2018076330A1 WO 2018076330 A1 WO2018076330 A1 WO 2018076330A1 CN 2016103978 W CN2016103978 W CN 2016103978W WO 2018076330 A1 WO2018076330 A1 WO 2018076330A1
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Prior art keywords
mirror group
lens
power
group
compensation
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PCT/CN2016/103978
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English (en)
Chinese (zh)
Inventor
赵阳
王平
刘春来
门树东
杨怀江
隋永新
Original Assignee
中国科学院长春光学精密机械与物理研究所
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Priority to PCT/CN2016/103978 priority Critical patent/WO2018076330A1/fr
Publication of WO2018076330A1 publication Critical patent/WO2018076330A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/16—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
    • G02B15/163—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group
    • G02B15/167—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses
    • G02B15/17—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses arranged +--
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/16—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
    • G02B15/20—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having an additional movable lens or lens group for varying the objective focal length

Definitions

  • the invention relates to the field of optical instruments, in particular to a finite distance conjugate optical zoom system with adjustable object distance.
  • zooming refers to an optical system in which the focal length is continuously changed within a certain range while the image plane position remains unchanged.
  • the purpose of changing the focal length is to continuously change the magnification of the system, such as the size of the scene continuously variable, so that the observer produces a feeling of near and far or far and near.
  • the optical system with shorter focal length is characterized by large field of view and low resolution; on the contrary, the optical system with longer focal length is characterized by small field of view and high resolution. Because of this, the zoom optical system is particularly suitable for searching for targets with the characteristics of short focal length and large field of view, and then adjusting to a small focal length and small field of view to accurately identify the searched target details.
  • the system is generally divided into four parts: a front fixed group, a variable power group, a compensation group, and a rear fixed group.
  • the front fixed group is responsible for constraining the light beam in the large field of view outside, so that the rear light group has a small diameter, and the design and processing are relatively simple.
  • the zoom group is responsible for adjusting the change in focal length to produce the desired focal length.
  • the compensation group is responsible for compensating for the change of the image plane position introduced by the zooming change of the zooming group, and ensuring that the image plane position does not move after the compensation.
  • the rear fixed group is mainly responsible for the correction of the residual aberration to ensure the imaging quality of the optical system during the entire zooming process.
  • the above four optical components are the basic form of the zoom system, and the advanced zoom system is derived from the optimization of the structure.
  • the development of the zoom optical system is relatively mature, and various commercial zoom systems have appeared on the market.
  • the former is mainly used for the zoom microscope objective system;
  • the latter is mainly used for the zoom camera system and the telephoto system.
  • the object and image plane are fixed, and this zoom system is suitable for most applications.
  • the moving direction of the compensation group is generally not monotonous along the optical axis direction, but is first moved in one direction, and after reaching an extreme value, then moving in the opposite direction, there is a reverse process.
  • the compensation group first moves in the negative direction of the optical axis, and there is an extreme point in the direction in the middle. After this extreme point, the compensation group is along the optical axis. Move in the positive direction until the telephoto position is reached. Due to this non-monotonicity, the angle of the zoom becomes larger when the zoom cam curve is designed in the optical machine structure, the processing becomes difficult, and sometimes the stuck or even stuck phenomenon may occur, resulting in damage and burn of the focus motor.
  • the present invention proposes a finite distance conjugate optical zoom system with adjustable object distance.
  • a finite-distance conjugate optical zoom system with adjustable object distance including a shifting objective lens group, a variator lens group, a compensating mirror group, and a rear fixing mirror sequentially disposed along an optical axis.
  • the group of objects can be moved along the optical axis to clearly image the object surface of different object distances on the image surface of the fixed position.
  • the variator lens group and the compensation mirror group are unidirectionally moved in the optical axis direction during the unidirectional zooming process.
  • the object distance adjustable finite distance conjugate optical zoom system further comprises a shifting distance cam barrel, the side wall of which is provided with a first cam curve extending in a unidirectional spiral along the axial direction of the cam barrel;
  • the adjusting object is disposed from the lens barrel to adjust the object distance mirror group clamp for clamping the object to the mirror group;
  • the adjusting object is provided with a first guiding pin on the mirror group clamp, the first guiding pin Embedding into the first cam curve, the first guiding pin moves along the first cam curve by rotating the adjusting object, and the adjusting object moves the mirror to the mirror
  • the group moves in one direction along the optical axis.
  • the object distance adjustable finite distance conjugate optical zoom system further comprises a zoom compensation cam barrel, the sidewall of which is provided with a second cam curve extending axially in the axial direction along the variable compensation cam barrel and a third cam curve
  • the variable power compensation cam barrel is provided with a variator lens holder and a compensation mirror group fixture
  • the variator lens holder clamps the variator lens group
  • the second guide pin is disposed thereon a second guide pin embedded in the second cam curve
  • the compensation mirror set clamp for clamping the compensation mirror group, on which a third guide pin is disposed, and the third guide pin is embedded
  • the double-mirror group fixture and the compensation mirror group fixture respectively drive the variable power mirror group and the compensation mirror group to be unidirectionally linked in the direction of the optical axis in the one-way zooming process.
  • the power of the object from the lens group is a positive value, which includes a positive lens power of the object of the gluing lens group and a positive power of the positive lens.
  • the power of the variator lens group is a negative value, which includes a variable power single lens of negative power and a variable power glue lens group of negative power.
  • the power of the compensation mirror set is a negative value, which is a compensated glue mirror set of negative power.
  • the power of the rear fixed mirror group is a positive value, which includes a post-fixed first single lens of positive power, a post-fixed first glued mirror group of positive power, and a second fixed fixed optical power of negative power A lens, a post-fixed third single lens of positive power, and a post-fixed second glue lens set of positive power.
  • the positive power of the dimming distance from the gluing mirror group includes a negative power of the object to be adjusted from the gluing front lens and the positive power to the gluing lens.
  • variable power gluing mirror set of negative power includes a variable power gluing front lens of negative power and a variable power gluing lens of positive power.
  • the negative power compensated glued lens set comprises a negative power compensated glued front lens and a positive power compensated glued rear lens.
  • the post-fixed first cemented mirror set of positive power comprises a post-fixed first pre-glue lens of positive power and a post-fixed first glued lens of negative power.
  • the post-fixed second cemented mirror set of positive power is post-fixed by the negative power of the second pre-bonded front lens and the positively fixed second glued rear lens of the positive power.
  • the pre-glue lens is a glass material having a small Abbe number
  • the lens after bonding is a glass material having a large Abbe number
  • both Abbe number difference values are greater than 25.
  • the focal length f 2 of the object from the mirror group is 96 mm to 122 mm
  • the focal length f 3 of the variable power lens group is -25 mm to -32 mm
  • the focal length f 4 of the compensation lens group is -25 mm to -42 mm
  • the rear fixed mirror group The focal length f 5 is 24 mm to 32 mm.
  • the focal length f 2 of the object from the mirror group is 106 mm
  • the focal length f 3 of the variable power mirror group is -29.5 mm
  • the focal length f 4 of the compensation mirror group is -32.5 mm
  • the focal length f 5 of the rear fixed mirror group is 27.9. Mm.
  • the object distance ranges from 340 mm to 380 mm.
  • the finite distance conjugate optical zoom system includes an image sensor disposed at the image plane position for receiving imaging.
  • the movement of the compensation group is monotonous along the optical axis direction, and the zoom cam is easy to process;
  • the object is in collision with the zoom group and the zoom group;
  • the chromatic aberration is corrected using a cemented lens.
  • FIG. 1 is a schematic structural view of a finite distance conjugate optical zoom system according to an embodiment of the present invention
  • FIG. 2 is a schematic structural view of a shifting target cam barrel corresponding to the mirror group of FIG. 1;
  • FIG. 3 is a schematic structural view of a variable magnification compensation cam barrel corresponding to the variable power mirror group and the compensation mirror group of FIG. 1;
  • FIG. 4 is a schematic view showing zooming of the optical zoom system of FIG. 1;
  • Figure 5 is a schematic view showing the change of the object distance in the short focal position of the optical zoom system of Figure 1;
  • Figure 6 is a schematic view showing the change of the object distance in the focal position of the optical zoom system of Figure 1;
  • Figure 7 is a schematic diagram showing the change of the object distance in the telephoto position of the optical zoom system of Figure 1;
  • Figure 8 (a) - (a) The aberration-field of view of the optical zoom system of Figure 1 at short, medium and telephoto at an object distance of 340 mm;
  • Figure 9 (a) - 9 (c) The aberration-field of view of the optical zoom system of Figure 1 at short, medium and telephoto at an object distance of 360 mm;
  • Figure 10 (a) - 10 (c) The aberration-field of view of the optical zoom system of Figure 1 at short, medium and telephoto at an object distance of 380 mm.
  • the embodiment of the invention provides a finite-distance conjugate optical zoom system with adjustable object distance, as shown in FIG. 1 , including a mirror set 2, a zoom lens group 3, and compensation arranged in the optical axis direction.
  • the position of the group 2 is adjusted to adjust the object distance, and in the observation, the rear fixed mirror group 5 and the image plane of the optical zoom system are fixed in position.
  • the power of the object from the mirror group 2 is a positive value, and the incident angle of the incident beam is constrained, so that the incident angle of the beam entering the variable magnification group 3 is small, and the high order is reduced.
  • Aberration It consists of a positive-focusing object from the gluing mirror group 21 and a positive-focusing object from the single lens 22, wherein the object of the object from the gluing mirror group 21 is a negative-gravitation object from the gluing front lens 211 and the positive light.
  • the focus of the focus is glued from the glued lens 212.
  • the power of the anamorphic lens group 3 is a negative value, which is composed of a variable power single lens 31 of negative power and a variable power glue lens group 32 of negative power, wherein the variable power gluing mirror group 32 is composed of negative light
  • the zooming front lens 321 of the power and the variable power of the positive power are bonded to the lens 322.
  • the power of the compensation mirror group 4 is a negative value, which is a compensation optical lens group 41 of the negative power, wherein the compensation glue lens group 41 is compensated by the negative refractive power of the pre-bonded front lens 411 and the positive power.
  • the lens 412 is glued together.
  • the power of the rear fixed mirror group 5 is a positive value for correcting the low-order phase difference, which is fixed by the positive fixed power of the first single lens 51, the positive fixed power of the first fixed lens group 52, and the negative optical focus.
  • the post-fixed first glued front lens 521 and the negative-gloss post-fixed first glued rear lens 522 are glued; the rear fixed second glued mirror set 55 is negative
  • the post-fixing second pre-molding lens 551 of the power and the post-fixing second gluing lens 552 of the positive power are glued together.
  • the embodiment of the invention uses five sets of glued mirror sets to correct the chromatic aberration of the zoom system.
  • the optical zoom system of the embodiment of the present invention can realize that the object distance is continuously adjustable within a certain range.
  • 2 shows a shifting distance cam barrel 6 for mounting the object from the mirror group 2, on the side wall of the shifting cam barrel 6, a cam curve 61 corresponding to the mirror group 2 is provided, the cam curve 61 is axially unidirectionally spirally extended on the side wall of the cam barrel 6 in the axial direction, and the object of the mirror group 2 is mounted in the shifting cam barrel 6 by the mirror assembly clamp, and the first guide pin on the clamp Inserted into the cam curve 61, the first guide pin on the clamp can be slid along the cam curve 61 by rotating the adjustment target from the cam barrel 6, so that the object is controlled from the mirror group 2 in the axial direction of the cam barrel 6 Move continuously.
  • the relative position between the object to the cam barrel 6 and the object to be observed remains fixed, and the position of the object to be observed can be changed by adjusting the position of the lens group 2 within the cam barrel 6.
  • the object distance is such that the observation fluctuations are very large or the three-dimensional feeling is strong.
  • the movement of the object from the mirror group 2 in the shifting target cam barrel 6 can be realized by rotating the shifting object from the cam barrel 6 by an electric motor, or by rotating the shifting target cam barrel 6 manually. achieve.
  • FIG. 3 shows a zoom compensation cam barrel 7 for mounting the variable power mirror group 3 and the compensation mirror group 4.
  • the variable power mirror group 3 and the compensation mirror group 4 are collectively disposed on the zoom compensation cam barrel.
  • the variator lens group 3 is used to adjust the change of the focal length of the zoom system
  • the compensation mirror group 4 is used to compensate for the change of the image plane position caused by the focusing of the variator lens group 3, so as to ensure that the image plane position is always fixed.
  • the anamorphic lens group 3 and the compensation mirror group 4 need to be linked together to achieve variable magnification focusing that maintains the position of the image plane.
  • FIG. 3 shows a zoom compensation cam barrel 7 for mounting the anamorphic mirror group 3 and the compensation mirror group 4, on the side wall of the variable magnification compensation cam barrel 7, a cam curve 71 corresponding to the anamorphic mirror group 3 is provided, And corresponding to the cam curve 72 of the compensation mirror group 4, both cam curves are axially unidirectionally spirally extended along the variable compensation cam barrel 7.
  • variable power mirror group 3 and the compensation mirror group 4 are respectively mounted in the variable magnification compensation cam barrel 7 through the variable power mirror group clamp and the compensation mirror group clamp, and the second guide pin and the compensation mirror group clamp on the variable magnification mirror assembly
  • the third guide pins are respectively embedded in the cam curve 71 and the cam curve 72.
  • both the cam curve 71 and the cam curve 72 are axially unidirectionally extended along the axial direction of the zoom compensation cam barrel 7, and the cam curve is simply processed, and the cam curve is used to change the zoom system from telephoto to short focus.
  • both the anamorphic lens group 3 and the compensation mirror group 4 are unidirectionally moved in the axial direction of the cam barrel 7.
  • the calculation formula of the rising angle of the cam curve 71 and the cam curve 72 is as shown in the formula (1).
  • ⁇ is the rising angle
  • ⁇ Z is the axial displacement amount of the cam curve
  • ⁇ is the circumferential rotation angle of the cam curve
  • R is the cam barrel radius
  • the cam curve 71 has an elevation angle of 26.68°
  • the cam curve 72 has an elevation angle of 2.6°, which is less than the limit value of 45°, thereby avoiding the sticking or even jamming of the lens group during the moving process. To prevent the focus motor from being damaged due to the lens being stuck.
  • the interlocking movement of the anamorphic lens group 3 and the compensation mirror group 4 in the variable compensation cam barrel 7 can be realized by the electric motor rotating zoom compensation cam barrel 7, or can be rotated manually by a manual method.
  • the compensation cam barrel 7 is realized.
  • the combined focal length value f 2 of the object to the mirror group 2 can be selected from the range of 96mm ⁇ 122mm, preferably 106mm; the combined focal length value f 3 of the variable power mirror group 3 can be selected from -25mm to -32mm, preferably -29.5mm; the combined focal length value f 4 of the compensating mirror set 4 is selectable -25 mm to -42 mm, preferably -32.5 mm; the combined focal length value f 5 of the rear fixed mirror group 5 is optionally in the range of 24 mm to 32 mm, preferably 27.9 mm.
  • the invention can realize the variation of each mirror group in the focal length range by changing parameters such as the radius of curvature and the thickness of the single lens in the lens groups.
  • the optical components in each mirror group adopt spherical surfaces, which reduces the cost of optical processing and detection while ensuring better imaging quality.
  • r represents the radius of curvature
  • d represents the distance between lenses or the thickness of the lens
  • n d represents the refractive index of d light
  • d light refers to visible light having a wavelength of 588 nm, which is commonly used as a reference light for evaluating an optical system
  • v represents an Abbe number of a lens, and units of all lengths are calculated in mm.
  • the object is adjusted from the lens group to the mirror group 21, and the front lens 211 of the mirror lens group is a glass material with a small Abbe number, and the lens lens 212 is used for the rear lens 212 of the lens group.
  • the number of glass materials, the glue of the two materials can correct the chromatic aberration.
  • the variable-folding gluing mirror group 32, the compensation group gluing mirror group 41, the rear fixing group first gluing mirror group 52 and the rear fixing group second gluing mirror group 55 are also selected by using a glass material having a large difference in Abbe number. In order to correct the chromatic aberration.
  • the Abbe number difference of each set of glue mirrors needs to be greater than 25, and is not limited to the specific values shown in Table 1.
  • A, B, and C are the adjustment object to the mirror group 2 and the variable power mirror group 3, the variable power mirror group 3 and compensation The distance between the mirror group 4, the compensation mirror group 4 and the fixed mirror group 5.
  • the fixed mirror group 5 and the image surface are fixed during the adjustment of the object distance or the zooming.
  • An image sensor such as a CCD or the like can be used to receive the image at the image plane.
  • Fig. 4 is a view showing three zoom positions of the zoom optical system of the present invention, and Table 2 shows the distance between the mirror groups at the three zoom positions of the zoom optical system of the present invention.
  • Table 2 shows the distance between the mirror groups at the three zoom positions of the zoom optical system of the present invention.
  • FIG. 5-7 are schematic diagrams showing the adjustment of the object distance in the three zoom positions of the zoom optical system of the present invention
  • Table 3 shows the zoom lens system of the present invention at three object positions at three zoom positions. 2
  • the variator lens group 3 and the compensation mirror group 4 Keep moving, by moving the object to the mirror group 2, change the distance between the object to the mirror group 2 and the zoom lens group 3, from 4.5mm to 4.4mm, then to 2.4mm, in the same image Get a clear image.
  • Table 3 only shows the distance between the object group 2 and the variator lens group 3 when the object distance is 340 mm, 360 mm and 380 mm, those skilled in the art can understand that in the present invention, the object distance can be Continuously change between 340mm and 380mm, which is determined by the fluctuation of the object surface.
  • the object distance can be moved from the mirror group 2 to change the object distance to the mirror group 2.
  • the distance from the anamorphic lens group 3 acquires a clear image on the same image plane.
  • the above only uses the short focal position as an example.
  • the zoom optical system is in the mid-focus position or the telephoto position, the fluctuation of the object surface is large or the stereoscopic effect is strong.
  • the double lens group 3 and the compensation lens group 4 are kept stationary. At this time, the distance between the object lens group 2 and the power variator lens group 3 is as shown in Table 3, and will not be explained here.
  • the adjustment object from the mirror group 2 and the variable power mirror group 3 respectively have independent cam mechanisms, and do not interfere with each other. It can be seen from Fig. 5 that during the process of changing the object distance from 340 mm to 380 mm, the object is always monotonously moved toward the image plane, that is, when the object distance is 380 mm, the object is adjusted from the lens group 2 and zoomed.
  • the distance of the mirror group 3 is the closest, as shown in Table 2, and in the short focal position, the distance is 2.4 mm, and the two cam mechanisms do not interfere with each other.
  • Table 3 at the mid-focus and telephoto positions, the distance between the object to the mirror group 2 and the variable magnification group 3 is larger, and interference is unlikely to occur.
  • FIGS. 10(a)-10(c) respectively show the present invention.
  • the optical zoom system of the embodiment has an aberration-field of view curve at three zoom positions at an object distance of 380 mm. As can be seen from the aberration curves in the figure, the image quality of the optical system of this embodiment has been well corrected.
  • the object distance when observing an object surface with a large fluctuation or a strong stereoscopic effect, the object distance can be changed from 340 mm to 380 mm by moving the object to the lens group, and the entire zoom does not need to be moved.
  • the system can obtain a clear image-fixed image, and the optical zoom system in the present invention is not limited to the specific value and range of the above object distance.
  • aspherical optics can be used in each mirror instead of spherical optics.

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  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

L'invention concerne un système de zoom optique à distance de conjugué fini ayant une distance d'objet réglable, comprenant un ensemble de lentilles de réglage de distance d'objet (2), un ensemble de lentilles à grossissement variable (3), un ensemble de lentilles de compensation (4) et un ensemble de lentilles de fixation arrière (5) disposés le long d'un axe optique en séquence, l'ensemble de lentilles de réglage de distance d'objet (2) peut se déplacer dans la direction de l'axe optique pour représenter clairement des plans d'objet avec différentes distances d'objet sur un plan d'image à des positions fixes, pour observer les plans d'objets fortement fluctuants sans déplacer les plans d'objets ou l'ensemble du système de zoom.
PCT/CN2016/103978 2016-10-31 2016-10-31 Système de zoom optique à distance conjuguée finie à distance d'objet réglable WO2018076330A1 (fr)

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CN109343026A (zh) * 2018-10-17 2019-02-15 孝感华中精密仪器有限公司 一种基于二元面的激光电视一体机光学系统
CN109387931A (zh) * 2018-11-06 2019-02-26 中国科学院西安光学精密机械研究所 一种短波红外连续变焦镜头
US10656368B1 (en) 2019-07-24 2020-05-19 Omniome, Inc. Method and system for biological imaging using a wide field objective lens
CN111830693A (zh) * 2020-06-18 2020-10-27 中国科学院西安光学精密机械研究所 一种长焦距的大视场内调焦光学系统
CN114624869A (zh) * 2022-03-10 2022-06-14 长春通视光电技术有限公司 高分辨率、大变倍比的光学系统及采用该系统的变焦镜头
CN115166946A (zh) * 2022-05-13 2022-10-11 福建福光股份有限公司 一种广角低畸变大光圈变焦光学系统
CN115291374A (zh) * 2022-07-18 2022-11-04 福建福光股份有限公司 一种超大靶面宽物距紧凑型连续变焦镜头及其成像方法
CN115616748A (zh) * 2022-09-21 2023-01-17 福建福光股份有限公司 一种高清大像面手动变倍镜头

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US20040246592A1 (en) * 2003-06-06 2004-12-09 Nikon Corporation Zoom lens system for microscope and microscope using the same
CN102576147A (zh) * 2009-12-09 2012-07-11 株式会社尼康 显微镜用变焦镜头、显微镜
CN103631006A (zh) * 2012-12-28 2014-03-12 利达光电股份有限公司 大变倍比连续变焦投射镜头
CN203455539U (zh) * 2013-08-22 2014-02-26 福建福光数码科技有限公司 高倍率高清电动两可变摄像镜头
CN104965297A (zh) * 2015-06-25 2015-10-07 福建省光学技术研究所 后组调距的视频摄像高清变焦镜头及该镜头的后组调距方法
CN105137583A (zh) * 2015-07-08 2015-12-09 宁波舜宇仪器有限公司 显微镜物镜
CN106405804A (zh) * 2016-10-31 2017-02-15 中国科学院长春光学精密机械与物理研究所 物距可调的有限远共轭距光学变焦系统

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CN109387931A (zh) * 2018-11-06 2019-02-26 中国科学院西安光学精密机械研究所 一种短波红外连续变焦镜头
CN109387931B (zh) * 2018-11-06 2023-12-08 中国科学院西安光学精密机械研究所 一种短波红外连续变焦镜头
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CN114624869A (zh) * 2022-03-10 2022-06-14 长春通视光电技术有限公司 高分辨率、大变倍比的光学系统及采用该系统的变焦镜头
CN114624869B (zh) * 2022-03-10 2024-03-29 长春通视光电技术股份有限公司 高分辨率、大变倍比的光学系统及采用该系统的变焦镜头
CN115166946A (zh) * 2022-05-13 2022-10-11 福建福光股份有限公司 一种广角低畸变大光圈变焦光学系统
CN115166946B (zh) * 2022-05-13 2023-08-11 福建福光股份有限公司 一种广角低畸变大光圈变焦光学系统
CN115291374A (zh) * 2022-07-18 2022-11-04 福建福光股份有限公司 一种超大靶面宽物距紧凑型连续变焦镜头及其成像方法
CN115616748A (zh) * 2022-09-21 2023-01-17 福建福光股份有限公司 一种高清大像面手动变倍镜头
CN115616748B (zh) * 2022-09-21 2024-04-05 福建福光股份有限公司 一种高清大像面手动变倍镜头

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