CN108008372A - A kind of focusing type laser ranging receiving optics - Google Patents

A kind of focusing type laser ranging receiving optics Download PDF

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Publication number
CN108008372A
CN108008372A CN201711319361.2A CN201711319361A CN108008372A CN 108008372 A CN108008372 A CN 108008372A CN 201711319361 A CN201711319361 A CN 201711319361A CN 108008372 A CN108008372 A CN 108008372A
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China
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lens
vertex
sphere
positive
optical
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CN201711319361.2A
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Chinese (zh)
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CN108008372B (en
Inventor
刘柯
朱浩
宋金城
董利军
郭力振
缪寅宵
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China Academy of Launch Vehicle Technology CALT
Beijing Aerospace Institute for Metrology and Measurement Technology
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China Academy of Launch Vehicle Technology CALT
Beijing Aerospace Institute for Metrology and Measurement Technology
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4816—Constructional features, e.g. arrangements of optical elements of receivers alone
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/483—Details of pulse systems
    • G01S7/486—Receivers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/491—Details of non-pulse systems
    • G01S7/4912—Receivers
    • 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
    • G02B15/173—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 +-+

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

A kind of focusing type laser ranging receiving optics, including fixed microscope group, optical filter and convergence focusing group, and optical system right-most position is system detector photosurface；Fixed microscope group includes positive single lens A and negative simple lens, and wherein positive lens A is located at close to object space side.Simple lens A and the control of negative simple lens are emitted to the light angle of optical filter by negative lens；It is convex spherical on the left of positive lens A, sphere curvature radius 99.03mm, right side is convex spherical, sphere curvature radius 2114.03mm, axially at intervals of 10mm, focal length 68.13mm between two sphere vertex of left and right；It is convex spherical on the left of negative lens, sphere curvature radius 40.96mm, right side is concave spherical surface, sphere curvature radius 21.29mm, axially at intervals of 4mm between two sphere vertex of left and right；Optical filter is a plate glass, its two face in left and right is plane, axially spaced-apart 3mm；Axially spaced-apart is 4mm between optical filter left side plane and the right side concave spherical surface vertex of negative lens B.

Description

A kind of focusing type laser ranging receiving optics
Technical field
The invention belongs to field of optical systems, and in particular to a kind of focusing type laser ranging receiving optics.
Background technology
In laser ranging system, laser emission optical system is by laser projection to object under test surface.Laser is through to be measured Received after object diffusing reflection by receiving optics and converge to detector, converted optical signals to electric signal and further located Reason, calculates the air line distance between measuring system coordinate origin and object under test surface laser incident point.Design at present such Receiving optics is considered as the following aspects：
(1) since the scope of measurement distance is larger, optical system should have focusing function, for different operating distances into Row focusing, makes the light into receiving optics converge in all the time in the photosurface of detector, lifting reaches detector photosurface Light energy, improve signal-to-noise ratio, this is conducive to follow-up signal processing；
(2) optical filter should be provided with system, the light beyond measurement wavelength is filtered out, reduces the influence of veiling glare；
(3) optical system structure should try one's best simply, easy to implement.
The content of the invention
It is an object of the invention to provide a kind of focusing type laser ranging receiving optics, meet 1~50m of operating distance Measuring three-dimensional morphology demand, in whole operating distance, by focus ensure into receiving optics light as far as possible concentrate Ground is incided in the detector photosurface of a diameter of 0.2mm, improves signal-to-noise ratio..
Technical scheme is as follows：A kind of focusing type laser ranging receiving optics, including fixed microscope group, optical filtering Piece and convergence focusing group, and optical system right-most position is system detector photosurface；Fixed microscope group include positive single lens A and Negative simple lens, wherein positive lens A are located at close to object space side.Simple lens A and the control of negative simple lens are emitted to optical filtering by negative lens The light angle of piece；It is convex spherical on the left of positive lens A, sphere curvature radius 99.03mm, right side is convex spherical, spheric curvature Radius is 2114.03mm, axially at intervals of 10mm, focal length 68.13mm between two sphere vertex of left and right；It is convex ball on the left of negative lens Face, sphere curvature radius 40.96mm, right side are concave spherical surface, sphere curvature radius 21.29mm, between two sphere vertex of left and right Axially spaced-apart is 4mm；Axially spaced-apart between the right side convex spherical vertex of positive lens A and the left side convex spherical vertex of negative lens is 86mm；
Optical filter is a plate glass, its two face in left and right is plane, axially spaced-apart 3mm；It is flat on the left of optical filter Axially spaced-apart is 4mm between face and the right side concave spherical surface vertex of negative lens B, optical filter；
Converging focusing group includes positive single lens B and and positive single lens C；Positive single lens B with and positive single lens C have it is identical Structural parameters, are all that left side is convex spherical, sphere curvature radius 25.43mm, right side is concave spherical surface, and sphere curvature radius is 82.25mm, axially at intervals of 4mm between two sphere vertex of left and right, wherein the positive lens C close to photosurface can be in positive lens and photosensitive Move along a straight line between face, and then realize focusing；The optical axis of positive lens C and the axis of remaining optical mirror slip are protected during focusing Prudent conjunction, and the axially spaced-apart between the concave spherical surface vertex of positive lens B and photosurface remains unchanged.
The positive lens A is made using H-ZK10 optical glass.
The negative lens is made using H-ZK10 optical glass, and focal length is -79.45mm.
The optical filter is manufactured using H-ZK10 optical glass, its left and right side surface is coated with that 1550nm is anti-reflection, its repercussions It is long by optical thin film.
The positive single lens B and all manufactured with positive single lens C with H-ZK10 optical glass, focal length 59.35mm.
The axial distance of convex spherical vertex and optical filter is 2mm, right side concave spherical surface vertex and photosurface position on the left of positive lens B The axially spaced-apart put is 32mm.
The remarkable result of the present invention is：The laser receiver system 1~50m different operatings apart from when, at photosurface The root mean square diameter of hot spot, as shown in Figure 4.As can be seen that the reception system in whole operating distance, can be made by focusing Spot diameter at photosurface 4 is consistently less than 0.06mm, in photosurface effective coverage (diameter 0.2mm)；Whole eyeglasses make Manufactured with same optical glass material, and convergence focusing two lens of group are identical, advantageously reduce optical element processing cost. The maximum angle being incident in whole operating distance between the light of optical filter and optical filter surface normal is less than 1.96 °, can be with Obtain preferable filter effect.
Brief description of the drawings
Fig. 1 is that focusing type laser ranging receiving optics operating distance of the present invention is 1m schematic diagrames；
Fig. 2 is that focusing type laser ranging receiving optics operating distance of the present invention is 50m schematic diagrames；
Axial directions of the Fig. 3 between focusing type laser ranging receiving optics positive lens 7 of the present invention and positive lens 8 Interval variation curve
Fig. 4 is optical system after focusing at focusing type laser ranging receiving optics different operating distance of the present invention The disc of confusion of system
In figure：1 fixation microscope group, 2 optical filters, 3 convergence focusing groups, 4 system detector photosurfaces, 5 positive lens A, 6 negative lists are saturating Mirror, 7 positive single lens B, 8 positive single lens C,
Embodiment
A kind of focusing type laser ranging receiving optics, including fixed microscope group 1, optical filter 2 and convergence focusing group 3, and Optical system right-most position is system detector photosurface 4.As shown in Figure 1.Fixed microscope group 1 includes positive single lens A5 and negative list Lens 6, wherein positive lens A5 are located at close to object space side.Simple lens A5 constitutes similar Galilean telescope system with negative simple lens 6 System structure type, for compression light beam bore, controls the light angle that optical filter 2 is emitted to by negative lens 6.So on the one hand can With the bore for reducing optical filter 2 and converging focusing group 3, overall weight is reduced, still further aspect is can make to be incident to optical filter 2 2 surface normal of light and optical filter between angle it is smaller, filter effect is good.It is convex spherical on the left of positive lens A5, sphere is bent Rate radius is 99.03mm, and right side is convex spherical, sphere curvature radius 2114.03mm, axially spaced-apart between two sphere vertex of left and right For 10mm, made using H-ZK10 optical glass, focal length 68.13mm；The left side of negative lens 6 is convex spherical, sphere curvature radius For 40.96mm, right side is concave spherical surface, sphere curvature radius 21.29mm, axially at intervals of 4mm between two sphere vertex of left and right, is made Made of H-ZK10 optical glass, focal length is -79.45mm.The right side convex spherical vertex and the left side of negative lens 6 of positive lens A5 is convex Axially spaced-apart between sphere vertex is 86mm.
Optical filter 2 is a plate glass, its two face in left and right is plane, and axially spaced-apart 3mm, uses H-ZK10 light Learn glass manufacture；Axially spaced-apart is 4mm between 2 left side plane of optical filter and the right side concave spherical surface vertex of negative lens B6, optical filter 2 Left and right side surface be coated with 1550nm is anti-reflection, its commplementary wave length by optical thin film.Optical filtering is incident in whole operating distance Maximum angle between the light and optical filter surface normal of piece is less than 1.96 °, can obtain preferable filter effect.
Converging focusing group 3 includes positive single lens B7 and and positive single lens C8.Positive single lens B7 with and positive single lens C8 have Identical structural parameters, are all that left side is convex spherical, sphere curvature radius 25.43mm, right side is concave spherical surface, and spheric curvature is partly Footpath is 82.25mm, axially at intervals of 4mm between two sphere vertex of left and right, and is all manufactured with H-ZK10 optical glass, focal length is 59.35mm.Positive lens C8 wherein close to photosurface 4 can move along a straight line between positive lens 7 and photosurface 4, and then realize Focusing.The optical axis of positive lens C8 keeps overlapping with the axis of remaining optical mirror slip during focusing, and the recessed ball of positive lens B7 Axially spaced-apart between vertex of surface and photosurface 4 remains unchanged.On the left of positive lens B7 convex spherical vertex and optical filter 2 it is axial away from From for 2mm, right side concave spherical surface vertex and the axially spaced-apart of photosurface position 4 are 32mm.
Corresponding 1m~50m different operating distances, positive lens C8 left side convex spherical vertex and concave spherical surface top on the right side of positive lens B7 Axially spaced-apart between point is as shown in Figure 3 from 1.9mm~9.7mm consecutive variations, change curve.

Claims (6)

  1. A kind of 1. focusing type laser ranging receiving optics, it is characterised in that：Including fixed microscope group (1), optical filter (2) and converge Poly- focusing group (3), and optical system right-most position is system detector photosurface (4)；Fixed microscope group (1) includes positive single lens A (5) and negative simple lens (6), wherein positive lens A (5) are located at close to object space side.Simple lens A (5) and negative simple lens (6) control The light angle of optical filter (2) is emitted to by negative lens (6)；It is convex spherical on the left of positive lens A (5), sphere curvature radius is 99.03mm, right side are convex spherical, sphere curvature radius 2114.03mm, axially at intervals of 10mm between two sphere vertex of left and right, Focal length is 68.13mm；It is convex spherical on the left of negative lens (6), sphere curvature radius 40.96mm, right side is concave spherical surface, and sphere is bent Rate radius is 21.29mm, axially at intervals of 4mm between two sphere vertex of left and right；The right side convex spherical vertex of positive lens A (5) is with bearing Axially spaced-apart between the left side convex spherical vertex of lens (6) is 86mm；
    Optical filter (2) is a plate glass, its two face in left and right is plane, axially spaced-apart 3mm；On the left of optical filter (2) Axially spaced-apart is 4mm between plane and the right side concave spherical surface vertex of negative lens B (6), optical filter (2)；
    Converging focusing group (3) includes positive single lens B (7) and and positive single lens C (8)；Positive single lens B (7) and and positive single lens C (8) there are identical structural parameters, be all that left side is convex spherical, sphere curvature radius 25.43mm, right side is concave spherical surface, ball Curvature radius is 82.25mm, axially at intervals of 4mm between two sphere vertex of left and right, wherein the positive lens C close to photosurface (4) (8) it can move along a straight line between positive lens (7) and photosurface (4), and then realize focusing；Positive lens C (8) during focusing The axis of optical axis and remaining optical mirror slip keep overlapping, and between the concave spherical surface vertex of positive lens B (7) and photosurface (4) Axially spaced-apart remains unchanged.
  2. 2. a kind of industrial photogrammetry system camera parameter movable type scaling method according to claim 1, its feature exist In：The positive lens A (5) is made using H-ZK10 optical glass.
  3. 3. a kind of industrial photogrammetry system camera parameter movable type scaling method according to claim 1, its feature exist In：The negative lens (6) is made using H-ZK10 optical glass, and focal length is -79.45mm.
  4. 4. a kind of industrial photogrammetry system camera parameter movable type scaling method according to claim 1, its feature exist In：The optical filter (2) is manufactured using H-ZK10 optical glass, its left and right side surface is coated with that 1550nm is anti-reflection, its commplementary wave length By optical thin film.
  5. 5. a kind of industrial photogrammetry system camera parameter movable type scaling method according to claim 1, its feature exist In：The positive single lens B (7) with H-ZK10 optical glass with all being manufactured with positive single lens C (8), focal length 59.35mm.
  6. 6. a kind of industrial photogrammetry system camera parameter movable type scaling method according to claim 1, its feature exist In：Convex spherical vertex and the axial distance of optical filter (2) are 2mm, right side concave spherical surface vertex and photosurface on the left of positive lens B (7) The axially spaced-apart of position (4) is 32mm.
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN115877353A (en) * 2022-11-24 2023-03-31 苏州大学 Receiving optical machine system for laser ranging
CN116500587A (en) * 2023-06-25 2023-07-28 成都量芯集成科技有限公司 Adjustable laser ranging system

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115877353A (en) * 2022-11-24 2023-03-31 苏州大学 Receiving optical machine system for laser ranging
CN115877353B (en) * 2022-11-24 2023-08-25 苏州大学 Laser ranging's receipt ray apparatus system
CN116500587A (en) * 2023-06-25 2023-07-28 成都量芯集成科技有限公司 Adjustable laser ranging system
CN116500587B (en) * 2023-06-25 2023-08-22 成都量芯集成科技有限公司 Adjustable laser ranging system

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