CN107561671A - A kind of double light path doubly telecentric camera lens - Google Patents
A kind of double light path doubly telecentric camera lens Download PDFInfo
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Abstract
Can possess the ability of two and three dimensions acquisition of information to the plane perpendicular to optical axis and the double light path doubly telecentric camera lens for the planar imaging for favouring optical axis, the double light path doubly telecentric camera lens the invention discloses a kind of.The double light path doubly telecentric camera lens is located at the surface of sample, line laser is provided with above the side of sample, the double light path doubly telecentric camera lens includes the lens front group set gradually from bottom to up, Amici prism, diaphragm one, lens rear group one, vertical image planes, the positive side of the Amici prism is provided with lens rear group two, and diaphragm two is provided between the Amici prism and the lens rear group two, the two positive side of lens rear group is tiltedly installed with Tilted camera, vertical object plane and the inclination object plane to be coincided with the line laser structured light face are provided with immediately below the lens front group.The present invention is applied to the technical field of optical lens.
Description
Technical field
The present invention relates to a kind of optical lens, more particularly to a kind of double light path doubly telecentric camera lens.
Background technology
Telecentric lens eliminate perspective it is poor, can correct because operating distance change caused by image magnifying power change, regarding
Feel that detection has a wide range of applications with radiographic measurement field, be mainly used in the measurement of two dimensional surface size.
Existing telecentric lens are all that the plane perpendicular to optical axis is imaged, and this feature determines existing telecentric lens
Planar information can only be detected.In vision-based detection and radiographic measurement, the two and three dimensions characteristic information of target is all
To need the physical quantity be concerned about, in existing detection mode two-dimensional signal detection and three-dimensional information detection need to use different set
Back-up does not measure, and this kind of detection mode had not only increased the complexity of detecting system but also reduced detection speed.
The content of the invention
The technical problems to be solved by the invention are overcome the deficiencies in the prior art, there is provided one kind can be to perpendicular to optical axis
Plane and favour optical axis planar imaging double light path doubly telecentric camera lens, the double light path doubly telecentric camera lens possesses two peacekeepings three
Tie up the ability of acquisition of information.
The technical solution adopted in the present invention is：The double light path doubly telecentric camera lens is located at the surface of sample, sample
Line laser is provided with above side, the double light path doubly telecentric camera lens includes the lens front group set gradually from bottom to up, light splitting
Prism, diaphragm one, lens rear group one, vertical image planes, the positive side of the Amici prism are provided with lens rear group two, and described point
Diaphragm two is provided between light prism and the lens rear group two, the two positive side of lens rear group is tiltedly installed with inclination picture
Face, vertical object plane and the inclination object plane to be coincided with the line laser structured light face are provided with immediately below the lens front group.
Further, after vertical object plane, the lens front group, the Amici prism, the diaphragm one, the object lens
Group one, the vertical image planes composition light path one, it is described into a pair of planar imagings perpendicular to optical axis of light path, the inclination object plane,
The lens front group, the Amici prism, the diaphragm two, the lens rear group two, Tilted camera composition light path two, institute
Two pairs of planar imagings intersected with inclined light shaft of light path are stated, the light path one and the light path two share the lens front group, warp
Separated after crossing the Amici prism.
Further, the lens front group includes the first lens, the second lens, the 3rd saturating along the light direction of propagation successively
Mirror, the 4th lens, the 5th lens, the 6th lens, the lens rear group one include the 7th lens, the successively along the light direction of propagation
Eight lens, the 9th lens, the tenth lens, the lens rear group two include the 11st lens, the tenth successively along the light direction of propagation
Two lens, the 13rd lens, the 14th lens, first lens are the sphere positive lens one for being convex to the object plane, described
Two lens are the sphere positive lens two for being convex to the object plane, and the 3rd lens are plano-concave sphere negative lens three, and the described 4th is saturating
Mirror is convex flat sphere positive lens four, and the 5th lens are the sphere negative lens five for being convex to object plane, and the 6th lens are plano-concave
Sphere negative lens six, the 7th lens are biconvex spherical lens, and the 8th lens are concave-concave sphere negative lens, the described 9th
Lens are biconvex sphere positive lens, and the tenth lens are the sphere positive lens for being convex to object plane, and the 11st lens are biconvex
Spherical lens, the 12nd lens are concave-concave sphere negative lens, and the 13rd lens are biconvex sphere positive lens, described
14 lens are the sphere positive lens for being convex to object plane.
Further, first lens include the first face and the second face, and second lens include the 3rd face and the 4th
Face, the 3rd lens include the 5th face and the 6th face, and the 4th lens include the 7th face and octahedral, the 5th lens
Including the 9th face and the tenth face, the 6th lens include the tenth one side and the 12nd face, and the 7th lens include the 13rd
Face and the tenth four sides, the 8th lens include the 15th face and the 16th face, and the 9th lens include the 17th face and the
Ten octahedrals, the tenth lens include the 19th face and the 20th face, and the 11st lens include the 20th one side and second
12 faces, the 12nd lens include the 23rd face and the 20th four sides, and the 13rd lens include the 25th face
With the 26th face, the 14th lens include the 27th face and the 20th octahedral, first face, the 3rd face,
7th face, the 9th face, the 13rd face, the tenth four sides, the 17th face, the tenth octahedral, institute
State the 19th face, the 20th one side, the 22nd face, the 25th face, the 26th face and described
27th face is convex surface, second face, the fourth face, the 6th face, the tenth face, the 12nd face,
15th face, the 16th face, the 20th face, the 23rd face, the 20th four sides and described the
20 octahedrals are concave surface, and the 5th face, the octahedral and the tenth one side are plane.
Further, first face to the radius of curvature of the 20th octahedral is followed successively by 156.00 ± 5%,
2347.786 ± 5%, 108.092 ± 5%, 395.657 ± 5%, it is infinitely great, 104.473 ± 5%, 73.604 ± 5%, it is infinitely great,
25.742 ± 5%, 14.658 ± 5%, it is infinitely great, 18.522 ± 5%, 17.596 ± 5%, -35.168 ± 5%, -8.187 ± 5%,
16.838 ± 5%, 26.858 ± 5%, -9.875 ± 5%, 16.603 ± 5%, 109.154 ± 5%, 17.596 ± 5%, -35.168 ±
5%, -8.187 ± 5%, 16.838 ± 5%, 26.858 ± 5%, -9.875 ± 5%, 16.603 ± 5%, 109.154 ± 5%, its unit
It is millimeter.
Further, the center thickness of first lens to the 14th lens is 24 ± 5%, 23 ± 5%, 5 successively
± 5%, 10 ± 5%, 3 ± 5%, 2 ± 5%, 2 ± 5%, 1 ± 5%, 4.1 ± 5%, 2.6 ± 5%, 2 ± 5%, 1 ± 5%, 4.1 ± 5%, 2.6
± 5%, its unit is millimeter.
Further, the lens front group to distance of the airspace of the Amici prism on optical axis for 20.34 ±
5%mm, the distance of the Amici prism to the diaphragm one and the diaphragm two is 2 ± 5%mm, and the diaphragm one arrives the thing
The distance of group one and the distance of the diaphragm two to the lens rear group two are 3 ± 5%mm after mirror, first lens to institute
It is 0.2 ± 5%mm to state distance of the airspace of the second lens on optical axis, sky of second lens to the 3rd lens
The distance that gas is spaced on optical axis is 7.2 ± 5%mm, and distance of the 3rd lens to the airspace of the 4th lens on optical axis is
82.61 ± 5%mm, distance of the 4th lens to the airspace of the 5th lens on optical axis are 10.34 ± 5%mm, the 5th lens
It is 23.52 ± 5%mm to distance of the airspace of the 6th lens on optical axis, the 7th lens to the 8th lens
Distance of the airspace on optical axis is 6.96 ± 5%mm, and the 8th lens are to the airspace of the 9th lens in optical axis
On distance be 1.14 ± 5%mm, distance of the 9th lens to the airspace of the tenth lens on optical axis is 7.0
± 5%mm, distance of the 11st lens to the airspace of the 12nd lens on optical axis is 6.96 ± 5%mm, institute
It is 1.14 ± 5%mm to state distance of the 12nd lens to the airspace of the 13rd lens on optical axis, and the described 13rd is saturating
Distance of the mirror to the airspace of the 14th lens on optical axis is 7.0 ± 5%mm.
Further, 82.9 ° of 25 ° -45 ° of the angle for tilting object plane and optical axis, Tilted camera and optical axis included angle -
86.68°。
Further, each lens material refractive index of the lens front group and Abbe number are from first lens to the described 6th
Lens are successively：1.77/49.6 ± 5%, 1.77/49.6 ± 5%, 1.85/23.8 ± 5%, 1.74/49.2 ± 5%, 1.62/56.7
± 5%, 1.50/81.6 ± 5%；One each lens material of lens rear group is successively from the 7th lens to the tenth lens：1.74/
52.6 ± 5%, 1.74/27.8 ± 5%, 1.62/57.0 ± 5%, 1.56/60.8 ± 5%；Two each lens material of lens rear group from
11st lens are successively to the 14th lens：1.74/52.6 ± 5%, 1.74/27.8 ± 5%, 1.62/57.0 ± 5%, 1.56/
60.8±5%；The Amici prism Refractive Index of Material and Abbe number are 1.65/33.8 ± 5%.
Further, the operating distance of the double light path doubly telecentric camera lens is 100mm, Entry pupil diameters 150mm, operating wave
Section is 450-750nm.
The beneficial effects of the invention are as follows：Because the double light path doubly telecentric camera lens is located at the surface of sample, the side of sample
Top is provided with line laser, and the double light path doubly telecentric camera lens includes the lens front group set gradually from bottom to up, light splitting rib
Mirror, diaphragm one, lens rear group one, vertical image planes, the positive side of the Amici prism are provided with lens rear group two, and the light splitting
Diaphragm two is provided between prism and the lens rear group two, the two positive side of lens rear group is tiltedly installed with Tilted camera,
Vertical object plane and the inclination object plane to be coincided with the line laser structured light face are provided with immediately below the lens front group, so institute
Stating double light path doubly telecentric camera lens to vertical optical axis plane and can favour the plane of optical axis and be imaged respectively, have high-resolution,
The characteristics of low distortion, low telecentricity are spent.
It is the vertical object plane, the lens front group, the Amici prism, the diaphragm one, the lens rear group one, described
Vertical image planes composition light path one, it is described into a pair of planar imagings perpendicular to optical axis of light path, before the inclination object plane, the object lens
Group, the Amici prism, the diaphragm two, the lens rear group two, Tilted camera composition light path two, the light path two are right
The planar imaging intersected with inclined light shaft, the light path one and the light path two share the lens front group, by the light splitting
Separated after prism, so the present invention uses the design of double light path, the vertical plane and the clinoplain are carried out respectively into
Picture, the line laser of arranging in pairs or groups can realize the measurement of two and three dimensions information, reduce vision-based detection and image measuring system
Complexity, improve measuring speed.
Brief description of the drawings
Fig. 1 is that double light path doubly telecentric camera lens coordinates line laser to carry out measuring three-dimensional profile schematic diagram；
Fig. 2 is the internal structure schematic diagram of double light path doubly telecentric camera lens；
Fig. 3 is lens front group structural representation；
The structural representation of Fig. 4 lens rear groups one；
The structural representation of Fig. 5 lens rear groups two；
Fig. 6 is the optics figure of optical lens preferred embodiment of light path one；
Fig. 7 is the optics figure of optical lens preferred embodiment of light path two；
Fig. 8 is the modulation transfer function figure of light path one；
Fig. 9 is the modulation transfer function figure of light path two；
Figure 10 is the astigmatism and curvature of field figure of light path one；
Figure 11 is the astigmatism and curvature of field figure of light path two；
Figure 12 is the distortion figure of light path one；
Figure 13 is the distortion figure of light path two.
Embodiment
As shown in figure 1 to figure 13, in the present embodiment, the double light path doubly telecentric camera lens 1 is located at the surface of sample 2,
Line laser 3 is provided with above the side of sample 2, the double light path doubly telecentric camera lens 1 includes the object lens set gradually from bottom to up
Preceding group 4, Amici prism 5, diaphragm 1, lens rear group 1, vertical image planes 8, the positive side of the Amici prism 5 is provided with object lens
29 are organized afterwards, and diaphragm 2 10 is provided between the Amici prism 5 and the lens rear group 29, and the lens rear group 29 is just
Side is tiltedly installed with Tilted camera 11, the underface of the lens front group 4 be provided with vertical object plane 12 and with the line laser 3
The inclination object plane 13 that scanning plane coincides, the scan line of the profile of response sample 2 is in the inclination object plane 13, by profile
The measurement of line and corresponding calculate can rebuild object three-dimensional contour outline, and specific calculating process is the technology of relative maturity,
Not in the range of the present invention illustrates；The vertical object plane 12, the lens front group 4, the Amici prism 5, the diaphragm 1,
The lens rear group 1, the vertical image planes 8 form light path one, and the light path one be in " one " font, described vertical into a pair of light path
Directly it is imaged in the vertical object plane 12 of optical axis, the vertical image planes 8 are vertically and optical axis；The inclination object plane 13, the object lens
Preceding group 4, the Amici prism 5, the diaphragm 2 10, the lens rear group 29, the Tilted camera 11 form light path two, institute
State that light path two is L-shaped, the inclination object plane 13 that two pairs of the light path intersects with inclined light shaft is imaged, the Tilted camera 11 and light
Axle, which tilts, to intersect, and the angle for tilting object plane 13 and optical axis is 45 °, and the Tilted camera 11 is with optical axis included angle
86.68°；The light path one and the light path two share the lens front group 4, are separated after the Amici prism 5, the light
Worked when light path two is different described in Lu Yihe, when described a pair of vertical object planes 12 of light path are imaged, the light path two does not work, described
When light path two is imaged to the inclination object plane 13, the light path one does not work.
In the present embodiment, the lens front group 4 includes the first lens 41, the second lens successively along the light direction of propagation
42nd, the 3rd lens 43, the 4th lens 44, the 5th lens 45, the 6th lens 46, the lens rear group 1 is along the light direction of propagation
Include the 7th lens 71, the 8th lens 72, the 9th lens 73, the tenth lens 74 successively, the lens rear group 29 is propagated along light
Direction includes the 11st lens 91, the 12nd lens 92, the 13rd lens 93, the 14th lens 94, first lens successively
41 be to be convex to the sphere positive lens one of the object plane, and second lens 42 are the sphere positive lens two for being convex to the object plane, institute
It is plano-concave sphere negative lens three to state the 3rd lens 43, and the 4th lens 44 are convex flat sphere positive lens four, the 5th lens
45 be the sphere negative lens five for being convex to object plane, and the 6th lens 46 are plano-concave sphere negative lens six, and the 7th lens 71 are
Biconvex spherical lens, the 8th lens 72 are concave-concave sphere negative lens, and the 9th lens 73 are biconvex sphere positive lens, institute
It is to be convex to the sphere positive lens of object plane to state the tenth lens 74, and the 11st lens 91 are biconvex spherical lens, the described 12nd
Lens 92 are concave-concave sphere negative lens, and the 13rd lens 93 are biconvex sphere positive lens, and the 14th lens 94 are convex
To the sphere positive lens of object plane.
In the present embodiment, first lens 41 include the first face and the second face, and second lens 42 include the 3rd
Face and fourth face, the 3rd lens 43 include the 5th face and the 6th face, and the 4th lens 44 include the 7th face and octahedral,
5th lens 45 include the 9th face and the tenth face, and the 6th lens 46 include the tenth one side and the 12nd face, and described
Seven lens 71 include the 13rd face and the tenth four sides, and the 8th lens 72 include the 15th face and the 16th face, and the described 9th
Lens 73 include the 17th face and the tenth octahedral, and the tenth lens 74 include the 19th face and the 20th face, and the described 11st
Lens 91 include the 20th one side and the 22nd face, and the 12nd lens 92 include the 23rd face and the 20th four sides,
13rd lens 93 include the 25th face and the 26th face, and the 14th lens 94 include the 27th face and the
20 octahedrals, first face, the 3rd face, the 7th face, the 9th face, the 13rd face, the described 14th
It is face, the 17th face, the tenth octahedral, the 19th face, the 20th one side, the 22nd face, described
25th face, the 26th face and the 27th face are convex surface, second face, the fourth face, described
6th face, the tenth face, the 12nd face, the 15th face, the 16th face, the 20th face, described
23 faces, the 20th four sides and the 20th octahedral are concave surface, the 5th face, the octahedral and described the
Ten one sides are plane.
In the present embodiment, first face to the radius of curvature of the 20th octahedral is followed successively by 156.00 ± 5%,
2347.786 ± 5%, 108.092 ± 5%, 395.657 ± 5%, it is infinitely great, 104.473 ± 5%, 73.604 ± 5%, it is infinitely great,
25.742 ± 5%, 14.658 ± 5%, it is infinitely great, 18.522 ± 5%, 17.596 ± 5%, -35.168 ± 5%, -8.187 ± 5%,
16.838 ± 5%, 26.858 ± 5%, -9.875 ± 5%, 16.603 ± 5%, 109.154 ± 5%, 17.596 ± 5%, -35.168 ±
5%, -8.187 ± 5%, 16.838 ± 5%, 26.858 ± 5%, -9.875 ± 5%, 16.603 ± 5%, 109.154 ± 5%, its unit
It is millimeter, wherein the meaning first curvature radius that first curvature radius is 156.00 ± 5% is 156-156
× 5% in the range of 156+156 × 5%, i.e., described first curvature radius is 155.22-156.78mm.Other curvature half
Footpath algorithm is as consistent such as the first curvature radius algorithm.
In the present embodiment, first lens 41 to the center thickness of the 14th lens 94 is 24 ± 5% successively,
23 ± 5%, 5 ± 5%, 10 ± 5%, 3 ± 5%, 2 ± 5%, 2 ± 5%, 1 ± 5%, 4.1 ± 5%, 2.6 ± 5%, 2 ± 5%, 1 ± 5%, 4.1
± 5%, 2.6 ± 5%, its unit is millimeter.
In the present embodiment, distance of the lens front group 4 to the airspace of the Amici prism 5 on optical axis is
20.34 ± 5%mm, the distance of the Amici prism 5 to the diaphragm 1 and the diaphragm 2 10 is 2 ± 5%mm, the light
The distance and the distance of the diaphragm 2 10 to the lens rear group 29 of door screen 1 to the lens rear group 1 are 3 ± 5%mm,
Distance of first lens 41 to the airspace of second lens 42 on optical axis is 0.2 ± 5%mm, and described second is saturating
Distance of the mirror 42 to the airspace of the 3rd lens 43 on optical axis is 7.2 ± 5%mm, the 3rd lens 43 to the 4th lens
Distance of 44 airspace on optical axis is 82.61 ± 5%mm, and the 4th lens 44 are to the airspace of the 5th lens 45 in light
Distance on axle is 10.34 ± 5%mm, and distance of the 5th lens 45 to the airspace of the 6th lens 46 on optical axis is 23.52
± 5%mm, distance of the 7th lens 71 to the airspace of the 8th lens 72 on optical axis is 6.96 ± 5%mm, institute
It is 1.14 ± 5%mm to state distance of the 8th lens 72 to the airspace of the 9th lens 73 on optical axis, the 9th lens
73 distance to the airspace of the tenth lens 74 on optical axis is 7.0 ± 5%mm, and the 11st lens 91 are described in
Distance of the airspace of 12nd lens 92 on optical axis is 6.96 ± 5%mm, and the 12nd lens 92 arrive the described 13rd
Distance of the airspace of lens 93 on optical axis is 1.14 ± 5%mm, and the 13rd lens 93 arrive the 14th lens 94
Distance of the airspace on optical axis be 7.0 ± 5%mm.
In the present embodiment, each lens material refractive index of the lens front group 4 and Abbe number from first lens 41 to
6th lens 46 are successively：（1.77/49.6）± 5%,（1.77/49.6）± 5%,（1.85/23.8）± 5%,（1.74/
49.2）± 5%,（1.62/56.7）± 5%,（1.50/81.6）±5%；One 7 each lens material of lens rear group is from the 7th lens
71 to the tenth lens 74 are successively：（1.74/52.6）± 5%,（1.74/27.8）± 5%,（1.62/57）± 5%,（1.56/
60.8）±5%；29 each lens material of lens rear group is successively from the 11st lens 91 to the 14th lens 94：（1.74/
52.6）± 5%,（1.74/27.8）± 5%,（1.62/57）± 5%,（1.56/60.8）±5%；The material of Amici prism 5 refraction
Rate and Abbe number are（1.65/33.8）±5%.
In the present embodiment, the operating distance of the double light path doubly telecentric camera lens 1 is 100mm, Entry pupil diameters 150mm,
Service band is 450-750nm.
Optics figure of optical lens preferred embodiment as shown in Figure 6 and Figure 7, wherein DBJ represent true field, and IMA represents image space, unit
All it is millimeter, AIRY RADIUS represent Airy disc radius, and RMS RADIUS represent disc of confusion root mean square radii, and unit is all micro-
Rice.As can be seen from Figures 6 and 7, the Airy disc radius 3.1um of the light path one, disc of confusion root mean square radii central vision
0.91um, peripheral field 2.94um, " the Airy disc radius 3.1um of the light path two, disc of confusion root mean square radii central vision
0.91um, peripheral field 2.78um, both less than Airy disc radius, on axle and off-axis point encircled energy and aberration correction all very
It is good, reach desired resolution.
Modulation transfer function as shown in Figure 8 and Figure 9, wherein abscissa are resolution ratio, unit be line it is right/millimeter, indulge
Coordinate is contrast, and codomain 0-1, TS represent the meridian and sagitta of arc component of MTF under different visual fields.Each visual field in Fig. 8 and Fig. 9
MTF average values the line of resolution ratio 200 it is right/millimeter at contrast be more than 0.3, and whole MTF curve is compact, it can be seen that camera lens
With very high resolution ratio.
The curvature of field as shown in Figure 10 and Figure 11 and astigmatism figure, ordinate are visual field, and abscissa is that unit is millimeter.
Distortion figure as shown in Figure 12 and Figure 13, ordinate are visual field, and abscissa is distortion value, is found out from Figure 12 and Figure 13
Distortion value is less than 0.03% in the full filed of the light path one of camera lens, and distortion is less than 0.05% in the full filed of light path two, camera lens
With low-down distortion.
In summary, the double light path doubly telecentric camera lens that designs of the present invention to vertical optical axis plane and can favour optical axis
Plane is imaged respectively, has the characteristics of high-resolution, low distortion, low telecentricity are spent.
The present invention is applied to the technical field of optical lens.
Although embodiments of the invention are described with practical solution, the limit to implication of the present invention is not formed
System, for those skilled in the art, all it is according to modification of this specification to its embodiment and with the combination of other schemes
Obviously.
Claims (10)
- A kind of 1. double light path doubly telecentric camera lens, it is characterised in that：The double light path doubly telecentric camera lens（1）Positioned at sample（2）Just Top, sample（2）Side above be provided with line laser（3）, the double light path doubly telecentric camera lens（1）Include from bottom to up successively The lens front group of setting（4）, Amici prism（5）, diaphragm one（6）, lens rear group one（7）, vertical image planes（8）, the light splitting rib Mirror（5）Positive side be provided with lens rear group two（9）, and the Amici prism（5）With the lens rear group two（9）Between set There is diaphragm two（10）, the lens rear group two（9）Positive side is tiltedly installed with Tilted camera（11）, the lens front group（4）'s Underface is provided with vertical object plane（12）With with the line laser（3）The inclination object plane that scanning plane coincides（13）.
- A kind of 2. double light path doubly telecentric camera lens according to claim 1, it is characterised in that：The vertical object plane（12）, institute State lens front group（4）, the Amici prism（5）, the diaphragm one（6）, the lens rear group one（7）, the vertical image planes（8） Light path one is formed, it is described into a pair of planar imagings perpendicular to optical axis of light path, the inclination object plane（13）, the lens front group （4）, the Amici prism（5）, the diaphragm two（10）, the lens rear group two（9）, the Tilted camera（11）Form light path Two, described two pairs of planar imagings intersected with inclined light shaft of light path, before the light path one and the light path two share the object lens Group（4）, by the Amici prism（5）Separate afterwards.
- A kind of 3. double light path doubly telecentric camera lens according to claim 1, it is characterised in that：The lens front group（4）Along light The line direction of propagation includes the first lens successively（41）, the second lens（42）, the 3rd lens（43）, the 4th lens（44）, it is the 5th saturating Mirror（45）, the 6th lens（46）, the lens rear group one（7）Include the 7th lens successively along the light direction of propagation（71）, the 8th Lens（72）, the 9th lens（73）, the tenth lens（74）, the lens rear group two（9）Include the successively along the light direction of propagation 11 lens（91）, the 12nd lens（92）, the 13rd lens（93）, the 14th lens（94）, first lens（41）For It is convex to the sphere positive lens one of the object plane, second lens（42）It is described to be convex to the sphere positive lens two of the object plane 3rd lens（43）For plano-concave sphere negative lens three, the 4th lens（44）It is saturating for convex flat sphere positive lens four, the described 5th Mirror（45）To be convex to the sphere negative lens five of object plane, the 6th lens（46）It is saturating for plano-concave sphere negative lens six, the described 7th Mirror（71）For biconvex spherical lens, the 8th lens（72）For concave-concave sphere negative lens, the 9th lens（73）For biconvex Sphere positive lens, the tenth lens（74）To be convex to the sphere positive lens of object plane, the 11st lens（91）For biconvex ball Face lens, the 12nd lens（92）For concave-concave sphere negative lens, the 13rd lens（93）For biconvex sphere positive lens, 14th lens（94）To be convex to the sphere positive lens of object plane.
- A kind of 4. double light path doubly telecentric camera lens according to claim 3, it is characterised in that：First lens（41）Including First face and the second face, second lens（42）Including the 3rd face and fourth face, the 3rd lens（43）Including the 5th face With the 6th face, the 4th lens（44）Including the 7th face and octahedral, the 5th lens（45）Including the 9th face and the tenth Face, the 6th lens（46）Including the tenth one side and the 12nd face, the 7th lens（71）Including the 13rd face and the tenth On four sides, the 8th lens（72）Including the 15th face and the 16th face, the 9th lens（73）Including the 17th face and Ten octahedrals, the tenth lens（74）Including the 19th face and the 20th face, the 11st lens（91）Including the 21st Face and the 22nd face, the 12nd lens（92）Including the 23rd face and the 20th four sides, the 13rd lens （93）Including the 25th face and the 26th face, the 14th lens（94）Including the 27th face and the 20th octahedral, First face, the 3rd face, the 7th face, the 9th face, the 13rd face, the tenth four sides, described the 17 faces, the tenth octahedral, the 19th face, the 20th one side, the 22nd face, the described 25th Face, the 26th face and the 27th face are convex surface, second face, the fourth face, the 6th face, institute State the tenth face, the 12nd face, the 15th face, the 16th face, the 20th face, the 23rd face, 20th four sides and the 20th octahedral are concave surface, and the 5th face, the octahedral and the tenth one side are For plane.
- A kind of 5. double light path doubly telecentric camera lens according to claim 4, it is characterised in that：First face is to described second The radius of curvature of ten octahedrals is followed successively by 156.00 ± 5%, 2347.786 ± 5%, 108.092 ± 5%, 395.657 ± 5%, infinitely great, 104.473 ± 5%, 73.604 ± 5%, it is infinitely great, 25.742 ± 5%, 14.658 ± 5%, it is infinitely great, 18.522 ± 5%, 17.596 ± 5%, -35.168 ± 5%, -8.187 ± 5%, 16.838 ± 5%, 26.858 ± 5%, -9.875 ± 5%, 16.603 ± 5%, 109.154 ± 5%, 17.596 ± 5%, -35.168 ± 5%, -8.187 ± 5%, 16.838 ± 5%, 26.858 ± 5%, -9.875 ± 5%, 16.603 ± 5%, 109.154 ± 5%, its unit is millimeter.
- A kind of 6. double light path doubly telecentric camera lens according to claim 3, it is characterised in that：First lens（41）To institute State the 14th lens（94）Center thickness be 24 ± 5%, 23 ± 5%, 5 ± 5%, 10 ± 5%, 3 ± 5%, 2 ± 5%, 2 successively ± 5%, 1 ± 5%, 4.1 ± 5%, 2.6 ± 5%, 2 ± 5%, 1 ± 5%, 4.1 ± 5%, 2.6 ± 5%, its unit is millimeter.
- A kind of 7. double light path doubly telecentric camera lens according to claim 3, it is characterised in that：The lens front group（4）To institute State Amici prism（5）Distance of the airspace on optical axis be 20.34 ± 5%mm, the Amici prism（5）To the diaphragm One（6）With the diaphragm two（10）Distance be 2 ± 5%mm, the diaphragm one（6）To the lens rear group one（7）Distance With the diaphragm two（10）To the lens rear group two（9）Distance be 3 ± 5%mm, first lens（41）To described Two lens（42）Distance of the airspace on optical axis be 0.2 ± 5%mm, second lens（42）To the 3rd lens （43）Distance of the airspace on optical axis be 7.2 ± 5%mm, the 3rd lens（43）To the 4th lens（44）Airspace Distance on optical axis is 82.61 ± 5%mm, the 4th lens（44）To the 5th lens（45）Airspace on optical axis away from From for 10.34 ± 5%mm, the 5th lens（45）To the 6th lens（46）Distance of the airspace on optical axis be 23.52 ± 5% Mm, the 7th lens（71）To the 8th lens（72）Distance of the airspace on optical axis be 6.96 ± 5%mm, institute State the 8th lens（72）To the 9th lens（73）Distance of the airspace on optical axis be 1.14 ± 5%mm, the described 9th Lens（73）To the tenth lens（74）Distance of the airspace on optical axis be 7.0 ± 5%mm, the 11st lens （91）To the 12nd lens（92）Distance of the airspace on optical axis be 6.96 ± 5%mm, the 12nd lens （92）To the 13rd lens（93）Distance of the airspace on optical axis be 1.14 ± 5%mm, the 13rd lens （93）To the 14th lens（94）Distance of the airspace on optical axis be 7.0 ± 5%mm.
- A kind of 8. double light path doubly telecentric camera lens according to claim 1, it is characterised in that：The inclination object plane（13）With light 25 ° -45 ° of the angle of axle, the Tilted camera（11）With 82.9 ° -86.68 ° of optical axis included angle.
- A kind of 9. double light path doubly telecentric camera lens according to claims 3, it is characterised in that：The lens front group（4）Respectively Lens material refractive index and Abbe number are from first lens（41）To the 6th lens（46）It is successively（1.77/49.6）± 5%,（1.77/49.6）± 5%,（1.85/23.8）± 5%,（1.74/49.2）± 5%,（1.62/56.7）± 5%,（1.50/ 81.6）±5%；The lens rear group one（7）Each lens material is from the 7th lens（71）To the tenth lens（74）It is successively（1.74/ 52.6）± 5%,（1.74/27.8）± 5%,（1.62/57）± 5%,（1.56/60.8）±5%；The lens rear group two（9）It is each Mirror material is from the 11st lens（91）To the 14th lens（94）It is successively：（1.74/52.6）± 5%,（1.74/27.8）± 5%, （1.62/57）± 5%,（1.56/60.8）±5%；The Amici prism（5）Refractive Index of Material and Abbe number are（1.65/33.8） ±5%。
- A kind of 10. double light path doubly telecentric camera lens according to claim 1, it is characterised in that：The double light path doubly telecentric mirror Head（1）Operating distance be 100mm, Entry pupil diameters 150mm, service band 450-750nm.
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| CN109307927A (en) * | 2018-11-16 | 2019-02-05 | 珠海博明软件有限公司 | A kind of double-view field doubly telecentric camera lens of built-in coaxial illumination |
| CN109613689A (en) * | 2018-12-24 | 2019-04-12 | 珠海博明软件有限公司 | A kind of telecentricity source of parallel light |
| TWI824606B (en) * | 2021-12-29 | 2023-12-01 | 新加坡商Ｗｅｏ Ｉｐ有限公司 | Lens, structured light projection device and 3d measurement device |
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|---|---|
| CN107561671B (en) | 2023-10-20 |
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