CN109270669A - Telecentric lens systems - Google Patents
Telecentric lens systems Download PDFInfo
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- CN109270669A CN109270669A CN201710580031.2A CN201710580031A CN109270669A CN 109270669 A CN109270669 A CN 109270669A CN 201710580031 A CN201710580031 A CN 201710580031A CN 109270669 A CN109270669 A CN 109270669A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/22—Telecentric objectives or lens systems
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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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
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Abstract
A kind of telecentric lens systems, its maximum image height is set as Max IMH, and sequentially include by projection side to image source: one first lens, the second lens, the third lens, the 4th lens, aperture, the 5th lens, the 6th lens, the 7th lens, the 8th lens and the 9th lens, first lens and the second lens are all negative lens, the first lens or the second lens are glass aspheric lenses again, the effective radius of the glass aspheric lenses is set as SD, and meets following condition: 1.3 < SD/Max IMH < 2.4.The present invention by the effective radius and maximum image height of glass aspheric lenses matching, in certain matching range, also can weigh and consider in order to uphold justice between projection imaging quality and manufacturing cost, volume, cooperation replaces the common plastic aspheric lens of script camera lens with glass aspheric lenses, also the reliability of projection imaging quality is promoted, therefore, it is suitable for high-brightness projection machine.
Description
Technical field
The present invention is a kind of related telecentric lens systems, espespecially a kind of matching by effective radius and maximum image height,
In certain matching range, it can also weigh and consider in order to uphold justice between projection imaging quality and manufacturing cost, volume, cooperation is taken with glass aspheric lenses
For plastic aspheric lens, the reliability of projection imaging quality is also promoted.
Background technique
Due to optics scientific and technological progress, so that projector is can be used not only in office and carry out bulletin, be also gradually widely used in house
Front yard carries out ornamental video signal, program, and therefore, dealer is also directed to the mirror of reduced projection machine to allow projector to be easy to use and carry
The volume of head is researched and developed, meanwhile, the volume of the camera lens can also reduce the excessively high disadvantage of manufacturing cost when reducing, and then should
The volume-diminished of the camera lens of projector, makes the light-weight of projector, also meets the miniaturization of projector desired by consumer, meanwhile,
Also meeting dealer reduces manufacturing cost, but influences projection imaging quality.
Secondary person, projector develop toward high brightness direction, and relatively, generated temperature is higher in operation, in addition originally
The common plastic aspheric lens of camera lens also result in the reliability risk of projection imaging quality.But it looks into, the camera lens of the projector
Projection imaging quality and manufacturing cost, volume depend on the optical design of several lens arrangements, and such as how several lens arrangements
Optical design weigh and consider in order to uphold justice out between the projection imaging quality and manufacturing cost, volume of the camera lens of the projector, and promoted project into
The reliability of image quality amount is also the project of the invention to be solved.
Summary of the invention
Technical problem underlying to be solved by this invention is, overcomes drawbacks described above of the existing technology, and provides one
Kind telecentric lens systems can also be weighed in certain matching range with the matched technical characteristic of effective radius and maximum image height
The effect of between flat projection imaging quality and manufacturing cost, volume；It replaces plastic aspheric lens with glass aspheric lenses,
Also the reliability of projection imaging quality is promoted.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of telecentric lens systems, maximum image height is set as Max IMH, and is sequentially wrapped by projection side to image source
Contain: one first lens, the second lens, the third lens, the 4th lens, aperture, the 5th lens, the 6th lens, the 7th lens, the 8th
Lens and the 9th lens, first lens and second lens are all negative lens, and first lens or second lens are glass
Glass non-spherical lens, the effective radius of the glass aspheric lenses are set as SD, and meet following condition: 1.3 < SD/MaxIMH
< 2.4.
According to feature is before taken off, the coke ratio of the aperture is set as 1.7~2.1.
According to feature is before taken off, the 5th lens, the 6th lens, the 7th lens, the 8th lens and the 9th lens are with the 5th
Lens, the 6th lens, one balsaming lens of the 7th lens forming, and the 5th lens, the 6th lens, the 7th lens, the 8th lens
And the 9th include at least a glass aspheric lenses, two high dispersing lens in lens, the Abbe number of the high dispersing lens is set
It is set to Vd, wherein the Vd < 30.
According to before taking off feature, first lens, the second lens settings burnt group in a pair；It is fixed that the third lens are set to one
Group；4th lens settings are at one first zoom group；The aperture, the 5th lens, the 6th lens, the 7th lens, the 8th lens,
Nine lens settings interlock the first zoom group, the second zoom group and carry out zoom and focusing group movement at one second zoom group
It focuses.
According to before taking off feature, which is concave-convex lens and its convex surface towards projection side；4th lens are bumps
Lens and its convex surface are towards projection side；5th lens are concave-convex lens and its concave surface towards projection side；6th lens are double
Concavees lens；7th lens are biconvex lens；8th lens are biconvex lens；9th lens are plano-convex lens and its is flat
Facing towards projection side.
According to before taking off feature, which is concave-convex lens and its concave surface towards projection side；4th lens are bumps
Lens and its convex surface are towards projection side；5th lens are biconvex lens；6th lens are biconcave lens；7th lens are
Biconvex lens；8th lens are biconvex lens；9th lens are biconvex lens.
According to feature is before taken off, the negative lens of second lens is biconcave lens；The third lens be biconvex lens, and with this
Second lens forming, one compound lens；4th lens are concave-convex lens and its convex surface towards projection side；5th lens are recessed
Convex lens and its concave surface are towards projection side；6th lens are biconcave lens；7th lens are biconvex lens；8th lens
For biconvex lens；9th lens are biconvex lens.
According to feature is before taken off, further includes an optical element, be located at the rear of the 9th lens.
Further include the smooth image device of a penetration according to before taking off feature, be located at the optical element and the 9th lens it
Between.
By technological means is above taken off, the present invention is with effective radius and the matched technical characteristic of maximum image height, at certain
With in range, it can also weigh and consider in order to uphold justice between projection imaging quality and manufacturing cost, volume, cooperation is replaced with the glass aspheric lenses moulds
Expect non-spherical lens, also promote the reliability of projection imaging quality, therefore, is suitable for high-brightness projection machine.
The invention has the advantages that it is centainly being matched with effective radius and the matched technical characteristic of maximum image height
In range, the effect of can also weighing and considering in order to uphold justice between projection imaging quality and manufacturing cost, volume；It is replaced with glass aspheric lenses moulds
Expect non-spherical lens, also promotes the reliability of projection imaging quality.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Figure 1A is the lens configuration schematic diagram of first embodiment of the invention.
Figure 1B is that first embodiment of the invention has as radius and maximum image height schematic diagram.
Fig. 1 C is the light path schematic diagram of first embodiment of the invention.
Fig. 1 D is focusing and the zoom schematic diagram of first embodiment of the invention.
Fig. 1 E is the transverse light rays sector diagram of first embodiment of the invention.
Fig. 1 F is the curvature of field and distortion figure of first embodiment of the invention.
Fig. 1 G is the lateral chromatic aberration figure of first embodiment of the invention.
Fig. 1 H is the longitudinal aberration diagram of first embodiment of the invention.
Fig. 2A is the lens configuration schematic diagram of second embodiment of the invention.
Fig. 2 B is that second embodiment of the invention has as radius and maximum image height schematic diagram.
Fig. 2 C is the light path schematic diagram of second embodiment of the invention.
Fig. 2 D is the transverse light rays sector diagram of second embodiment of the invention.
Fig. 2 E is the curvature of field and distortion figure of second embodiment of the invention.
Fig. 2 F is the lateral chromatic aberration figure of second embodiment of the invention.
Fig. 2 G is the longitudinal aberration diagram of second embodiment of the invention.
The lens configuration schematic diagram of Fig. 3 A system third embodiment of the invention.
Fig. 3 B is that third embodiment of the invention has as radius and maximum image height schematic diagram.
Fig. 3 C is the light path schematic diagram of third embodiment of the invention.
Fig. 3 D is the transverse light rays sector diagram of third embodiment of the invention.
Fig. 3 E is the curvature of field and distortion figure of third embodiment of the invention.
Fig. 3 F is the lateral chromatic aberration figure of third embodiment of the invention.
Fig. 3 G is the longitudinal aberration diagram of third embodiment of the invention.
Figure label explanation:
10A, 10B, 10C telecentric lens systems
11 first lens
12 second lens
13 the third lens
14 the 4th lens
15 the 5th lens
16 the 6th lens
17 the 7th lens
18 the 8th lens
19 the 9th lens
20 apertures
30 optical elements
SD effective radius
Max IMH maximum image height
The smooth image device of TSP penetration
CG glass cover-plate
IMA imaging surface
FS focusing group
FX group of stability
Z1First zoom group
Z2Second zoom group
D1First movement distance
D2Second moving distance
D3Third moving distance
D44th moving distance
Specific embodiment
Firstly, please referring to shown in Figure 1A~Fig. 3 G, a kind of telecentric lens systems of the invention, maximum image height is set as
Max IMH, unit mm, and sequentially include by projection side to image source: one first lens 11, the second lens 12, third
Lens 13, the 4th lens 14, aperture 20, the 5th lens 15, the 6th lens 16, the 7th lens 17, the 8th lens 18 and the 9th are saturating
Mirror 19 is constituted, and first lens 11 and second lens 12 are all negative lens, and first lens 11 or second lens 12
For glass aspheric lenses, the effective radius of the glass aspheric lenses is set as SD, unit mm, and meets following item
Part: 1.3 < SD/Max IMH < 2.4 also maintain good projection image quality.
It holds, in the present embodiment, the coke ratio (F/#) of the aperture 20 is set as 1.7~2.1；5th lens the 15, the 6th are thoroughly
Mirror 16, the 7th lens 17, the 8th lens 18 and the 9th lens 19 are with the 5th lens 15, the 6th lens 16,17 shape of the 7th lens
At a balsaming lens, and in the 5th lens 15, the 6th lens 16, the 7th lens 17, the 8th lens 18 and the 9th lens 19 extremely
It less include a glass aspheric lenses, two high dispersing lens, the Abbe number of the high dispersing lens is set as Vd, wherein the Vd
< 30, but not limited thereto.In addition, an optical element 30, it is located at the rear of the 9th lens 19, in the present embodiment, the optics
Element 30 can be prism, one glass cover-plate of rear sequential (Cover Glass, CG) and digital micro-mirror device of the prism
The imaging surface (IMA) of (Digital Micromirror Device, DMD).
Also, listing L1R1, L1R2 in lens (Lens) is respectively first lens 11 in table one, table four and table six
Project side surface, image source side surface；L2R1, L2R2 are respectively the projection side surface of second lens 12, image source side surface；
L3R1, L3R2 are respectively the projection side surface of the third lens 13, image source side surface；L4R1, L4R2 are respectively the 4th saturating
Projection side surface, the image source side surface of mirror 14；APRETURE is aperture 20；L5R1 is the projection side table of the 5th lens 15
Face；L6R1 is the projection side surface of the 6th lens 16；L7R1, L7R2 are respectively the projection side surface of the 7th lens 17, shadow
Image source side surface；L8R1, L8R2 are respectively the projection side surface of the 8th lens 18, image source side surface；L9R1, L9R2 difference
Projection side surface, image source side surface for the 9th lens 19, and list the projection side surface of the respectively lens, image source table
The radius (Radius) in face, thickness (Thickness), Abbe number (Vd) and refractive index (Nd) parameter, cooperation table two, table five and
Table seven, listing L2R1, L2R2 in glass aspheric lenses (ASPH) is respectively the projection side surface of second lens 12, image
Source surface；L5R1, L5R2 are respectively the projection side surface of the 5th lens 15, image source side surface, and list the respectively glass
Conic, 4TH, 6TH, 8TH, 10th, 12th, 14th and 16th of non-spherical lens, in this way, which effective radius can be exported
It (SD) is 1.3 < SD/Max IMH < 2.4 with the best match range of maximum image height (Max IMH).
It is the first embodiment aspect of telecentric lens systems 10A, the Max IMH as shown in Figure 1A, Figure 1B and Fig. 1 C
It is 8.3；The negative lens of first lens 11 is meniscus；The negative lens of second lens 12 is meniscus, and is glass
Non-spherical lens and its SD are 16.5；The third lens 13 are concave-convex lens and its convex surface towards projection side；4th lens
14 is concave-convex lens and its convex surface is towards projection side；5th lens 15 is concave-convex lens and its concave surface is towards projection side, and are
Glass aspheric lenses；6th lens 16 are biconcave lens, and are high dispersing lens；7th lens 17 are biconvex lens；
8th lens 18 are biconvex lens；9th lens 19 is plano-convex lens and its flat surface is towards projection side, and are high dispersion
Lens, and cooperate and be equipped with the smooth image device of a penetration between the optical element 30 and the 9th lens 19
(Transmissive Smooth Picture Actuator, TSP), this for one can fast trace rotation glass plate dress
It sets, raising resolution ratio is synthesized by image offset, in this way, which 1080P resolution ratio can be promoted to 4K2K resolution ratio, but unlimited
Due to this.
Table one
| Lens | Radius | Thickness | Nd | Vd |
| L1R1 | 32.20 | 3.00 | 1.62 | 60.4 |
| L1R2 | 19.26 | 10.60 | ||
| L2R1 | 102.61 | 2.00 | 1.52 | 64.1 |
| L2R2 | 14.02 | D1 | ||
| L3R1 | 49.63 | 4.30 | 1.85 | 30.1 |
| L3R2 | 294.14 | D2 | ||
| L4R1 | 58.77 | 3.50 | 1.83 | 37.2 |
| L4R2 | 211.60 | D3 | ||
| Stop | INF | 5.00 | ||
| APRETURE | INF | 14.40 | ||
| L5R1 | -86.46 | 4.55 | 1.58 | 59.5 |
| L6R1 | -18.02 | 1.50 | 1.81 | 25.5 |
| L7R1 | 27.32 | 5.90 | 1.50 | 81.6 |
| L7R2 | -39.53 | 0.50 | ||
| L8R1 | 58.06 | 6.66 | 1.50 | 81.6 |
| L8R2 | -35.21 | 1.97 | ||
| L9R1 | INF | 4.05 | 1.92 | 18.9 |
| L9R2 | -54.45 | D4 |
Table two
| ASPH | L2R1 | L2R2 | L5R1 | L5R2 |
| Radius | 102.61 | 14.02 | -86.46 | -18.02 |
| Conic | -- | -0.40 | -- | -- |
| 4TH | -3.01E-06 | -3.27E-05 | -1.76E-05 | -- |
| 6TH | -1.97E-09 | -8.71E-08 | 6.55E-08 | -- |
| 8TH | 3.09E-11 | 1.23E-10 | -2.63E-09 | -- |
| 10th | -1.16E-13 | -1.53E-12 | 5.47E-11 | -- |
| 12th | 1.60E-16 | 4.53E-15 | -5.20E-13 | -- |
| 14th | -- | -1.01E-17 | 1.89E-15 | -- |
| 16th | -- | -- | -- | -- |
It holds, as shown in figure iD, first lens 11, the second lens 12 set burnt group (FS) in a pair；The third is saturating
Mirror 13 is set to a group of stability (FX), to have a first movement distance between focusing group (FS) and the group of stability (FX)
(D1)；4th lens 14 are set to one first zoom group (Z1), with the group of stability (FX) and the first zoom group (Z1) between have
There is one second moving distance (D2)；The aperture 20, the 5th lens 15, the 6th lens 16, the 7th lens 17, the 8th lens 18,
Nine lens 19 are set to one second zoom group (Z2), with the first zoom group (Z1) and the second zoom group (Z2) between have one
Third moving distance (D3) and the second zoom group (Z2) and the smooth image device of the penetration (TSP) between have one the 4th move
Dynamic distance (D4), make the first zoom group (Z1), the second zoom group (Z2) interlock progress zoom and focusing group (FS) mobile progress
Focusing, also forms a zoom telecentric lens systems, cooperation table three, and first movement distance (D is listed in zoom (Zoom)1)、
Second moving distance (D2), third moving distance (D3), the 4th moving distance (D4) wide-angle side (Wide), the end Wang Jiao (Tele)
Parameter, but not limited thereto.
Table three
| Zoom | Wide | Tele |
| D1 | 41.01 | 30.67 |
| D2 | 11.36 | 2.00 |
| D3 | 1.88 | 7.72 |
| D4 | 5.50 | 9.02 |
Therefore the first embodiment aspect of telecentric lens systems 10A, with different wave length (0.450,0.480,
0.550,0.600,0.630 micron) the transverse light rays sector diagram that simulates Fig. 1 E respectively, it is presented at same imaging surface (IMA)
Different image heights (IMH) (IMA:0.0000mm, 1.6600mm, 3.3200mm, 4.9800mm, 6.6400mm, 8.3000mm), and accord with
Number ey, py, ex, px indicates coordinate axis (maximum scale ± 20 micron)；The curvature of field and distortion figure of Fig. 1 F, maximum field of view
(Maximum Field) is 35.009 degree；The lateral chromatic aberration figure of Fig. 1 G, maximum field of view (Maximum Field) are 8.3000
Micron；The longitudinal aberration diagram of Fig. 1 H, pupil radius (Pupil Radius) are 3.3807 millimeters, it can be seen that, effective radius
(SD) meet following condition: 1.3 < SD/Max IMH < 2.4 with maximum image height (Max IMH), also maintain good projection at image quality
Amount is optimal matching range.
It is the second embodiment aspect of telecentric lens systems 10B, the Max IMH as shown in Fig. 2A, Fig. 2 B and Fig. 2 C
It is 7.803；The negative lens of first lens 11 is meniscus；The negative lens of second lens 12 is meniscus, and is glass
Glass non-spherical lens and its SD are 15；The third lens 13 are concave-convex lens and its concave surface towards projection side；4th lens
14 is concave-convex lens and its convex surface is towards projection side；5th lens 15 are biconvex lens；6th lens 16 are biconcave lens,
It is again high dispersing lens；7th lens 17 are biconvex lens, and are glass aspheric lenses；8th lens 18 are lenticular
Mirror；9th lens 19 are biconvex lens, and are high dispersing lens, and be set to one with the third lens 13, the 4th lens 14
Focus group, also forms a fixed-focus telecentric lens systems, but not limited thereto.
Table four
| Lens | Radius | Thickness | Nd | Vd |
| L1R1 | 38.02 | 3.00 | 1.77 | 49.6 |
| L1R2 | 17.52 | 8.02 | ||
| L2R1 | 30.09 | 3.00 | 1.61 | 57.9 |
| L2R2 | 8.79 | 28.85 | ||
| L3R1 | -69.65 | 8.00 | 1.80 | 35.0 |
| L3R2 | -35.69 | 0.36 | ||
| L4R1 | 29.15 | 6.40 | 1.77 | 49.6 |
| L4R2 | 134.50 | 16.24 | ||
| Stop | INF | 4.00 | ||
| APERTURE | INF | 3.66 | ||
| L5R1 | 27.04 | 4.80 | 1.44 | 95.1 |
| L6R1 | -15.71 | 1.08 | 1.85 | 23.8 |
| L7R1 | 13.08 | 5.30 | 1.51 | 63.9 |
| L7R2 | -40.94 | 3.22 | ||
| L8R1 | 234.61 | 4.92 | 1.50 | 81.6 |
| L8R2 | -23.35 | 0.95 | ||
| L9R1 | 88.45 | 4.60 | 1.92 | 18.9 |
| L9R2 | -42.73 | 4.50 |
Table five
| ASPH | L2R1 | L2R2 | L7R1 | L7R2 |
| Radius | 30.09 | 8.79 | 13.08 | -40.94 |
| Conic | -13.41 | -0.90 | -- | -- |
| 4TH | -1.11E-05 | -1.04E-04 | -- | 1.79E-05 |
| 6TH | 5.26E-09 | 1.44E-07 | -- | -2.44E-07 |
| 8TH | 6.11E-11 | -5.24E-10 | -- | 3.08E-09 |
| 10th | -4.14E-13 | -2.17E-12 | -- | -1.00E-10 |
| 12th | 4.53E-16 | 3.05E-14 | -- | 1.31E-13 |
| 14th | 7.18E-19 | -1.40E-16 | -- | 2.22E-14 |
| 16th | -- | 2.57E-19 | -- | -2.61E-16 |
Therefore the second embodiment aspect of telecentric lens systems 10B, with different wave length (0.452,0.550,0.624
Micron simulates the transverse light rays sector diagram of Fig. 2 D respectively, same imaging surface (IMA) present different image heights (IMH) (IMA:
0.0000mm, 1.5610mm, 3.1210mm, 4.6820mm, 6.2420mm, 7.8030mm), and symbol ey, py, ex, px are indicated
Reference axis (maximum scale ± 20 micron)；The curvature of field and distortion figure of Fig. 2 E, maximum field of view (Maximum Field) are 42.539
Degree；The lateral chromatic aberration figure of Fig. 2 F, maximum field of view (Maximum Field) are 7.8030 microns；The longitudinal aberration diagram of Fig. 2 G,
Pupil radius (Pupil Radius) is 2.3997 millimeters, it can be seen that, effective radius (SD) and maximum image height (Max IMH) accord with
Following condition: 1.3 < SD/Max IMH < 2.4 is closed, good projection image quality is also maintained, is optimal matching range.
It is the 3rd embodiment aspect of telecentric lens systems 10C, the Max IMH as shown in Fig. 3 A, Fig. 3 B and Fig. 3 C
It is 7.803；The negative lens of first lens 11 is meniscus, and is glass aspheric lenses and its SD is 12；This second
The negative lens of lens 12 is biconcave lens；The third lens 13 are biconvex lens, and compound with second lens 12 formation one
Mirror；4th lens 14 are concave-convex lens and its convex surface towards projection side；5th lens 15 are concave-convex lens and its concave surface court
It to projection side, and is glass aspheric lenses；6th lens 16 are biconcave lens, and are high dispersing lens；7th lens
17 be biconvex lens；8th lens 18 are biconvex lens；9th lens 19 are biconvex lens, and are high dispersing lens, and
With first lens 11, the second lens 12, the third lens 13, the 4th lens 14, aperture 20, the 5th lens 15, the 6th lens 16,
7th lens 17, the 8th lens 18 and the 9th lens 19 set burnt group in a pair, also form another fixed-focus telecentric lens systems, but
It is not limited to this.
Table six
| Lens | Radius | Thickness | Nd | Vd |
| L1R1 | 23.19 | 2.00 | 1.81 | 40.9 |
| L1R2 | 7.50 | 8.70 | ||
| L2R1 | -21.46 | 6.20 | 1.49 | 70.4 |
| L3R1 | 48.65 | 5.35 | 1.74 | 44.9 |
| L3R2 | -29.46 | 0.20 | ||
| L4R1 | 17.09 | 4.60 | 1.80 | 46.6 |
| L4R2 | 61.74 | 5.00 | ||
| Stop | INF | 6.50 | ||
| APERTURE | INF | 3.55 | ||
| L5R1 | -25.64 | 3.50 | 1.58 | 59.2 |
| L6R1 | -7.50 | 2.00 | 1.85 | 23.8 |
| L7R1 | 39.80 | 5.00 | 1.50 | 81.6 |
| L7R2 | -14.39 | 0.30 | ||
| L8R1 | 94.39 | 5.40 | 1.50 | 81.6 |
| L8R2 | -19.84 | 0.20 | ||
| L9R1 | 79.31 | 3.90 | 1.92 | 18.9 |
| L9R2 | -54.22 | 4.50 |
Table seven
| ASPH | L1R1 | L1R2 | L5R1 | L5R2 |
| Radius | 23.19 | 7.50 | -25.64 | -7.50 |
| Conic | -20.37 | -0.61 | -- | -- |
| 4TH | 3.34E-05 | -2.27E-04 | -1.08E-04 | -- |
| 6TH | -4.39E-07 | 2.55E-06 | -2.26E-05 | -- |
| 8TH | 4.56E-09 | -5.21E-08 | 5.45E-06 | -- |
| 10th | -4.23E-11 | 5.95E-10 | -6.78E-07 | -- |
| 12th | 2.67E-13 | -5.06E-12 | 4.54E-08 | -- |
| 14th | -9.45E-16 | 2.58E-14 | -1.56E-09 | -- |
| 16th | 1.41E-18 | -6.61E-17 | 2.15E-11 | -- |
Therefore the 3rd embodiment aspect of telecentric lens systems 10C, with different wave length (0.452,0.550,0.624
Micron) the transverse light rays sector diagram that simulates Fig. 3 D respectively, same imaging surface (IMA) present different image heights (IMH) (IMA:
0.0000mm, 1.5610mm, 3.1210mm, 4.6820mm, 6.2420mm, 7.8030mm), and symbol ey, py, ex, px are indicated
Reference axis (maximum scale ± 20 micron)；The curvature of field and distortion figure of Fig. 3 E, maximum field of view (Maximum Field) are 36.688
Degree；The lateral chromatic aberration figure of Fig. 3 F, maximum field of view (Maximum Field) are 7.8030 microns；The longitudinal aberration diagram of Fig. 3 G,
Pupil radius (Pupil Radius) is 2.5088 millimeters, it can be seen that, effective radius (SD) and maximum image height (Max IMH) accord with
Following condition: 1.3 < SD/Max IMH < 2.4 is closed, good projection image quality is also maintained, is optimal matching range.
Based on above-mentioned composition, the present invention is special with the matched technology of effective radius (SD) and maximum image height (Max IMH)
Sign, in certain matching range, can also weigh and consider in order to uphold justice between projection imaging quality and manufacturing cost, volume, and the matching range has one
Determine the stability of degree, and can be applied to the first~tri- embodiment, is optimal matching range, cooperates saturating with the Glass aspheric
Mirror replaces plastic aspheric lens, also promotes the reliability of projection imaging quality, has the effect of mutually auxiliary multiplication, therefore, this hair
It is bright to be applied to high-brightness projection machine, even if temperature produced by operating is higher, nor affect on projection imaging quality.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, it is all
It is any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the invention, still falls within
In the range of technical solution of the present invention.
In conclusion the present invention designs, in structure using on practicability and cost-effectiveness, complying fully with industry development institute
It needs, and revealed structure is also to have unprecedented innovative structure, there is novelty, creativeness, practicability, meet related
The regulation of invention patent requirement, therefore lift application in accordance with the law.
Claims (9)
1. a kind of telecentric lens systems, which is characterized in that its maximum image height is set as Max IMH, and by projection side to image source
Side sequentially includes:
One first lens, the second lens, the third lens, the 4th lens, aperture, the 5th lens, the 6th lens, the 7th lens,
Eight lens and the 9th lens, first lens and second lens are all negative lens, and first lens or second lens are
Glass aspheric lenses, the effective radius of the glass aspheric lenses are set as SD, and meet following condition: 1.3 < SD/Max
IMH < 2.4.
2. telecentric lens systems according to claim 1, which is characterized in that the coke ratio of the aperture is set as 1.7~
2.1。
3. telecentric lens systems according to claim 1, which is characterized in that the 5th lens, the 6th lens, the 7th are thoroughly
Mirror, the 8th lens and the 9th lens are with the 5th lens, the 6th lens, one balsaming lens of the 7th lens forming, and the 5th is saturating
A glass aspheric lenses, two high dispersions are included at least in mirror, the 6th lens, the 7th lens, the 8th lens, the 9th lens
Lens, the Abbe number of the high dispersing lens are set as Vd, wherein the Vd < 30.
4. telecentric lens systems according to claim 1, which is characterized in that first lens, the second lens settings at
One focusing group；The third lens are set to a group of stability；4th lens settings are at one first zoom group；The aperture, the 5th are thoroughly
Mirror, the 6th lens, the 7th lens, the 8th lens, the 9th lens settings make the first zoom group, second at one second zoom group
Zoom group interlocks progress zoom and focuses with focusing group movement.
5. telecentric lens systems according to claim 1, which is characterized in that the third lens are concave-convex lens and its is convex
Facing towards projection side；4th lens are concave-convex lens and its convex surface towards projection side；5th lens be concave-convex lens and its
Concave surface is towards projection side；6th lens are biconcave lens；7th lens are biconvex lens；8th lens are lenticular
Mirror；9th lens are plano-convex lens and its flat surface towards projection side.
6. telecentric lens systems according to claim 1, which is characterized in that the third lens are concave-convex lens and its is recessed
Facing towards projection side；4th lens are concave-convex lens and its convex surface towards projection side；5th lens are biconvex lens；This
Six lens are biconcave lens；7th lens are biconvex lens；8th lens are biconvex lens；9th lens are lenticular
Mirror.
7. telecentric lens systems according to claim 1, which is characterized in that the negative lens of second lens is that concave-concave is saturating
Mirror；The third lens be biconvex lens, and with one compound lens of the second lens forming；4th lens be concave-convex lens and its
Convex surface is towards projection side；5th lens are concave-convex lens and its concave surface towards projection side；6th lens are biconcave lens；It should
7th lens are biconvex lens；8th lens are biconvex lens；9th lens are biconvex lens.
8. telecentric lens systems according to claim 1, which is characterized in that further include an optical element, be located at the 9th
The rear of lens.
9. telecentric lens systems according to claim 8, which is characterized in that it further include the smooth image device of a penetration,
It is located between the optical element and the 9th lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710580031.2A CN109270669B (en) | 2017-07-17 | 2017-07-17 | Telecentric lens system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710580031.2A CN109270669B (en) | 2017-07-17 | 2017-07-17 | Telecentric lens system |
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| CN109270669A true CN109270669A (en) | 2019-01-25 |
| CN109270669B CN109270669B (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710580031.2A Active CN109270669B (en) | 2017-07-17 | 2017-07-17 | Telecentric lens system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113253444A (en) * | 2020-02-11 | 2021-08-13 | 上旸光学股份有限公司 | Zoom projection system |
| CN113534407A (en) * | 2021-06-30 | 2021-10-22 | 江西晶超光学有限公司 | Optical lens, camera module and electronic equipment |
| US11340517B2 (en) | 2019-12-26 | 2022-05-24 | Coretronic Corporation | Projection lens module and projector |
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| CN102236159A (en) * | 2010-04-28 | 2011-11-09 | 富士胶片株式会社 | Zoom lens for projection and projection-type display apparatus |
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| CN113534407A (en) * | 2021-06-30 | 2021-10-22 | 江西晶超光学有限公司 | Optical lens, camera module and electronic equipment |
| CN113534407B (en) * | 2021-06-30 | 2023-11-07 | 江西晶超光学有限公司 | Optical lens, camera module and electronic equipment |
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| Publication number | Publication date |
|---|---|
| CN109270669B (en) | 2021-02-26 |
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