CN108459399A - Large aperture pick-up lens - Google Patents
Large aperture pick-up lens Download PDFInfo
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- CN108459399A CN108459399A CN201810461470.6A CN201810461470A CN108459399A CN 108459399 A CN108459399 A CN 108459399A CN 201810461470 A CN201810461470 A CN 201810461470A CN 108459399 A CN108459399 A CN 108459399A
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- 239000000571 coke Substances 0.000 claims abstract description 32
- 230000004075 alteration Effects 0.000 claims description 18
- 239000011521 glass Substances 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 7
- 206010010071 Coma Diseases 0.000 claims description 6
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000003384 imaging method Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 9
- 241001269238 Data Species 0.000 description 3
- 201000009310 astigmatism Diseases 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Classifications
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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
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
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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
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/008—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras designed for infrared light
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- Optics & Photonics (AREA)
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Abstract
A kind of large aperture pick-up lens includes successively from exit end to source ends：The first lens group, diaphragm with positive light coke and the second lens group with positive light coke, wherein：First lens group includes successively：The first eyeglass with positive light coke, the second eyeglass with positive light coke and the third eyeglass with negative power or third cemented doublet, the second lens group include successively：4th cemented doublet, the 5th eyeglass with positive light coke and the 6th eyeglass with negative power.The present invention provides a kind of apertures to be less than 1.1；Effective imaging surface is more than 18mm；Imaging band is 400~1100nm；The pick-up lens that use environment temperature range is 40 DEG C~80 DEG C, and there is smaller volume and weight in generic camera lens.
Description
Technical field
The present invention relates to a kind of technology in optical device field, specifically a kind of aperture is less than 1.1 pick-up lens.
Background technology
Pick-up lens is quickly grown, and the requirement to its various aspects is also constantly promoted, in addition to promoted requirement to clarity it
Outside, such as to other performance indicators：The requirement of aperture, infrared confocal, athermal etc. is also constantly promoted.Especially in safety monitoring and night
Depending on instrument field, super large aperture is generally required, infrared confocal and athermal function carrys out the variation of response environment.The prior art
Pick-up lens, which mostly exists, lacks the defects of infrared confocal, volume is big, weight is heavy or there are thermal drifts, it is difficult to meet and gradually be promoted
Market demands.
Invention content
The present invention is directed to deficiencies of the prior art, proposes a kind of large aperture pick-up lens, with large aperture, greatly
Target surface, infrared confocal and athermal function.
The present invention is achieved by the following technical solutions：
The present invention includes successively from exit end to source ends：The first lens group, diaphragm with positive light coke and with just
Second lens group of focal power.
First lens group includes successively：The first eyeglass with positive light coke, the second mirror with positive light coke
Piece and the third eyeglass with negative power or third cemented doublet.
Second lens group includes successively：4th cemented doublet, the 5th eyeglass with positive light coke and have
6th eyeglass of negative power.
The bore of first eyeglass and the ratio of the entire length of camera lens are (0.55,0.67) to determine camera lens aperture
Range and limit the volume and weight of camera lens, refractive index is (1.8,1.85), and the refractive index variation with temperature amount is small
It is used in complex environment in zero with meeting.
The refractive index of second eyeglass is (1.47,1.7), and Abbe number is (60,85) to correct within the scope of broadband
The aberration of white light.
4th cemented doublet includes：After one piece of front lens with negative power and one piece are with positive light coke
Eyeglass is to correct the spherical aberration and coma within the scope of broadband.
The focal length of 6th eyeglass is (- 0.8, -0.46) with the ratio of camera lens effective focal length.
Be further provided with the 7th eyeglass with negative power in second lens group, the focal length of the 7th eyeglass with
The ratio of camera lens effective focal length is (- 0.8, -0.46).
The focal length of first lens group is (1.2,1.8) with the ratio of camera lens effective focal length；Second lens
The focal length of group and the ratio of camera lens effective focal length are (0.8,1) with the focal power of reasonable distribution camera lens.
The entire length of the camera lens and the ratio of camera lens effective focal length are (1.46,1.54) to limit the entirety of camera lens
Length.
The image planes height of the camera lens and the ratio of camera lens effective focal length are (0.43,0.47) to limit angle lens model
It encloses.
Technique effect
Compared with prior art, the present invention provides a kind of apertures to be less than 1.1；Effective imaging surface is more than 18mm；It is imaged wave
Section is 400~1100nm；Use environment temperature range is -40 DEG C~80 DEG C of pick-up lens, while having in generic camera lens
There is smaller volume and weight.
Description of the drawings
Fig. 1 is the semi-cutaway of embodiment 1；
Fig. 2 is each aberration diagram of embodiment 1；
Fig. 3 is the light chromaticity difference diagram of embodiment 1；
Fig. 4 is the semi-cutaway of embodiment 2；
Fig. 5 is each aberration diagram of embodiment 2；
Fig. 6 is the light chromaticity difference diagram of embodiment 2；
Fig. 7 is the semi-cutaway of embodiment 3；
Fig. 8 is each aberration diagram of embodiment 3；
Fig. 9 is the light chromaticity difference diagram of embodiment 3；
In figure：First lens group G1, diaphragm STP, the second lens group G2, the first eyeglass L1, the second eyeglass L2, third eyeglass
L3, the 4th cemented doublet L4, the 5th eyeglass L5, the 6th eyeglass L6, the 7th eyeglass L7, protective glass CG, the first front lens L41,
First rear lens L42, the second front lens L31, the second rear lens L32.
Specific implementation mode
Embodiment 1
As shown in Figure 1, the present embodiment includes successively from exit end to source ends：The first lens group with positive light coke
G1, diaphragm STP and the second lens group G2 with positive light coke.
The first lens group G1 includes successively：The first eyeglass L1 with positive light coke, with positive light coke
Two eyeglass L2 and third eyeglass L3 with negative power.
The second lens group G2 includes successively：4th cemented doublet L4, the 5th eyeglass L5 with positive light coke and
The 6th eyeglass L6 with negative power.
The 4th cemented doublet L4 includes：The first front lens L41 with negative power and with positive light coke
First rear lens L42.
The bore of the first eyeglass L1 and the ratio of the entire length of camera lens are (0.55,0.67) to determine camera lens mouth
The range of diameter and the volume and weight for limiting camera lens, refractive index variation with temperature amount are less than zero to meet in complex environment
Middle use.
The refractive index of the first eyeglass L1 be (1.8,1.85) with reasonable distribution focal power and the camera lens that effectively shortens it is long
Degree and bore.
The refractive index of the second eyeglass L2 is (1.47,1.7), and Abbe number is (60,85) to correct broadband range
The aberration of interior white light.
The focal length of the 6th eyeglass L6 is (- 0.8, -0.46) with the ratio of camera lens effective focal length.
The focal length of the first lens group G1 is (1.2,1.8) with the ratio of camera lens effective focal length；Described second is thoroughly
The focal length of microscope group G2 and the ratio of camera lens effective focal length are (0.8,1) with the focal power of reasonable distribution camera lens.
The entire length of the camera lens and the ratio of camera lens effective focal length are (1.46,1.54) to limit the entirety of camera lens
Length.
The image planes height of the camera lens and the ratio of camera lens effective focal length are (0.43,0.47) to limit angle lens model
It encloses.
The second lens group G2 with positive light coke and protective glass CG is equipped between source ends.
Hereinafter, showing the various numeric datas about the present embodiment.
The focal length f=41mm of camera lens entirety；Aperture F#=1.08；The ratio of the focal length of camera lens entire length and camera lens is
TTL/f=1.47；The ratio of the image planes height of camera lens and the focal length of camera lens is IMH/f=0.44；The focal length of first lens group with
The ratio of the focal length of camera lens is f1/f=1.7；The ratio of the focal length of second lens group and the focal length of camera lens is f2/f=0.9；The
The ratio of the focal length of six eyeglasses and the focal length of camera lens is f21/f=0.75；The bore of first eyeglass and the ratio of camera lens entire length
Value is D1/L=0.66.
1 the present embodiment lens construction parameter of table
Wherein the second surface of the first front lens L41 of the 4th cemented doublet L4 is the first surface of the first rear lens L42.
As shown in Fig. 2, for the present embodiment axial chromatic aberration, the curvature of field and distortion, shown according on figure, the present embodiment it is red green
The axial chromatic aberration of blue three colors has obtained good correction, can blur-free imaging；The axial chromatic aberration of infrared light has also obtained rectifying well
Just, it realizes infrared confocal；Curvature of field curve shows that T lines and S lines have good convergence, and the curvature of field and astigmatism are very outstanding, protects
It demonstrate,proves entire picture and is imaged uniform requirement；Distortion curve shows that camera lens has reached undistorted.
As shown in figure 3, being light chromaticity difference diagram, shown according on figure, the present embodiment to the ratio chromatism, of redgreenblue and
Coma has carried out good amendment, meets high pixel request.
Embodiment 2
As shown in figure 4, compared with Example 1, the second lens group G2 with positive light coke of the present embodiment includes successively：
4th cemented doublet L4, the 5th eyeglass L5 with positive light coke, the 6th eyeglass L6 with positive light coke and with negative light focus
7th eyeglass L7 of degree.
The 4th cemented doublet L4 includes：The first front lens L41 with negative power and with positive light coke
First rear lens L42.
Hereinafter, showing the various numeric datas about the present embodiment.
The focal length f=39mm of camera lens entirety；Aperture F#=1.05；The ratio of the focal length of camera lens entire length and camera lens is
TTL/f=1.53；The ratio of the image planes height of camera lens and the focal length of camera lens is IMH/f=0.46；The focal length of first lens group with
The ratio of the focal length of camera lens is f1/f=1.67；The ratio of the focal length of second lens group and the focal length of camera lens is f2/f=0.85；
The ratio of the focal length of 7th eyeglass and the focal length of camera lens is f21/f=0.64；The bore of first eyeglass and camera lens entire length
Ratio is D1/L=0.6.
2 the present embodiment lens construction parameter of table
Wherein the second surface of the first front lens L41 of the 4th cemented doublet L4 is the first surface of the first rear lens L42.
As shown in figure 5, for the present embodiment axial chromatic aberration, the curvature of field and distortion, shown according on figure, the present embodiment it is red green
The axial chromatic aberration of blue three colors has obtained good correction, can blur-free imaging；The axial chromatic aberration of infrared light has also obtained rectifying well
Just, it realizes infrared confocal；Curvature of field curve shows that T lines and S lines have good convergence, and the curvature of field and astigmatism are very outstanding, protects
It demonstrate,proves entire picture and is imaged uniform requirement；Distortion curve shows that camera lens has reached undistorted.
As shown in fig. 6, being light chromaticity difference diagram, shown according on figure, the present embodiment to the ratio chromatism, of redgreenblue and
Coma has carried out good amendment, meets high pixel request.
Embodiment 3
As shown in fig. 7, compared with Example 2, the first lens group G1 with positive light coke of the present embodiment includes successively：
The first eyeglass L1 with positive light coke, the second eyeglass L2 with positive light coke and third cemented doublet L3.
The third cemented doublet L3 includes：The second front lens L31 with positive light coke and with negative power
Second rear lens L32.
Hereinafter, showing the various numeric datas about the present embodiment.
The focal length f=40mm of camera lens entirety；Aperture F#=1.0；The ratio of the focal length of camera lens entire length and camera lens is
TTL/f=1.5；The ratio of the image planes height of camera lens and the focal length of camera lens is IMH/f=0.45；The focal length and mirror of first lens group
The ratio of the focal length of head is f1/f=1.25；The ratio of the focal length of second lens group and the focal length of camera lens is f2/f=0.975；The
The ratio of the focal length of seven eyeglasses and the focal length of camera lens is f21/f=0.5；The ratio of the bore and camera lens entire length of first eyeglass
For D1/L=0.57.
3 the present embodiment lens construction parameter of table
The second surface of the second front lens L31 of wherein third cemented doublet L3 is the first surface of the second rear lens L32,
The second surface of the first front lens L41 of 4th cemented doublet L4 is the first surface of the first rear lens L42.
As shown in figure 8, for the present embodiment axial chromatic aberration, the curvature of field and distortion, shown according on figure, the present embodiment it is red green
The axial chromatic aberration of blue three colors has obtained good correction, can blur-free imaging；The axial chromatic aberration of infrared light has also obtained rectifying well
Just, it realizes infrared confocal；Curvature of field curve shows that T lines and S lines have good convergence, and the curvature of field and astigmatism are very outstanding, protects
It demonstrate,proves entire picture and is imaged uniform requirement；Distortion curve shows that camera lens has reached undistorted.
As shown in figure 9, being light chromaticity difference diagram, shown according on figure, the present embodiment to the ratio chromatism, of redgreenblue and
Coma has carried out good amendment, meets high pixel request.
Above-mentioned specific implementation can by those skilled in the art under the premise of without departing substantially from the principle of the invention and objective with difference
Mode carry out local directed complete set to it, protection scope of the present invention is subject to claims and not by above-mentioned specific implementation institute
Limit, each implementation within its scope is by the constraint of the present invention.
Claims (10)
1. a kind of large aperture pick-up lens, which is characterized in that include successively from exit end to source ends：With positive light coke
One lens group, diaphragm and the second lens group with positive light coke, wherein：First lens group includes successively：With positive light coke
The first eyeglass, the second eyeglass with positive light coke and the third eyeglass with negative power or third cemented doublet,
Two lens groups include successively：4th cemented doublet, the 5th eyeglass with positive light coke and the 6th mirror with negative power
Piece.
2. large aperture pick-up lens according to claim 1, characterized in that the entire length of the camera lens has with camera lens
The ratio for imitating focal length is (1.46,1.54) to limit the entire length of camera；The image planes height of camera lens and camera lens effective focal length
Ratio be (0.43,0.47) to limit camera angle range.
3. large aperture pick-up lens according to claim 1, characterized in that the focal length and camera lens of first lens group
The ratio of effective focal length is (1.2,1.8)；The focal length of second lens group is (0.8,1) with the ratio of camera lens effective focal length
With the focal power of reasonable distribution camera lens.
4. large aperture pick-up lens according to claim 1, characterized in that the focal length of the 6th eyeglass has with camera lens
The ratio for imitating focal length is (- 0.8, -0.46).
5. large aperture pick-up lens according to claim 1, characterized in that the bore of first eyeglass and camera lens
The ratio of entire length be (0.55,0.67) to determine the range of camera lens aperture and limit the volume and weight of camera lens, folding
It is (1.8,1.85) to penetrate rate, which is less than zero and is used in complex environment with meeting.
6. large aperture pick-up lens according to claim 1, characterized in that the refractive index of second eyeglass is
(1.47,1.7), Abbe number are (60,85) to correct the aberration of white light within the scope of broadband.
7. large aperture pick-up lens according to claim 1, characterized in that the 4th cemented doublet is for correcting
The cemented doublet of spherical aberration and coma within the scope of broadband, including：Front lens with negative power and with positive light coke
Rear lens.
8. large aperture pick-up lens according to claim 1, characterized in that the third cemented doublet is for correcting
The cemented doublet of spherical aberration and coma within the scope of broadband, including：The second front lens with positive light coke and with negative light focus
Second rear lens of degree.
9. large aperture pick-up lens according to claim 1, characterized in that be further provided in second lens group
The 7th eyeglass with negative power, the focal length of the 7th eyeglass are (- 0.8, -0.46) with the ratio of camera lens effective focal length.
10. according to the miniature zoom lens described in any of the above-described claim, characterized in that real using any one following structure
It is existing：
1. the radius of curvature of the first surface of the first eyeglass is 40.07, thickness 6.96, refractive index 1.82, Abbe
Number is 46.5, and the radius of curvature of the second surface of the first eyeglass is unlimited, thickness 0.41, the first surface of the second eyeglass
Radius of curvature is 18.52, thickness 6.34, refractive index 1.62, Abbe number 63.4, the second surface of the second eyeglass
Radius of curvature be 60.48, thickness 0.84, the radius of curvature of the first surface of third eyeglass is 194.38, and thickness is
1.93, the radius of curvature of refractive index 1.69, Abbe number 31.2, the second surface of third eyeglass is 12.3, thickness
It is 5.03, the radius of curvature of diaphragm is unlimited, thickness 2.08, forms the first table of the first front lens of the 4th cemented doublet
The radius of curvature in face is -35.44, thickness 1.2, refractive index 1.6, and Abbe number 38 forms the 4th cemented doublet
The first front lens second surface radius of curvature be 12.32, thickness 6.43, refractive index 1.59, Abbe
Number is 68.6, and the radius of curvature for forming the second surface of the first rear lens of the 4th cemented doublet is -40.11, and thickness is
8.96, the radius of curvature of the first surface of the 5th eyeglass is 25.37, thickness 8.98, refractive index 1.85, Abbe number
It is 42.2, the radius of curvature of the second surface of the 5th eyeglass is -35.83, thickness 3.14, the first surface of the 6th eyeglass
Radius of curvature is -25.39, thickness 1.2, refractive index 1.67, Abbe number 32.2, the second surface of the 6th eyeglass
Radius of curvature be 100.92, the radius of curvature of thickness 4.4, the first surface of protective glass is unlimited, and thickness is
1.1, the radius of curvature of refractive index 1.52, Abbe number 64, the second surface of protective glass is unlimited, thickness 1；
2. the radius of curvature of the first surface of the first eyeglass is 40.05, thickness 6.62, refractive index 1.84, Abbe
Number is 43, and the radius of curvature of the second surface of the first eyeglass is unlimited, thickness 0.1, the song of the first surface of the second eyeglass
Rate radius is 17.95, thickness 6.4, refractive index 1.62, Abbe number 63.4, the second surface of the second eyeglass
Radius of curvature is 60.59, thickness 0.77, and the radius of curvature of the first surface of third eyeglass is 160.84, and thickness is
1.3, the radius of curvature of refractive index 1.67, Abbe number 32, the second surface of third eyeglass is 13.9, and thickness is
5.55, the radius of curvature of diaphragm is unlimited, thickness 1.86, forms the first surface of the first front lens of the 4th cemented doublet
Radius of curvature be -50.37, thickness 1.2, refractive index 1.67, Abbe number 32 forms the 4th cemented doublet
The radius of curvature of the second surface of first front lens is 16.32, thickness 4.11, refractive index 1.6, and Abbe number is
60, the radius of curvature for forming the second surface of the first rear lens of the 4th cemented doublet is 100.97, thickness 4.53, the 5th
The radius of curvature of the first surface of eyeglass is 27.5, thickness 5.51, refractive index 1.49, Abbe number 81.6, the
The radius of curvature of the second surface of five eyeglasses is -40.89, thickness 7.07, the radius of curvature of the first surface of the 6th eyeglass
It is 29.83, thickness 4.89, refractive index 1.91, Abbe number 35.2, the curvature half of the second surface of the 6th eyeglass
Diameter is -50.47, thickness 2.79, and the radius of curvature of the first surface of the 7th eyeglass is -29.51, thickness 1.3, folding
It is 1.6 to penetrate rate, Abbe number 38, and the radius of curvature of the second surface of the 7th eyeglass is 40.72, thickness 4.69, protection
The first surface radius of curvature of glass is unlimited, thickness 1.1, refractive index 1.52, Abbe number 64, protective glass
The radius of curvature of second surface be unlimited, thickness 0.26；
3. the radius of curvature of the first surface of the first eyeglass is 50.18, thickness 5, refractive index 1.8, Abbe number is
46.5, the radius of curvature of the second surface of the first eyeglass is unlimited, thickness 0.41, the curvature of the first surface of the second eyeglass
Radius is 30.93, thickness 5.04, refractive index 1.49, Abbe number 81.6, the song of the second surface of the second eyeglass
Rate radius is 50.73, thickness 0.1, and the radius of curvature for forming the first surface of the second front lens of third cemented doublet is
20.56, thickness 5.77, refractive index 1.59, Abbe number 68.6, the second front lens of composition third cemented doublet
The radius of curvature of second surface be 40.89, thickness 1.2, refractive index 1.74, Abbe number 28.3 forms the
The radius of curvature of the second surface of the second rear lens of gluing of three eyeglasses is 14.9, thickness 4.56, the radius of curvature of diaphragm
To be unlimited, thickness 2.04, the radius of curvature for forming the first surface of the first front lens of the 4th cemented doublet is -40.63,
Its thickness is 1.2, refractive index 1.6, and Abbe number 38 forms the second surface of the first front lens of the 4th cemented doublet
Radius of curvature be 12.02, thickness 4.35, refractive index 1.52, Abbe number 64 forms the 4th cemented doublet
The radius of curvature of the second surface of first rear lens is 25.69, thickness 3.48, the curvature half of the first surface of the 5th eyeglass
Diameter is 22.79, thickness 5.52, refractive index 1.59, Abbe number 68.6, the curvature of the second surface of the 5th eyeglass
Radius is -40.32, thickness 6.67, and the radius of curvature of the first surface of the 6th eyeglass is 27, thickness 5.25, folding
It is 1.91 to penetrate rate, Abbe number 35.2, and the radius of curvature of the second surface of the 6th eyeglass is -45.67, thickness 1.2, the
The radius of curvature of the first surface of seven eyeglasses is -20.59, thickness 1.2, refractive index 1.67, Abbe number 32, the
The radius of curvature of the second surface of seven eyeglasses is 35.44, thickness 4.9, and the first surface radius of curvature of protective glass is nothing
The radius of curvature of limit, thickness 1.1, refractive index 1.52, Abbe number 64, the second surface of protective glass is nothing
Limit, thickness 1.01.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810461470.6A CN108459399A (en) | 2018-05-15 | 2018-05-15 | Large aperture pick-up lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810461470.6A CN108459399A (en) | 2018-05-15 | 2018-05-15 | Large aperture pick-up lens |
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| Publication Number | Publication Date |
|---|---|
| CN108459399A true CN108459399A (en) | 2018-08-28 |
Family
ID=63215410
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810461470.6A Pending CN108459399A (en) | 2018-05-15 | 2018-05-15 | Large aperture pick-up lens |
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| CN (1) | CN108459399A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020259697A1 (en) * | 2019-06-27 | 2020-12-30 | 华为技术有限公司 | Optical lens unit, camera, and terminal device |
-
2018
- 2018-05-15 CN CN201810461470.6A patent/CN108459399A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020259697A1 (en) * | 2019-06-27 | 2020-12-30 | 华为技术有限公司 | Optical lens unit, camera, and terminal device |
| EP3961282A4 (en) * | 2019-06-27 | 2022-07-06 | Huawei Technologies Co., Ltd. | Optical lens unit, camera, and terminal device |
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