CN102937739A - Projection camera lens - Google Patents
Projection camera lens Download PDFInfo
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- CN102937739A CN102937739A CN201210419363XA CN201210419363A CN102937739A CN 102937739 A CN102937739 A CN 102937739A CN 201210419363X A CN201210419363X A CN 201210419363XA CN 201210419363 A CN201210419363 A CN 201210419363A CN 102937739 A CN102937739 A CN 102937739A
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- lens
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- sphere
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- aspheric surface
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Abstract
The invention relates to a projection camera lens, comprising a lens assembly. A projection imaging system is formed by the lens assembly, a display device, a light splitting device and a display screen, wherein the projection imaging system meets the following parameter conditions that FOV. is more than or equal to 29 degrees and is less than or equal to 39 degrees; f' is more than or equal to 10.0 mm and less than or equal to 14.0 mm; and NA is more than or equal to 0.204 and less than or equal to 0.232. The FOV. represents a half view field angle of the projection imaging system; the f' represents a focal length of the projection imaging system; and the NA represents an object space numerical value pore diameter of the projection imaging system. The projection camera lens disclosed by the invention is matched with a DMD (Digital Micro mirror Device) or LCOS (Liquid Crystal on Silicon) display device and a corresponding illumination light path; a light beam which is modulated by the display device is collected and focused to the display screen; and the projection camera lens has the characteristics of large display size, high light utilization rate, low cost and the like.
Description
Technical field
The present invention relates to digital projection display technique field, more particularly, relate to the projection lens that uses on a kind of DLP or the LCOS projection light machine.
Background technology
Existing digital projection display technique mainly adopts DMD or LCOS as display device, adopt polarization spectro element (PBS) or total reflection beam splitter (TIR) as illumination/imaging light-splitting device, by projection lens light path reasonable in design, will focus on from the image that display device reflects above the display screen curtain.For obtaining good display image quality and larger projected picture size (projection is than in＜1.5 the situation), the common complex structure of projection lens, eyeglass quantity is generally above 8; Because the glass material price is high, processing and assembly technology are complicated, and yield is wayward, and existing projection lens is usually expensive.
Summary of the invention
The technical problem to be solved in the present invention is, for the defects of prior art, provides a kind of projection lens, and this projection lens technique is simple, low price.
The technical solution adopted for the present invention to solve the technical problems is: a kind of projection lens, comprise lens subassembly, this lens subassembly and display device, light-splitting device and display screen curtain consist of projection imaging system,, wherein: described imaging system satisfies following Parameter Conditions:
29°≤FOV.≤39°，
10.0mm≤f’≤14.0mm，
0.204≤NA≤0.232。
Wherein: FOV. represents the projection imaging system angle of half field-of view, f ' expression projection imaging system focal length, and NA represents the object space numerical aperture of projection imaging system.
Beneficial effect of the present invention is: by the projection lens of the present invention's design, be used with DMD or LCOS display device and corresponding illumination path, with the beam dump of display device reflection and focus on display screen, it is large to have a display size, the characteristics such as the light utilization ratio is high, and cost is low.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the system diagram of the embodiment of the invention 1;
Fig. 2 is the ray tracing figure of the embodiment of the invention 1;
Fig. 3 is the transfer curve figure of the embodiment of the invention 1;
Fig. 4 is the curvature of field and the distortion curve figure of the embodiment of the invention 1;
Fig. 5 is the chromatic longitudiinal aberration curve map of the embodiment of the invention 1;
Fig. 6 is the system diagram of the embodiment of the invention 2;
Fig. 7 is the ray tracing figure of the embodiment of the invention 2;
Fig. 8 is the transfer curve figure of the embodiment of the invention 2;
Fig. 9 is the curvature of field and the distortion curve figure of the embodiment of the invention 2;
Figure 10 is the chromatic longitudiinal aberration curve map of the embodiment of the invention 2;
Figure 11 is the system diagram of the embodiment of the invention 3;
Figure 12 is the ray tracing figure of the embodiment of the invention 3;
Figure 13 is the transfer curve figure of the embodiment of the invention 3;
Figure 14 is the curvature of field and the distortion curve figure of the embodiment of the invention 3;
Figure 15 is the chromatic longitudiinal aberration curve map of the embodiment of the invention 3;
Figure 16 is the system diagram of the embodiment of the invention 4;
Figure 17 is the ray tracing figure of the embodiment of the invention 4;
Figure 18 is the transfer curve figure of the embodiment of the invention 4;
Figure 19 is the curvature of field and the distortion curve figure of the embodiment of the invention 4;
Figure 20 is the chromatic longitudiinal aberration curve map of the embodiment of the invention 4;
Figure 21 is the system diagram of the embodiment of the invention 5;
Figure 22 is the ray tracing figure of the embodiment of the invention 5;
Figure 23 is the transfer curve figure of the embodiment of the invention 5;
Figure 24 is the curvature of field and the distortion curve figure of the embodiment of the invention 5;
Figure 25 is the chromatic longitudiinal aberration curve map of the embodiment of the invention 5;
Figure 26 is the system diagram of the embodiment of the invention 6;
Figure 27 is the ray tracing figure of the embodiment of the invention 6;
Figure 28 is the transfer curve figure of the embodiment of the invention 6;
Figure 29 is the curvature of field and the distortion curve figure of the embodiment of the invention 6;
Figure 30 is the chromatic longitudiinal aberration curve map of the embodiment of the invention 6.
Embodiment
The invention provides a kind of projection lens, be used with DMD or LCOS display device and corresponding illumination path, with the beam dump of display device reflection and focus on display screen, its location arrangements is followed successively by from the display device to the display screen: display device 1, light-splitting device 2, lens subassembly [L1]-[L6] and display screen, and described imaging system satisfies following Parameter Conditions:
29°≤FOV.≤39°，
10.0mm≤f’≤14.0mm，
0.204≤NA≤0.232。
Wherein: FOV. represents the projection imaging system angle of half field-of view, f ' expression projection imaging system focal length, and NA represents the object space numerical aperture of projection imaging system.
The described lens subassembly of the embodiment of the invention comprises the lens that are arranged in order: aspheric surface biconvex lens [L1]; Sphere biconvex lens [L2]; Sphere biconcave lens [L3]; Sphere crescent moon or plano-convex lens [L4] have convex surface in display device one side; Sphere biconvex lens [L5]; Aspheric surface crescent moon lens [L6] have convex surface in screen one side; Diaphragm 3 is positioned between sphere crescent moon or plano-convex lens [L4] and the aspheric surface crescent moon lens [L5].Described sphere biconvex lens [L2] and sphere biconcave lens [L3] gummed form cemented doublet, or sphere biconvex lens [L2], sphere biconcave lens [L3] and sphere crescent moon or plano-convex lens [L4] gummed formation three balsaming lenss.
The following parameter of described each lens of the embodiment of the invention:
Table 1: each lens parameter table
F ' projection imaging system focal length, take mm as unit,
f
i' each focal length of lens, take mm as unit
R
IjEach plane of refraction radius take mm as unit, during for aspheric surface, adopts the inverse of curvature of centre, i.e. 1/c,
T
iThe center thickness of each lens is take mm as unit
D
iThe summit is to the spacing between next lens or the optical surface, take mm as unit behind each lens
D
sDiaphragm arrives next lens apex spacing,
I lens sequence number,
Former and later two planes of refraction of i lens of j.
Below the present invention is further illustrated by preferred forms:
The imaging system that the embodiment of the invention 1 provides, FOV.=38.38 ° of its projection imaging system angle of half field-of view, projection imaging system focal distance f '=10.0mm; The object space NA=0.204 of projection imaging system.Lens subassembly is arranged in order as shown in Figure 1 to the display screen direction from light-splitting device, aspheric surface biconvex lens [L1]; Sphere biconvex lens [L2]; Sphere biconcave lens [L3]; Spherical plano-convex lens [L4] has convex surface in display device one side; Sphere biconvex lens [L5]; Aspheric surface crescent moon lens [L6] have convex surface in screen one side; Sphere biconvex lens [L2], sphere biconcave lens [L3] form three balsaming lenss with spherical plano-convex lens [L4] gummed; Diaphragm is positioned between spherical plano-convex lens [L4] and the aspheric surface crescent moon lens [L5].Each lens parameter is as shown in table 2 below:
Table 2. embodiment 1 lens arrangement parameter
The described aspheric surface biconvex lens of the embodiment of the invention [L1] and aspheric surface crescent moon lens [L6] have an aspheric surface at least, and aspheric shape draws by following polynomial expression:
Wherein Z represents that point on the aspheric surface is from the distance of aspheric surface summit at optical axis direction; R represents that point on the aspheric surface is to the distance of optical axis; C represents aspheric curvature of centre; K represents rate of taper; a
4, a
6, a
8, a
10Expression aspheric surface high-order term coefficient.Two surperficial sequence numbers of aspheric surface biconvex lens [L1] are 6 and 7, and the surperficial sequence number of aspheric surface crescent moon lens [L6] is 17 and 18, and these two aspheric parameters of lens are as follows:
Table 3. embodiment 1 aspheric surface parameter
According to the projection lens that above-mentioned imaging system and each lens parameter draw, its ray tracing figure as shown in Figure 2; Full visual field optical transfer function MTF under the 66lp/mm spatial frequency〉44%, as shown in Figure 3; Maximum distortion only 0.5%, as shown in Figure 4; This imaging system chromatic longitudiinal aberration is 4.0 microns to the maximum, as shown in Figure 5.
The embodiment of the invention 2 only will be illustrated with embodiment 1 different piece, the imaging system that present embodiment 2 provides, FOV.=38.38 ° of its projection imaging system angle of half field-of view, projection imaging system focal distance f '=10.0mm; The object space NA=0.2316 of projection imaging system.Lens subassembly is arranged in order as shown in Figure 6 to the display screen direction from light-splitting device, and wherein, [L4] is sphere crescent moon lens, sphere biconvex lens [L2] with form cemented doublet with sphere biconcave lens [L3] gummed.The parameter of projection lens is as shown in table 4 below:
Table 4. embodiment 2 lens arrangement parameters
Two surperficial sequence numbers of aspheric surface biconvex lens [L1] are 6 and 7, and the surperficial sequence number of aspheric surface crescent moon lens [L6] is 17 and 18, and these two aspheric parameters of lens are as shown in table 5 below:
Table 5. embodiment 2 aspheric surface parameters
According to the projection lens that above-mentioned imaging system and each lens parameter draw, its ray tracing figure as shown in Figure 7; Full visual field optical transfer function MTF under the 66lp/mm spatial frequency〉45.2%, as shown in Figure 8; Maximum distortion only 0.5%, as shown in Figure 9; This imaging system chromatic longitudiinal aberration is 3.9 microns to the maximum, as shown in figure 10.
The embodiment of the invention 3 only will be illustrated with embodiment 1 different piece, the imaging system that present embodiment 3 provides, FOV.=33.43 ° of its projection imaging system angle of half field-of view, projection imaging system focal distance f '=12.0mm; The object space NA=0.204 of projection imaging system.Lens subassembly is arranged in order as shown in figure 11 to the display screen direction from light-splitting device, and wherein, [L4] is sphere crescent moon lens, sphere biconvex lens [L2] with form cemented doublet with sphere biconcave lens [L3] gummed.The parameter of projection lens is as shown in table 6 below:
6. embodiment 3 lens arrangement parameters
Two surperficial sequence numbers of aspheric surface biconvex lens [L1] are 6 and 7, and the surperficial sequence number of aspheric surface crescent moon lens [L6] is 17 and 18, and these two aspheric parameters of lens are as shown in table 7 below:
Table 7. embodiment 3 aspheric surface parameters
According to the projection lens that above-mentioned imaging system and each lens parameter draw, its ray tracing figure as shown in figure 12; Full visual field optical transfer function MTF under the 66lp/mm spatial frequency〉47.7%, as shown in figure 13; Maximum distortion only 0.5%, as shown in figure 14; This imaging system chromatic longitudiinal aberration is 3.7 microns to the maximum, as shown in figure 15.
The embodiment of the invention 4 only will be illustrated with embodiment 1 different piece, the imaging system that present embodiment 4 provides, FOV.=33.43 ° of its projection imaging system angle of half field-of view, projection imaging system focal distance f '=12.0mm; The object space NA=0.2316 of projection imaging system.Lens subassembly is arranged in order as shown in figure 16 to the display screen direction from light-splitting device, and wherein, [L4] is sphere crescent moon lens, sphere biconvex lens [L2] with form cemented doublet with sphere biconcave lens [L3] gummed.The parameter of projection lens is as shown in table 8 below:
Table 8. embodiment 4 lens arrangement parameters
Two surperficial sequence numbers of aspheric surface biconvex lens [L1] are 6 and 7, and the surperficial sequence number of aspheric surface crescent moon lens [L6] is 17 and 18, and these two aspheric parameters of lens are as shown in table 9 below:
Table 9. embodiment 4 aspheric surface parameters
According to the projection lens that above-mentioned imaging system and each lens parameter draw, its ray tracing figure as shown in figure 17; Full visual field optical transfer function MTF under the 66lp/mm spatial frequency〉47.9%, as shown in figure 18; Maximum distortion only 0.5%, as shown in figure 19; This imaging system chromatic longitudiinal aberration is 3.8 microns to the maximum, as shown in figure 20.
The embodiment of the invention 5 only will be illustrated with embodiment 1 different piece, the imaging system that present embodiment 5 provides, FOV.=29.39 ° of its projection imaging system angle of half field-of view, projection imaging system focal distance f '=14.0mm; The object space NA=0.204 of projection imaging system.Lens subassembly is arranged in order as shown in figure 21 to the display screen direction from light-splitting device, and wherein, [L4] is sphere crescent moon lens.The parameter of projection lens is as shown in table 10 below:
Table 10. embodiment 5 lens arrangement parameters
Two surperficial sequence numbers of aspheric surface biconvex lens [L1] are 6 and 7, and the surperficial sequence number of aspheric surface crescent moon lens [L6] is 17 and 18, and these two aspheric parameters of lens are as shown in table 9 below:
Table 11. embodiment 5 aspheric surface parameters
According to the projection lens that above-mentioned imaging system and each lens parameter draw, its ray tracing figure as shown in figure 22; Full visual field optical transfer function MTF under the 66lp/mm spatial frequency〉46.1%, as shown in figure 23; Maximum distortion only 0.5%, as shown in figure 24; This imaging system chromatic longitudiinal aberration is 3.7 microns to the maximum, as shown in figure 25.
Embodiment 6
The embodiment of the invention 6 only will be illustrated with embodiment 1 different piece, the imaging system that present embodiment 6 provides, FOV.=33.43 ° of its projection imaging system angle of half field-of view, projection imaging system focal distance f '=14.0mm; The object space NA=0.2316 of projection imaging system.Lens subassembly is arranged in order as shown in figure 26 to the display screen direction from light-splitting device, and wherein, [L4] is sphere crescent moon lens.The parameter of projection lens is as shown in table 12 below:
Table 12. embodiment 6 lens arrangement parameters
Two surperficial sequence numbers of aspheric surface biconvex lens [L1] are 6 and 7, and the surperficial sequence number of aspheric surface crescent moon lens [L6] is 17 and 18, and these two aspheric parameters of lens are as shown in table 13 below:
Table 13. embodiment 6 aspheric surface parameters
According to the projection lens that above-mentioned imaging system and each lens parameter draw, its ray tracing figure as shown in figure 27; Full visual field optical transfer function MTF under the 66lp/mm spatial frequency〉43.7%, as shown in figure 28; Maximum distortion only 0.5%, as shown in figure 29; This imaging system chromatic longitudiinal aberration is 3.7 microns to the maximum, as shown in figure 30.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (10)
1. a projection lens comprises lens subassembly, and this lens subassembly and display device, light-splitting device and display screen curtain consist of projection imaging system, and it is characterized in that: described imaging system satisfies following Parameter Conditions:
29°≤FOV.≤39°，
10.0mm≤f’≤14.0mm，
0.204≤NA≤0.232。
Wherein: FOV. represents the projection imaging system angle of half field-of view, f ' expression projection imaging system focal length, and NA represents the object space numerical aperture of projection imaging system.
2. projection lens according to claim 1, it is characterized in that: described lens subassembly comprises the lens that are arranged in order: aspheric surface biconvex lens [L1]; Sphere biconvex lens [L2]; Sphere biconcave lens [L3]; Sphere crescent moon or plano-convex lens [L4] have convex surface in display device one side; Sphere biconvex lens [L5]; Aspheric surface crescent moon lens [L6] have convex surface in screen one side; Diaphragm is positioned between sphere crescent moon or plano-convex lens [L4] and the aspheric surface crescent moon lens [L5].
3. projection lens according to claim 1 and 2, it is characterized in that: described sphere biconvex lens [L2] and sphere biconcave lens [L3] gummed form cemented doublet, or sphere biconvex lens [L2], sphere biconcave lens [L3] and sphere crescent moon or plano-convex lens [L4] gummed formation three balsaming lenss.
4. projection lens according to claim 3, it is characterized in that: described aspheric surface biconvex lens [L1] and aspheric surface crescent moon lens [L6] have an aspheric surface at least, and aspheric shape draws by following polynomial expression:
Wherein Z represents that point on the aspheric surface is from the distance of aspheric surface summit at optical axis direction; R represents that point on the aspheric surface is to the distance of optical axis; C represents aspheric curvature of centre; K represents rate of taper; a
4, a
6, a
8, a
10Expression aspheric surface high-order term coefficient.
5. projection lens according to claim 3, it is characterized in that: the center radius of former and later two faces of described aspheric surface biconvex lens [L1] is respectively: 2＜R11/f '＜2.45 and-2.2＜R12/f '＜-1.8; Thickness is: 0.45＜T1/f '＜0.7; Refractive index Nd〉1.48, abbe number Vd〉50; Focal length is: 1.9＜f1 '/f '＜2.3.
6. projection lens according to claim 3, it is characterized in that: the center radius of former and later two faces of described sphere biconvex lens [L2] is respectively: 1.8＜R21/f '＜2.8 and-4.85＜R22/f '＜-2.2; Thickness is: 0.25＜T2/f '＜0.6; Refractive index Nd:〉1.48, abbe number Vd〉50; Focal length is: 1.75＜f2 '/f '＜3.1; With the center distance of lens [L1] be: 0.008＜D1/f '＜0.45.
7. projection lens according to claim 3, it is characterized in that: the center radius of former and later two faces of described sphere biconcave lens [L3] is respectively :-4.85＜R31/f '＜-2.2 and 1.0＜R32/f '＜1.7; Thickness is: 0.08＜T3/f '＜0.15; Refractive index Nd:〉1.7, abbe number Vd＜35; Focal length is :-1.3＜f3 '/f '＜-1.0.
8. projection lens according to claim 3, it is characterized in that: the center radius of described sphere crescent moon or former and later two faces of plano-convex lens [L4] is respectively: 1.0＜R41/f '＜1.7 and 2.6＜R42/f '＜∞; Thickness is: 0.2＜T4/f '＜0.35; Refractive index Nd:〉1.48, abbe number Vd〉50; Focal length is: 1.8＜f4 '/f '＜4.4; With the Center Gap of lens [L3] be: 0＜D3/f '＜0.15; With the Center Gap of diaphragm be: 0.7＜D4/f '＜1.
9. projection lens according to claim 3, it is characterized in that: the center radius of former and later two faces of described sphere biconvex lens [L5] is respectively: 2.8＜R51/f '＜5.1 and-5.1＜R52/f '＜-2.8; Thickness is: 0.2＜5/f '＜0.7; Refractive index Nd:〉1.7, abbe number Vd＜50; Focal length is: 1.85＜f5 '/f '＜2.5; With the Center Gap of diaphragm be: 0.4＜D
s/ f '＜0.8.
10. projection lens according to claim 3, it is characterized in that: the center radius of former and later two faces of described aspheric surface crescent moon lens [L6] is respectively :-0.71＜R
61/ f '＜-0.58 and-80.0＜R
62/ f '＜-4.2; Thickness is: 0.12＜T
5/ f '＜0.25; Refractive index Nd:〉1.48, abbe number Vd〉50; Focal length is :-1.6＜f6 '/f '＜-1.1; With the Center Gap of lens [L5] be: 0.8＜D5/f '＜2.0.
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| CN201210419363.XA CN102937739B (en) | 2012-10-29 | 2012-10-29 | Projection camera lens |
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|---|---|---|---|
| CN201210419363.XA CN102937739B (en) | 2012-10-29 | 2012-10-29 | Projection camera lens |
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| CN102937739A true CN102937739A (en) | 2013-02-20 |
| CN102937739B CN102937739B (en) | 2014-12-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9798118B2 (en) | 2015-08-04 | 2017-10-24 | Coretronic Corporation | Projection display apparatus and projection lens module thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002341242A (en) * | 2001-05-21 | 2002-11-27 | Matsushita Electric Ind Co Ltd | Projection lens and projector using the same |
| US20100053774A1 (en) * | 2008-09-01 | 2010-03-04 | Tomoyuki Baba | Small projection lens and projection display device using the same |
| JP2011053508A (en) * | 2009-09-03 | 2011-03-17 | Fujifilm Corp | Projection type variable focus lens and projection type display device |
| CN102279461A (en) * | 2010-06-09 | 2011-12-14 | 佳能株式会社 | Zoom lens and image projection apparatus including the same |
-
2012
- 2012-10-29 CN CN201210419363.XA patent/CN102937739B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002341242A (en) * | 2001-05-21 | 2002-11-27 | Matsushita Electric Ind Co Ltd | Projection lens and projector using the same |
| US20100053774A1 (en) * | 2008-09-01 | 2010-03-04 | Tomoyuki Baba | Small projection lens and projection display device using the same |
| JP2011053508A (en) * | 2009-09-03 | 2011-03-17 | Fujifilm Corp | Projection type variable focus lens and projection type display device |
| CN102279461A (en) * | 2010-06-09 | 2011-12-14 | 佳能株式会社 | Zoom lens and image projection apparatus including the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9798118B2 (en) | 2015-08-04 | 2017-10-24 | Coretronic Corporation | Projection display apparatus and projection lens module thereof |
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| CN102937739B (en) | 2014-12-10 |
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Address after: 518067 3C, 3D, Block CD, Building 7, Xinghua Industrial Building, No. 4, Industrial 6th Road, Huaguoshan Community, Merchants Street, Nanshan District, Shenzhen, Guangdong Province Patentee after: Shenzhen Anhua Photoelectric Technology Co.,Ltd. Address before: 518000 701, Floor 7, National Jewelry Testing Center Building, Beili South Road, Luohu District, Shenzhen, Guangdong Province Patentee before: SHENZHEN ANHUA OPTOELECTRONICS TECHNOLOGY Co.,Ltd. |
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