CN209311773U - A kind of advertisement projection lens - Google Patents
A kind of advertisement projection lens Download PDFInfo
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- CN209311773U CN209311773U CN201920235250.1U CN201920235250U CN209311773U CN 209311773 U CN209311773 U CN 209311773U CN 201920235250 U CN201920235250 U CN 201920235250U CN 209311773 U CN209311773 U CN 209311773U
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Abstract
This application provides a kind of advertisement projection lens, comprising: first group's glass lens, aperture diaphragm, second group's glass lens, light-splitting device and the image source face coaxially set gradually；First group glass lens is positive focal length, and the focal length of first group glass lens is 39 < f11 < 42；Second group glass lens is positive focal length, and the focal length of second group glass lens is 15 < f12 < 18.A kind of advertisement projection lens provided by the present application, the race coke phenomenon generated using glass material to avoid high temperature, and numerical aperture is improved by optical design, meet demand of high brightness.
Description
Technical field
This application involves projection lens technical field more particularly to a kind of advertisement projection lens.
Background technique
As the form of New Media Technology is increasingly diversified and increasingly mature, projection light machine is with small in size, shadowgraph
The big and at low cost advantage in face is widely used.
It is projected compared to family, advertisement projection device needs higher brightness and runs incessantly for a long time, or even can
It can need to work in outdoor environment, therefore have higher requirement for the stability of projection device.It is most of on the market at present
Projection lens uses plastic aspherical element eyeglass, but plastic material non-refractory, is easy jaundice and is easy to be scratched damage, when long
Between highlight under operation, be easy to be affected by temperature and occur to run burnt situation, it is therefore desirable to provide a kind of advertisement projection lens to meet
Long-time stable uses, does not run demand burnt and of high brightness in advertisement projection.
Summary of the invention
The embodiment of the present application provides a kind of advertisement projection lens, meets durable, does not run demand burnt and of high brightness.
In view of this, the application first aspect provides a kind of advertisement projection lens, comprising:
First group's glass lens, aperture diaphragm, second group's glass lens, light-splitting device and the picture coaxially set gradually
Source face；
First group glass lens is positive focal length, and the focal length of first group glass lens is 39 < f11 < 42；
Second group glass lens is positive focal length, and the focal length of second group glass lens is 15 < f12 < 18.
Optionally, first group glass lens include the first eyeglass, the second eyeglass, third eyeglass, the 4th eyeglass and
5th eyeglass；
First eyeglass is with positive light coke planoconvex eyeglass；Second eyeglass is with negative power convex-concave
Eyeglass；The third eyeglass is with negative power double concave type eyeglass；4th eyeglass is with positive light coke curved month type mirror
Piece；5th eyeglass is with positive light coke planoconvex eyeglass.
Optionally, the effective focal length of first eyeglass is 46.15 < f1 < 48.15；The effective focal length of second eyeglass
For -25.88 < f2 < -23.88；The effective focal length of the third eyeglass is 12.27 < f3 < -10.27；4th eyeglass has
Effect focal length is 41.49 < f4 < 43.49；The effective focal length of 5th eyeglass is 23.61 < f5 < 25.61.
Optionally, a surface is spherical surface in two surfaces of first eyeglass, another surface is plane；Described
Two surfaces of two eyeglasses are spherical surface；Two surfaces of the third eyeglass are spherical surface；Two tables of the 4th eyeglass
Face is spherical surface, and two surfaces of the 4th eyeglass are backwards to the aperture diaphragm；In two surfaces of the 5th eyeglass
One surface is spherical surface, another surface is plane, and spherical surface is towards the aperture diaphragm.
Optionally, in first group glass lens, first eyeglass, second eyeglass, the third eyeglass,
4th eyeglass and the 5th eyeglass are glass lens.
Optionally, second group glass lens include the 6th eyeglass, the 7th eyeglass, the 8th eyeglass, the 9th eyeglass and
Tenth eyeglass；
6th eyeglass is with positive light coke biconvex eyeglass；7th eyeglass is with negative power double concave type
Eyeglass；8th eyeglass is with positive light coke planoconvex eyeglass；9th eyeglass is with positive light coke biconvex mirror
Piece；Tenth eyeglass is with positive light coke convex-concave eyeglass.
Optionally, the effective focal length of the 6th eyeglass is 9.97 < f6 < 11.97；The effective focal length of 7th eyeglass
For -8.63 < f7 < -6.63；The effective focal length of 8th eyeglass is 37.37 < f8 < 39.37；Effective coke of 9th eyeglass
Away from for 29.88 < f9 < 31.88；The effective focal length of tenth eyeglass is 29.55 < f10 < 31.55.
Optionally, two surfaces of the 6th eyeglass are spherical surface, and two surface mean curvatures of the 6th eyeglass
The small surface of radius is towards the aperture diaphragm；Two of 7th eyeglass are spherical surface, and two of the 7th eyeglass
Mean curvature radius small surface in surface is towards the aperture diaphragm；A surface is ball in two surfaces of the 8th eyeglass
Face, another surface are plane, and the small surface of two surface mean curvature radiuses of the 8th eyeglass is towards the aperture light
Door screen；Two surfaces of the 9th eyeglass are spherical surface, and the big surface of two surface mean curvature radiuses of the 9th eyeglass
Towards the aperture diaphragm；Two surfaces of the tenth eyeglass are spherical surface, and two surfaces of the tenth eyeglass are carried on the back
To the aperture diaphragm.
Optionally, in second group glass lens, the 6th eyeglass, the 7th eyeglass, the 8th eyeglass,
9th eyeglass and the tenth eyeglass are glass lens.
Optionally, protection glass is additionally provided between the light-splitting device and the image source face.
As can be seen from the above technical solutions, the embodiment of the present application has the advantage that
In the embodiment of the present application, a kind of advertisement projection lens is provided, comprising: the first group's glass coaxially set gradually
Lens, diaphragm, second group's glass lens, light-splitting device and image source face；First group glass lens is positive focal length, described
The focal length of first group's glass lens is 39 < f11 < 42；Second group glass lens is positive focal length, second group
The focal length of glass lens is 15 < f12 < 18.A kind of advertisement projection lens provided by the present application, using glass material to avoid height
Warm and generation race coke phenomenon, and numerical aperture is improved by optical design, meet demand of high brightness.
Detailed description of the invention
Fig. 1 is a kind of optical structure chart of advertisement projection lens in the embodiment of the present application；
Fig. 2 is a kind of each visual field chip face transmission function MTF figure of advertisement projection lens in the embodiment of the present application；
Fig. 3 is a kind of curvature of field and distortion figure of advertisement projection lens in the embodiment of the present application；
Fig. 4 is a kind of chromatic longitudiinal aberration figure of the advertisement projection lens provided in the embodiment of the present application.
Specific embodiment
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is only this
Apply for a part of the embodiment, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall in the protection scope of this application.
The application devises a kind of advertisement projection lens, meets durable, does not run demand burnt and of high brightness.
In order to make it easy to understand, referring to Fig. 1, Fig. 1 is the structural schematic diagram of advertisement projection lens in the embodiment of the present application, such as
Shown in Fig. 1, specifically:
First group's glass lens, aperture diaphragm, second group's glass lens, light-splitting device and the picture coaxially set gradually
Source face；
First group's glass lens is positive focal length, and the focal length of first group's glass lens is 39 < f11 < 42；
Second group's glass lens is positive focal length, and the focal length of second group's glass lens is 15 < f12 < 18.
It should be noted that light-splitting device is prism in the embodiment of the present application.
In the embodiment of the present application, a kind of advertisement projection lens is provided, comprising: the first group's glass coaxially set gradually
Lens, aperture diaphragm, second group's glass lens, light-splitting device and image source face；First group glass lens is positive focal length,
The focal length of first group's glass lens is 39 f11 < 42 <；Second group's glass lens is positive focal length, second group's glass lens
Focal length be 15 < f12 < 18.A kind of advertisement projection lens provided by the present application, is generated using glass material to avoid high temperature
Race coke phenomenon, and numerical aperture is improved by optical design, meets demand of high brightness.
Further, first group's glass lens includes the first eyeglass G1, the second eyeglass G2, third eyeglass G3, the 4th mirror
Piece G4 and the 5th eyeglass G5；
First eyeglass G1 is with positive light coke planoconvex eyeglass；Second eyeglass G2 is with negative power convex-concave mirror
Piece；Third eyeglass G3 is with negative power double concave type eyeglass；4th eyeglass G4 is with positive light coke curved month type eyeglass；5th
Eyeglass G5 is with positive light coke planoconvex eyeglass.
Further, the effective focal length of the first eyeglass G1 is 46.15 < f1 < 48.15；The effective focal length of second eyeglass G2 be-
25.88 < f2 < -23.88；The effective focal length of third eyeglass G3 is 12.27 < f3 < -10.27；The effective focal length of 4th eyeglass G4 is
41.49<f4<43.49；The effective focal length of 5th eyeglass G5 is 23.61 f5 < 25.61 <.
Further, a surface is spherical surface in two surfaces of the first eyeglass G1, another surface is plane；Second mirror
Two surfaces of piece G2 are spherical surface；Two surfaces of third eyeglass G3 are spherical surface；Two surfaces of 4th eyeglass G4 are
Spherical surface, and two surfaces of the 4th eyeglass G4 are backwards to aperture diaphragm；A surface is spherical surface in two surfaces of 5th eyeglass G5,
Another surface is plane, and spherical surface is towards aperture diaphragm.
Further, in first group's glass lens, the first eyeglass G1, the second eyeglass G2, third eyeglass G3, the 4th eyeglass
G4 and the 5th eyeglass G5 is glass lens.
Further, second group's glass lens includes the 6th eyeglass G6, the 7th eyeglass G7, the 8th eyeglass G8, the 9th mirror
Piece G9 and the tenth eyeglass G10；
6th eyeglass G6 is with positive light coke biconvex eyeglass；7th eyeglass G7 is with negative power double concave type mirror
Piece；8th eyeglass G8 is with positive light coke planoconvex eyeglass；9th eyeglass G9 is with positive light coke biconvex eyeglass；Tenth
Eyeglass G10 is with positive light coke convex-concave eyeglass.
Further, the effective focal length of the 6th eyeglass G6 is 9.97 < f6 < 11.97；The effective focal length of 7th eyeglass G7 be-
8.63<f7<-6.63；The effective focal length of 8th eyeglass G8 is 37.37 < f8 < 39.37；The effective focal length of 9th eyeglass G9 is
29.88<f9<31.88；The effective focal length of tenth eyeglass G10 is 29.55 < f10 < 31.55.
Further, two surfaces of the 6th eyeglass G6 are spherical surface, and two surface mean curvatures of the 6th eyeglass G6 half
The small surface of diameter is towards aperture diaphragm；Two of 7th eyeglass G7 are spherical surface, and two surface mean curvatures of the 7th eyeglass G7
The small surface of radius is towards aperture diaphragm；A surface is spherical surface in two surfaces of 8th eyeglass G8, another surface is flat
Face, and the small surface of two surface mean curvature radiuses of the 8th eyeglass G8 is towards aperture diaphragm；Two surfaces of 9th eyeglass G9
It is spherical surface, and the big surface of two surface mean curvature radiuses of the 9th eyeglass G9 is towards aperture diaphragm；Tenth eyeglass G10's
Two surfaces are spherical surface, and two surfaces of the tenth eyeglass G10 are backwards to aperture diaphragm.
Further, in second group's glass lens, the 6th eyeglass G6, the 7th eyeglass G7, the 8th eyeglass G8, the 9th eyeglass
G9 and the tenth eyeglass G10 is glass lens.
Further, protection glass is additionally provided between light-splitting device and image source face.
It should be noted that in an a kind of application examples of advertisement projection lens provided by the present application, each eyeglass it is specific
Parameter is as shown in table 1:
Table 1:
Wherein parameter includes the thickness of each eyeglass, spacing, the refractive index Nd (Refractive index) of each eyeglass, curvature
Radius R (Radius of curvature), the Abbe system of numerical aperture F/NO, focal length F (Focus Length) and each eyeglass
Number Vd (Abbe number).
Specifically:
First eyeglass G1 is to have positive light coke planoconvex saturating using glass material (nd=1.52, vd=64.2) is made
Mirror, a surface is spherical surface in two surfaces, another surface is plane, and the effective focal length of the first eyeglass G1 is 46.15 < f1
< 48.15.
Second eyeglass G2 is to have negative power convex-concave saturating using glass material (nd=1.61, vd=64.6) is made
Mirror, two surfaces are spherical surface, and the effective focal length of the second eyeglass G2 is -25.88 < f2 < -23.88.
Third eyeglass G3 is to have negative power double concave type saturating using glass material (nd=1.83, vd=37.2) is made
Mirror, two surfaces are spherical surface, and the effective focal length of third eyeglass G3 is 12.27 < f3 < -10.27.
4th eyeglass G4 is to have positive light coke curved month type saturating using glass material (nd=1.85, vd=23.8) is made
Mirror, two of them surface is backwards to aperture diaphragm, and two surfaces are spherical surface, and the effective focal length of the 4th eyeglass G4 is 41.49 <
f4<43.49。
5th eyeglass G5 is to have positive light coke planoconvex saturating using glass material (nd=1.85, vd=23.8) is made
Mirror, wherein towards aperture diaphragm aspect, and in two surfaces, a surface is spherical surface to spherical surface, another surface is plane, the 5th mirror
The effective focal length of piece G5 is 23.61 < f5 < 25.61.
6th eyeglass G6 is to have positive light coke biconvex saturating using glass material (nd=1.75, vd=35.0) is made
Mirror, wherein more convex towards aperture diaphragm, and two surfaces are spherical surface, the effective focal length of the 6th eyeglass G6 be 9.97 < f6 <
11.97。
7th eyeglass G7 is to have negative power double concave type saturating using glass material (nd=1.85, vd=23.8) is made
Mirror, wherein more curved facing towards aperture diaphragm, and two surfaces are spherical surface, and the effective focal length of the 7th eyeglass G7 is -8.63 <
f7<-6.63。
8th eyeglass G8 is to have positive light coke planoconvex saturating using glass material (nd=1.52, vd=64.2) is made
Mirror, wherein it is more curved facing towards aperture diaphragm, and a surface is spherical surface in two surfaces, another surface is plane, the
The effective focal length of eight eyeglass G8 is 37.37 < f8 < 39.37.
9th eyeglass G9 is to have positive light coke biconvex saturating using glass material (nd=1.60, vd=65.5) is made
Mirror, wherein compared with plane towards aperture diaphragm, and two surfaces are spherical surface, the effective focal length of the 9th eyeglass G9 be 29.88 < f9 <
31.88。
Tenth eyeglass G10 is to have positive light coke convex-concave using glass material (nd=1.65, vd=55.9) is made
Lens, two surfaces are backwards to aperture diaphragm, and two surfaces are spherical surface, and the effective focal length of the tenth eyeglass G10 is 29.55 <
f10<31.55。
It referring to fig. 2, is a kind of each visual field chip face transmission function of the advertisement projection lens provided in the embodiment of the present application
Mtf value, MTF (English name: Modulation Transfer Function) index are that current camera lens is most accurate and scientific
Evaluation criterion.Ordinate is contrast, and closer to 1, it is more perfect to represent lens imaging.Abscissa represents resolution ratio, the every milli of unit
Rice noodles logarithm.For the image source pixel size that the application uses for 5.4um, corresponding design resolution is 93 lines to every millimeter.Projection
Camera lens generally at least requires the MTF numerical value of each visual field to reach 0.3 or more in design resolution, and each visual field of the application
For mtf value substantially 0.5 or more, imaging effect is outstanding.
Fig. 3 is the curvature of field and distortion figure of a kind of advertisement projection lens provided in the embodiment of the present application, and left figure is in Fig. 3
Curvature of field evaluation figure, right figure are distortion evaluation figure.Ordinate represents the field of view angle of the camera lens.The abscissa of curvature of field figure represents the curvature of field
The abscissa of the size of value, distortion figure represents amount of distortion.Distortion is a very important index of projection lens, is generally all needed
It controls within 3%, for the amount of distortion of the application within 1%, aberration control is outstanding.
Fig. 4 is the chromatic longitudiinal aberration figure of a kind of advertisement projection lens provided in the embodiment of the present application, and in Fig. 4, abscissa is
Numerical values recited, unit micron.In Fig. 4 on the basis of dominant wavelength, draws between blue light, feux rouges and green light (dominant wavelength) and respectively regard respectively
The value of chromatism of field.Projection lens generally requires value of chromatism within an image source pixel size, the chromatic longitudiinal aberration control of the application
Within 2.4um, less than 0.5 pixel size (that is: 2.7um), color difference control is very outstanding.
Compared with prior art:
1, a kind of advertisement projection lens of the application is compact-sized, and imaging effect is excellent, and numerical aperture is big, facilitates bright
The raising of degree.
2, a kind of all eyeglass materials of advertisement projection lens of the application are glass, are conducive to improve advertisement projection lens
The durability of head avoids burnt there is a situation where running.
3, the application can be applicable to a variety of image source displaying schemes, such as DMD, laser, LCOS, LCD.
4, the application uses three pieces of plano-convex lens, effectively reduces grinding cost under the requirement for meeting image quality.
The description of the present application and term " first " in above-mentioned attached drawing, " second ", " third ", " the 4th " etc. are (if deposited
) it is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that use in this way
Data are interchangeable under appropriate circumstances, so that embodiments herein described herein for example can be in addition to illustrating herein
Or the sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units need not limit
In step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, produce
The other step or units of product or equipment inherently.
It should be appreciated that in this application, " at least one (item) " refers to one or more, and " multiple " refer to two or two
More than a."and/or" indicates may exist three kinds of relationships, for example, " A and/or B " for describing the incidence relation of affiliated partner
It can indicate: only exist A, only exist B and exist simultaneously tri- kinds of situations of A and B, wherein A, B can be odd number or plural number.Word
Symbol "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or"." at least one of following (a) " or its similar expression, refers to
Any combination in these, any combination including individual event (a) or complex item (a).For example, at least one in a, b or c
Item (a), can indicate: a, b, c, " a and b ", " a and c ", " b and c ", or " a and b and c ", and wherein a, b, c can be individually,
It can be multiple.
The above, above embodiments are only to illustrate the technical solution of the application, rather than its limitations；Although referring to before
Embodiment is stated the application is described in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope of each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of advertisement projection lens characterized by comprising
First group's glass lens, aperture diaphragm, second group's glass lens, light-splitting device and the image source coaxially set gradually
Face；
First group glass lens is positive focal length, and the focal length of first group glass lens is 39 < f11 < 42；
Second group glass lens is positive focal length, and the focal length of second group glass lens is 15 < f12 < 18.
2. advertisement projection lens according to claim 1, which is characterized in that
First group glass lens includes the first eyeglass, the second eyeglass, third eyeglass, the 4th eyeglass and the 5th eyeglass；
First eyeglass is with positive light coke planoconvex eyeglass；Second eyeglass is with negative power convex-concave mirror
Piece；The third eyeglass is with negative power double concave type eyeglass；4th eyeglass is with positive light coke curved month type eyeglass；
5th eyeglass is with positive light coke planoconvex eyeglass.
3. advertisement projection lens according to claim 2, which is characterized in that the effective focal length of first eyeglass is
46.15<f1<48.15；The effective focal length of second eyeglass is -25.88 < f2 < -23.88；Effective coke of the third eyeglass
Away from for 12.27 < f3 < -10.27；The effective focal length of 4th eyeglass is 41.49 < f4 < 43.49；5th eyeglass it is effective
Focal length is 23.61 < f5 < 25.61.
4. advertisement projection lens according to claim 3, which is characterized in that
A surface is spherical surface in two surfaces of first eyeglass, another surface is plane；The two of second eyeglass
A surface is spherical surface；Two surfaces of the third eyeglass are spherical surface；Two surfaces of the 4th eyeglass are spherical surface,
And two surfaces of the 4th eyeglass are backwards to the aperture diaphragm；A surface is ball in two surfaces of the 5th eyeglass
Face, another surface is plane, and spherical surface is towards the aperture diaphragm.
5. advertisement projection lens according to claim 4, which is characterized in that described in first group glass lens
First eyeglass, second eyeglass, the third eyeglass, the 4th eyeglass and the 5th eyeglass are glass lens.
6. advertisement projection lens according to claim 1, which is characterized in that
Second group glass lens includes the 6th eyeglass, the 7th eyeglass, the 8th eyeglass, the 9th eyeglass and the tenth eyeglass；
6th eyeglass is with positive light coke biconvex eyeglass；7th eyeglass is with negative power double concave type mirror
Piece；8th eyeglass is with positive light coke planoconvex eyeglass；9th eyeglass is with positive light coke biconvex eyeglass；
Tenth eyeglass is with positive light coke convex-concave eyeglass.
7. advertisement projection lens according to claim 6, which is characterized in that the effective focal length of the 6th eyeglass is 9.97
<f6<11.97；The effective focal length of 7th eyeglass is -8.63 < f7 < -6.63；The effective focal length of 8th eyeglass is
37.37<f8<39.37；The effective focal length of 9th eyeglass is 29.88 < f9 < 31.88；The effective focal length of tenth eyeglass
For 29.55 f10 < 31.55 <.
8. advertisement projection lens according to claim 7, which is characterized in that
Two surfaces of the 6th eyeglass are spherical surface, and the small surface of two surface mean curvature radiuses of the 6th eyeglass
Towards the aperture diaphragm；Two of 7th eyeglass are spherical surface, and two surface mean curvatures of the 7th eyeglass half
The small surface of diameter is towards the aperture diaphragm；A surface is spherical surface, another surface in two surfaces of the 8th eyeglass
For plane, and the small surface of two surface mean curvature radiuses of the 8th eyeglass is towards the aperture diaphragm；9th mirror
Two surfaces of piece are spherical surface, and the big surface of two surface mean curvature radiuses of the 9th eyeglass is towards the aperture light
Door screen；Two surfaces of the tenth eyeglass are spherical surface, and two surfaces of the tenth eyeglass are backwards to the aperture diaphragm.
9. advertisement projection lens according to claim 8, which is characterized in that described in second group glass lens
6th eyeglass, the 7th eyeglass, the 8th eyeglass, the 9th eyeglass and the tenth eyeglass are glass lens.
10. advertisement projection lens according to claim 1, which is characterized in that the light-splitting device and the image source face it
Between be additionally provided with protection glass.
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|---|---|---|---|
| CN201920235250.1U CN209311773U (en) | 2019-02-25 | 2019-02-25 | A kind of advertisement projection lens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920235250.1U CN209311773U (en) | 2019-02-25 | 2019-02-25 | A kind of advertisement projection lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633871A (en) * | 2019-02-25 | 2019-04-16 | 深圳市点睛创视技术有限公司 | A kind of advertisement projection lens |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633871A (en) * | 2019-02-25 | 2019-04-16 | 深圳市点睛创视技术有限公司 | A kind of advertisement projection lens |
| CN109633871B (en) * | 2019-02-25 | 2024-04-19 | 深圳市点睛创视技术有限公司 | Advertisement projection lens |
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