CN207380323U - Short focus high definition projection lens - Google Patents
Short focus high definition projection lens Download PDFInfo
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- CN207380323U CN207380323U CN201721245318.1U CN201721245318U CN207380323U CN 207380323 U CN207380323 U CN 207380323U CN 201721245318 U CN201721245318 U CN 201721245318U CN 207380323 U CN207380323 U CN 207380323U
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- concave negative
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Abstract
The utility model provides a kind of short focus high definition projection lens, is related to a kind of projection lens.The camera lens is from left to right disposed with diverging meniscus lens, non-spherical lens, bi-concave negative lens group, focusing group along radiation direction, lenticular lens systems field lens, apochromat group, dioptric lens group, the bi-concave negative lens group is made of 2 double-concave negative lens, the focusing group is made of 2 double-concave negative lens and 1 biconvex positive lens, the dioptric lens group is made of 2 biconcave lens and 1 biconvex lens, the achromatic lens group is made of 2 biconcave lens and 2 biconvex lens, and the dioptric lens group is made of 1 biconvex lens and 1 biconvex lens.The projection lens stability is good, and high resolution, good manufacturability is easily assembled to, and is produced on a large scale.
Description
Technical field
The utility model is related to a kind of projection lens, and in particular to a kind of short focus high definition projection lens.
Background technology
With social development, there is the highlighted laser engineering projector using laser as light source, meanwhile, the hair of cinematic industry
Exhibition, which has also expedited the emergence of, requires high brightness, short distance projection large scale, the film engineering projector of high-resolution.At present, throwing in the market
Shadow machine cannot all meet high brightness, short distance projection large scale, the growth requirement of high-resolution simultaneously.Particularly with projection lens,
In order to ensure that the performance of packaging efficiency and product is stablized, conventionally employed is to improve design requirement, receive tight part processing request
Ensure the properties of product and packaging efficiency of camera lens.These measures would generally increase product cost, and the production of scale for into
This requires higher, reduces cost, ensures that packaging efficiency and properties of product stability are most important.
The patent of Publication No. CN204287589U discloses a kind of short focus projection lens for projector, by optical lens
Microscope group, prism and chip are formed, and optical lens group includes the first lens, the second lens, the 3rd lens, the 4th lens, the 5th thoroughly
Mirror, the 6th lens, the 7th lens and the 8th lens, prism is between the 8th lens and chip, the 6th lens and the 7th lens
For cemented doublet, for cemented doublet between the 5th lens and the 8th lens, the 7th lens are located at the 8th lens one side, the
Four lens are between the 3rd lens and the 5th lens, and the first lens and the second lens are cemented doublet, positioned at the 3rd lens
Front, the second lens are located at the 3rd lens side, and projection lens includes 14 faces, and the 3rd face is oval aspherical, the tenth four sides
For even aspheric surface.The lens arrangement is simple, and resolution ratio is low, and resolving power deficiency needs to be further improved.
Utility model content
In view of the deficiencies of the prior art, technical problem to be solved in the utility model is to use suitable number of lenses,
According to the arrangement of each eyeglass, optimize structural technique designing, assembling product efficiency and stability can be ensured by providing one kind, short
Focal length, high brightness, projection large scale, the engineering projection lens of high-resolution.
In order to solve the above technical problems, technical solution is used by the utility model：A kind of short focus high definition projection lens
Diverging meniscus lens 1, non-spherical lens 2, bi-concave negative lens group, focusing group, double is from left to right disposed with along radiation direction
Convex systems field lens 8, achromatic lens group, dioptric lens group, the bi-concave negative lens group is by 3 He of the first double-concave negative lens
Second double-concave negative lens 4 form, and the focusing group is by the 3rd double-concave negative lens 5, the 4th double-concave negative lens 6 and biconvex positive lens 7
Composition, the dioptric lens group is made of the first biconcave lens 9, the first biconvex lens 10 and the second biconcave lens 11, described to disappear
Aberration lens group is made of the 3rd biconcave lens 12, the second biconvex lens 13, the 4th biconcave lens 14 and the 3rd biconvex lens 15,
The dioptric lens group is made of the 4th biconvex lens 16 and the 5th biconvex lens 17.
The short focus high definition projection lens effective focal length is 9.5mm, lens aperture value is F2.4.
Short focus high definition projection lens resolving power under 100 inches to 250 inches projection images:Center resolution is
80-90lp/mm, periphery resolution ratio are 66lp/mm.
The projection of the short focus high definition projection lens is compared for 0.65.
2 material of non-spherical lens be plastic material, diverging meniscus lens 1, bi-concave negative lens group, focusing group, biconvex
Lens system field lens 8, achromatic lens group and dioptric lens group material are glass material.
Compared with prior art, the beneficial effects of the utility model are as follows：The utility model provides a kind of 17 lens groups
The short focus high definition projection lens of conjunction are continued to optimize by the quantity of camera lens, the arrangement of camera lens, process structure, finally obtained
High definition projection lens good in optical property is easy to buying processing, and focal length is short, and good imaging quality, projection size is big, and projection brightness is high,
And the short focus high definition projection lens craftsmanship is strong, is easily assembled to, and properties of product stability is good, is suitble to large-scale production.
Description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1：The optical system diagram of the utility model；
Fig. 2：The structural manufacturing process fixed form figure of the utility model；
Fig. 3：The MTF curve figure of the utility model.
Specific embodiment
The utility model in order to better understand is further fairly set out in the utility model with reference to embodiment
Hold, but the protection content of the utility model is not limited solely to the following examples.In the following description, a large amount of tools are given
The details of body more thoroughly understands in order to provide to the utility model.It is however, aobvious and easy to those skilled in the art
See, the utility model may not need one or more of these details and be carried out.
Shown in Fig. 1, the utility model short focus high definition projection lens are from left to right disposed with negative bent moon along radiation direction
Lens 1, non-spherical lens 2, bi-concave negative lens group, focusing group, lenticular lens systems field lens 8, achromatic lens group, dioptric are saturating
Microscope group, the bi-concave negative lens group are made of the first double-concave negative lens 3 and the second double-concave negative lens 4, and the focusing group is by
Three double-concave negative lens 5, the 4th double-concave negative lens 6 and biconvex positive lens 7 form, the dioptric lens group by the first biconcave lens 9,
First biconvex lens 10 and the second biconcave lens 11 form, and the achromatic lens group is by the 3rd biconcave lens 12, the second biconvex
Lens 13, the 4th biconcave lens 14 and the 3rd biconvex lens 15 form, and the dioptric lens group is by the 4th biconvex lens 16 and
Five biconvex lens 17 form.
The high definition projection lens use structure work shown in Fig. 2 using 17 lens optical system structures as shown in Figure 1
Skill fixed design form can ensure that assembling product efficiency is stablized with performance, and high resolution, good manufacturability is produced on a large scale.
The projection lens structural manufacturing process fixed form design in, as shown in Figure 2, by cam canister, focusing ring and
Straight tube realizes high-precision zoom and focusing.
The attainable performance parameter of high definition projection lens institute of the utility model is：Effective focal length 9.5mm, lens aperture value
For F2.4, the resolving power MTF under 100 inches to 250 inches projection images:Center resolution is 80-90lp/mm（flare<
0.5pixels), periphery resolution ratio is 66lp/mm（flare<1.5 pixels）(as shown in Figure 3).
To meet the requirement of above-mentioned performance parameter, below by embodiment to the structural parameters of each lens in projection lens
It is further described.
In Fig. 1, from left to right lens parameter structural parameters such as table 1；
Table 1
Finally illustrate, above example is merely intended for describing the technical solutions of the present application, but not for limiting the present application, this field
Other modifications or equivalent substitution that those of ordinary skill makes the technical solution of the utility model, without departing from this practicality
The spirit and scope of new technique scheme should all cover among the right of the utility model.
Claims (5)
1. a kind of short focus high definition projection lens, it is characterised in that：Diverging meniscus lens is from left to right disposed with along radiation direction
(1), non-spherical lens (2), bi-concave negative lens group, focusing group, lenticular lens systems field lens（8）, achromatic lens group, dioptric
Lens group, the bi-concave negative lens group are made of the first double-concave negative lens (3) and the second double-concave negative lens (4), the focusing
Group is made of the 3rd double-concave negative lens (5), the 4th double-concave negative lens (6) and biconvex positive lens (7), and the dioptric lens group is by
One biconcave lens（9）, the first biconvex lens (10) and the second biconcave lens (11) composition, the achromatic lens group is by the 3rd pair
Concavees lens (12), the second biconvex lens (13), the 4th biconcave lens (14) and the 3rd biconvex lens (15) composition, the dioptric are saturating
Microscope group is made of the 4th biconvex lens (16) and the 5th biconvex lens (17).
2. short focus high definition projection lens as described in claim 1, it is characterised in that：The short focus high definition projection lens are effectively burnt
Away from being F2.4 for 9.5mm, lens aperture value.
3. short focus high definition projection lens as described in claim 1, it is characterised in that：The short focus high definition projection lens are 100
Inch is to the resolving power under 250 inches of projection images:Center resolution is 80-90lp/mm, periphery resolution ratio is 66lp/mm.
4. short focus high definition projection lens as described in claim 1, it is characterised in that：The projection of the short focus high definition projection lens
Than for 0.65.
5. short focus high definition projection lens as described in claim 1, it is characterised in that：Non-spherical lens (2) material is modeling
Expect material, diverging meniscus lens (1), bi-concave negative lens group, focusing group, lenticular lens systems field lens（8）, achromatic lens group and
Dioptric lens group material is glass material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721245318.1U CN207380323U (en) | 2017-09-27 | 2017-09-27 | Short focus high definition projection lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721245318.1U CN207380323U (en) | 2017-09-27 | 2017-09-27 | Short focus high definition projection lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207380323U true CN207380323U (en) | 2018-05-18 |
Family
ID=62341440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721245318.1U Expired - Fee Related CN207380323U (en) | 2017-09-27 | 2017-09-27 | Short focus high definition projection lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207380323U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633868A (en) * | 2019-02-19 | 2019-04-16 | 南阳南方智能光电有限公司 | The micro- throwing projection lens of burnt high definition in one kind |
| CN110873943A (en) * | 2018-08-31 | 2020-03-10 | 佳凌科技股份有限公司 | Optical imaging lens |
-
2017
- 2017-09-27 CN CN201721245318.1U patent/CN207380323U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873943A (en) * | 2018-08-31 | 2020-03-10 | 佳凌科技股份有限公司 | Optical imaging lens |
| CN109633868A (en) * | 2019-02-19 | 2019-04-16 | 南阳南方智能光电有限公司 | The micro- throwing projection lens of burnt high definition in one kind |
| CN109633868B (en) * | 2019-02-19 | 2021-06-01 | 南阳南方智能光电有限公司 | Medium-focus high-definition micro-projection lens |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180518 Termination date: 20210927 |