CN114859634A - Light path structure component of steering projection lens - Google Patents
Light path structure component of steering projection lens Download PDFInfo
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- CN114859634A CN114859634A CN202110159384.1A CN202110159384A CN114859634A CN 114859634 A CN114859634 A CN 114859634A CN 202110159384 A CN202110159384 A CN 202110159384A CN 114859634 A CN114859634 A CN 114859634A
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- lens group
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- structure component
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- 230000003287 optical effect Effects 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000002834 transmittance Methods 0.000 abstract description 3
- 238000003384 imaging method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/142—Adjusting of projection optics
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The invention discloses a light path structure component of a steering projection lens, which is characterized by comprising a front side lens and a rear side lens group, wherein the front side lens and the rear side lens group are basically symmetrically arranged; wherein: the focal length of the front lens group is defined as 10.5mm < f1<38.5 mm; the focal length of the rear lens group is defined as 9.9mm < f1<39.9 mm. The lens constructed by the light path structural component provided by the invention can provide clear projection images under various transmittance ratios, so that the lens can adapt to more use scenes.
Description
Technical Field
The invention relates to the technical field of optics, in particular to a light path structure component of a steering projection lens, which can obtain a better projection effect.
Background
The common industrial projection lens projects a picture with a corresponding size when stripe light 3D scanning is carried out, but the common lens only has a fixed transmittance, and one projection lens can only meet the requirement of 1-2 approximate picture sizes. The lens with the fixed projection ratio can cause limited use scenes when no replaceable lens is provided, and cannot meet the requirements of most 3D scanning stripe light.
Disclosure of Invention
In view of the above technical problems in the prior art, an embodiment of the present invention provides an optical path structure assembly for a steering projection lens.
In order to solve the technical problem, the embodiment of the invention adopts the following technical scheme:
an optical path structure assembly for a steering projection lens, comprising:
a front lens group defining a focal length of the front lens group as 10.5mm < f1<38.5 mm;
a rear lens group defining a focal length of the front lens group to be 9.9mm < f1<39.9 mm; and a standard lens is arranged at the rear side of the rear lens group.
Preferably, a diaphragm is further disposed between the front lens group and the rear lens group.
Preferably, the focal length of the front lens group cooperating with the rear lens group is defined as 100mm < f1<500 mm.
Preferably, the front lens group and the rear lens group are symmetrically arranged with respect to the diaphragm.
Preferably, the front lens group is formed by combining a plurality of lenses; the rear lens group is formed by combining a plurality of lenses.
Preferably, the front lens group has at least one convex lens and one concave lens; the rear lens group has at least one convex lens and one concave lens.
Preferably, the front lens group is formed by combining 5 lenses; the rear side lens group is formed by combining 6 lenses.
Preferably, the front lens group and the rear lens group are mounted and positioned in a cylindrical member.
Preferably, the standard lens is attached to an end portion of the cylindrical member.
Preferably, the lenses in the front lens group and the lenses in the rear lens group are made of a resin material or a glass material.
Compared with the prior art, the light path structure component of the steering projection lens disclosed by the invention has the beneficial effects that:
the projection image can be provided clearly under various projection ratios, and therefore, the projection image can adapt to more use scenes.
The summary of various implementations or examples of the technology described in this disclosure is not a comprehensive disclosure of the full scope or all features of the disclosed technology.
Drawings
In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having letter suffixes or different letter suffixes may represent different instances of similar components. The drawings illustrate various embodiments, by way of example and not by way of limitation, and together with the description and claims, serve to explain the inventive embodiments. The same reference numbers will be used throughout the drawings to refer to the same or like parts, where appropriate. Such embodiments are illustrative, and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.
Fig. 1 is a schematic structural diagram of an optical path structural component of a steering projection lens according to an embodiment of the present invention.
Fig. 2 is a lens imaging MTF of a lens constructed by a light path structure component of a turning projection lens according to an embodiment of the present invention.
Fig. 3 shows lens optical distortion of a lens constructed by an optical path structure component for a steering projection lens according to an embodiment of the present invention.
Fig. 4 shows lens telecentricity of a lens constructed by the optical path structure component of the steering projection lens according to the embodiment of the invention.
Reference numerals:
1-front lens group; 2-a rear lens group; 3-a diaphragm; 4-standard lens.
Detailed Description
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
To maintain the following description of the embodiments of the present invention clear and concise, a detailed description of known functions and known components of the invention have been omitted.
As shown in fig. 1, the embodiment of the present disclosure discloses an optical path structure component of a steering projection lens, the optical path structure component is composed of a front lens group 1 and a rear lens group 2, a diaphragm 3 is disposed between the front lens group 1 and the rear lens group 2, the front lens group 1 and the rear lens group 2 are substantially symmetrical with respect to the diaphragm 3, and a standard lens 4 is disposed at the rear side of the rear lens group 2. The front lens group 1 and the rear lens group 2 are arranged symmetrically with respect to the diaphragm 3. The focal length range of the front lens group 1 is 10.5mm < f1<38.5mm, the focal length range of the rear lens group 2 is 9.9mm < f2<39.9mm, and the total lens focal length range of the combination of the front lens group 1 and the rear lens group 2 is 100mm < f total <500 mm. The ratio of the focal length of the front lens group 1 to the focal length of the rear lens group 2 is between 0.8 and 1.2, so that when the lens is used, the magnification is close to 1.
In some preferred embodiments, the front lens group 1 is formed by combining a plurality of lenses; the rear lens group 2 is formed by combining a plurality of lenses.
In some preferred embodiments, the front lens group 1 has at least one convex lens and one concave lens; the rear lens group 2 has at least one convex lens and one concave lens.
In some preferred embodiments, the front lens group 1 is composed of 5 lenses; the rear lens group 2 is formed by combining 6 lenses; the front lens group 1 and the rear lens group 2 are symmetrically arranged.
In some preferred embodiments, the front lens group 1 and the rear lens group 2 are mounted and positioned in a cylindrical member.
In some preferred solutions, a standard lens 4 is provided at the end of the cylindrical member.
In some preferred aspects, the lenses in the front lens group 1 and the lenses in the rear lens group 2 are made of a resin material or a glass material.
To ensure the matching of the lens with the industry standard lens, there is a better distortion control (optical distortion < 0.05%), there is a better relative illumination (RI > 90%) and the object space and image space of the lens are telecentric structures.
From the attached figures 2, 3 and 4, the lens has the imaging quality MTF which is close to the diffraction limit and is >0.8@93lp/mm, the optical distortion of a better distortion parameter is less than 0.05 percent, the telecentricity is less than 0.5 percent, and the requirements of the transfer projection lens can be met.
The size of the image projected by the image rotation of the lens of the pipeline structure component lens provided by the invention can be as follows: 1/4inch, 1/3inch, 1/2inch, 2/3inch, 1inch, etc. The wavelength range of the lens can be white light (420 nm-680 nm) or blue light (440 nm-470 nm). By combined use and optimization algorithm, various focal length distributions are achieved, functions can be realized, the imaging effect is the best, and the requirements of distortion and a chief ray angle are met.
The invention has the advantages that:
the projection image can be provided clearly under various transmittance, and therefore, the projection image can adapt to more use scenes.
Moreover, although exemplary embodiments have been described herein, the scope of the present invention includes any and all embodiments based on the present invention with equivalent elements, modifications, omissions, combinations (e.g., of various embodiments across), adaptations or alterations. The elements of the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the present specification or during the prosecution of the application, which examples are to be construed as non-exclusive. It is intended, therefore, that the specification and examples be considered as exemplary only, with a true scope and spirit being indicated by the following claims and their full scope of equivalents.
The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more versions thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. In addition, in the above-described embodiments, various features may be grouped together to streamline the disclosure. This should not be interpreted as an intention that a disclosed feature not claimed is essential to any claim. Rather, inventive subject matter may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations. The scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.
Claims (8)
1. A light path structure component of a steering projection lens is characterized by comprising a front side lens and a rear side lens group which are basically symmetrically arranged; wherein:
the focal length of the front lens group is defined as 10.5mm < f1<38.5 mm;
the focal length of the rear lens group is defined as 9.9mm < f2<39.9 mm;
a total lens focal length range in which the focal lengths of the front lens group and the rear lens group are combined
The circumference is defined as 100mm < ftotal <500 mm.
2. The optical path structure component of the steering projection lens as claimed in claim 1, wherein a diaphragm is further disposed between the front lens group and the rear lens group, and the front lens group and the rear lens group are substantially symmetrically disposed about the diaphragm.
3. The optical path structure component of a steering projection lens as claimed in claim 1, wherein the front lens group is formed by combining a plurality of lenses; the rear lens group is formed by combining a plurality of lenses.
4. The optical path structure component of a steering projection lens as claimed in claim 1, wherein the front side lens group has at least one convex lens and one concave lens; the rear lens group has at least one convex lens and one concave lens.
5. The optical path structure component of a steering projection lens as claimed in claim 1, wherein the front side lens group is composed of 5 lenses; the rear lens group is formed by combining 6 lenses; the front side lens group and the rear side lens group are symmetrically arranged.
6. The optical path structure component for a steering projection lens as claimed in claim 1, wherein the front lens group and the rear lens group are assembled and positioned in a cylindrical member.
7. The optical path structure assembly of a steering projection lens as claimed in claim 6, wherein the standard lens is disposed at an end of the cylindrical member.
8. The optical path structure component of the steering projection lens as claimed in claim 1, wherein the lenses of the front lens group and the lenses of the rear lens group are made of resin material or glass material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110159384.1A CN114859634A (en) | 2021-02-04 | 2021-02-04 | Light path structure component of steering projection lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110159384.1A CN114859634A (en) | 2021-02-04 | 2021-02-04 | Light path structure component of steering projection lens |
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| Publication Number | Publication Date |
|---|---|
| CN114859634A true CN114859634A (en) | 2022-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110159384.1A Pending CN114859634A (en) | 2021-02-04 | 2021-02-04 | Light path structure component of steering projection lens |
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| CN (1) | CN114859634A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006003655A (en) * | 2004-06-17 | 2006-01-05 | Matsushita Electric Ind Co Ltd | Projection lens and projector using same |
| CN101315459A (en) * | 2007-05-30 | 2008-12-03 | Hoya株式会社 | Zoom lens system |
| US20100172022A1 (en) * | 2009-01-05 | 2010-07-08 | Qisda Corporation | Projecting lens and projecting apparatus using the same |
| CN101887163A (en) * | 2010-06-29 | 2010-11-17 | 利达光电股份有限公司 | Front focusing and focus-fixing projection lens |
| CN104570296A (en) * | 2014-12-17 | 2015-04-29 | 深圳市亿思达科技集团有限公司 | Ultra-short focus projection lens |
| CN111474675A (en) * | 2020-05-06 | 2020-07-31 | 深圳市晟峰光电科技有限公司 | 3D prints and uses projection lens |
| CN112068285A (en) * | 2020-09-22 | 2020-12-11 | 王翠莲 | Wide-angle long-focus imaging optical system |
| US20200409126A1 (en) * | 2019-06-28 | 2020-12-31 | Seiko Epson Corporation | Projection optical system and projector |
| CN115047591A (en) * | 2022-05-30 | 2022-09-13 | 歌尔光学科技有限公司 | Projection lens and projection device |
-
2021
- 2021-02-04 CN CN202110159384.1A patent/CN114859634A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006003655A (en) * | 2004-06-17 | 2006-01-05 | Matsushita Electric Ind Co Ltd | Projection lens and projector using same |
| CN101315459A (en) * | 2007-05-30 | 2008-12-03 | Hoya株式会社 | Zoom lens system |
| US20100172022A1 (en) * | 2009-01-05 | 2010-07-08 | Qisda Corporation | Projecting lens and projecting apparatus using the same |
| CN101887163A (en) * | 2010-06-29 | 2010-11-17 | 利达光电股份有限公司 | Front focusing and focus-fixing projection lens |
| CN104570296A (en) * | 2014-12-17 | 2015-04-29 | 深圳市亿思达科技集团有限公司 | Ultra-short focus projection lens |
| US20200409126A1 (en) * | 2019-06-28 | 2020-12-31 | Seiko Epson Corporation | Projection optical system and projector |
| CN111474675A (en) * | 2020-05-06 | 2020-07-31 | 深圳市晟峰光电科技有限公司 | 3D prints and uses projection lens |
| CN112068285A (en) * | 2020-09-22 | 2020-12-11 | 王翠莲 | Wide-angle long-focus imaging optical system |
| CN115047591A (en) * | 2022-05-30 | 2022-09-13 | 歌尔光学科技有限公司 | Projection lens and projection device |
Non-Patent Citations (1)
| Title |
|---|
| 居荣兵;康廉洁;韩敏;刘言;: "微投影广角镜头设计", 应用光学, no. 04 * |
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