CN117666096A - 5.8 inch high-definition short-focus lens - Google Patents
5.8 inch high-definition short-focus lens Download PDFInfo
- Publication number
- CN117666096A CN117666096A CN202410133294.9A CN202410133294A CN117666096A CN 117666096 A CN117666096 A CN 117666096A CN 202410133294 A CN202410133294 A CN 202410133294A CN 117666096 A CN117666096 A CN 117666096A
- Authority
- CN
- China
- Prior art keywords
- lens
- object side
- image side
- inch high
- aspheric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 18
- 239000011521 glass Substances 0.000 claims description 12
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 8
- 238000003384 imaging method Methods 0.000 abstract description 26
- 238000012634 optical imaging Methods 0.000 abstract description 4
- 230000004075 alteration Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 239000006185 dispersion Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 206010073261 Ovarian theca cell tumour Diseases 0.000 description 2
- 201000009310 astigmatism Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000005304 optical glass Substances 0.000 description 2
- 208000001644 thecoma Diseases 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Abstract
The application provides a 5.8-inch high-definition short-focus lens, and relates to the field of optical imaging; the lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from front to back along an optical axis; the object side surface of the first lens is a convex spherical surface, and the image side surface of the first lens is a concave spherical surface; the object side surface of the second lens is a convex aspheric surface, and the image side surface of the second lens is a concave aspheric surface; the object side surface of the third lens is a convex aspheric surface, and the image side surface of the third lens is a concave aspheric surface; the object side surface of the fourth lens is a concave aspheric surface, and the image side surface of the fourth lens is an aspheric surface; the object side surface of the fifth lens is a spherical surface, and the image side surface of the fifth lens is a convex spherical surface; the object side surface of the sixth lens is a concave spherical surface, and the image side surface of the sixth lens is a convex spherical surface. The lens has good imaging quality and low cost, the 5.8-inch lens can realize focal length 139mm, the contrast ratio of the MTF under multiple fields of view is more than 0.2, and short-focus high-definition imaging is realized.
Description
Technical Field
The invention relates to the field of optical imaging, in particular to a 5.8-inch high-definition short-focus lens.
Background
With the continuous development of projection technology, the demands of people for high-definition and short-distance imaging are increasing, and the ultra-short-distance imaging technology enables users to obtain large-size high-quality images at extremely close projection distances, so that attractive and convenient solutions are provided for the fields of industry, business, education, vehicle-mounted and the like.
At present, the projection imaging of the 5.8-inch lens has some defects that short-focus high-definition imaging cannot be achieved at the same time, generally, the focal length of the existing 5.8-inch lens is 180mm, 190mm and 240mm, and the requirements of short-focus are met but the definition cannot achieve high definition at the same time.
Disclosure of Invention
The present invention has been made in view of the above problems, and it is an object of the present invention to provide a 5.8-inch high-definition short-focus lens that overcomes or at least partially solves the above problems.
In order to solve the problems, the invention discloses a 5.8-inch high-definition short-focus lens, which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from front to back along an optical axis;
the object side surface of the first lens is a convex spherical surface, and the image side surface of the first lens is a concave spherical surface;
the object side surface of the second lens is a convex aspheric surface, and the image side surface of the second lens is a concave aspheric surface;
the object side surface of the third lens is a convex aspheric surface, and the image side surface of the third lens is a concave aspheric surface;
the object side surface of the fourth lens is a concave aspheric surface, and the image side surface of the fourth lens is an aspheric surface;
the object side surface of the fifth lens is a spherical surface, and the image side surface of the fifth lens is a convex spherical surface;
the object side surface of the sixth lens is a concave spherical surface, and the image side surface of the sixth lens is a convex spherical surface.
Preferably, a diaphragm is arranged between the third lens and the fourth lens.
Preferably, the aspherical surfaces of the second lens, the third lens and the fourth lens satisfy an aspherical equation:
；
where z is the surface sagittal height, y is the radial radius, R is the curvature, k is the conic coefficient, and A, B, C, D, E, F, G, H, J is the aspheric coefficient.
Preferably, the spherical surface is made of glass material, and the aspheric surface is made of acrylic material.
Preferably, the second lens, the third lens and the fourth lens are made of acrylic material with the model of 'P-CARBO';
the first lens and the sixth lens are made of glass materials with the model of HZK 11-CDGM;
the fifth lens is made of glass materials with the model of HLAK 7A-CDGM.
Preferably, the distance between the first lens and the second lens is 1.23mm, the distance between the second lens and the third lens is 8.18mm, the distance between the third lens and the fourth lens is 12.16mm, the distance between the fourth lens and the fifth lens is 2mm, and the distance between the fifth lens and the sixth lens is 11.32mm.
Preferably, the focal length of the first lens is 95.13mm, the focal length of the second lens is-84.87 mm, the focal length of the third lens is 708.85mm, the focal length of the fourth lens is-120.31 mm, the focal length of the fifth lens is 81.08mm, and the focal length of the sixth lens is 335.69mm.
Preferably, the effective aperture of the first lens is D 01 =φ90.98，D 02 =Φ86.74, where D 01 And D 02 An object side surface and an image side surface of the first lens respectively;
the effective aperture of the second lens is D 01 =φ76.73，D 02 Phi 56.85, where D 01 And D 02 An object side surface and an image side surface of the second lens respectively;
the effective aperture of the third lens is D 01 =φ46.62，D 02 Phi 40.15, where D 01 And D 02 An object side surface and an image side surface of the third lens respectively;
the effective aperture of the fourth lens is D 01 =φ39.06，D 02 Phi 46.47, where D 01 And D 02 An object side surface and an image side surface of the fourth lens respectively;
the effective aperture of the fifth lens is D 01 =φ53.79，D 02 Phi 56.14, where D 01 And D 02 An object side surface and an image side surface of the fifth lens respectively;
the effective aperture of the sixth lens is D 01 =φ60.97，D 02 Phi 64.26, where D 01 And D 02 The object side and the image side of the sixth lens element, respectively.
Preferably, the display chip of the lens is a digital micromirror device.
Preferably, the resolution of the display chip is 1920×1080 or 1920×1200.
The application specifically comprises the following advantages:
in the embodiment of the present application, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens are disposed in this order from front to back along the optical axis; the object side surface of the first lens is a convex spherical surface, and the image side surface of the first lens is a concave spherical surface; the object side surface of the second lens is a convex aspheric surface, and the image side surface of the second lens is a concave aspheric surface; the object side surface of the third lens is a convex aspheric surface, and the image side surface of the third lens is a concave aspheric surface; the object side surface of the fourth lens is a concave aspheric surface, and the image side surface of the fourth lens is an aspheric surface; the object side surface of the fifth lens is a spherical surface, and the image side surface of the fifth lens is a convex spherical surface; the object side surface of the sixth lens is a concave spherical surface, and the image side surface of the sixth lens is a convex spherical surface. By arranging six lenses, three lenses adopt spherical design, and three lenses adopt aspheric design, so that the clear aperture and definition of the lens can be greatly improved while temperature drift is reduced, aberration is improved, field curvature and distortion are corrected, and imaging quality is improved; the aspheric lens is made of acrylic materials, two of the spherical lenses are made of HZK11 optical glass, so that the manufacturing cost can be greatly reduced, and the other spherical lens is made of HLAK7A glass with good optical performance, so that chromatic aberration, chromatic dispersion and spherical aberration of the whole lens are improved; the resolution and contrast of the lens are optimized by adjusting the radius of curvature, the material of each lens and the spacing between each lens, thereby increasing the concentration of the transfer function and reducing the dispersion. The lens has good imaging quality and low cost, the 5.8-inch lens can realize focal length 139mm, the contrast ratio of the MTF under multiple fields of view is larger than 0.2, short-focus high-definition imaging is realized, and high definition is realized while short focus is met.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings that are needed in the description of the present application will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a 5.8 inch high definition short focal lens and its optical path;
FIG. 2 is a schematic diagram of the transfer function of a 5.8 inch high definition short focal lens of the present invention;
FIG. 3 is a schematic view of the relative illuminance of a 5.8 inch high definition short focal lens of the present invention;
FIG. 4 is a field curvature and distortion plot of a 5.8 inch high definition short focus lens of the present invention;
FIG. 5 is a point column diagram of a 5.8 inch high definition short focus lens of the present invention;
fig. 6 is a schematic structural diagram of a 5.8-inch high-definition short-focus lens of the invention.
Reference numerals illustrate:
11. a first lens; 12. a second lens; 13. a third lens; 14. a fourth lens; 15. a fifth lens; 16. and a sixth lens.
Detailed Description
In order to make the objects, features and advantages of the present application more comprehensible, the present application is described in further detail below with reference to the accompanying drawings and detailed description. It will be apparent that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
Referring to fig. 1-6, a schematic structural diagram of a 5.8 inch high definition short focal lens according to the present invention is shown, which may specifically include the following structures: comprising a first lens 11, a second lens 12, a third lens 13, a fourth lens 14, a fifth lens 15 and a sixth lens 16 which are sequentially arranged from front to back along an optical axis;
the object side surface of the first lens 11 is a convex spherical surface, and the image side surface of the first lens 11 is a concave spherical surface;
the object side surface of the second lens element 12 is a convex aspheric surface, and the image side surface of the second lens element 12 is a concave aspheric surface;
the object side surface of the third lens element 13 is a convex aspheric surface, and the image side surface of the third lens element 13 is a concave aspheric surface;
the object side surface of the fourth lens element 14 is a concave aspheric surface, and the image side surface of the fourth lens element 14 is an aspheric surface;
the object side surface of the fifth lens element 15 is a spherical surface, and the image side surface of the fifth lens element 15 is a convex spherical surface;
the object side surface of the sixth lens element 16 is a concave spherical surface, and the image side surface of the sixth lens element 16 is a convex spherical surface.
In the embodiment of the present application, the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, and the sixth lens 16 are disposed in this order from front to back along the optical axis; the object side surface of the first lens 11 is a convex spherical surface, and the image side surface of the first lens 11 is a concave spherical surface; the object side surface of the second lens element 12 is a convex aspheric surface, and the image side surface of the second lens element 12 is a concave aspheric surface; the object side surface of the third lens element 13 is a convex aspheric surface, and the image side surface of the third lens element 13 is a concave aspheric surface; the object side surface of the fourth lens element 14 is a concave aspheric surface, and the image side surface of the fourth lens element 14 is an aspheric surface; the object side surface of the fifth lens element 15 is a spherical surface, and the image side surface of the fifth lens element 15 is a convex spherical surface; the object side surface of the sixth lens element 16 is a concave spherical surface, and the image side surface of the sixth lens element 16 is a convex spherical surface. By arranging six lenses, three lenses adopt spherical design, and three lenses adopt aspheric design, so that the clear aperture and definition of the lens can be greatly improved while temperature drift is reduced, aberration is improved, field curvature and distortion are corrected, and imaging quality is improved; the aspheric lens is made of acrylic materials, two of the spherical lenses are made of HZK11 optical glass, so that the manufacturing cost can be greatly reduced, and the other spherical lens is made of HLAK7A glass with good optical performance, so that chromatic aberration, chromatic dispersion and spherical aberration of the whole lens are improved; the resolution and contrast of the lens are optimized by adjusting the radius of curvature, the material of each lens and the spacing between each lens, thereby increasing the concentration of the transfer function and reducing the dispersion. The lens has good imaging quality and low cost, the 5.8-inch lens can realize focal length 139mm, the contrast ratio of the MTF under multiple fields of view is larger than 0.2, short-focus high-definition imaging is realized, and high definition is realized while short focus is met.
Next, a 5.8-inch high-definition short-focus lens in the present exemplary embodiment will be further described.
In the embodiment of the application, the 5.8-inch high-definition short-focus lens comprises six lenses and a diaphragm arranged in the middle, wherein the sequence of the six lenses is respectively a first lens 11, a second lens 12, a third lens 13, a diaphragm, a fourth lens 14, a fifth lens 15 and a sixth lens 16 which are sequentially arranged from front to back along an optical axis; the object side surface of the first lens 11 is a convex spherical surface, and the image side surface of the first lens 11 is a concave spherical surface; the object side surface of the second lens element 12 is a convex aspheric surface, and the image side surface of the second lens element 12 is a concave aspheric surface; the object side surface of the third lens element 13 is a convex aspheric surface, and the image side surface of the third lens element 13 is a concave aspheric surface; the object side surface of the fourth lens element 14 is a concave aspheric surface, and the image side surface of the fourth lens element 14 is an aspheric surface; the object side surface of the fifth lens element 15 is a spherical surface, and the image side surface of the fifth lens element 15 is a convex spherical surface; the object side surface of the sixth lens element 16 is a concave spherical surface, and the image side surface of the sixth lens element 16 is a convex spherical surface. Each lens images the light on a screen through receiving and refracting the light, and a diaphragm is arranged between the third lens 13 and the fourth lens 14 and is used for controlling the depth of field, the range of an imaging object space and the brightness of an image, three of the six lenses adopt a double-sided aspheric surface design, the definition and the clear aperture of the lens are greatly improved, and the edge image quality is improved.
As an example, the first lens 11 has positive power, and a focal length of 95.13mm; the second lens 12 has negative focal power and a focal length of-84.87 mm; the third lens 13 has positive focal power and a focal length of 708.85mm; the fourth lens 14 has negative focal power, and the focal length is 120.31mm below zero; the fifth lens 15 has positive focal power and a focal length of 81.08mm; the sixth lens 16 has positive power and a focal length of 335.69mm. Through the crossed arrangement of positive and negative focal power, positive and negative light condensation are mutually counteracted, and temperature drift is reduced.
As an example, the effective aperture of the first lens 11 is D 01 =φ90.98，D 02 =Φ86.74, where D 01 And D 02 The object-side and image-side surfaces of the first lens element 11; the effective aperture of the second lens 12 is D 01 =φ76.73，D 02 Phi 56.85, where D 01 And D 02 The object-side and image-side surfaces of the second lens element 12; the effective aperture of the third lens 13 is D 01 =φ46.62，D 02 Phi 40.15, where D 01 And D 02 The object-side and image-side surfaces of the third lens element 13; the effective aperture of the fourth lens 14 is D 01 =φ39.06，D 02 Phi 46.47, where D 01 And D 02 An object-side surface and an image-side surface of the fourth lens element 14; the effective aperture of the fifth lens 15 is D 01 =φ53.79，D 02 Phi 56.14, where D 01 And D 02 An object side surface and an image side surface of the fifth lens element 15; the sixth lens 16 has an effective aperture D 01 =φ60.97，D 02 Phi 64.26, where D 01 And D 02 The object-side and image-side surfaces of the sixth lens 16, respectively. The large clear aperture of the lens is formed through the large caliber of each lens, so that the imaging brightness is improved, the stray light interference is reduced, and the imaging definition is improved.
As an example, the pitch between the first lens 11 and the second lens 12 is 1.23mm, the pitch between the second lens 12 and the third lens 13 is 8.18mm, the pitch between the third lens 13 and the fourth lens 14 is 12.16mm, the pitch between the fourth lens 14 and the fifth lens 15 is 2mm, and the pitch between the fifth lens 15 and the sixth lens 16 is 11.32mm. By adjusting and optimizing the distance between the lenses, the short-focus imaging can be satisfied while the miniaturization is realized.
In this embodiment, the optical parameters of each lens of the projection lens are shown in the following table:
table one:
the spherical surface is made of glass, the aspheric surface is made of acrylic, and specifically, the second lens 12, the third lens 13 and the fourth lens 14 are made of acrylic with the model of 'P-CARBO', so that the cost is low; the first lens 11 and the sixth lens 16 are made of glass materials with the model of HZK11-CDGM and large caliber and weight, and the HZK11 is 20 yuan/kg of glass materials, so that the product cost can be greatly reduced; the fifth lens 15 is made of a glass material of HLAK7A-CDGM with higher optical performance, so that chromatic aberration, chromatic dispersion and spherical aberration of the whole lens are improved, imaging quality of the lens is improved, and the total product cost of the lens is expected to be controlled within 80 yuan.
The spherical aberration, the coma aberration, the astigmatism and the chromatic aberration of the imaging system are balanced by adjusting the parameters such as the materials, the curvature radius and the distance between the six lenses, so that the concentration of a transfer function is improved, and the dispersivity is reduced.
As an example, the aspherical surfaces of the second lens 12, the third lens 13, and the fourth lens 14 satisfy the aspherical equation:
；
where z is the surface sagittal height, y is the radial radius, R is the curvature, k is the conic coefficient, and A, B, C, D, E, F, G, H, J is the aspheric coefficient.
The higher order coefficients of each aspherical lens are shown in table two below:
and (II) table:
the surface number in table two corresponds to the surface number in table one.
The transfer function curve of this embodiment is shown in fig. 2.
MTF diagram representing comprehensive analysis capability of optical system, in which horizontal axis represents spatial frequency, unit: turns per millimeter (cycles/mm). The vertical axis represents the value of the Modulation Transfer Function (MTF), the value of the MTF is used for evaluating the imaging quality of the lens, the range of the value is 0-1, the higher the MTF curve is, the straighter the imaging quality of the lens is, the stronger the reduction capability on a real image is, the better the curve superposition degree of each view field is, and the better the consistency of the image quality is. The graph shows that when the spatial frequency of the visible light wave band is 12, the MTF values of eight fields are all more than 0.2, the concentration degree is better, and the resolution of the lens is higher, and the edge and the middle are clear at the same time.
The relative illuminance curve of this embodiment is shown in fig. 3. As can be seen from the figure, the luminance is 100 at the center point, gradually decreases as it extends from the center to the edge, and finally the edge decays to 52, which is still much greater than the prior art relative illuminance value of 40. Therefore, the brightness of the lens is better, and the brightness requirement can be met at the center and the edge.
The field curvature diagram of this embodiment is shown in fig. 4 (a), in which the S curve represents the sagittal field curvature, the T curve represents the meridional field curvature, and after three light rays with the wavelengths of 656.27nm, 587.56nm and 486.13nm are optically imaged, the focal offset of the sagittal field curvature and the meridional field curvature is in the range of-0.8 mm to 0.8mm, as can be seen from the field curvature diagram, the field curvature of the optical imaging is smaller, the field curvature and astigmatism of each field (especially the fringe field) are well corrected, and the field center and the fringe have clear imaging.
The distortion chart of the present embodiment is shown in fig. 4 (b). As can be seen from the distortion chart, three light rays with the wavelengths of 656.27nm, 587.56nm and 486.13nm are subjected to optical imaging, the distortion rate is in the range of-0.01%, the image deformation caused by the main light beam is small, and the imaging quality is excellent.
The point diagram of this embodiment is shown in fig. 5. The distance from the center of the imaging system to the edge is shown as the left side, the right side and the bottom right side of the point column diagram, and the RMS on the right side represents the radius of the square root, so that the size of a diffuse spot formed after light rays with different wavelengths are imaged on an image surface can be reflected; from the figure, the diffuse spots are concentrated from the center to the edge, the center and the edge are clear, the spherical aberration, the coma and the like are not obvious, and the imaging quality is excellent.
In one embodiment, specific optical parameters of the imaging lens are shown in the following table three:
table three:
the embodiment adopts a six-piece lens structure, realizes that the focal length EFL is about 139mm, is smaller than focal lengths 180mm, 190mm, 240mm and the like of the existing 5.8-inch lens, can reach 27.1021 degrees in angle of view ANG, can reach 2.6 in actual use F Number (FNO), realizes 5.8-inch projection lens miniaturized short-focus high-definition imaging, and has low cost and strong practicability.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or terminal device comprising the element.
The above describes a 5.8 inch high definition short focal lens provided by the present invention in detail, and specific examples are applied herein to illustrate the principles and embodiments of the present invention, and the above examples are only used to help understand the method and core ideas of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (10)
1. The 5.8-inch high-definition short-focus lens is characterized by comprising a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from front to back along an optical axis;
the object side surface of the first lens is a convex spherical surface, and the image side surface of the first lens is a concave spherical surface;
the object side surface of the second lens is a convex aspheric surface, and the image side surface of the second lens is a concave aspheric surface;
the object side surface of the third lens is a convex aspheric surface, and the image side surface of the third lens is a concave aspheric surface;
the object side surface of the fourth lens is a concave aspheric surface, and the image side surface of the fourth lens is an aspheric surface;
the object side surface of the fifth lens is a spherical surface, and the image side surface of the fifth lens is a convex spherical surface;
the object side surface of the sixth lens is a concave spherical surface, and the image side surface of the sixth lens is a convex spherical surface.
2. The 5.8-inch high-definition short-focus lens of claim 1, wherein a diaphragm is arranged between the third lens and the fourth lens.
3. The 5.8-inch high definition short focus lens of claim 1, wherein the aspheres of the second lens, the third lens, and the fourth lens satisfy the aspherical equation:
；
where z is the surface sagittal height, y is the radial radius, R is the curvature, k is the conic coefficient, and A, B, C, D, E, F, G, H, J is the aspheric coefficient.
4. The 5.8-inch high-definition short-focus lens of claim 1, wherein the spherical surface is made of glass material, and the aspheric surface is made of acrylic material.
5. The 5.8-inch high-definition short-focus lens as claimed in claim 4, wherein the second lens, the third lens and the fourth lens are made of acrylic material with a model of 'P-CARBO';
the first lens and the sixth lens are made of glass materials with the model of HZK 11-CDGM;
the fifth lens is made of glass materials with the model of HLAK 7A-CDGM.
6. The 5.8-inch high definition short focal lens of claim 1, wherein a spacing between the first lens and the second lens is 1.23mm, a spacing between the second lens and the third lens is 8.18mm, a spacing between the third lens and the fourth lens is 12.16mm, a spacing between the fourth lens and the fifth lens is 2mm, and a spacing between the fifth lens and the sixth lens is 11.32mm.
7. The 5.8-inch high definition short focal lens of claim 1, wherein the focal length of the first lens is 95.13mm, the focal length of the second lens is-84.87 mm, the focal length of the third lens is 708.85mm, the focal length of the fourth lens is-120.31 mm, the focal length of the fifth lens is 81.08mm, and the focal length of the sixth lens is 335.69mm.
8. The 5.8-inch high definition short focal lens of claim 1, wherein the effective aperture of the first lens is D 01 =φ90.98，D 02 =Φ86.74, where D 01 And D02 an object side surface and an image side surface of the first lens respectively;
the effective aperture of the second lens is D 01 =φ76.73，D 02 Phi 56.85, where D 01 And D 02 An object side surface and an image side surface of the second lens respectively;
the effective aperture of the third lens is D 01 =φ46.62，D 02 Phi 40.15, where D 01 And D 02 An object side surface and an image side surface of the third lens respectively;
the effective aperture of the fourth lens is D 01 =φ39.06，D 02 Phi 46.47, where D 01 And D 02 An object side surface and an image side surface of the fourth lens respectively;
the effective aperture of the fifth lens is D 01 =φ53.79，D 02 Phi 56.14, where D 01 And D 02 An object side surface and an image side surface of the fifth lens respectively;
the effective aperture of the sixth lens is D 01 Φ 60.97, d02=Φ 64.26, wherein D 01 And D 02 The object side and the image side of the sixth lens element, respectively.
9. The 5.8-inch high-definition short-focus lens of claim 1, wherein a display chip of the lens is a digital micromirror device.
10. The 5.8-inch high definition short focus lens of claim 9, wherein the resolution of the display chip is 1920 x 1080 or 1920 x 1200.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410133294.9A CN117666096B (en) | 2024-01-31 | 5.8 Inch high-definition short-focus lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410133294.9A CN117666096B (en) | 2024-01-31 | 5.8 Inch high-definition short-focus lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117666096A true CN117666096A (en) | 2024-03-08 |
| CN117666096B CN117666096B (en) | 2024-04-23 |
Family
ID=
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110618517A (en) * | 2018-06-20 | 2019-12-27 | 大立光电股份有限公司 | Photographing optical lens, image capturing device and electronic device |
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110618517A (en) * | 2018-06-20 | 2019-12-27 | 大立光电股份有限公司 | Photographing optical lens, image capturing device and electronic device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110346895B (en) | Fixed focus lens | |
| CN107783258B (en) | Projection lens | |
| CN109884780A (en) | A kind of inexpensive, high-resolution ultrashort out-of-focus projection's optical system | |
| CN109298511A (en) | Optical imaging system | |
| CN103064175A (en) | Projection lens | |
| CN110244438A (en) | Optical imaging system | |
| CN110361849A (en) | Folding, which spreads out, mixes mobile lens | |
| CN115128771A (en) | Optical lens | |
| CN102621672A (en) | High-throw-ratio projection objective | |
| CN210465833U (en) | High-resolution ultraviolet objective lens | |
| CN111983788A (en) | Wide-angle lens | |
| CN209297013U (en) | Optical imaging system | |
| CN207611189U (en) | Optical imaging lens | |
| CN117666096B (en) | 5.8 Inch high-definition short-focus lens | |
| CN217034392U (en) | Fixed focus lens | |
| CN215181166U (en) | Optical imaging lens | |
| CN112698483B (en) | Optical imaging lens | |
| TW201027116A (en) | Single focus wide-angle lens module | |
| CN117666096A (en) | 5.8 inch high-definition short-focus lens | |
| CN114326049A (en) | Fisheye image capturing lens | |
| CN210155396U (en) | Optical imaging lens | |
| US11385441B2 (en) | Projection lens assembly | |
| CN117666095B (en) | Large-view-field short-focus ultra-short-distance ultra-high definition imaging system and lens | |
| CN216526500U (en) | Optical imaging lens group | |
| CN213903936U (en) | Optical imaging lens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |