CN110753870B - Eyepiece and head-mounted electronic device - Google Patents
Eyepiece and head-mounted electronic device Download PDFInfo
- Publication number
- CN110753870B CN110753870B CN201780092196.3A CN201780092196A CN110753870B CN 110753870 B CN110753870 B CN 110753870B CN 201780092196 A CN201780092196 A CN 201780092196A CN 110753870 B CN110753870 B CN 110753870B
- Authority
- CN
- China
- Prior art keywords
- eyepiece
- lens
- lens element
- focal length
- object side
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B25/00—Eyepieces; Magnifying glasses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
Abstract
An eyepiece (10) and a head-mounted electronic device (100), the eyepiece (10) including, in order from an image side to an object side, a first lens element (11) having positive refractive power, a second lens element (13) having negative refractive power, a third lens element (15) having positive refractive power, a fourth lens element (17) having positive refractive power, and a fifth lens element (19) having negative refractive power. The eyepiece (10) satisfies the following relation: 0.7< f1/fw < 2; 0.4< | f2/fw | < 1.2; 6< f3/fw < 9; 0.5< f4/fw < 3; 7< | f5/fw | < 9. Wherein f1 is the focal length of the first lens (11), f2 is the focal length of the second lens (13), f3 is the focal length of the third lens (15), f4 is the focal length of the fourth lens (17), f5 is the focal length of the fifth lens (19), and fw is the total focal length of the eyepiece (10).
Description
Technical Field
The present disclosure relates to optical imaging technologies, and particularly to an eyepiece and a head-mounted electronic device.
Background
At present, as the requirements of people on scene experience are higher and higher, the head-mounted electronic equipment is widely used. In the related art, due to the fact that the design of the eyepiece of the head-mounted electronic device is not reasonable, the head-mounted electronic device has the problems of large volume, small angle of view and the like, and the development of the head-mounted electronic device is limited.
Disclosure of Invention
The embodiment of the invention provides an eyepiece and a head-mounted electronic device.
The invention provides an eyepiece used for a head-wearing electronic device, which comprises a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a fourth lens with positive refractive power and a fifth lens with negative refractive power in sequence from an image side to an object side;
the eyepiece satisfies the following relation:
(1)0.7<f1/fw<2；
(2)0.4<|f2/fw|<1.2；
(3)6<f3/fw<9；
(4)0.5<f4/fw<3；
(5)7<|f5/fw|<9；
wherein f is1Is the focal length of the first lens, f2Is the focal length of the second lens, f3Is the focal length of the third lens, f4Is the focal length of the fourth lens, f5Is the focal length of the fifth lens, fwIs the total focal length of the eyepiece.
The eyepiece of the embodiment of the invention can effectively shorten the length of the eyepiece by combining the five lenses, thereby ensuring that the head-mounted electronic equipment is miniaturized and lightened and meeting the requirement of large field angle.
The head-mounted electronic device provided by the invention comprises the eyepiece and the display terminal of the above embodiment, wherein the display terminal is positioned at the object side of the fifth lens.
The head-mounted electronic equipment of the embodiment of the invention can effectively shorten the length of the eyepiece by combining the five lenses, thereby ensuring that the head-mounted electronic equipment is miniaturized and lightened and can meet the requirement of large field angle.
Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of an eyepiece according to a first embodiment of the present invention.
Fig. 2 is an MTF graph of an eyepiece according to a first embodiment of the invention.
Fig. 3 is a field curvature diagram of an eyepiece according to a first embodiment of the invention.
Fig. 4 is a distortion diagram of the eyepiece according to the first embodiment of the invention.
Fig. 5 is a schematic structural view of an eyepiece according to a second embodiment of the present invention.
Fig. 6 is an MTF graph of an eyepiece according to a second embodiment of the present invention.
Fig. 7 is a field curvature diagram of an eyepiece of a second embodiment of the invention.
Fig. 8 is a distortion diagram of the eyepiece of the second embodiment of the present invention.
Fig. 9 is a schematic structural view of an eyepiece according to a third embodiment of the present invention.
Fig. 10 is an MTF graph of an eyepiece according to a third embodiment of the present invention.
Fig. 11 is a field curvature diagram of an eyepiece lens according to a third embodiment of the present invention.
Fig. 12 is a distortion diagram of an eyepiece of the third embodiment of the present invention.
Description of the drawings with the main elements symbols:
the head-mounted electronic equipment comprises a head-mounted electronic equipment 100, an eyepiece 10, a first lens 11, a second lens 13, a third lens 15, a fourth lens 17, a fifth lens 19 and a display terminal 20.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, an eyepiece 10 according to an embodiment of the present invention is used in a head-mounted electronic device 100. The eyepiece lens 10 includes, in order from the image side to the object side, a first lens element 11 with positive refractive power, a second lens element 13 with negative refractive power, a third lens element 15 with positive refractive power, a fourth lens element 17 with positive refractive power, and a fifth lens element 19 with negative refractive power. The eyepiece 10 satisfies the following relation:
(1)0.7<f1/fw<2；
(2)0.4<|f2/fw|<1.2；
(3)6<f3/fw<9；
(4)0.5<f4/fw<3；
(5)7<|f5/fw|<9；
wherein f is1Is the focal length of the first lens 11, f2Is the focal length of the second lens 13, f3Is the focal length of the third lens 15, f4Is the focal length of the fourth lens 17, f5Is the focal length of the fifth lens 19, fwThe total focal length of the eyepiece 10.
The eyepiece 10 of the embodiment of the present invention can effectively shorten the length of the eyepiece 10 by combining five lenses, so that the head-mounted electronic device 100 can be miniaturized and lightened and can meet the requirement of a large field angle.
Note that the conditional expression (1) indicates the focal length f through the first lens 111The eyepiece 10 is configured. If the focal length f of the first lens 111Too small (f)1/fw<0.7), it is difficult to correct the aberration of the eyepiece 10, resulting in unclear imaging of the eyepiece 10, and also resulting in excessive bending of the first lens 11, increasing the thickness of the first lens 11, which is detrimental to miniaturization of the eyepiece 10. If the focal length f of the first lens 111Too large (f)1/fw>2) Other optical elements with small focal length are required to meet the focal length requirement of the eyepiece 10, which increases the number of lenses of the eyepiece 10 and is not favorable for miniaturization of the eyepiece 10.
The conditional expression (2) indicates the focal length f by the second lens 132The eyepiece 10 is configured. The conditional expression (3) indicates the focal length f by the third lens 153The eyepiece 10 is configured. The conditional expression (4) indicates the focal length f by the fourth lens 174The eyepiece 10 is configured. The conditional expression (5) indicates the focal length f by the fifth lens 195The eyepiece 10 is configured. In summary, the eyepiece 10 passes through the focal length f of the first lens 111Focal length f of the second lens 132Focal length f of the third lens 153The focal length f of the fourth lens element 174Focal length f of fifth lens 195The eyepiece 10 is configured such that the angle of view of the eyepiece 10 is large, the distortion rate is small, the diopter adjustment is large, and the length is short, thereby achieving miniaturization of the head-mounted electronic apparatus 100.
Specifically, the material of the eyepiece meets the following requirements:
nd1>1.49, Nd2>1.58, Nd3>1.53, Nd4>1.49, Nd5> 1.58; wherein Nd1, Nd2, Nd3, Nd4, and Nd5 respectively represent refractive indices of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens at a d-line.
Vd1>45, Vd2>21, Vd3>45, Vd4>45, Vd5> 21; wherein Vd1, Vd2, Vd3, Vd4, Vd5 respectively represent abbe numbers of the first lens, the second lens, the third lens, the fourth lens and the fifth lens at d-line.
It is understood that the d-line refers to a specific wavelength value.
It will be appreciated that fig. 1 may represent a ray path diagram of light through the eyepiece 10.
In some embodiments, the eyepiece 10 includes a stop 12, the stop 12 being located on the image side of the first lens 11.
In this manner, the diaphragm 12 can limit the size of the area of the imaged subject.
Specifically, the object side surface S0 of the diaphragm 12 is opposed to the first lens 11. The aperture 12 may include a field stop, which is an aperture for limiting the field of view of the scene being imaged, and an aperture stop, which is an aperture for limiting the size of the incident beam, which may reduce stray light and improve the quality of the image.
In some embodiments, the image-side surface S1 of the first lens element 11 is convex, and the object-side surface S2 of the first lens element 11 is convex. The image-side surface S1 of the first lens 11 and the object-side surface S2 of the first lens 11 are both aspheric.
In this way, the first lens 11 is advantageous in correcting the aberration of the eyepiece 10, contributing to shortening the length of the eyepiece 10.
It is understood that the first lens element 11 with positive refractive power is advantageous for correcting aberrations. The image-side surface S1 of the first lens 11 and the object-side surface S2 of the first lens 11 are both convex, which facilitates the ratio of the focal length of the first lens 11 to the total focal length of the eyepiece 12 to be greater than 0.7 and less than 2, thereby facilitating miniaturization of the eyepiece 10. Meanwhile, since the image side surface S1 of the first lens 11 and the object side surface S2 of the first lens 1 are both aspheric, the imaging quality of the eyepiece 11 can be improved, and distortion can be reduced.
Specifically, the aspherical surface profile is determined by the following conditional expression:
wherein X is the longitudinal distance between any point on the aspheric surface and the surface vertex, r is the height from any point on the aspheric surface to the optical axis, c is the vertex curvature, k is the cone constant, and Ai is the correction coefficient of the ith-th order of the aspheric surface.
In some embodiments, the image-side surface S3 of the second lens element 13 is concave and the object-side surface S4 of the second lens element is convex. The image side surface S3 of the second lens 13 and the object side surface S4 of the second lens are both aspheric.
In this manner, the second lens 13 is advantageous in correcting the aberration of the eyepiece 10, contributing to shortening the length of the eyepiece 10.
It is understood that the second lens element 13 with negative refractive power is advantageous for correcting the aberration of the eyepiece 10. The image-side surface S3 of the second lens 13 being concave and the object-side surface S4 of the second lens being convex facilitate the absolute value of the ratio of the focal length of the second lens 13 to the total focal length of the eyepiece 12 being greater than 0.4 and less than 1.2, thereby facilitating miniaturization of the eyepiece 10. The image-side surface S3 of the second lens element 13 and the object-side surface S4 of the second lens element 13 are aspheric, so that the imaging quality of the eyepiece lens 11 can be improved and distortion can be reduced.
In some embodiments, the image-side surface S5 of the third lens element 15 is concave and the object-side surface S6 of the third lens element 15 is convex. The image-side surface S5 of the third lens 15 and the object-side surface S6 of the third lens are both aspheric.
In this manner, the third lens 15 is advantageous in correcting the aberration of the eyepiece 10, and contributes to shortening the length of the eyepiece 10.
It is understood that the third lens element 15 with positive refractive power is advantageous for correcting the aberration of the eyepiece 10. The image-side surface S5 of the third lens element 15 being concave and the object-side surface S6 of the second lens element being convex facilitate the ratio of the focal length of the third lens element 15 to the total focal length of the eyepiece 12 being greater than 6 and less than 9, thereby facilitating miniaturization of the eyepiece 10. The image-side surface S5 of the third lens element 15 and the object-side surface S6 of the third lens element 15 are aspheric, so that the imaging quality of the eyepiece lens 11 can be improved and distortion can be reduced.
In some embodiments, the image-side surface S7 of the fourth lens element 17 is convex and the object-side surface S8 of the fourth lens element 17 is concave. The image side surface S7 of the fourth lens 17 and the object side surface S8 of the fourth lens 17 are both aspheric.
In this manner, the fourth lens 17 is advantageous in correcting the aberration of the eyepiece 10, and contributes to shortening the length of the eyepiece 10.
It is understood that the fourth lens element 17 with positive refractive power is advantageous for correcting the aberration of the eyepiece 10. The image-side surface S7 of the fourth lens element 17 being convex and the object-side surface S8 of the fourth lens element 17 being concave facilitate the ratio of the focal length of the fourth lens element 17 to the total focal length of the eyepiece 12 being greater than 0.5 and less than 3, thereby facilitating miniaturization of the eyepiece 10. The image-side surface S7 of the fourth lens element 17 and the object-side surface S8 of the fourth lens element 17 are aspheric, so that the imaging quality of the eyepiece lens 11 can be improved and distortion can be reduced.
In some embodiments, the image-side surface S9 of the fifth lens element 19 is convex and the object-side surface S10 of the fifth lens element 19 is concave. The image side surface S9 of the fifth lens 19 and the object side surface S10 of the fifth lens 19 are both aspheric.
In this manner, the fifth lens 19 is advantageous in correcting the aberration of the eyepiece 10, and contributes to shortening the length of the eyepiece 10.
It is understood that the fifth lens element 19 with negative refractive power is advantageous for correcting the aberration of the eyepiece 10. The image-side surface S9 of the fifth lens 19 being concave and the object-side surface S10 of the fifth lens being convex facilitate the absolute value of the ratio of the focal length of the fifth lens 19 to the total focal length of the eyepiece 12 being larger than 7 and smaller than 9, thereby facilitating miniaturization of the eyepiece 10. The image-side surface S9 of the fifth lens element 19 and the object-side surface S10 of the fifth lens element 19 are aspheric, so that the imaging quality of the eyepiece lens 11 can be improved and distortion can be reduced.
In some embodiments, the field angle of eyepiece 10 is greater than 54 degrees. This allows the eyepiece 10 to meet the market demand for a large field of view.
Specifically, the larger the field angle, the larger the field of view. The eyepiece 10 of the present embodiment has a large angle of view while ensuring imaging quality, and the eyepiece 10 of the present embodiment can be designed to be small while ensuring a large angle of view.
In some embodiments, the diopter of eyepiece 10 is greater than 1000 degrees. This allows the eyepiece 10 to meet the use requirements of a user with 1000 degrees myopia.
Specifically, the diopter calculation formula is as follows: d1000/(f)w)2The diopter adjustment of the invention can be obtained to be more than 1000 degrees. Wherein: d denotes diopter and D denotesThe shortest distance from the fifth lens 19 to the display terminal 20 in the optical axis direction, fw is the total focal length of the eyepiece.
It can be understood from fig. 1 that the eyepiece 10 of the present embodiment has the feature of image-space telecentricity, and the present embodiment does not have a change in the angle of view during diopter adjustment. It will be appreciated that the image-side telecentric optical path is such that the aperture stop is placed in the object focal plane of the eyepiece 10, with the center of convergence of the object chief ray parallel to the optical axis chief ray at image infinity. The image space telecentric optical path has the following functions: measurement errors introduced by inaccurate image focusing can be eliminated.
Referring to fig. 4, in some embodiments, the percent distortion value of eyepiece 10 is less than 2.3. Thus, the low distortion rate allows for sharp imaging of the eyepiece 10.
In some embodiments, eyepiece 10 is less than 30mm in length. Thus, the eyepiece 10 can be downsized.
In some embodiments, eyepiece 10 has an entrance pupil distance of 15mm and an entrance pupil diameter of 6 mm.
So, eyepiece 10 is under miniaturized, the clear condition of formation of image, and eyepiece 10 can obtain great eye movement scope, and the user can conveniently watch the image that eyepiece 10 formed, is favorable to improving user experience.
The head mounted electronic apparatus 100 of the embodiment of the present invention includes an eyepiece 10 and a display terminal 20. The display terminal 20 is located on the object side of the fifth lens 19.
Specifically, in the present embodiment, the display terminal 20 includes a display screen and a cover glass located on the display screen. In the embodiment of the invention, the cover glass is positioned at the object side of the fifth lens, the image side surface S11 of the cover glass is opposite to the fifth lens 19, and the object side surface S12 of the cover glass is opposite to the display screen. The display screen is, for example, a liquid crystal display screen, an OLED display screen, or the like, the display terminal 20 may display a picture, and light emitted by the display terminal 20 passes through the eyepiece and reaches the image side for imaging. The human eye can observe the display terminal 20 on the image side of the diaphragm 12.
In some embodiments, the size of the display screen is 0.7 inches, and the resolution is 1920 × 1080, which can meet the use requirement of the resolution being within 400 ten thousand pixels.
In this way, the size of the head-mounted electronic apparatus 100 can be reduced, and a user can observe an image with high definition.
Specifically, in order to form a larger image through the eyepiece 10, the head-mounted electronic device 100 generally uses a larger display screen, for example, a display screen over 3 inches, which may cause the size of the head-mounted electronic device 100 to be too large, so that the head-mounted electronic device 100 is not portable. The head-mounted electronic device 100 of the present embodiment employs a display screen with a size of 0.7 inches, so that the size of the head-mounted electronic device 100 is greatly reduced, and at the same time, since the resolution of the display screen is 1920 × 1080, a displayed image can still form a large and clear image after being enlarged by the eyepiece 10.
Fig. 2 is a schematic imaging MTF diagram of the head-mounted electronic device 100 according to the first embodiment of the invention. The horizontal axis in the imaging MTF diagram represents spatial resolution in lp/mm (log lines per mm) and the vertical axis represents MTF values, i.e., the percentage of imaging quality that achieves real world conditions, from 0 to 1. The MTF values for different spatial resolution at 0, 20 and 44 degrees are shown. Wherein T is a meridian plane, S is a sagittal plane, and MTF corresponding to T and S is consistent under a 0-degree field angle. As can be seen from the figure, the MTF of the present embodiment is 0.4 or more at 80Ip/mm, and thus it can be seen that the present embodiment has a high resolution.
Fig. 3 is a field curvature diagram of the head-mounted electronic device 100 according to a first embodiment of the invention. Fig. 4 is a schematic diagram of a distortion curve of the head-mounted electronic device 100 according to the first embodiment of the invention. In the field curvature curve graph, T is a meridian field curvature, namely a field curvature curve corresponding to a meridian plane, S is a sagittal field curvature, namely a field curvature curve corresponding to a sagittal plane, the difference between the meridian field curvature and the sagittal field curvature is astigmatism, the field curvature and the astigmatism influence the aberration of the off-axis field light, and the imaging quality of the off-axis light of the system is seriously influenced if the difference is too large. The amount of distortion in the distortion graph does not affect the sharpness of the image, but only causes image distortion.
The first embodiment is as follows:
referring to fig. 1-4, in one embodiment, the ocular lens satisfies the conditions of table 1 below:
TABLE 1
Example two:
referring to fig. 5-8, in the second embodiment, the ocular lens satisfies the conditions of table 2 below:
TABLE 2
Example three:
referring to fig. 9-12, in the third embodiment, the ocular lens satisfies the following conditions of table 3:
TABLE 3
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.
In the description of the present specification, reference to the description of the terms "one embodiment", "some embodiments", "an illustrative embodiment", "an example", "a specific example", or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (15)
1. An eyepiece for a head mounted electronic device, the eyepiece comprising, in order from an image side to an object side:
a first lens element with positive refractive power;
a second lens element with negative refractive power;
a third lens element with positive refractive power;
a fourth lens element with positive refractive power; and
a fifth lens element with negative refractive power;
the eyepiece satisfies the following relation:
(1)0.7<f1/fw<2；
(2)0.4<|f2/fw|<1.2；
(3)6<f3/fw<9；
(4)0.5<f4/fw<3；
(5)7<|f5/fw|<9；
wherein f is1Is the focal length of the first lens, f2Is the focal length of the second lens, f3Is the focal length of the third lens, f4Is the focal length of the fourth lens, f5Is the focal length of the fifth lens, fwIs the total focal length of the eyepiece.
2. The eyepiece of claim 1, wherein the eyepiece comprises a stop positioned on an image side of the first lens.
3. The eyepiece of claim 1, wherein the image side surface of the first lens element is convex, the object side surface of the first lens element is convex, and both the image side surface of the first lens element and the object side surface of the first lens element are aspheric.
4. The eyepiece of claim 1, wherein the image side surface of the second lens element is concave, the object side surface of the second lens element is convex, and both the image side surface of the second lens element and the object side surface of the second lens element are aspheric.
5. The eyepiece of claim 1, wherein the image side surface of the third lens element is concave, the object side surface of the third lens element is convex, and both the image side surface of the third lens element and the object side surface of the third lens element are aspheric.
6. The eyepiece of claim 1, wherein an image side surface of the fourth lens element is convex, an object side surface of the fourth lens element is concave, and wherein both the image side surface of the fourth lens element and the object side surface of the fourth lens element are aspheric.
7. The eyepiece of claim 1, wherein an image side surface of the fifth lens element is convex, an object side surface of the fifth lens element is concave, and wherein both the image side surface of the fifth lens element and the object side surface of the fifth lens element are aspheric.
8. The eyepiece of claim 1, wherein the field angle of the eyepiece is greater than 54 degrees.
9. The eyepiece of claim 1, wherein the diopter of the eyepiece is greater than 1000 degrees.
10. The eyepiece of claim 1, wherein a percent distortion value of the eyepiece is less than 2.3.
11. The eyepiece of claim 1, wherein the eyepiece is less than 30mm in length.
12. The eyepiece of claim 1, wherein the eyepiece has an entrance pupil distance of 15mm and an entrance pupil diameter of 6 mm.
13. An eyepiece as claimed in claim 1 wherein the material of the eyepiece meets the following requirements:
Nd1>1.49，Nd2>1.58，Nd3>1.53，Nd4>1.49，Nd5>1.58；Vd1>45，Vd2>21，Vd3>45，Vd4>45，Vd5>21；
wherein Nd1, Nd2, Nd3, Nd4 and Nd5 respectively represent refractive indexes of the first lens, the second lens, the third lens, the fourth lens and the fifth lens at a d line, and Vd1, Vd2, Vd3, Vd4 and Vd5 respectively represent abbe numbers of the first lens, the second lens, the third lens, the fourth lens and the fifth lens at the d line.
14. A head-mounted electronic device, comprising:
the eyepiece of any one of claims 1-13; and
a display terminal located on an object side of the fifth lens.
15. The head-mounted electronic device of claim 14, wherein the display terminal comprises a display screen having a size of 0.7 inches, the display screen having a resolution of 1920 x 1080.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/107633 WO2019079996A1 (en) | 2017-10-25 | 2017-10-25 | Eyepiece and head-mounted electronic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110753870A CN110753870A (en) | 2020-02-04 |
| CN110753870B true CN110753870B (en) | 2021-12-28 |
Family
ID=66247655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780092196.3A Active CN110753870B (en) | 2017-10-25 | 2017-10-25 | Eyepiece and head-mounted electronic device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110753870B (en) |
| WO (1) | WO2019079996A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112147782B (en) * | 2019-06-26 | 2022-09-30 | 中强光电股份有限公司 | Optical lens and head-mounted display device |
| EP3809184A4 (en) * | 2019-07-29 | 2021-04-21 | Shenzhen Nade Optical Co., Ltd. | Eyepiece optical system and head-mounted display |
| CN110426838B (en) * | 2019-07-29 | 2023-06-20 | 深圳纳德光学有限公司 | Eyepiece optical system and head-mounted display |
| WO2021097851A1 (en) * | 2019-11-22 | 2021-05-27 | 天津欧菲光电有限公司 | Optical imaging system, image capture apparatus, and electronic device |
| WO2021102749A1 (en) * | 2019-11-27 | 2021-06-03 | 天津欧菲光电有限公司 | Optical imaging system, image capture apparatus, and electronic device |
| CN111694147B (en) * | 2020-06-24 | 2023-12-08 | 深圳珑璟光电科技有限公司 | Eyepiece lens and eyepiece optical system |
| CN116841007A (en) * | 2020-09-24 | 2023-10-03 | 玉晶光电(厦门)有限公司 | Optical lens group |
| CN113433705A (en) * | 2021-08-26 | 2021-09-24 | 沂普光电(天津)有限公司 | VR optical lens module |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011524020A (en) * | 2008-05-16 | 2011-08-25 | デイ アンド ナイト ディスプレイ システムズ エルエルシー | Night vision glasses |
| CN105527713A (en) * | 2016-01-26 | 2016-04-27 | 深圳市谛源光科有限公司 | Optical system used for virtual reality device |
| CN105739085A (en) * | 2016-04-29 | 2016-07-06 | 厦门灵境信息科技有限公司 | Optical eyepiece lens and head-mounted display equipment |
| CN206039037U (en) * | 2016-07-21 | 2017-03-22 | 苏州莱能士光电科技股份有限公司 | Optical system and head -mounted display apparatus visual |
| CN107024766A (en) * | 2016-02-02 | 2017-08-08 | 深圳纳德光学有限公司 | Big angle of visual field height is as the eyepiece optical system and head-wearing display device of matter |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000241705A (en) * | 1999-02-23 | 2000-09-08 | Minolta Co Ltd | Video display optical system |
| CN101609208B (en) * | 2009-07-20 | 2011-04-27 | 北京理工大学 | Eyepiece |
| JP6221732B2 (en) * | 2013-09-03 | 2017-11-01 | セイコーエプソン株式会社 | Virtual image display device |
| CN104965306A (en) * | 2015-07-10 | 2015-10-07 | 深圳纳德光学有限公司 | Large-field-angle eye lens optical system |
-
2017
- 2017-10-25 CN CN201780092196.3A patent/CN110753870B/en active Active
- 2017-10-25 WO PCT/CN2017/107633 patent/WO2019079996A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011524020A (en) * | 2008-05-16 | 2011-08-25 | デイ アンド ナイト ディスプレイ システムズ エルエルシー | Night vision glasses |
| CN105527713A (en) * | 2016-01-26 | 2016-04-27 | 深圳市谛源光科有限公司 | Optical system used for virtual reality device |
| CN107024766A (en) * | 2016-02-02 | 2017-08-08 | 深圳纳德光学有限公司 | Big angle of visual field height is as the eyepiece optical system and head-wearing display device of matter |
| CN105739085A (en) * | 2016-04-29 | 2016-07-06 | 厦门灵境信息科技有限公司 | Optical eyepiece lens and head-mounted display equipment |
| CN206039037U (en) * | 2016-07-21 | 2017-03-22 | 苏州莱能士光电科技股份有限公司 | Optical system and head -mounted display apparatus visual |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019079996A1 (en) | 2019-05-02 |
| CN110753870A (en) | 2020-02-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110753870B (en) | Eyepiece and head-mounted electronic device | |
| US9454062B2 (en) | Observation optical system, viewfinder equipped with observation optical system and method for manufacturing observation optical system | |
| JP6098838B2 (en) | Eyepiece optical system and imaging apparatus | |
| JP6257171B2 (en) | Eyepiece optical system and imaging apparatus having the same | |
| JP2016001209A (en) | Eyepiece and imaging apparatus | |
| JP2015075713A (en) | Eyepiece optical system and electronic apparatus | |
| JP5587017B2 (en) | Viewfinder eyepiece | |
| JP5745186B2 (en) | Eyepiece and imaging device | |
| US20180052383A1 (en) | Ocular lens and imaging apparatus | |
| EP3514596A1 (en) | Optical system, and head-mounted display apparatus employing same | |
| JP2016139131A (en) | Ocular optical system | |
| JP6195345B2 (en) | Eyepiece optical system, electronic viewfinder, and imaging device | |
| JP5387139B2 (en) | Imaging lens, camera device, and portable information terminal device | |
| JP2014115342A (en) | Finder optical system and imaging apparatus | |
| JP6435783B2 (en) | Eyepiece optics | |
| JP2022136208A (en) | Observation device | |
| JP2009003105A (en) | Finder optical system and imaging apparatus | |
| JPH04315118A (en) | Endoscope objective optical system | |
| JP2012181322A (en) | Eyepiece optical system and optical device | |
| CN115236847A (en) | Eyepiece optical system and head-mounted display device | |
| JP2010237430A (en) | Finder optical system of single lens reflex camera | |
| JP2015075592A (en) | Eyepiece lens and optical equipment including the same | |
| US9551864B2 (en) | Eyepiece lens and observation apparatus having the same | |
| JP4817758B2 (en) | Eyepiece optical system and viewfinder system using the same | |
| JP2019215411A (en) | Eyepiece optical system, electronic view finder, and imaging apparatus |
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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: Building 43, Dayun software Town, No. 8288 Longgang Avenue, Henggang street, Longgang District, Shenzhen City, Guangdong Province Applicant after: Shenzhen Ruoyu Technology Co.,Ltd. Address before: Building 43, Dayun software Town, No. 8288 Longgang Avenue, Henggang street, Longgang District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN ROYOLE TECHNOLOGIES Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |