CN204964881U - Head -mounted display apparatus is rather than optical lens system - Google Patents
Head -mounted display apparatus is rather than optical lens system Download PDFInfo
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- CN204964881U CN204964881U CN201520712578.XU CN201520712578U CN204964881U CN 204964881 U CN204964881 U CN 204964881U CN 201520712578 U CN201520712578 U CN 201520712578U CN 204964881 U CN204964881 U CN 204964881U
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Abstract
The utility model relates to a head -mounted display apparatus is rather than optical lens system. The utility model discloses an optical lens system extremely goes into the light side from the light -emitting side and includes first lens, second lens, third lens, fourth lens, the 5th lens and VI lenses along the optical axis according to the preface, and each lens all has the spherical lens of refractive index, and these first lens are negative optical power lens, and these second lens are positive refractive power lens, and the third lens are positive refractive power lens, and the fourth lens are positive refractive power lens, and the 5th lens are positive refractive power lens, and VI lenses is the negative optical power lens. The utility model discloses a head -mounted display apparatus, include: a casing and a display module are installed in this casing, and this display module includes: at least one as above optical lens system and the second surface orientation that lies in this VI lenses go into the epaxial at least display screen of light of light side. The utility model discloses when guaranteeing the angle of vision, guarantee that the image quality is good, pubescent focus, long work distance's characteristic.
Description
Technical field
The utility model relates to head-mounted display apparatus and its optical lens system, and especially relevant with its optical lens system to the head-mounted display apparatus of application six chip lens.
Background technology
In recent years, due to the rise of wearable electronic, make the display module comprising the microminaturization such as optical lens system and miniscope flourish, be widely used in head-mounted display apparatus.Head-mounted display apparatus is widely used in the fields such as military affairs, space flight, medical treatment, amusement, simulated training.In amusement, the visual effect of a shock can be built in suitable visual angle to user, and the optimum position viewing film making user place oneself in the midst of seemingly in the cinema screening Room is general.
In prior art, wear eyepiece system as CN104570323A proposes one and wear display device, be the eyepiece system of employing 4 chip lens, imaging definition can not meet the demand that consumer improves day by day.Again, CN103765292A proposes eyepiece system and its system focal length of image observing device longer (reaching 19mm); The system focal length of the six-element lens formula eyepiece system that CN101609208 proposes also relatively grows (16mm).
In addition, for optical lens system (eyepiece system), when dimension of object is determined, focal length is less, and field angle is larger, and the enlargement ratio of system is larger, but design difficulty also increases thereupon.Current immersion head-wearing display device, the focal length of most of optical lens system is in 18mm-35mm scope, and enlargement ratio is little, is not suitable for the less micro-display screen of size as image source.For LCOS (LiquidCrystalonSilicon, Chinese is: the attached silicon of liquid crystal) display and DLP (DigitalLightProcession, Chinese is: digital light process) this kind of micro-display screen of display, required illuminator need be placed between display screen and eyepiece; And eyepiece is mostly less to the operating distance of display screen at present, use cannot be met.For being applied to the Large visual angle angle eyepiece wearing display system, ratio chromatism, the curvature of field, astigmatism are all the aberrations affecting image quality, therefore need a kind of suitable optical design badly and thoroughly solve the problem.
Utility model content
Therefore, for above-mentioned technical matters, the utility model proposes a kind of head-mounted display apparatus and its optical lens system, by controlling the concave-convex curved surface arrangement of each lens, and be aided with other optical relation formulas control correlation parameter, while making it ensure field angle, ensure that image quality is excellent, and there is the characteristic of short focus, long reach.
According to the utility model, a kind of optical lens system is provided, one first lens, one second lens, one the 3rd lens, one the 4th lens, one the 5th lens and one the 6th lens are sequentially comprised from light emission side to incident side along an optical axis, each lens all has the spherical lens of refractive index, and have one towards light emission side and the first surface that light is passed through and towards incident side and the second surface making light pass through, wherein:
These first lens are negative-power lenses, and the first surface of these the first lens is concave part;
These second lens are positive power lens, and this second lens second surface is convex surface part;
3rd lens are positive power lens, and the second surface of the 3rd lens is convex surface part;
4th lens are positive power lens, and the first surface of the 4th lens is convex surface part, and its second surface is convex surface part;
5th lens are positive power lens, and the first surface of the 5th lens is convex surface part, and its second surface is convex surface part;
6th lens are negative-power lenses, and the first surface of the 6th lens is concave part;
5th lens and the 6th lens form a compound lens;
Wherein, the focal length of these the first lens is f1, and the focal length of these the second lens is f2, and the focal length of the 3rd lens is f3, and the focal length of the 4th lens is f4, and the focal length of this compound lens is f56, and the system focal length of this optical lens system is fs, and meets following relational expression:
-2<f1/fs<-1，
1.5<f2/fs<3，
4<f3/fs<7.5，
2<f4/fs<4.2，
2.5<f56/fs<5.5。
According to the utility model, a kind of head-mounted display apparatus is also provided, comprises:
One casing; And
One display module, is installed in this casing, comprises:
At least one optical lens system as above,
At least one display screen, is positioned at the second surface of the 6th lens towards on the optical axis of incident side.
Head-mounted display apparatus of the present utility model and its optical lens system, by controlling the concave-convex curved surface arrangement of each lens, and be aided with other optical relation formulas control correlation parameter, while making it ensure field angle, guarantee image quality is excellent, and has the characteristic of short focus, long reach.
Accompanying drawing explanation
Fig. 1 is the cross-section structure intention of the first embodiment of the present utility model;
Fig. 2 is that the curvature of field of the optical lens system of this first embodiment (illustrates: x with normalization visual field change schematic diagram
t＇ is meridianal curvature of field, x
s＇ is Sagittal field curvature);
Fig. 3 is that the distortion of the optical lens system of this first embodiment is with normalization visual field change schematic diagram;
Fig. 4 is that the chromatic longitudiinal aberration of the optical lens system of this first embodiment is with normalization visual field change schematic diagram;
Fig. 5 is the cross-section structure intention of the second embodiment of the present utility model;
Fig. 6 is that the curvature of field of the optical lens system of this second embodiment (illustrates: x with normalization visual field change schematic diagram
t＇ is meridianal curvature of field, x
s＇ is Sagittal field curvature);
Fig. 7 is that the distortion of the optical lens system of this second embodiment is with normalization visual field change schematic diagram;
Fig. 8 is that the chromatic longitudiinal aberration of the optical lens system of this second embodiment is with normalization visual field change schematic diagram;
Fig. 9 is the cross-section structure intention of the 3rd embodiment of the present utility model;
Figure 10 is that the curvature of field of the optical lens system of the 3rd embodiment (illustrates: x with normalization visual field change schematic diagram
t＇ is meridianal curvature of field, x
s＇ is Sagittal field curvature);
Figure 11 is that the distortion of the optical lens system of the 3rd embodiment is with normalization visual field change schematic diagram;
Figure 12 is that the chromatic longitudiinal aberration of the optical lens system of the 3rd embodiment is with normalization visual field change schematic diagram;
Figure 13 is the cross-section structure intention of the 4th embodiment of the present utility model;
Figure 14 is that the curvature of field of the optical lens system of the 4th embodiment (illustrates: x with normalization visual field change schematic diagram
t＇ is meridianal curvature of field, x
s＇ is Sagittal field curvature);
Figure 15 is that the distortion of the optical lens system of the 4th embodiment is with normalization visual field change schematic diagram;
Figure 16 is that the chromatic longitudiinal aberration of the optical lens system of the 4th embodiment is with normalization visual field change schematic diagram;
Figure 17 is the cross-section structure intention of the 5th embodiment of the present utility model;
Figure 18 is that the curvature of field of the optical lens system of the 5th embodiment (illustrates: x with normalization visual field change schematic diagram
t＇ is meridianal curvature of field, x
s＇ is Sagittal field curvature);
Figure 19 is that the distortion of the optical lens system of the 5th embodiment is with normalization visual field change schematic diagram;
Figure 20 is that the chromatic longitudiinal aberration of the optical lens system of the 5th embodiment is with normalization visual field change schematic diagram.
Embodiment
For further illustrating each embodiment, the utility model provides accompanying drawing.These accompanying drawings are a part for the utility model disclosure, and it is mainly in order to illustrate embodiment, and the associated description of instructions can be coordinated to explain the operation principles of embodiment.Coordinate with reference to these contents, those of ordinary skill in the art will be understood that other possible embodiments and advantage of the present utility model.Assembly in figure not drawn on scale, and similar element numbers is commonly used to assembly like representation class.
This section of instructions said " lens have positive light coke (or negative power) ", refers to described lens with the refractive index on Gaussian optics theory calculate optical axis out for just (or being negative).The first surface of lens, second surface are defined as the scope that the light for imaging passes through, wherein imaging light includes chief ray (chiefray) and marginal ray (marginalray), take I as optical axis, and lens are for axis of symmetry is radially symmetrical with this optical axis I.In addition, lens also comprise an extension (namely outside in circumference near zone radial direction region), are loaded in a lens barrel with for this lens combination, and desirable imaging light can't pass through this extension.Following embodiment is the extension asking accompanying drawing succinctly all to eliminate part.
In more detail, judge that the method for the concave, convex face shape of lens is as follows: the concave, convex of the face type shape of lens is to decide (light focus decision procedure) at light emission side A1 or incident side A2 parallel through the light (or light extension line) in this region and the intersection point of optical axis.For example, when light is by behind this region, light can focus on towards light emission side A1, and with the Focus Club position of optical axis I at light emission side A1, then this region is convex surface part.Otherwise if light is by behind this certain region, light can be dispersed, and the focus of its extension line and optical axis I is at incident side A2, then this region is concave part.In addition, the face shape of lens judges also can according to the judgment mode of those of ordinary skill in this field, and with R value (refer to the radius-of-curvature of optical axis, be often referred to the R value on the lens data storehouse (lensdata) in optical software), just negative judgement is concavo-convex.With the first surface towards light emission side A1, when R value is timing, be judged to be convex surface part, when R value is for time negative, be judged to be concave part; And with the second surface towards incident side A2, when R value is timing, be judged to be concave part, when R value is for time negative, be judged to be convex surface part, it is concavo-convex identical with light focus decision procedure that the method determines.
For the ease of representing the parameter of the utility model indication, define in this instructions and accompanying drawing:
The radius-of-curvature of the first surface S11 of these first lens L1 is R1, the radius-of-curvature of the second surface S12 of these first lens L1 is R2, the thickness of first surface S11 to second surface S12 on optical axis of these first lens L1 is D1, the radius-of-curvature of the first surface S21 of these second lens L2 is R3, the radius-of-curvature of the second surface S22 of these second lens L2 is R4, the thickness of first surface S21 to second surface S22 on optical axis of these second lens L2 is D2, the radius-of-curvature of the first surface S31 of the 3rd lens L3 is R5, the radius-of-curvature of the second surface S32 of the 3rd lens L3 is R6, the thickness of first surface S31 to second surface S32 on optical axis of the 3rd lens L3 is D3, the radius-of-curvature of the first surface S41 of the 4th lens L4 is R7, the radius-of-curvature of the second surface S42 of the 4th lens L4 is R8, the thickness of first surface S41 to second surface S42 on optical axis of the 4th lens L4 is D4, the radius-of-curvature of the first surface S51 of the 5th lens L5 is R9, the radius-of-curvature of the second surface S52 of the 5th lens L5 is R10, the thickness of first surface S51 to second surface S52 on optical axis of the 5th lens L5 is D5, the radius-of-curvature of the first surface S61 of the 6th lens L6 is R11, the radius-of-curvature of the second surface S62 of the 6th lens L6 is R12, the thickness of first surface S61 to second surface S62 on optical axis of the 6th lens L6 is D6, the second surface S12 of these first lens L1 and the distance of first surface S21 on optical axis I of these second lens L2, the clearance namely between the first lens L1 and the second lens L2 is d12, the second surface S22 of these second lens L2 and the distance of first surface S31 on optical axis I of the 3rd lens L3, the clearance namely between the second lens L2 and the 3rd lens L3 is d23, the second surface S32 of the 3rd lens L3 and the distance of first surface S41 on optical axis I of the 4th lens L4, the clearance namely between the 3rd lens L3 and the 4th lens L4 is d34, the second surface S42 of the 4th lens L4 and the distance of first surface S51 on optical axis I of the 5th lens L5, the clearance namely between the 4th lens L4 and the 5th lens L5 is d45, the second surface S52 of the 5th lens L5 and the distance of first surface S61 on optical axis I of the 6th lens L6, the clearance namely between the 5th lens L5 and the 6th lens L6 is d56, the focal length of these first lens L1 is f1, the focal length of these second lens L2 is f2, the focal length of the 3rd lens L3 is f3, the focal length of the 4th lens L4 is f4, the focal length of the compound lens that the 5th lens and the 6th lens are formed is f56, the system focal length of this optical lens system is fs, all clearances summation between these first lens L1 to the 6th lens L6 on optical axis I is AGa, the distance of exit pupil of this optical lens system (distanceofexitpupil, from the first surface S11 of the first lens L1 of optical lens system and optical axes crosspoint to the distance of exit pupil plane and optical axes crosspoint) is Lep.
Head-mounted display apparatus of the present utility model, comprising: a casing; And a display module, be installed in this casing, this display module comprises: at least one optical lens system and at least one display screen, and this display location is in the second surface of the 6th lens towards on the optical axis of incident side.After this, also comprise an adjusting part, for regulating the distance of the second surface of relative 6th lens of this display screen.
Optical lens system of the present utility model sequentially comprises one first lens, one second lens, one the 3rd lens, one the 4th lens, one the 5th lens and one the 6th lens from light emission side to incident side along an optical axis, each lens all has the spherical lens of refractive index, and have one towards light emission side and the first surface that light is passed through and towards incident side and the second surface making light pass through, wherein:
These first lens are negative-power lenses, and the first surface of these the first lens is concave part;
These second lens are positive power lens, and this second lens second surface is convex surface part;
3rd lens are positive power lens, and the second surface of the 3rd lens is convex surface part;
4th lens are positive power lens, and the first surface of the 4th lens is convex surface part, and its second surface is convex surface part;
5th lens are positive power lens, and the first surface of the 5th lens is convex surface part, and its second surface is convex surface part;
6th lens are negative-power lenses, and the first surface of the 6th lens is concave part;
5th lens and the 6th lens form a compound lens.
Wherein preferred, in order to realize better optical effect and make system length shorter, the radius-of-curvature of this second surface of the 5th lens is identical with the radius-of-curvature of this first surface of the 6th lens.Further, the 5th lens and the 6th lens can not have clearance, and the two glues together mutually.
Wherein, this optical lens system can also comprise the diaphragm (aperturestop) of an equivalence, is arranged on emergent pupil (exitpupil) position of this optical lens system.
Optical lens system of the present utility model only has aforementioned six lens with refractive index altogether, by designing the detail characteristic of each lens, and while it can be made to ensure field angle, ensureing that image quality is excellent, and having the characteristic of short focus, long reach.
Secondly, in order to shorten optical lens system, need to select suitable for lens thickness to reduce, and in the process reduced, have the good image quality of maintenance again concurrently, therefore the clearance configuration between the optical parametric such as focal length of lens thickness, lens and lens just seems important, proposes some qualificationss at this:
-2<f1/fs<-1，
1.5<f2/fs<3，
4<f3/fs<7.5，
2<f4/fs<4.2，
2.5<f56/fs<5.5。
By the qualifications of above-mentioned optical lens system, deviser can be assisted to design possess favorable optical performance, entire length effectively to shorten and technically feasible optical lens system.
Now with embodiment, the utility model is further illustrated by reference to the accompanying drawings.
embodiment 1:
Consult shown in Fig. 1, the optical lens system of this embodiment, sequentially comprises from light emission side A1 to incident side A2 along an optical axis I: a diaphragm (aperturestop) AS1, one first lens L1, one second lens L2, one the 3rd lens L3, one the 4th lens L4, one the 5th lens L5 and the 6th lens L6.Each lens all has the spherical lens of refractive index, and have one towards light emission side A1 and the first surface that light is passed through and towards incident side A2 and the second surface making light pass through.
First lens L1, the second lens L2 of the optical lens system of this embodiment, the 3rd lens L3, the 4th lens L4, the 5th lens L5 and the 6th lens L6 exemplarily formed with glass or plastic material at this, and it is as follows to form thin portion structure:
This diaphragm (aperturestop) AS1 is the diaphragm of an equivalence, the entity of these parts can not be set in practical application, this diaphragm AS1 is arranged on these first lens L1 towards on the optical axis I of light emission side A1, and is positioned at emergent pupil (exitpupil) position of this optical lens system.
These first lens L1 is a negative-power lenses, and the first surface S11 of these first lens L1 is concave part, and its second surface S12 is concave part.
These second lens L2 is a positive power lens, the first surface S21 of these second lens L2 is concave part, its second surface S22 is convex surface part, the absolute value of the radius of curvature R 3 of this first surface S21 is greater than the absolute value of the radius of curvature R 4 of this second surface S22, thus forms a positive light coke meniscus shaped lens.
3rd lens L3 is a positive power lens, the first surface S31 of the 3rd lens L3 is concave part, its second surface S32 is convex surface part, the absolute value of the radius of curvature R 5 of this first surface S31 is greater than the absolute value of the radius of curvature R 6 of this second surface S32, thus forms a positive light coke meniscus shaped lens.
4th lens L4 is a positive power lens, and the first surface S41 of the 4th lens L4 is convex surface part, and its second surface S42 is convex surface part, thus forms a positive light coke biconvex lens.
5th lens L5 is a positive power lens, and the first surface S51 of the 5th lens L5 is convex surface part, and its second surface S52 is convex surface part.
6th lens L6 is a negative-power lenses, and the first surface S61 of the 6th lens L6 is concave part, and its second surface S62 is concave part.
5th lens L5 and the 6th lens L6 forms a compound lens L56.
Wherein, the radius of curvature R 10 of this second surface S52 of the 5th lens L5 of this embodiment is identical with the radius of curvature R 11 of this first surface S61 of the 6th lens L6.Further, the 5th lens L5 and the 6th lens L6 composes one mutually.
In the present embodiment, design between this first, second, third, fourth, the 5th lens L1, L2, L3, L4, L5 and all there is clearance.But in other embodiments, aforementioned wherein arbitrary clearance also can not be had, and as: be corresponding each other by the surface profile design of two relative lens, and can fit each other, to eliminate clearance therebetween.It can thus be appreciated that in this embodiment, have 4 clearances between these first lens L1 to the 6th lens L6 on optical axis I, this clearance summation is AGa.
In this embodiment, from the first lens L1 to the 6th lens L6, shown in the following form of each optics of lens parameter:
In this embodiment, clearance d12 between first lens L1 and the second lens L2 is 0.562mm, clearance d23 between second lens L2 and the 3rd lens L3 is 0.1mm, clearance d34 between 3rd lens L3 and the 4th lens L4 is 0.1mm, clearance d45 between 4th lens L4 and the 5th lens L5 is 0.1mm, clearance d56 between 5th lens L5 and the 6th lens L6 is 0mm, thus all clearances summation AGa=d12+d23+d34+d45+d56=0.862 millimeter (mm) calculated between these first lens L1 to the 6th lens L6 on optical axis I, the focal distance f 1 of these first lens L1 is-13.3156mm, the focal distance f 2 of these second lens L2 is 20.8635mm, the focal distance f 3 of the 3rd lens L3 is 63.5613mm, the focal distance f 4 of the 4th lens L4 is 26.7815mm, the focal distance f 56 of compound lens L56 is 51.6212mm, the system focal distance f s of this optical lens system is 11.5587mm, the distance of exit pupil Lep of this optical lens system is 16.437mm.
Known through simple computation: f1/fs=-1.152, f2/fs=1.805, f3/fs=5.499, f4/fs=2.317, f56/fs=4.466, Lep/AGa=19.068.The optical lens system of this embodiment all meets above-mentioned all conditions limitation type.
According to above-mentioned optical lens system, the head-mounted display apparatus of this embodiment, comprising: a casing and be installed on a display module in this casing.This display module comprises: at least one above-mentioned optical lens system and at least one display screen MDP1, and this display screen MDP1 is positioned at the second surface S62 of the 6th lens L6 towards on the optical axis I of incident side A2.The head-mounted display apparatus of this embodiment, distance (being called " operating distance ") between the second surface S62 of this display screen MDP1 and the 6th lens L6 can reach 9.23mm, can meet the space requirement of the illumination section of miniature display screen (as LCOS micro-display).When the head-mounted display apparatus of this embodiment is worn, human eye pupil position overlaps with the exit pupil position (being also the position of the diaphragm AS1 of equivalence) of this optical lens system, and for ensureing that the rotation of human eye all drops within the scope of the emergent pupil of this optical lens system, emergent pupil is that diameter is greater than human eye pupil average.Human eye normal pupil diameter is 2-4mm, and the 3mm that averages is placed in exit pupil position, and the diameter of the equivalent stop AS1 in design exceedes the pupil diameter of human eye.Simultaneously, consult shown in Fig. 2, Fig. 3, Fig. 4, when behaviour eye pupil bore dia is 3mm, this optical lens system aberration diagram (being that the curvature of field, distortion and chromatic longitudiinal aberration are bent with normalization visual field change schematic diagram respectively), shows this optical lens system and has higher optical property.
It can thus be appreciated that the field angle of this embodiment reaches 45 °, there is longer operating distance (9.23mm), meet the space requirement of the backlight of miniature display screen; Simultaneously known according to Fig. 2 to Fig. 4, this optical lens system corrects the aberrations such as the curvature of field, astigmatism, ratio chromatism, and image quality is better, and distortion is less than 2.5%, within human eye tolerance interval, this embodiment goes for 0.37 inch of micro-display screen that resolution is 1366 × 768.
embodiment 2:
Consult shown in Fig. 5, the optical lens system of this embodiment, sequentially comprises from light emission side A1 to incident side A2 along an optical axis I: a diaphragm (aperturestop) AS1, one first lens L1, one second lens L2, one the 3rd lens L3, one the 4th lens L4, one the 5th lens L5 and the 6th lens L6.Each lens all has the spherical lens of refractive index, and have one towards light emission side A1 and the first surface that light is passed through and towards incident side A2 and the second surface making light pass through.In order to make the drawing of accompanying drawing more succinct, only mark the label on the surface different from embodiment 1 in the accompanying drawing of this embodiment, following embodiment is all like this, repeats no more.
The face type design and implementation example 1 of each lens of this embodiment is substantially identical, and difference is: the second surface S12 of the first lens L1 of this embodiment is plane.In addition, radius-of-curvature and the thickness of each lens on optical axis of each lens of this embodiment are slightly different from embodiment 1, in this embodiment, from the first lens L1 to the 6th lens L6, shown in the following form of each optics of lens parameter:
In this embodiment, clearance d12 between first lens L1 and the second lens L2 is 0.513mm, clearance d23 between second lens L2 and the 3rd lens L3 is 0.1mm, clearance d34 between 3rd lens L3 and the 4th lens L4 is 0.1mm, clearance d45 between 4th lens L4 and the 5th lens L5 is 0.1mm, clearance d56 between 5th lens L5 and the 6th lens L6 is 0mm, thus all clearances summation AGa=d12+d23+d34+d45+d56=0.813 millimeter (mm) calculated between these first lens L1 to the 6th lens L6 on optical axis I, the focal distance f 1 of these first lens L1 is-12.2228mm, the focal distance f 2 of these second lens L2 is 18.7687mm, the focal distance f 3 of the 3rd lens L3 is 76.2448mm, the focal distance f 4 of the 4th lens L4 is 28.1994mm, the focal distance f 56 of compound lens L56 is 57.9280mm, the system focal distance f s of this optical lens system is 11.5856mm, the distance of exit pupil Lep of this optical lens system is 16.773mm.
Known through simple computation: f1/fs=-1.055, f2/fs=1.62, f3/fs=6.581, f4/fs=2.434, f56/fs=5.000, Lep/AGa=11.586.The optical lens system of this embodiment all meets above-mentioned all conditions limitation type.
According to above-mentioned optical lens system, distance (being called " operating distance ") between this display screen MDP1 of the head-mounted display apparatus of this embodiment and the second surface S62 of the 6th lens L6 can reach 9.31mm, can meet the space requirement of the illumination section of miniature display screen (as LCOS micro-display).
Simultaneously, consult shown in Fig. 6, Fig. 7, Fig. 8, when behaviour eye pupil bore dia is 3mm, this optical lens system aberration diagram (being that the curvature of field, distortion and chromatic longitudiinal aberration are bent with normalization visual field change schematic diagram respectively), shows this optical lens system and has higher optical property.
embodiment 3:
Consult shown in Fig. 9, the optical lens system of this embodiment, sequentially comprises from light emission side A1 to incident side A2 along an optical axis I: a diaphragm (aperturestop) AS1, one first lens L1, one second lens L2, one the 3rd lens L3, one the 4th lens L4, one the 5th lens L5 and the 6th lens L6.Each lens all has the spherical lens of refractive index, and have one towards light emission side A1 and the first surface that light is passed through and towards incident side A2 and the second surface making light pass through.
The face type design and implementation example 1 of each lens of this embodiment is substantially identical, and difference is: the second surface S12 of the first lens L1 of this embodiment is convex surface, and the second surface S62 of the 6th lens L6 is plane.In addition, radius-of-curvature and the thickness of lens on optical axis of each lens of this embodiment are slightly different from embodiment 1, in this embodiment, from the first lens L1 to the 6th lens L6, shown in the following form of each optics of lens parameter:
In this embodiment, clearance d12 between first lens L1 and the second lens L2 is 0.6mm, clearance d23 between second lens L2 and the 3rd lens L3 is 0.1mm, clearance d34 between 3rd lens L3 and the 4th lens L4 is 0.1mm, clearance d45 between 4th lens L4 and the 5th lens L5 is 0.1mm, clearance d56 between 5th lens L5 and the 6th lens L6 is 0mm, thus all clearances summation AGa=d12+d23+d34+d45+d56=0.900 millimeter (mm) calculated between these first lens L1 to the 6th lens L6 on optical axis I, the focal distance f 1 of these first lens L1 is-22.9542mm, the focal distance f 2 of these second lens L2 is 31.9116mm, the focal distance f 3 of the 3rd lens L3 is 82.8362mm, the focal distance f 4 of the 4th lens L4 is 26.8839mm, the focal distance f 56 of compound lens L56 is 30.9523mm, the system focal distance f s of this optical lens system is 11.5580mm, the distance of exit pupil Lep of this optical lens system is 15.398mm.
Known through simple computation: f1/fs=-1.986, f2/fs=2.761, f3/fs=7.167, f4/fs=2.326, f56/fs=2.678, Lep/AGa=17.109.The optical lens system of this embodiment all meets above-mentioned all conditions limitation type.
According to above-mentioned optical lens system, distance (being called " operating distance ") between this display screen MDP1 of the head-mounted display apparatus of this embodiment and the second surface S62 of the 6th lens L6 can reach 8.394mm, can meet the space requirement of the illumination section of miniature display screen (as LCOS micro-display).
Simultaneously, consult shown in Figure 10, Figure 11, Figure 12, when behaviour eye pupil bore dia is 3mm, this optical lens system aberration diagram (being that the curvature of field, distortion and chromatic longitudiinal aberration are bent with normalization visual field change schematic diagram respectively), shows this optical lens system and has higher optical property.
embodiment 4:
Consult shown in Figure 13, the optical lens system of this embodiment, sequentially comprises from light emission side A1 to incident side A2 along an optical axis I: a diaphragm (aperturestop) AS1, one first lens L1, one second lens L2, one the 3rd lens L3, one the 4th lens L4, one the 5th lens L5 and the 6th lens L6.Each lens all has the spherical lens of refractive index, and have one towards light emission side A1 and the first surface that light is passed through and towards incident side A2 and the second surface making light pass through.
The face type design and implementation example 1 of each lens of this embodiment is substantially identical, and difference is: the second surface S12 of the first lens L1 of this embodiment is convex surface, and the first surface S31 of the 3rd lens L3 is convex surface.In addition, radius-of-curvature and the thickness of each lens on optical axis of each lens of this embodiment are slightly different from embodiment 1, in this embodiment, from the first lens L1 to the 6th lens L6, shown in the following form of each optics of lens parameter:
In this embodiment, clearance d12 between first lens L1 and the second lens L2 is 0.575mm, clearance d23 between second lens L2 and the 3rd lens L3 is 0.1mm, clearance d34 between 3rd lens L3 and the 4th lens L4 is 0.1mm, clearance d45 between 4th lens L4 and the 5th lens L5 is 0.1mm, clearance d56 between 5th lens L5 and the 6th lens L6 is 0mm, thus all clearances summation AGa=d12+d23+d34+d45+d56=0.875 millimeter (mm) calculated between these first lens L1 to the 6th lens L6 on optical axis I, the focal distance f 1 of these first lens L1 is-17.2909mm, the focal distance f 2 of these second lens L2 is 26.6583mm, the focal distance f 3 of the 3rd lens L3 is 46.4210mm, the focal distance f 4 of the 4th lens L4 is 30.8973mm, the focal distance f 56 of compound lens L56 is 38.5206mm, the system focal distance f s of this optical lens system is 11.5504mm, the distance of exit pupil Lep of this optical lens system is 15.924mm.
Known through simple computation: f1/fs=-1.497, f2/fs=2.308, f3/fs=4.019, f4/fs=2.675, f56/fs=3.335, Lep/AGa=18.199.The optical lens system of this embodiment all meets above-mentioned all conditions limitation type.
According to above-mentioned optical lens system, distance (being called " operating distance ") between this display screen MDP1 of the head-mounted display apparatus of this embodiment and the second surface S62 of the 6th lens L6 can reach 8.752mm, can meet the space requirement of the illumination section of miniature display screen (as LCOS micro-display).
Simultaneously, consult shown in Figure 14, Figure 15, Figure 16, when behaviour eye pupil bore dia is 3mm, this optical lens system aberration diagram (being that the curvature of field, distortion and chromatic longitudiinal aberration are bent with normalization visual field change schematic diagram respectively), shows this optical lens system and has higher optical property.
embodiment 5:
Consult shown in Figure 17, the optical lens system of this embodiment, sequentially comprises from light emission side A1 to incident side A2 along an optical axis I: a diaphragm (aperturestop) AS1, one first lens L1, one second lens L2, one the 3rd lens L3, one the 4th lens L4, one the 5th lens L5 and the 6th lens L6.Each lens all has the spherical lens of refractive index, and have one towards light emission side A1 and the first surface that light is passed through and towards incident side A2 and the second surface making light pass through.
The face type design and implementation example 1 of each lens of this embodiment is substantially identical, difference is: the first surface S21 of the second lens L2 of this embodiment is plane, the second curved surface S52 of the 5th lens L5 and the first surface S61 of the 6th lens L6 has a clearance (not gluing together each other), and the clearance d56 namely between the 5th lens L5 and the 6th lens L6 is greater than 0.In addition, radius-of-curvature and the thickness of each lens on optical axis of each lens of this embodiment are slightly different from embodiment 1, in this embodiment, from the first lens L1 to the 6th lens L6, shown in the following form of each optics of lens parameter:
In this embodiment, clearance d12 between first lens L1 and the second lens L2 is 0.373mm, clearance d23 between second lens L2 and the 3rd lens L3 is 0.1mm, clearance d34 between 3rd lens L3 and the 4th lens L4 is 0.1mm, clearance d45 between 4th lens L4 and the 5th lens L5 is 0.1mm, clearance d56 between 5th lens L5 and the 6th lens L6 is 0.15mm, thus all clearances summation AGa=d12+d23+d34+d45+d56=0.823 millimeter (mm) calculated between these first lens L1 to the 6th lens L6 on optical axis I, the focal distance f 1 of these first lens L1 is-13.6384mm, the focal distance f 2 of these second lens L2 is 18.8742mm, the focal distance f 3 of the 3rd lens L3 is 49.0060mm, the focal distance f 4 of the 4th lens L4 is 46.5787mm, the focal distance f 56 of compound lens L56 is 31.8076mm, the system focal distance f s of this optical lens system is 11.5580mm, the distance of exit pupil Lep of this optical lens system is 16.100mm.
Known through simple computation: f1/fs=-1.180, f2/fs=1.633, f3/fs=4.240, f4/fs=4.030, f56/fs=2.752, Lep/AGa=19.563.The optical lens system of this embodiment all meets above-mentioned all conditions limitation type.
According to above-mentioned optical lens system, distance (being called " operating distance ") between this display screen MDP1 of the head-mounted display apparatus of this embodiment and the second surface S62 of the 6th lens L6 can reach 8.923mm, can meet the space requirement of the illumination section of miniature display screen (as LCOS micro-display).
Simultaneously, consult shown in Figure 18, Figure 19, Figure 20, when behaviour eye pupil bore dia is 3mm, this optical lens system aberration diagram (being that the curvature of field, distortion and chromatic longitudiinal aberration are bent with normalization visual field change schematic diagram respectively), shows this optical lens system and has higher optical property.
In summary, the head-mounted display apparatus of above-mentioned multiple embodiment of the present utility model and its optical lens system are arranged by the concave-convex curved surface controlling each lens, and be aided with other optical relation formulas control correlation parameter, while making it ensure field angle, guarantee image quality is excellent, and has the characteristic of short focus, long reach.
Although specifically show in conjunction with preferred embodiment and describe the utility model; but those skilled in the art should be understood that; not departing from the spirit and scope of the present utility model that appended claims limits; can make a variety of changes the utility model in the form and details, be protection domain of the present utility model.
Claims (6)
1. an optical lens system, one first lens (L1), one second lens (L2), one the 3rd lens (L3), one the 4th lens (L4), one the 5th lens (L5) and one the 6th lens (L6) are sequentially comprised from light emission side (A1) to incident side (A2) along an optical axis (I), each lens all has the spherical lens of refractive index, and have one towards light emission side (A1) and the first surface that light is passed through and towards incident side (A2) and the second surface making light pass through, wherein:
These first lens (L1) are negative-power lenses, and the first surface (S11) of these the first lens (L1) is concave part;
These second lens (L2) are positive power lens, and this second lens (L2) second surface (S22) is convex surface part;
3rd lens (L3) are positive power lens, and the second surface (S32) of the 3rd lens (L3) is convex surface part;
4th lens (L4) are positive power lens, and the first surface (S41) of the 4th lens (L4) is convex surface part, and its second surface (S42) is convex surface part;
5th lens (L5) are positive power lens, and the first surface (S51) of the 5th lens (L5) is convex surface part, and its second surface (S52) is convex surface part;
6th lens (L6) are negative-power lenses, and the first surface (S61) of the 6th lens (L6) is concave part;
5th lens (L5) and the 6th lens (L6) form a compound lens (L56);
Wherein, the focal length of these the first lens (L1) is f1, the focal length of these the second lens (L2) is f2, the focal length of the 3rd lens (L3) is f3, the focal length of the 4th lens (L4) is f4, the focal length of this compound lens (L56) is f56, and the system focal length of this optical lens system is fs, and meets following relational expression:
-2<f1/fs<-1，
1.5<f2/fs<3，
4<f3/fs<7.5，
2<f4/fs<4.2，
2.5<f56/fs<5.5。
2. optical lens system according to claim 1, is characterized in that: the radius-of-curvature of this second surface (S52) of the 5th lens (L5) is identical with the radius-of-curvature of this first surface (S61) of the 6th lens (L6).
3. optical lens system according to claim 2, is characterized in that: this second surface (S52) of the 5th lens (L5) and this first surface (S61) of the 6th lens (L6) glue together mutually.
4. the optical lens system according to claim 1 or 2 or 3, it is characterized in that: five clearance summations between these first lens (L1) to the 6th lens (L6) on optical axis (I) are AGa, the distance of exit pupil of this optical lens system is Lep, and also meets following condition formulae: 15≤Lep/AGa≤25.
5. a head-mounted display apparatus, comprising:
One casing; And
One display module, is installed in this casing, comprises:
At least one optical lens system according to any one of Claims 1-4,
At least one display screen (MDP1), is positioned at the second surface (S62) of the 6th lens (L6) towards on the optical axis (I) of incident side (A2).
6. head-mounted display apparatus according to claim 5, is characterized in that: also comprise an adjusting part, for regulating the distance of this display screen (MDP1) second surface (S62) of the 6th lens (L6) relatively.
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| CN201520712578.XU CN204964881U (en) | 2015-09-15 | 2015-09-15 | Head -mounted display apparatus is rather than optical lens system |
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| CN201520712578.XU CN204964881U (en) | 2015-09-15 | 2015-09-15 | Head -mounted display apparatus is rather than optical lens system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068253A (en) * | 2015-09-15 | 2015-11-18 | 厦门灵境信息科技有限公司 | Head-mounted display device and optical lens system thereof |
| CN111610631A (en) * | 2019-02-22 | 2020-09-01 | 京东方科技集团股份有限公司 | Optical system and near-to-eye display device |
-
2015
- 2015-09-15 CN CN201520712578.XU patent/CN204964881U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068253A (en) * | 2015-09-15 | 2015-11-18 | 厦门灵境信息科技有限公司 | Head-mounted display device and optical lens system thereof |
| CN111610631A (en) * | 2019-02-22 | 2020-09-01 | 京东方科技集团股份有限公司 | Optical system and near-to-eye display device |
| CN111610631B (en) * | 2019-02-22 | 2021-08-17 | 京东方科技集团股份有限公司 | Optical system and near-to-eye display device |
| US11536962B2 (en) | 2019-02-22 | 2022-12-27 | Beijing Boe Optoelectronics Technology Co., Ltd. | Optical system and near-eye display device |
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Effective date of registration: 20170112 Address after: The Lake District of Xiamen City, Fujian province 361000 Fang Hubei road two No. 1505 5 C District Six Patentee after: Xiamen Mu Yu Mdt InfoTech Ltd Address before: The Lake District of Xiamen City, Fujian province 361000 Fang Hubei two road 1505, 5 floor Patentee before: XIAMEN LINGJING INFORMATION TECHNOLOGY CO., LTD. |
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