CN205176383U - Big angle of vision eyepiece optical system - Google Patents
Big angle of vision eyepiece optical system Download PDFInfo
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- CN205176383U CN205176383U CN201520760316.0U CN201520760316U CN205176383U CN 205176383 U CN205176383 U CN 205176383U CN 201520760316 U CN201520760316 U CN 201520760316U CN 205176383 U CN205176383 U CN 205176383U
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Abstract
The utility model provides a surface is protruding in the image source, and two optical surface camber directions on the third lens are the same and concave to the image source for wearing the eyepiece optical system of demonstration and wear display device, this eyepiece optical system include from people's eye to the image source first lens, second lens and the third lens of arranging in proper order along optical axis orientation coaxial, and wherein, first and second battery of lenss become the cemented doublet, and combination focal power be the positive value, and the second lens incline near the image source simultaneously, the effective focal length of cemented doublet, third lens and eyepiece system satisfies certain relation, and interval and system's length of cemented doublet and third lens satisfy certain relation. Should wear display device and include this eyepiece optical system, image display ware and structural support, the demonstration size and the pixel size of image display ware satisfy certain relation to obtain better experience effect. This eyepiece optical system and wear display device and have characteristics such as the big angle of vision, low distortion, low colour difference, imaging are even.
Description
Technical field
The utility model relates to optical technical field, particularly relates to a kind of eyepiece optical system being applicable to head-mounted display or similar device.
Background technology
High telepresenc display can give beholder experience on the spot in person, has extensive and deep application in fields such as national defence, medical treatment, education, industry, amusements.The key element of high telepresenc display is to provide the display effect of Large visual angle angle, solid, high definition, high image quality.Traditional flat panel display is limited to the factor such as manufacturing cost, display volume, is difficult to realize commercial high telepresenc display, and wearing display (HeadMountedDisplay) becomes the major technique and mode that realize high telepresenc.The form wearing display has multiple, and its ultimate principle is all by eyepiece optical system, and the image on electronical display image source is carried out optical amplifier, forms virtual image, before being presented on human eye.
High telepresenc display is normally worn on the head of user by the mode of dressing, realize Large visual angle angle, high telepresenc visual effect simultaneously, consider that user wears comfortableness and the convenience of rear viewing display, the exit pupil diameter of eyepiece optical system and distance of exit pupil are crucial parameters.The user that large distance of exit pupil can meet and has defective vision--such as myopia or long sight--, wear wear display while the glasses of still wear corrective eyesight, embody effect and easy to use farthest to strengthen.And large exit pupil diameter can meet the eyepiece display frame that user can observe experience Large visual angle angle easily, clearly, reduce the inconvenience that the equipment accuracy requirement of wearing and user's interpupillary distance regulate, the comfort and the high telepresenc that significantly strengthen eyepiece observer are experienced simultaneously.
Patent documentation 1 (China Patent Publication No. CN204536648U) provides one and wears eyepiece system and wear display device, the eyepiece of this utility model achieves Large visual angle angle (>70 degree), but distance of exit pupil and exit pupil diameter are large not, and could not realize the high-level optical property at more Large visual angle angle.
Patent documentation 2 (U.S. Patent Publication No. US5815317A), patent documentation 3 (U.S. Patent Publication No. US5877900A), patent documentation 4 (U.S. Patent Publication No. US6349004B1), patent documentation 5 (U.S. Patent Publication No. US7804651B2), patent documentation 6 (U.S. Patent Publication No. US8736967), patent documentation 7 (U.S. Patent Publication No. US20140218806A1) each provides a kind of eyepiece optical system, all have employed the structural form that balsaming lens and other lens combination use, the experience effect of large distance of exit pupil (>18mm) can be realized, but large all not (≤62 °, the apparent field angle of above-mentioned eyepiece system), do not realize large distance of exit pupil simultaneously, the eyepiece optics effect of large exit pupil diameter and ultra-wide angle, These parameters determines the visual experience effect of high telepresenc and wears the comfort level of experience, and meet above-mentioned optical property simultaneously, the design difficulty of system and the optimization difficulty of aberration can be very large.
Patent documentation 8 (U.S. Patent Publication No. US5774270A), patent documentation 9 (U.S. Patent Publication No. US6069750A) each provide a kind of eyepiece optical system, Large visual angle angle (65 ° ~ 70 °) all can be realized on the basis of large distance of exit pupil, but above-mentioned eyepiece optical system all has many pieces of glass lenss to form, its optical element is many, weight is large, complex structure, manufacturing cost are higher, is difficult to meet comfortablely wear experience.
Patent documentation 10 (China Patent Publication No. CN1101470262B), patent documentation 11 (U.S. Patent Publication No. US20130188072A1) each provide a kind of eyepiece optical system, all can realize the large distance of exit pupil of more than 20mm, but field angle less (<35 °), non-Large visual angle angle eyepiece optical system, is difficult to realize high-immersion.
Patent documentation 12 (China Patent Publication No. CN204360008U) provides a kind of micro-display eyepiece and wears visual device, the eyepiece of this utility model can realize high optical transfer function, the distance of exit pupil of its 14mm is large not, cannot meet the demand that user wears correcting vision glasses.In addition, this utility model employs Fresnel Lenses, compares with aspherical lens with traditional spheric glass, and its processing and manufacturing difficulty is large, high to the assembling complicacy of product, is unfavorable for that stabilization is produced.
Patent documentation 13 (China Patent Publication No. CN104503076A) provides a kind of micro-display eyepiece and helmet, the eyepiece of this utility model is made up of two panels biconvex lens, 80 ° of field angle can be realized, but the distance of exit pupil of its 10mm is too small, its distortion comparatively large (>28%), can be poor to the display quality of side images, be unfavorable for the visual experience of user's height telepresenc.Meanwhile, the two panels lens of the eyepiece system of above-mentioned utility model all have employed the lens form that aspheric surface and diffraction surfaces combine, and the processing and manufacturing difficulty of lens is large, assembling complicacy is high, is unfavorable for that stabilization is produced.
Utility model content
The utility model proposes a kind of eyepiece optical system, be applicable to head-mounted display and similar device.In order to solve existing Large visual angle wear display be difficult to realize simultaneously high resolving power, low aberration, low distortion, long connect eye-distance from etc. the technical matters of index.
The utility model is achieved through the following technical solutions:
Described eyepiece optical system comprises from eye-observation side to image source side along coaxial the first lens, the second lens and the 3rd lens be arranged in order of optical axis direction, wherein the first lens near human eye side, the 3rd lens near image source side, image source light is successively watched by human eye by the 3rd lens, the second lens, the first lens.Described first lens and the second lens composition cemented doublet, with the aberration of corrective system better.The combined focal length of described cemented doublet be on the occasion of, and enough positive light coke can be provided to ensure that shown eyepiece optical system can realize Large visual angle angle.
Described cemented doublet is convex in image source direction near image source side surface, and the 3rd two, lens optical surface curvature direction is identical, recessed to image source direction, and the radius-of-curvature of described 3rd lens two optical surfaces meets following relationship:
1)0.85≦R31/R32≦30，
Wherein R31 represents the surface curvature radius of the 3rd lens near eyes side, and R32 represents the surface curvature radius of the 3rd lens near image source side.
The effective focal length of cemented doublet that simultaneously the first lens and the second lens form is f
12, the effective focal length of the 3rd lens is f
3, the effective focal length of this eyepiece system is f
w, and meet following relationship:
2)0.50<f
w/f
12<1.3,
3)-0.45<f
w/f
3<0.5,
As further improvement of the utility model, the distance interval between the cemented doublet of described first lens and the second lens composition and the 3rd lens meets following relational expression:
4)0.04<D
a/D
w<0.44,
Wherein D
arepresent along the optical surface of the second lens described in optical axis direction near image source side and the 3rd lens and depend merely on distance between the optical surface of person of modern times's eye side, D
wrepresent the total length of this nearly eye display eyepiece optical system, namely along the distance of optical axis direction first lens between optical surface center to the image source face of human eye side.
As further improvement of the utility model, two optical surfaces of described 3rd lens, the face type at least one face is even aspheric surface.In order to the aberration such as distortion, the curvature of field, astigmatism of control both optical system.
As further improvement of the utility model, the face type of two optical surfaces of described 3rd lens is all even aspheric surface.In order to the aberration such as distortion, the curvature of field, astigmatism of further control and optimize optical system.
As further improvement of the utility model, the optical surface of described first lens near human eye side and the second lens, near the face type of the optical surface of image source side, have at least one to be even aspheric surface.In order to control and optimize system higher order aberratons.
As further improvement of the utility model, the optical surface of described first lens, the second lens, the 3rd lens, the surperficial face type except cemented surface is all even aspheric surface.In order to further control and optimize system higher order aberratons, make the field angle that described eyepiece optical system can reach larger, there is higher optics picture element simultaneously.
As further improvement of the utility model, described aspheric expression formula is:
Wherein, z is the rise of optical surface, and c is aspheric surface summit place curvature, and k is asphericity coefficient, α 2,4,6 ... for each rank coefficient, r is the range coordinate that on curved surface, point arrives lens system optical axis.
As further improvement of the utility model, two gummed mirrors of described first lens and the n-negative form of the second lens composition, namely the first lens strength be on the occasion of, the second lens strength is negative value.
As further improvement of the utility model, the material behavior of described first lens, the second lens, the 3rd lens meets following requirement: 1.65<Nd1<1.89,1.65<Nd2<1.85,1.48<Nd3<1.84, Nd1, Nd2, Nd3 represent that the first lens, the second lens, the 3rd lens are in the refractive index of d line respectively; 35<Vd1<60,21<Vd2<35,21<Vd3<60, Vd1, Vd2, Vd3 represent that the first lens, the second lens, the 3rd lens are at the Abbe number of d line respectively.
As further improvement of the utility model, described cemented doublet, effective focal length between the 3rd lens and described eyepiece meet following relational expression, further to reach better imaging effect:
5)0.98<f
w/f
12<1.15,
6)-0.40<f
w/f
3<-0.10。
As further improvement of the utility model, the distance interval between described cemented doublet and the 3rd lens meets following relational expression further:
7)0.12<Da/Dw<0.32
As further improvement of the utility model, the material of described first lens and the second lens is optical glass, and the material of described 3rd lens is optical plastic.
The utility model comprises a kind of head-wearing display device simultaneously, described device comprises eyepiece optics system, structure stand and image display, and eyepiece is between human eye and this image display, structure stand, for connecting image display and eyepiece, meets observer simultaneously and wears use.
The eyepiece optical system of described eyepiece optical system described in above-mentioned utility model content.Its profile can be along optical axis center rotational symmetry form, or carries out invalid region excision based on indication range to eyepiece profile, to reduce device physical dimension, reduces installation weight.
Described image display can be transmission type lcd device, or active matrix/organic light emitting display (AMOLED).
Described head-wearing display device comprises two groups of identical eyepiece optical systems, uses to respectively observer's right and left eyes; Comprise an above-mentioned image and show device, the divided two width pictures that are processed into of display image coordinate one group of eyepiece optical system to use respectively, described image display is more than or equal to 4.6 inches along the full-size of length direction, use to binocular to provide enough display surface integrations to cut, guarantee there are enough distances, in order to coordinate human eye binocular vision between two width display frames after splitting simultaneously.
As further improvement of the utility model, described image display can be made up of two pieces of discrete displays, coordinates eyepiece optical system to use respectively, in order to reducing plant bulk, reduces image restriction difficulty, increases and use dirigibility.And the indication range of any a piece is less than or equal to 2.5 inches along the size of long side direction in described two pieces of displays.
As further improvement of the utility model, the physical size of the single pixel cell of described image display is more than or equal to 30 μm.In order to ensure that user can observe enough images clearly by this head-wearing display device.
Eyepiece optical system described in the utility model and head-wearing display device thereof, can realize Large visual angle angle, low distortion, low aberration, imaging effect evenly, is beneficial to human eye viewing, reaches the visual experience effect of high telepresenc.Described eyepiece optical system is while meeting above-mentioned important optical index, and exit pupil diameter is large and exit pupil position is far away, reduces positioning difficulty when user wears, adds use comfort.The optical system of this eyepiece can have employed spherical lens and non-spherical lens arrange in pairs or groups use, optical plastic and optical glass combinationally uses, and then while can realizing reaching high optical property, reduce manufacturing cost further and control the weight of product.
Accompanying drawing explanation
Fig. 1 is the light channel structure schematic diagram according to the utility model first embodiment eyepiece optical system;
Fig. 2 is the point range figure schematic diagram according to the utility model first embodiment eyepiece optical system;
Fig. 3 (a) is the curvature of field curve synoptic diagram of the eyepiece optical system according to the utility model first embodiment, and Fig. 3 (b) is the distortion curve schematic diagram of the eyepiece optical system according to the utility model first embodiment;
Fig. 4 is the light channel structure schematic diagram according to the utility model second embodiment eyepiece optical system;
Fig. 5 is the point range figure schematic diagram according to the utility model second embodiment eyepiece optical system;
Fig. 6 (a) is the curvature of field curve synoptic diagram of the eyepiece optical system according to the utility model second embodiment, and Fig. 6 (b) is the distortion curve schematic diagram figure of the eyepiece optical system according to the utility model second embodiment;
Fig. 7 is the light channel structure schematic diagram according to the utility model the 3rd embodiment eyepiece optical system;
Fig. 8 is the point range figure schematic diagram according to the utility model the 3rd embodiment eyepiece optical system;
Fig. 9 (a) is the curvature of field curve synoptic diagram of the eyepiece optical system according to the utility model the 3rd embodiment, and Fig. 9 (b) is the distortion curve schematic diagram of the eyepiece optical system according to the utility model the 3rd embodiment.
Figure 10 is the structural representation of the head-wearing display device according to the utility model the 4th embodiment.
Figure 11 is the decomposition texture schematic diagram of the head-wearing display device according to the utility model the 4th embodiment.
Figure 12 is the structural representation of the head-wearing display device according to the utility model the 5th embodiment.
Embodiment
To illustrate below in conjunction with accompanying drawing and embodiment further illustrates eyepiece optical system described in the utility model.
As shown in Figure 1, the light channel structure schematic diagram of the utility model first embodiment eyepiece optical system, from eye-observation side to display device I side (from left to right), is followed successively by diaphragm E, the first lens L
1, the second lens L
2, the 3rd lens L
2with display device I, wherein display device I is a flat panel display device, as image source.D
arepresent along the optical surface of the second lens described in optical axis direction near image source side and the 3rd lens and depend merely on distance between the optical surface of person of modern times's eye side, D
wrepresent the total length of this nearly eye display eyepiece optical system, namely along the distance of optical axis direction first lens between optical surface center to the image source face of human eye side.In the utility model, diaphragm E can be the emergent pupil of eyepiece optical system imaging, is a virtual bright dipping aperture, and the pupil of human eye, when stop position, can observe best imaging effect.In the present embodiment, the first lens L
1with the second lens L
2be combined into the cemented doublet of n-negative form, its combined focal length be on the occasion of, to ensure the field angle that eyepiece system is enough.3rd lens L
3focal power be negative value, and the face type of both sides optical surface is all even aspheric surface, with the system aberration such as correcting distorted, astigmatism fully.At this, with diaphragm E surface sequence number for 101, the rest may be inferred (from left to right), and display I surface is 107.
The design reference data of described first embodiment eyepiece optical system are as shown in table 1 below:
Table 1
According to the point range figure schematic diagram of the eyepiece optical system of the utility model first embodiment shown in accompanying drawing 2.The geometry of point range figure reflection optical system imaging, ignores diffraction effect, represents with the disc of confusion of specifying visual field, specified wavelength light focusing is formed as planar cross-sectional, can comprise the light of multiple visual field and multi-wavelength simultaneously.Therefore, the quality of optical system imaging quality can be weighed intuitively by the dense degree of point range figure disc of confusion, geomery, the aberration of optical system is intuitively weighed by the degree of misalignment of dot chart different wave length disc of confusion, the RMS radius (root mean square radii) of point range figure is less, and the image quality of optical system is higher.As can be seen from the point range figure according to the utility model first embodiment shown in accompanying drawing 2, each field rays of the present embodiment is little and even at the disc of confusion radius of image source plane (display device I), different wave length light is focusing on formation disc of confusion degree of misalignment with a visual field is low, optical aberration obtains well-corrected, can be observed overall display that is even, high optical property draw a portrait by described eyepiece optical system.
Accompanying drawing 3 (a) and accompanying drawing 3 (b) respectively illustrate the curvature of field according to the eyepiece of the utility model first embodiment and distortion curve.It symbolizes the curvature of field of the present embodiment, astigmatism and distortion aberration and controls better, can realize Large visual angle angle height picture element effect.
As shown in Figure 4, the light channel structure schematic diagram of the utility model second embodiment eyepiece optical system, relative to the first embodiment of the present utility model, the present embodiment is under the prerequisite keeping high optical property, by the adjustment to lens face type and focal length relation, further increase apparent field's scope of described eyepiece optical system.
From eye-observation side to display device I side (from left to right), be followed successively by diaphragm E, the first lens L
1, the second lens L
2, the 3rd lens L
2with display device I, wherein display device I is a flat panel display device, as image source.D
arepresent along the optical surface of the second lens described in optical axis direction near image source side and the 3rd lens and depend merely on distance between the optical surface of person of modern times's eye side, D
wrepresent the total length of this nearly eye display eyepiece optical system, namely along the distance of optical axis direction first lens between optical surface center to the image source face of human eye side.In the present embodiment, the first lens L
1with the second lens L
2be combined into the cemented doublet of n-negative form, its combined focal length be on the occasion of, to ensure the field angle that eyepiece system is enough.3rd lens L
3focal power be negative value, and the face type of both sides optical surface is all even aspheric surface, with the system aberration such as correcting distorted, astigmatism fully.At this, with diaphragm E surface sequence number for 101, the rest may be inferred (from left to right), and display I surface is 107.
Described second embodiment eyepiece design reference data are as shown in table 2 below:
Table 2
According to the point range figure schematic diagram of the eyepiece optical system of the utility model second embodiment shown in accompanying drawing 5.As can be seen from the figure, each field rays of the present embodiment is little and even at the disc of confusion radius of image source plane (display device I), different wave length light is focusing on formation disc of confusion degree of misalignment with a visual field is low, optical aberration obtains well-corrected, can be observed overall display that is even, high optical property draw a portrait by described eyepiece optical system.
Accompanying drawing 6 (a) and accompanying drawing 6 (b) respectively illustrate the curvature of field according to the eyepiece of the utility model first embodiment and distortion curve.It symbolizes the curvature of field of the present embodiment, astigmatism and distortion aberration and controls better, can realize Large visual angle angle height picture element effect.
As shown in Figure 7, the light channel structure schematic diagram of the utility model the 3rd embodiment eyepiece optical system, relative to the second embodiment of the present utility model, the present embodiment, by the face type of adjustment eyeglass, further increases apparent field's scope of described eyepiece optical system.
From eye-observation side to display device I side (from left to right), be followed successively by diaphragm E, the first lens L
1, the second lens L
2, the 3rd lens L
2with display device I, wherein display device I is a flat panel display device, as image source.D
arepresent along the optical surface of the second lens described in optical axis direction near image source side and the 3rd lens and depend merely on distance between the optical surface of person of modern times's eye side, D
wrepresent the total length of this nearly eye display eyepiece optical system, namely along the distance of optical axis direction first lens between optical surface center to the image source face of human eye side in the present embodiment, the first lens L
1with the second lens L
2be combined into the cemented doublet of n-negative form, its combined focal length be on the occasion of, to ensure the field angle that eyepiece system is enough, its second lens L
2the face type of non-cemented surface be even aspheric surface, with further corrective system higher order aberratons.3rd lens L
3focal power be negative value, and the face type of both sides optical surface is all even aspheric surface, with the system aberration such as correcting distorted, astigmatism fully.At this, with diaphragm E surface sequence number for 101, the rest may be inferred (from left to right), and display I surface is 107.
Described 3rd embodiment eyepiece design reference data are as shown in table 3 below:
Table 3
According to the dot chart schematic diagram of the eyepiece optical system of the utility model second embodiment shown in accompanying drawing 8.As can be seen from the figure, each field rays of the present embodiment is little and even at the disc of confusion radius of image source plane (display device I), different wave length light is focusing on formation disc of confusion degree of misalignment with a visual field is low, optical aberration obtains well-corrected, can be observed overall display that is even, high optical property draw a portrait by described eyepiece optical system.
Accompanying drawing 9 (a) and accompanying drawing 9 (b) respectively illustrate the curvature of field according to the eyepiece of the utility model first embodiment and distortion curve.It symbolizes the curvature of field of the present embodiment, astigmatism and distortion aberration and controls better, to realize Large visual angle angle height picture element effect further.
Every data of above-mentioned utility model embodiment all meet the requirement of the utility model forgoing relationship, and result is as following table 4:
Table 4
| f aw/f a | f bw/f b | D a/D w | R 31/R 32 | |
| Implement 1 | 1.07 | -0.38 | 0.32 | 1.36 |
| Implement 2 | 1.11 | -0.37 | 0.20 | 1.33 |
| Implement 3 | 0.98 | -0.24 | 0.14 | 1.35 |
To illustrate below in conjunction with accompanying drawing and embodiment further illustrates head-wearing display device described in the utility model.
It should be noted that, the utility model provide about head-wearing display device diagram only in a schematic way illustrate basic structure conception, so the assembly that in diagram, only display is relevant with head-wearing display device described in the utility model, and the component count not implemented according to reality, shape, size are drawn, when it is specifically implemented, the form of each assembly, quantity and ratio all can change, and its integral structure layout can refinement more, complexity.
Accompanying drawing 10 and accompanying drawing 11 illustrate the structural representation Sum decomposition structural representation of the head-wearing display device of the utility model the 4th embodiment respectively.Described device comprises two eyepieces 11, structure stand 12, image display 13.Wherein, eyepiece 11 uses eyepiece optical system described in the utility model embodiment two.Image display 13 uses diagonal-size to be more than or equal to the display screen of 4.6 inches, and display screen can be LCDs or organic light-emitting diode (OLED) display screen.
Specific implementation process, place before and after two eyepieces 11 and image display 13, be separately fixed on structure stand 12, and interval between two eyepieces 11 and image display 13 is equal, drops on the image planes position of eyepiece 11 optical system simultaneously along the display frame of optical axis direction image.Two eyepieces 11 are lived apart the left and right sides, form left and right form, and the parallel placement of optical axis, distance is 64mm.When observing use, human eye and image display 13 lay respectively at the both sides of eyepiece 11 along optical axis direction, and observer can be observed equivalence through eyepiece 11 and sees 2 meters of distances the virtual enlarged image being not less than 130 inches.
Structure stand 12 inside is provided with baffle plate along optical axis parallel direction, in the human eye visual field, the display frame of image display 13 is divided into two width pictures from centre, coordinate left and right eyepiece 11 to use respectively, and internal environment do delustring process, to strengthen virtual reality experience sense better.
The attached structural representation that Figure 12 shows that the head-wearing display device of the utility model the 5th embodiment.Described device comprises two eyepieces 21, structure stand 22, two image displays 23.Compared with embodiment four of the present utility model, the present embodiment employs two pieces of undersized image displays 23 of independence, two pieces of independent image displays have identical size and resolution, two eyepieces 21 in left and right are coordinated to use respectively, and each display indication range is less than or equal to 2.5 inches along the size of long side direction, the physical size of the single pixel cell of display is more than or equal to 30 μm, in order to ensure that user can observe enough images clearly by this head-wearing display device.Relative embodiment four, embodiment five feature be reduce plant bulk, reduce image restriction difficulty, increase system flexibility.
Above-described embodiment four and embodiment five are in specific implementation process, image display is all enclosed in structure stand inside, by means of only the light of the clear aperature outgoing display frame of left and right eyepiece, also prevent external environmental light from inciding inside configuration environment from the position beyond eyepiece simultaneously.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as belonging to protection domain of the present utility model.
Claims (10)
1. the eyepiece optical system shown for nearly eye at a ultra-large vision field angle, comprise along coaxial the first lens, the second lens and the 3rd lens be arranged in order of optical axis direction, wherein the first lens are near human eye side, 3rd lens are near image source side, image source light is successively watched by human eye by the 3rd lens, the second lens, the first lens, it is characterized in that: described first lens and the second lens composition cemented doublet, combined light focal power be on the occasion of, and the second lens are convex in image source direction near the surface of image source side; Two optical surface curvature directions of described 3rd lens are identical, all recessed to image source direction, and the radius-of-curvature of described 3rd lens two optical surfaces meets: 0.85≤R31/R32≤30, wherein, R31 is the surface curvature radiuses of the 3rd lens near human eye side, and R32 is the surface curvature radiuses of the 3rd lens near image source side; Meanwhile, the effective focal length of cemented doublet that the first lens and the second lens form is f
12, the effective focal length of the 3rd lens is f
3, the effective focal length of described eyepiece optical system is f
w, and f
wmeet: 0.50<f
w/ f
12<1.3 ,-0.45<f
w/ f
3<0.5.
2. eyepiece optical system according to claim 1, is characterized in that: the distance interval between the cemented doublet of described first lens and the second lens composition and the 3rd lens meets: 0.04<D
a/ D
w<0.44, wherein D
afor along the second lens described in optical axis direction near the optical surface center of image source side and the distance of the 3rd lens near the optical surface center of human eye side, D
wfor the total length of described eyepiece optical system, i.e. D
wfor along the distance of optical axis direction first lens between optical surface center to the image source face of human eye side.
3. eyepiece optical system according to claim 1 and 2, is characterized in that: two gummed mirrors of described first lens and the n-negative form of the second lens composition, namely the first lens strength be on the occasion of, the second lens strength is negative value.
4. eyepiece optical system according to claim 3, is characterized in that: the material behavior of described first lens, the second lens, the 3rd lens meets following requirement:
1.65<Nd1<1.89,1.65<Nd2<1.85,1.48<Nd3<1.84, wherein, Nd1, Nd2, Nd3 are respectively the first lens, the second lens, the 3rd lens in the refractive index of d line; 35<Vd1<60,21<Vd2<35,21<Vd3<60, wherein, Vd1, Vd2, Vd3 are respectively the first lens, the second lens, the 3rd lens at the Abbe number of d line.
5. eyepiece optical system according to claim 4, is characterized in that: described cemented doublet, the effective focal length of the 3rd lens and the effective focal length of described eyepiece optical system meet further: 0.98<f
w/ f
12<1.15 ,-0.40<f
w/ f
3<-0.10.
6. eyepiece optical system according to claim 5, is characterized in that: the distance interval between described cemented doublet and the 3rd lens meets further: 0.12<D
a/ D
w<0.32.
7. eyepiece optical system according to claim 6, is characterized in that: the material of described first lens and the second lens is optical glass, and the material of described 3rd lens is optical plastic.
8. a head-wearing display device, comprise image display, eyepiece optical system and structure stand, wherein eyepiece is between human eye and described image display, structure stand is for connecting image display and eyepiece optical system, meet observer simultaneously and wear use, it is characterized in that: described eyepiece optical system is the eyepiece optical system according to any one of claim 1-7.
9. head-wearing display device according to claim 8, is characterized in that: described image display comprises a display, and indication range is more than or equal to 4.6 inches along the full-size of length direction; Or described image display is the display that two sizes are identical with resolution, arranges in pairs or groups with two groups of eyepiece optical systems respectively and use, and each display indication range described is less than or equal to 2.5 inches along the size of long side direction.
10. head-wearing display device according to claim 9, is characterized in that: the physical size of the single valid pixel unit of described image display is more than or equal to 30 μm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520760316.0U CN205176383U (en) | 2015-09-28 | 2015-09-28 | Big angle of vision eyepiece optical system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520760316.0U CN205176383U (en) | 2015-09-28 | 2015-09-28 | Big angle of vision eyepiece optical system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137590A (en) * | 2015-09-28 | 2015-12-09 | 深圳纳德光学有限公司 | Large-field-of-view (LFOV) eyepiece optical system |
| CN107783294A (en) * | 2016-08-31 | 2018-03-09 | 深圳超多维科技有限公司 | A kind of VR display devices and VR display devices |
| TWI627441B (en) * | 2016-11-18 | 2018-06-21 | 玉晶光電股份有限公司 | Ocular optical system |
| TWI633340B (en) * | 2017-10-13 | 2018-08-21 | 玉晶光電股份有限公司 | Ocular optical system |
| CN109196521A (en) * | 2018-08-21 | 2019-01-11 | 深圳市汇顶科技股份有限公司 | Lens system, fingerprint identification device and terminal device |
| CN114236833A (en) * | 2021-11-30 | 2022-03-25 | 歌尔光学科技有限公司 | Optical system and head-mounted display equipment |
| CN114460747A (en) * | 2021-11-30 | 2022-05-10 | 歌尔光学科技有限公司 | Optical system and head-mounted display device |
| WO2023092421A1 (en) * | 2021-11-25 | 2023-06-01 | 京东方科技集团股份有限公司 | Optical system and vr display device |
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2015
- 2015-09-28 CN CN201520760316.0U patent/CN205176383U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137590A (en) * | 2015-09-28 | 2015-12-09 | 深圳纳德光学有限公司 | Large-field-of-view (LFOV) eyepiece optical system |
| CN107783294A (en) * | 2016-08-31 | 2018-03-09 | 深圳超多维科技有限公司 | A kind of VR display devices and VR display devices |
| TWI627441B (en) * | 2016-11-18 | 2018-06-21 | 玉晶光電股份有限公司 | Ocular optical system |
| TWI633340B (en) * | 2017-10-13 | 2018-08-21 | 玉晶光電股份有限公司 | Ocular optical system |
| CN109196521A (en) * | 2018-08-21 | 2019-01-11 | 深圳市汇顶科技股份有限公司 | Lens system, fingerprint identification device and terminal device |
| CN109196521B (en) * | 2018-08-21 | 2022-04-05 | 深圳市汇顶科技股份有限公司 | Lens system, fingerprint identification device and terminal equipment |
| US11774708B2 (en) | 2018-08-21 | 2023-10-03 | Shenzhen GOODIX Technology Co., Ltd. | Lens system, fingerprint identification apparatus and terminal device |
| WO2023092421A1 (en) * | 2021-11-25 | 2023-06-01 | 京东方科技集团股份有限公司 | Optical system and vr display device |
| CN114236833A (en) * | 2021-11-30 | 2022-03-25 | 歌尔光学科技有限公司 | Optical system and head-mounted display equipment |
| CN114460747A (en) * | 2021-11-30 | 2022-05-10 | 歌尔光学科技有限公司 | Optical system and head-mounted display device |
| CN114460747B (en) * | 2021-11-30 | 2023-06-30 | 歌尔光学科技有限公司 | Optical system and head-mounted display device |
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