CN106338821B - A kind of micro display eyepiece and helmet - Google Patents
A kind of micro display eyepiece and helmet Download PDFInfo
- Publication number
- CN106338821B CN106338821B CN201610834705.2A CN201610834705A CN106338821B CN 106338821 B CN106338821 B CN 106338821B CN 201610834705 A CN201610834705 A CN 201610834705A CN 106338821 B CN106338821 B CN 106338821B
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- China
- Prior art keywords
- micro display
- positive lens
- display eyepiece
- diffraction surfaces
- positive
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B25/00—Eyepieces; Magnifying glasses
- G02B25/001—Eyepieces
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B25/00—Eyepieces; Magnifying glasses
- G02B25/04—Eyepieces; Magnifying glasses affording a wide-angle view, e.g. through a spy-hole
-
- 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
- G02B27/0101—Head-up displays characterised by optical features
-
- 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
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
-
- 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
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0123—Head-up displays characterised by optical features comprising devices increasing the field of view
Abstract
The invention discloses a kind of micro display eyepiece and helmets.The micro display eyepiece includes two positive lens, the first positive lens and the second positive lens are set gradually against light incident direction, second surface and third surface are the diffraction surfaces with positive light coke, focal power is mutually compensated for by diffraction surfaces and plane of refraction, the luminescent screen of micro display eyepiece is made to realize 80 ° of field angle in the case of 1 inch；, can be with the aberration of effective compensation system since diffraction surfaces have positive dispersion under positive light coke state, and diffraction surfaces not will produce the curvature of field, so as to further increase the image quality of peripheral field；Reduce volume using the lens of plastic material easy to process simultaneously.The technical program provide micro display eyepiece and helmet disclosure satisfy that lightweight, miniaturization, low cost and big visual field the market demand.
Description
Present patent application be the applying date be on November 28th, 2014, application No. is 201410713899.1, it is entitled
The divisional application of the Chinese invention patent application of " a kind of micro display eyepiece and helmet ".
Technical field
The present invention relates to optical technical field, more particularly to a kind of micro display eyepiece and helmet.
Background technology
Micro display (i.e. small screen) helmet because of small, at low cost, the light-weighted advantage of its screen size on the market
It is very popular.
Image height and field angle meet relational expression h=ftan (θ) in micro display system, and wherein h is screen half height, and f is light
System focal length is learned, θ is angle of half field-of view.If micro display system provides larger field angle, i.e., the h in formula gets the small value and θ
Under the requirement that need to be taken large values, the value of focal length f will very little.In the case where the bore of optical system is certain, the focal length f of system
Smaller, diopter is stronger.This just needs multigroup eyeglass to share focal power to be avoided causing huge aberrations by diopter is excessive.But
It is the requirement that lightweight, miniaturization are run counter to using the optical system of multigroup eyeglass；And in traditional optical system, color is corrected
Difference needs positive and negative lens combination, and the focal power burden of positive lens can be increased by introducing negative lens then, influence image quality, so passing
The design of system is difficult to provide larger field angle, and enough feeling of immersion can not be brought to user, it is difficult to it is micro- aobvious to meet big visual field
Show the requirement of helmet system.
Invention content
It, can not be in lightweight, small-sized to solve existing eyepiece the present invention provides a kind of micro display eyepiece and helmet
The problem of big visual field being realized under the requirement of change.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
On the one hand, the present invention provides a kind of micro display eyepiece, including the first positive lens and the second positive lens, described first
Positive lens and the second positive lens are set gradually against the direction of light incidence, and first positive lens and second positive lens are equal
For plastic material；
First positive lens has the first surface towards image space and the second surface towards object space；
Second positive lens has the third surface towards image space and the 4th surface towards object space；
The wherein described second surface and the third surface are the diffraction surfaces with positive light coke, the first surface and institute
It is aspherical to state the 4th surface.
On the other hand, the present invention provides a kind of helmet, the helmet is provided using above-mentioned technical proposal
Micro display eyepiece.
The micro display eyepiece and helmet that the technical program provides use double positive lens structures, and in two positive lens
At least one surface on setting with positive light coke diffraction surfaces, mutually compensate for focal power by diffraction surfaces and plane of refraction, make
The luminescent screen of micro display eyepiece realizes 80 ° of field angle in the case of 1 inch；Since diffraction surfaces are under positive light coke state
With positive dispersion, it is capable of the aberration of effective compensation system, and hardly generates any curvature of field, therefore micro display eyepiece
The image quality of peripheral field significantly improve；By the way that two diffraction surfaces are arranged come the focal power needed for sharing system, and point
The centre position for making two diffraction surfaces be located at optical system in second surface and third surface is not set, it is convenient in production process
The face type of middle protection diffraction surfaces；Plastic material easy to process may be used in the lens in the present embodiment simultaneously, further decreases
The volume of system, so that micro display eyepiece and helmet disclosure satisfy that lightweight, miniaturization, big visual field, inexpensive market
Demand.
Description of the drawings
Fig. 1 is the structural schematic diagram of micro display eyepiece provided in an embodiment of the present invention；
Fig. 2 is the curvature of field and distortion aberration curve synoptic diagram of micro display eyepiece provided in an embodiment of the present invention；
Fig. 3 is the point range figure of micro display eyepiece provided in an embodiment of the present invention；
Fig. 4 is a kind of point range figure for the micro display eyepiece not correcting ratio chromatism,；
Fig. 5 is the optical transfer function curve synoptic diagram of micro display eyepiece provided in an embodiment of the present invention；
Fig. 6 is the ratio chromatism, schematic diagram of micro display eyepiece provided in an embodiment of the present invention；
Fig. 7 is a kind of ratio chromatism, schematic diagram of the micro display eyepiece of non-color correction difference.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is the structural schematic diagram of micro display eyepiece provided in an embodiment of the present invention, and this system is to roll over hybrid optical of spreading out
System.
The micro display eyepiece includes the first positive lens 1 and the second positive lens 2, the first positive lens 1 and the second positive lens 2 against
The direction of light incidence is set gradually, wherein the diaphragm 3 of micro display eyepiece as pupil of human, and first with the first positive lens 1
The distance on surface 11 is 10mm, wherein：
First positive lens 1 has the first surface 11 towards image space and the second surface towards object space 12；
Second positive lens 2 has the third surface 21 towards image space and the 4th surface 22 towards object space；
And an at least surface is arranged in the first surface 11, second surface 12, third surface 21, the 4th surface 22
Diffraction surfaces with positive light coke.
In a preferred embodiment, the first surface 11 of the first positive lens 1 is convex to image space, the middle position of second surface 12
It is convex to object space, and second surface 12 is diffraction surfaces；
The third surface 21 of second positive lens 2 is convex to image space, and the middle position on the 4th surface 22 is convex to object space, and third table
Face 21 is diffraction surfaces.
This preferred embodiment is separately positioned on the by the way that two diffraction surfaces are arranged come the focal power needed for sharing system
Two surfaces and third surface make two diffraction surfaces be located at the centre position of optical system, convenient to protect diffraction in process of production
The face type in face.
It is further preferred that the face type of second surface 12 and the diffraction surfaces on third surface 21 is designed to identical.Two faces
The identical diffraction surfaces of type can reduce mold processing charges, save cost.
It is further preferred that first surface 11 and the 4th surface 22 are designed as it is aspherical, it is multiple with the processing for reducing system
Miscellaneous degree.
It is further preferred that the upper and lower end face of the first positive lens 1 and the second positive lens 2 is designed as plane, facilitate adjusting
The alignment error of lens.
In another embodiment, the first positive lens 1 is plastic material, and ranges of indices of refraction is 1.45 < n1< 1.70, color
Dissipate ranging from 50 < v1< 75；Second positive lens 2 is plastic material, and ranges of indices of refraction is 1.45 < n1< 1.70, dispersion range
For 50 < v1The lens shape of < 75, plastic material are easy to process, keep system lighter.
Fig. 2 is the curvature of field and distortion aberration curve synoptic diagram of micro display eyepiece provided in an embodiment of the present invention, the present embodiment
In two positive lens be respectively PMMA models plastic material, refractive index n1=1.531160, dispersion v1=56.04；
Left figure is the curvature of field curve synoptic diagram of micro display eyepiece, and the t lines in figure are meridianal curvature of field, and s lines are Sagittal field curvature, meridianal curvature of field and
The difference of Sagittal field curvature is the astigmatism of system, and the curvature of field and astigmatic influence the aberration of the outer field rays of system axle, and it is tight that difference crosses conference
The image quality for influencing system off-axis ray of weight.From left figure as can be seen that the curvature of field of this system and astigmatism are corrected to
In very low range；Right figure is micro display eyepiece distortion aberration curve synoptic diagram, and distortion does not interfere with the clarity of system, can only draw
System anamorphose is played, but distorts to be handled by later image and solve, from right figure as can be seen that the distortion of this system is in reasonable model
In enclosing, therefore, diffraction surfaces provided in an embodiment of the present invention can not only provide the positive dispersion under positive light coke state, and not
The curvature of field and the distortion that can influence micro display eyepiece, significantly increase the image quality of peripheral field.
Micro display eyepiece in the present embodiment corrects ratio chromatism, so as to obtain good image quality, such as Fig. 3 institutes
Show, be the point range figure of micro display eyepiece provided in an embodiment of the present invention, each field rays that system is shown in point range figure exist
The disc of confusion for converging and being formed at image planes, the system of characterizing obtain the characteristic of various differences, and the RMS RADIUS in point range figure are (
Root radius) smaller proof system image quality it is better.Three kinds of greyscale colors respectively represent the light of three kinds of wave bands in Fig. 3,
The disc of confusion of three kinds of greyscale colors divides bigger more the aberration for the system of making out a certificate；Fig. 4 is the micro display mesh for not correcting ratio chromatism,
The point range figure of mirror, dispersion phenomenon is apparent in figure, comparison diagram 3 and Fig. 4 it is found that micro display eyepiece provided in an embodiment of the present invention color
Difference has obtained good correction.
Fig. 5 is the ratio chromatism, schematic diagram of micro display eyepiece provided in an embodiment of the present invention, and the horizontal axis in figure indicates aberration,
The longitudinal axis is field angle, and curve more deviates vertical axis tilt and represents ratio chromatism, as visual field increases and transmission variation；Fig. 6 be it is a kind of not
The ratio chromatism, schematic diagram of the micro display eyepiece of color correction difference, comparison diagram 5 and Fig. 6, it can be seen that (system provided by the invention in Fig. 5
System) value of chromatism of characterization is much smaller than the value of chromatism of Fig. 6 (system of non-correcting chromatic aberration), and comprehensive and Fig. 2-Fig. 6 can be seen that the present invention
The aberration for the micro display eyepiece that embodiment provides has obtained good correction.
Fig. 7 is the optical transfer function curve synoptic diagram of micro display eyepiece provided in an embodiment of the present invention, horizontal axis generation in figure
To the radius size position at edge, it is optical center that the left side, which is zero, in the telogenesis image plane center of circle, and rightmost is at image field radius edge,
Dimensional units are millimeters, and the longitudinal axis represents the percentage that imaging quality reaches situation in kind, and from 0 to 1, optical transfer function MTF can
With the image quality of concentrated expression system, the more smooth and opposite horizontal axis height of curve shape is higher (i.e. closer to 1), system
Image quality it is better；MTF that the micro display eyepiece of the present embodiment is obtained in 0 °~40 ° field angles is provided in Fig. 7 (with this implementation
The micro display eyepiece of example is mutually symmetrical in the MTF curve of 0 °~-40 ° field angles) it is ideal, it can be seen that the aberration of this system
Obtain good correction.
The micro display eyepiece that above-mentioned technical proposal provides includes two positive lens, is disposed with against light incident direction
First positive lens and the second positive lens；Using double positive lens structures, being at least arranged on a surface of two positive lens has
The diffraction surfaces of positive light coke mutually compensate for focal power by diffraction surfaces and plane of refraction, make the luminescent screen of micro display eyepiece in 1 English
80 ° of field angle is realized in the case of very little；Since diffraction surfaces have positive dispersion under positive light coke state, can effectively mend
The aberration of system is repaid, and hardly generates any curvature of field, therefore the image quality of the peripheral field of system significantly improves；Together
When the present embodiment in lens use plastic material easy to process, the volume of system is further decreased, so that micro display eyepiece
Meet lightweight, miniaturization, big visual field the market demand.
Another embodiment of the present invention provides a kind of helmet, the micro display mesh provided using above-mentioned technical proposal
Mirror.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (7)
1. a kind of micro display eyepiece, which is characterized in that including the first positive lens and the second positive lens, first positive lens and
Two positive lens are set gradually against the direction of light incidence, and first positive lens and second positive lens are plastics material
Matter；
First positive lens has the first surface towards image space and the second surface towards object space；
Second positive lens has the third surface towards image space and the 4th surface towards object space；
Wherein, the second surface and the third surface are the diffraction surfaces with positive light coke, the first surface and described
4th surface is aspherical；
The first surface of first positive lens is convex to image space, and the middle position of second surface is convex to object space；
The third surface of second positive lens is convex to image space, and the middle position on the 4th surface is convex to object space.
2. micro display eyepiece according to claim 1, which is characterized in that the diffraction surfaces of the second surface and the third
The face type of the diffraction surfaces on surface is identical.
3. micro display eyepiece according to claim 1, which is characterized in that first positive lens and second positive lens
Upper and lower end face be plane.
4. micro display eyepiece according to claim 1, which is characterized in that
The ranges of indices of refraction of first positive lens is 1.45 < n1< 1.70, dispersion range are 50 < v1< 75；
Second positive lens is that ranges of indices of refraction is 1.45 < n2< 1.75, dispersion range are 25 < v2< 40.
5. according to claim 1-4 any one of them micro display eyepieces, which is characterized in that the luminescent screen of the micro display eyepiece
The size of curtain is less than 1 inch.
6. micro display eyepiece according to claim 5, which is characterized in that the diaphragm behaviour eye pupil of the micro display eyepiece
It is 10mm at a distance from hole, with the first surface.
7. a kind of helmet, which is characterized in that the helmet includes micro display as claimed in any one of claims 1 to 6
Eyepiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610834705.2A CN106338821B (en) | 2014-11-28 | 2014-11-28 | A kind of micro display eyepiece and helmet |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410713899.1A CN104503076B (en) | 2014-11-28 | 2014-11-28 | Micro display eyepiece and head-mounted equipment |
| CN201610834705.2A CN106338821B (en) | 2014-11-28 | 2014-11-28 | A kind of micro display eyepiece and helmet |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410713899.1A Division CN104503076B (en) | 2014-11-28 | 2014-11-28 | Micro display eyepiece and head-mounted equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106338821A CN106338821A (en) | 2017-01-18 |
| CN106338821B true CN106338821B (en) | 2018-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610834705.2A Active CN106338821B (en) | 2014-11-28 | 2014-11-28 | A kind of micro display eyepiece and helmet |
| CN201410713899.1A Active CN104503076B (en) | 2014-11-28 | 2014-11-28 | Micro display eyepiece and head-mounted equipment |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410713899.1A Active CN104503076B (en) | 2014-11-28 | 2014-11-28 | Micro display eyepiece and head-mounted equipment |
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| CN (2) | CN106338821B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104898267A (en) * | 2015-03-27 | 2015-09-09 | 上海理鑫光学科技有限公司 | Eyepiece with expanded field angle |
| 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 |
| CN106199972A (en) * | 2016-09-06 | 2016-12-07 | 东莞市美光达光学科技有限公司 | A kind of for observing the wear-type optical system that large scale screen 3D shows |
| CN106501928A (en) * | 2016-11-15 | 2017-03-15 | 上海乐蜗信息科技有限公司 | A kind of optical system |
| CN106773010B (en) * | 2016-11-28 | 2023-09-15 | 歌尔光学科技有限公司 | 2P structure lens, head-mounted display optical system and head-mounted equipment |
| CN106842518B (en) * | 2017-03-03 | 2022-06-17 | 东莞市宇光光电科技有限公司 | Endoscopic image pickup objective optical system |
| CN107608079A (en) * | 2017-10-24 | 2018-01-19 | 歌尔科技有限公司 | Wear display device |
| CN112180603B (en) * | 2020-09-30 | 2023-05-19 | 维沃移动通信有限公司 | Projection device and intelligent glasses |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2795884Y (en) * | 2003-11-21 | 2006-07-12 | 中国科学院长春光学精密机械与物理研究所 | Micro display eyepiece optic imaging device |
| WO2008101560A1 (en) * | 2007-01-19 | 2008-08-28 | Renault S.A.S. | System for orientating a recirculated combustion gas flow |
| CN101896848A (en) * | 2007-12-20 | 2010-11-24 | 株式会社尼康 | Eyepiece system and optical device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002033700A2 (en) * | 2000-10-16 | 2002-04-25 | Konica Corporation | Objective lens, coupling lens, light converging optical system, and optical pick-up apparatus |
| TWI406007B (en) * | 2006-07-20 | 2013-08-21 | 尼康股份有限公司 | Optical system and eyepiece |
| CN204314543U (en) * | 2014-11-28 | 2015-05-06 | 青岛歌尔声学科技有限公司 | A kind of micro-display eyepiece and helmet |
-
2014
- 2014-11-28 CN CN201610834705.2A patent/CN106338821B/en active Active
- 2014-11-28 CN CN201410713899.1A patent/CN104503076B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2795884Y (en) * | 2003-11-21 | 2006-07-12 | 中国科学院长春光学精密机械与物理研究所 | Micro display eyepiece optic imaging device |
| WO2008101560A1 (en) * | 2007-01-19 | 2008-08-28 | Renault S.A.S. | System for orientating a recirculated combustion gas flow |
| CN101896848A (en) * | 2007-12-20 | 2010-11-24 | 株式会社尼康 | Eyepiece system and optical device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106338821A (en) | 2017-01-18 |
| CN104503076A (en) | 2015-04-08 |
| CN104503076B (en) | 2017-02-08 |
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