CN206020706U - A kind of free curved surface prism group and the nearly eye display device using which - Google Patents
A kind of free curved surface prism group and the nearly eye display device using which Download PDFInfo
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- CN206020706U CN206020706U CN201621037149.8U CN201621037149U CN206020706U CN 206020706 U CN206020706 U CN 206020706U CN 201621037149 U CN201621037149 U CN 201621037149U CN 206020706 U CN206020706 U CN 206020706U
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- Optical Elements Other Than Lenses (AREA)
Abstract
This utility model is related to a kind of free curved surface prism group with adaptive optical thread environment function and using its nearly eye display device, by arranging photochromatic layer on the compensator of prism group or adding photochromic material, make wearer enter strong ambient light when, the ambient light intensity of intake eyes adaptive can reduce, but the imaging light energy of projection lens is not affected, so as to obtain the display observing effect and Consumer's Experience of more preferable contrast.
Description
Technical field
This utility model be related to a kind of free curved surface prism group with adaptive optical thread environment function and using its
Nearly eye display device, when wearer is when strong light environment is entered, the ambient light intensity for entering eyes adaptive can reduce.
Background technology
The concept of virtual reality (virtual reality, VR) and augmented reality (augmented reality, AR) is carried
Since going out, significant progress is achieved based on the head-mounted type image display device of VR or AR patterns, occur in that consumption in recent years
The product of level, such as Samsung gear VR, Sony PSVR, Epson BT300, Microsoft Hololens etc., by
In these head-mounted display apparatus using when need to be worn on observer's head, therefore compact and lightweight is always in the industry
Unremitting pursuit, to mitigate the load of observer, improves workability.
In order to obtain slim and graceful weight, the optical element of free form surface is developed in order to realize VR or AR applications, freely
Curved surface can preferably control aberration and obtain more preferable picture due to increased more degree of freedom, when optical design is carried out
Matter, while can mitigate weight reduces volume.The subject matter of restricting current freeform optics is to process, detect and manufacture work
Problem in skill, with the progress and the aspect such as Diamond Cutting and injection mo(u)lding processing technique of face type expression method
Progress, the high accuracy processing of free curved surface prism have become possibility, for example, using the freedom of Shooting Technique manufacture PMMA materials
Curved surface prism, batch production can substantially reduce cost, with very high cost performance.In the said goods, for example, Epson
BT series employs free curved surface prism composition optical system, by realize true environment light the normal imaging of human eye and in terms of
Calculation machine produces the fusion of image, and the image that its Computer is generated is from micro display device.Bright due to micro display device
Degree is restricted by principle of luminosity and manufacturing process, if it is desired to realize the void produced with micro display device under strong light environment
Intend comfortable fusion of the image on human eye vision, it usually needs before ambient light is incident to opticses, through veil or
Person's optical filter, suitably to reduce the intensity of ambient light.The presence of veil or optical filter have impact on the design of product design certainly
The weight of system by spending, is also increased, the wear comfort of product is reduced.
Utility model content
This utility model aims to provide a kind of free curved surface prism group without the need for subsidiary brake sack, and the nearly eye using which
Display device, free curved surface prism group include image formation prism and compensator, by arranging photochromatic layer on compensator
Or add photochromic material, make compensating glass replace the effect of optical filter, and image formation prism is not affected to micro display device
The light-use of the image light of generation.
According to a kind of free curved surface prism group of the present utility model, including image formation prism and compensator, wherein, rib is imaged
Mirror and compensator are disposed adjacent, and image formation prism has consistent free-curved-surface-type with the adjacently situated surfaces of compensator, described
Compensator has photochromatic layer towards the outer surface of ambient light.
According to another kind of free curved surface prism group of the present utility model, including image formation prism and compensator, wherein, imaging
Prism and compensator are disposed adjacent, and image formation prism has consistent free-curved-surface-type, institute with the adjacently situated surfaces of compensator
State in compensator comprising photochromic dyeses.
Above-mentioned image formation prism can be integrally formed by glued bonding with compensator, or image formation prism and compensator
Between have predetermined space air-gap with separation property install.
Preferably, the material of image formation prism and compensator is optical resin.Side table in image formation prism and compensator
Also there is on face photochromatic layer.
Or, in light incident direction, the concentration distribution of the photochromic dyeses of the compensator is inversely proportional to the thickness.
The invention also discloses a kind of nearly eye display device using above-mentioned free curved surface prism group, further includes
Controller, micro display device and ambient light sensor, wherein, the ambient light sensor is connected to controller, in order to control
Device processed provides ambient light intensity information, and the controller controls the micro display device according to the ambient light intensity information
Brightness.
According to the free curved surface prism group without the need for subsidiary brake sack of the present utility model, making for extra optical filter is reduced
With when the nearly eye display device of augmented reality is used as, effectively reducing the impact of strong ambient light, while having no effect on miniature aobvious
Show effective light-use of the image light that device sends, improve the visual pattern fusion comfortableness under strong light environment.
Description of the drawings
Free curved surface prism group sectional views of the Fig. 1 (a) and Fig. 1 (b) for this utility model first embodiment.
Free curved surface prism group sectional views of the Fig. 2 for this utility model second embodiment.
Specific embodiment
Exemplary embodiment of the present is described in detail to explain the present invention below, its example is represented in accompanying drawing
In, wherein, identical label represents same parts all the time.Represent unless there are clear and definite, skilled artisan would appreciate that,
First, second grade vocabulary is only interpreted as distinguishing different parts, and does not include the limited effect of order, also, different
In embodiment, the modular construction of also referred to as Part I can also be differed.
According to one embodiment of the present invention, shown in such as Fig. 1 (a), free curved surface prism group includes that imaging is freely bent
Face prism 10 and compensation free curved surface prism 20.Each free curved surface prism includes at least 3 surfaces to surround volume morphing,
Wherein there are at least two optics active surfaces.Specifically in practice, the image light sent from micro display device 5 is passed through
4 transmission of the 3rd surface of free curved surface prism 10 is crossed, on the surface 2 of free curved surface prism 10, is totally reflected to recessed reflecting surface 3
On, surface 2 is passed through after reflecting through the surface 3 of free curved surface prism 10, through the pupil of exit pupil position 1 to observer；Surface 3 has
Part reflective semitransparent film, some light meeting direct losses, optical power losses 1/ when light incides the surface 3 of free curved surface prism 10
2, and ambient light is then incident with free curved surface prism 20 by compensation, passes in the part surrounded by optics active surface 6,7
Broadcast, then via surface 3 and the pupil for being directly transmitted into observer on surface 2.In order to avoid affecting image when ambient light is too strong
Displaying contrast for light, is provided with photochromatic layer in compensation free curved surface prism 20 on the surface 7 of ambient light.More enter
One step, imaging free curved surface prism 10 and the non-effective optical surface of compensation free curved surface prism 20, such as side surface,
Also there is photochromatic layer, to avoid impact of the strong ambient light to image light.
Used as a kind of alternative mode, compensation free curved surface prism 20 can adulterate when being formed photochromic material
Material, so as to wherein include photochromic dyeses, the mode of any of formation color-changing lens is used equally to make free form surface rib
Include photochromic dyeses in mirror 20, to reach darkening in strong illumination compensation free curved surface prism 20, to subtract
Few ambient light is incident to the intensity of observer's pupil.Preferred mode is, in light incident direction, in free curved surface prism 20
The concentration distribution of photochromic dyeses be inversely proportional to the thickness, i.e. for the free curved surface prism 20 as shown in Fig. 1 (a), light enters
Direction is penetrated for OX, thickness of the free curved surface prism 20 on top is little and the thickness of bottom is big, and the section in approximate wedge shape is wherein wrapped
The concentration of the photochromic dyeses for containing is high in the little moiety concentrations of thickness, such setting side low in the big moiety concentrations of thickness
Formula can be to make ambient light reach the intensity after same decay after different light paths distance with purpose, it is ensured that at observer
The uniformity of environment photoimaging.
Although as shown in Fig. 1 (a), imaging free curved surface prism 10 and compensation free curved surface prism 20 are by gluing
Bonding is arranged closely together, and surface 3 has a consistent free-curved-surface-type with 6, but in the same manner, as shown in Fig. 1 (b), into
Picture free curved surface prism 10 and compensation free curved surface prism 20 can also be separately installed, the middle thin sky with predetermined space
Air gap.
According to another embodiment of the invention, as shown in Fig. 2 free curved surface prism group includes imaging free form surface
Free curved surface prism 20A is used in prism 10A and compensation.Each free curved surface prism includes 4 surfaces to surround volume morphing, glued or
The discrete setting of person constitutes free curved surface prism group.Specifically in practice, the image light sent from micro display device 5 is passed through
The surface 1A transmissions that projection lens set 6 is incident to free curved surface prism 10A are crossed, 2A is totally reflected so as in free form surface on surface
Propagated with total reflection form forward in prism 10A, after the reflection via surface 3A, no longer meet total reflection condition, so as to from table
Face 1A is transmitted to observer's pupil.Identical with front kind of embodiment, there is on the 3A of surface part reflective semitransparent film, ambient light then to pass through
Compensation is incident with free curved surface prism 20A, through the pupil that surface 4A and 5A are transmitted into observer.In order to avoid ambient light mistake
Displaying contrast for image light is affected when strong, is provided with the surface 4A of ambient light in compensation free curved surface prism 20A
Photochromatic layer.Further, photochromatic layer is also equipped with free curved surface prism 10A towards the surface of environment.
Similar with previous embodiment, compensation free curved surface prism 20A formed when can with blended photochromic materials,
So as to wherein include photochromic dyeses, the mode of any of formation color-changing lens is used equally to make free curved surface prism 20
Interior comprising photochromic dyeses, to reach darkening in strong illumination compensation free curved surface prism 20A, to reduce ring
Border light is incident to the intensity of observer's pupil.Preferred mode is, the light in light incident direction, in free curved surface prism 20
The concentration distribution of chromotropic dye is caused to be inversely proportional to the thickness, i.e. for free curved surface prism 20A as shown in Figure 2, light incident direction
For OX, free curved surface prism 20A is smaller in the thickness of left part and the thickness of right part is bigger, the section in approximate wedge shape-rectangle, its
In the concentration of photochromic dyeses that includes high in the little moiety concentrations of thickness, low in the big moiety concentrations of thickness, such set
The mode of putting can be to make ambient light reach the intensity after same decay after different light paths distance with purpose, it is ensured that in observer
The uniformity of the environment photoimaging at place.
Known, photochromic (photochromism) refers to a compound under the photoirradiation for being subject to certain wavelength
There is the product that chemical reaction obtains another kind of color, and under the light irradiation of another wavelength or in the presence of heat, and can recover
Arrive original form.This compound that reversible color change can occur in the presence of light, referred to as photochromic dyeses.Can
It is a photochromic major criterion to meet reversible reaction, if the irreversible reaction occurred under light action, may also lead to
The change of color, but photochemical reaction is pertaining only to, not as the photochromic discussion in the present invention.There is photochromic material
The eyeglass of material is commonly referred to as color-changing lens.Generally, the photochromic material for adding in the color-changing lens of glass material is halogenation
Silver, the color-changing lens of resin material are then predominantly adding the chemical substances such as pyrrole volution.
There is photochromatic layer or include the color-changing lens of photochromic dyeses in the sun through ultraviolet and shortwave
Radiation of visible light, darkens, and light transmission rate reduces, and reduces the light of the light intensity filtration fraction wavelength for passing through, for example red
Outside line, ultraviolet or blue light.Indoors or eyeglass light transmission rate in dark place is improved, fade and recover lost eyesight.
Photochromic resin lens in resin material add photochromic dyeses and obtain, in special wave band
Under light radiation effect, the structure of these photochromic dyeses changes, and changes the light absorpting ability of material.With coating method
When being formed as photochromatic layer, photochromic material can typically be selected from spiral shell naphtho- oxazines or derivatives thereof or spiropyran；Light
Mutagens chromatograph can also be obtained with osmosis etc..When photochromic dyeses are scattered in eyeglass, diazo initiator can be adopted
The technique for replacing peroxide initiator, by one or more light selected from spiral shell type piperazine, spiral shell type pyran and chromene compound
Chromotropic dye is caused to carry out polymerisation in bulk in being directly incorporated into polymerized monomer.Or, using blending processing method, with acrylic
Thing or polystyrenic polymer are base material, add one or more photochromic materials, then add antioxidant, hindered amines
The additives such as light stabilizer, dispersant, coupling agent, through pelletize after uniform mixing, then injection mo(u)lding under high temperature, high pressure.
According to above-mentioned embodiment of the present utility model, each free curved surface prism can be formed with optical resin, weight is very
Make wherein comprising photochromic dyeses when gently, by arranging photochromatic layer or formation, it is achieved thereby that existing enhancing is used as
During the nearly eye display device of reality, without the impact that extra shade can effectively reduce strong ambient light, and not shadow
The luminous energy for ringing the image light that micro display device sends is utilized effectively, and the visual pattern fusion that improve under strong light environment is relaxed
Adaptive.Optionally, nearly eye display device can further include ambient light sensor, be connected to the control of nearly eye display device
To provide ambient light intensity information, controller controls the bright of the micro display device according to the ambient light intensity information to device
Degree, further lifts the comfortableness of visual pattern fusion.
Particular embodiments described above, has carried out entering one to the purpose of this utility model, technical scheme and beneficial effect
Step is described in detail, and should be understood that the above is not limited to protection domain of the present utility model, all new in this practicality
Within the spirit and principle of type, any modification, equivalent substitution and improvements that is done etc. should be included in protection of the present utility model
Within the scope of.
Claims (7)
1. a kind of free curved surface prism group, including image formation prism (10) and compensator (20), wherein, image formation prism and compensation rib
Mirror is disposed adjacent, and (3,6) with consistent free-curved-surface-type, its feature exists the adjacently situated surfaces of image formation prism and compensator
In the compensator has photochromatic layer towards the outer surface of ambient light.
2. free curved surface prism group as claimed in claim 1, it is characterised in that the side surface tool of the image formation prism and compensator
There is photochromatic layer.
3. a kind of free curved surface prism group, including image formation prism (10) and compensator (20), wherein, image formation prism and compensation rib
Mirror is disposed adjacent, and (3,6) with consistent free-curved-surface-type, its feature exists the adjacently situated surfaces of image formation prism and compensator
In comprising photochromic dyeses in the compensator.
4. the free curved surface prism group as described in claim 1 or 3, the image formation prism is with compensator by glued bonding structure
Integral, or there is the air-gap of predetermined space with separation property installation between image formation prism and compensator.
5. the free curved surface prism group as described in claim 1 or 3, it is characterised in that the material of the image formation prism and compensator
Expect for optical resin.
6. free curved surface prism group as claimed in claim 3, it is characterised in that in light incident direction, the compensator
The concentration distribution of photochromic dyeses is inversely proportional to the thickness.
7. a kind of nearly eye display device using the such as arbitrary free curved surface prism group of claim 1-6, further includes controller,
Micro display device and ambient light sensor, wherein,
The ambient light sensor is connected to controller, in order to provide ambient light intensity information, the controller root to controller
According to the brightness that the ambient light intensity information controls the micro display device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621037149.8U CN206020706U (en) | 2016-09-05 | 2016-09-05 | A kind of free curved surface prism group and the nearly eye display device using which |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621037149.8U CN206020706U (en) | 2016-09-05 | 2016-09-05 | A kind of free curved surface prism group and the nearly eye display device using which |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107300777A (en) * | 2017-08-18 | 2017-10-27 | 深圳惠牛科技有限公司 | A kind of imaging system reflected based on double free form surfaces |
| CN108681071A (en) * | 2018-06-28 | 2018-10-19 | 青岛小鸟看看科技有限公司 | A kind of display equipment optical system |
| CN109188691A (en) * | 2018-09-21 | 2019-01-11 | 歌尔科技有限公司 | A kind of optical system and VR equipment |
| CN110572632A (en) * | 2019-08-15 | 2019-12-13 | 中国人民解放军军事科学院国防科技创新研究院 | Augmented reality display system, helmet and method based on sight tracking |
| CN113671712A (en) * | 2021-08-27 | 2021-11-19 | 舒伟 | Foldable optical waveguide near-to-eye display device |
-
2016
- 2016-09-05 CN CN201621037149.8U patent/CN206020706U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107300777A (en) * | 2017-08-18 | 2017-10-27 | 深圳惠牛科技有限公司 | A kind of imaging system reflected based on double free form surfaces |
| CN108681071A (en) * | 2018-06-28 | 2018-10-19 | 青岛小鸟看看科技有限公司 | A kind of display equipment optical system |
| CN109188691A (en) * | 2018-09-21 | 2019-01-11 | 歌尔科技有限公司 | A kind of optical system and VR equipment |
| CN110572632A (en) * | 2019-08-15 | 2019-12-13 | 中国人民解放军军事科学院国防科技创新研究院 | Augmented reality display system, helmet and method based on sight tracking |
| CN113671712A (en) * | 2021-08-27 | 2021-11-19 | 舒伟 | Foldable optical waveguide near-to-eye display device |
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