CN110146982A - A kind of optical sensing devices - Google Patents
A kind of optical sensing devices Download PDFInfo
- Publication number
- CN110146982A CN110146982A CN201811633611.4A CN201811633611A CN110146982A CN 110146982 A CN110146982 A CN 110146982A CN 201811633611 A CN201811633611 A CN 201811633611A CN 110146982 A CN110146982 A CN 110146982A
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- Prior art keywords
- reflection unit
- transparent substrates
- light
- aspheric
- reflection
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- 230000003287 optical effect Effects 0.000 title claims abstract description 29
- 239000000758 substrate Substances 0.000 claims abstract description 63
- 239000013078 crystal Substances 0.000 claims abstract description 43
- 238000002834 transmittance Methods 0.000 claims abstract description 14
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 4
- 239000000853 adhesive Substances 0.000 claims abstract description 3
- 230000001070 adhesive effect Effects 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 claims description 3
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims description 3
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 3
- 229910052980 cadmium sulfide Inorganic materials 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 3
- 229910052711 selenium Inorganic materials 0.000 claims description 3
- 239000011669 selenium Substances 0.000 claims description 3
- 230000000644 propagated effect Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 238000003384 imaging method Methods 0.000 abstract description 3
- 210000001508 eye Anatomy 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 230000003190 augmentative effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009738 saturating Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 229910002370 SrTiO3 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000005252 bulbus oculi Anatomy 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 210000004276 hyalin Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- -1 silver halide Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
The present invention discloses a kind of optical sensing devices.The inclination of first reflection unit is fixed on inside the first end of transparent substrates, and corresponding with light source position；The inclination of second reflection unit is fixed on inside the second end of transparent substrates, and corresponding with observer's observation position；The inclination angle of first reflection unit and the inclination angle of the second reflection unit are equal, and the first reflecting surface of the first reflection unit and the second reflecting surface of the second reflection unit are oppositely arranged；For aspheric faceted crystal by adhesive bonding in the upper surface of the second end of transparent substrates, the refractive index of adhesive is less than the refractive index of transparent substrates；The light transmittance of aspheric faceted crystal is variable, and as the light transmittance that ambient light becomes strong aspheric faceted crystal becomes smaller.Present invention could apply in a large amount of imaging applications, to improve the clarity and anti-interference ability of image, the image for seeing observer is apparent.
Description
Technical field
The present invention relates to optical fields, more particularly to a kind of optical sensing devices.
Background technique
Since head-up display (HUD) began to use before more than 30 years, with regard to constantly obtaining new significant development.They are not
It is used only in most of modern combat aircrafts, and there are many proposals and design about HUD in automobile recently.It is aobvious in wear-type
Show in device (HMD), optical module had not only served as imaging len but also served as combiner, and wherein X-Y scheme image source is imaged onto infinite point
And it is reflected in the eyes of observer.However, traditional HUD system or HMD system has some significant ground disadvantages.They
A display source is required, which must deviate the quite remote distance of combiner, and the overall volume of system is caused to become ten
Point huge, this makes installation inconvenience even with dangerous.With the increase of the expectation visual field (FOV) of system, this routine
Optical module become heavier.
Previous in technology, developer is in order to make system become more compact, while for the expectation visual field of system
(FOV) bigger, a kind of substrate-guided optical device based on hyaline layer is proposed, film coating or anisotropic material are used
The light coupling that manufactured partially reflecting surface array transmits out optical waveguide is into observer's eye, but developer is considering system
An important problem is had ignored when system, in head-up display (HUD) or head-mounted display (HMD), is especially applied
In some equipment required for augmented reality (AR), the light that the image that observer's eyes are seen not only is issued with display source has
It closes, equally related with the intensity of the light of external environment, two kinds of light collective effects could allow observer to see suitable image.
The variation of weather and external environment light change, if the image projected in observer's eyes does not change and then simultaneously,
The image that observer sees can become unintelligible, influence the application effect in actual environment.
Summary of the invention
It the object of the present invention is to provide a kind of optical sensing devices, can be applied in a large amount of imaging applications, such as head
Wear formula and head-up display, in especially some augmented reality (AR) equipment, with improve image clarity and anti-interference energy
Power, the image for seeing observer are apparent.
To achieve the above object, the present invention provides following schemes:
A kind of optical sensing devices, comprising: transparent substrates, the first reflection unit, the second reflection unit and aspheric faceted crystal；
First reflection unit and second reflection unit are both secured to inside the transparent substrates；Described first is anti-
Injection device inclination is fixed on inside the first end of the transparent substrates, and corresponding with light source position；Second reflection unit inclines
It is tiltedly fixed on inside the second end of the transparent substrates, and corresponding with observer's observation position；First reflection unit inclines
The inclination angle of oblique angle and second reflection unit is equal, and the first reflecting surface of first reflection unit and described second is instead
Second reflecting surface of injection device is oppositely arranged；
The aspheric faceted crystal passes through the upper surface of second end of the adhesive bonding in the transparent substrates, the bonding
The refractive index of agent is less than the refractive index of the transparent substrates；The light transmittance of the aspheric faceted crystal is variable, and with ambient light
The light transmittance for becoming the strong aspheric faceted crystal becomes smaller；
The light beam that the light source issues enters the transparent substrates with the direction of the lower surface perpendicular to the transparent substrates
Inside is propagated after the first reflective surface of first reflection unit inside the transparent substrates with total reflection mode
To second reflection unit the second reflecting surface, by second reflecting surface refraction, the aspheric faceted crystal transmission at
The first light beam and by first reflective surface formed the second light beam coupling after be incident to observer's observation position.
Optionally, the first reflecting surface of first reflection unit is coated with reflectance coating；By first reflective surface
Incidence angle of light when being incident to the lower surface of the transparent substrates be greater than the critical angles of the transparent substrates.
Optionally, the line at the center at the first reflecting surface center and light source of first reflection unit and described
The lower surface of photopolymer substrate is vertical.
Optionally, the number of second reflection unit is multiple, and multiple second reflection units form the second reflection
Apparatus array, multiple second reflection units are parallel and equidistant tilt is fixed in the second end of the transparent substrates
Portion.
Optionally, the line and institute at the center of the second reflection unit array and the center of observer's observation position
The lower surface for stating transparent substrates is vertical.
Optionally, semi-transparent semi-reflecting film is coated on the second reflecting surface of second reflection unit.
Optionally, the aspheric faceted crystal is piano convex cylindrical crystal.
Optionally, the bottom surface of the aspheric faceted crystal and the upper surface of the transparent substrates bond, the aspheric faceted crystal
Aspherical upper be coated with photosensitive material.
Optionally, the photosensitive material includes that organic photo conductor drum, amorphous silicon photosensitive drums, cadmium sulfide photosensitive drums and selenium are photosensitive
Drum.
The specific embodiment provided according to the present invention, the invention discloses following technical effects:
In the prior art, substrate-guided optical device is applied in the augmented realities equipment such as head-mounted display, makes
The image information that user sees is the light issued by display source and external environment light collective effect and is formed.Existing skill
Optical device used in art will will receive the interference of ambient, and some parameters such as clarity, contrast of image will
It changes with the power of ambient, the image for seeing observer becomes unintelligible.The application, which uses, can change light transmission
The aspheric faceted crystal of rate, when ambient is stronger, the light transmittance of crystal is smaller, is equivalent to and neutralizes extraneous strong light；Ambient light
When line is weaker, the light transmittance of crystal is larger, is equivalent to the extraneous dim light of enhancing.Therefore, this technology has very strong environment to adapt to energy
Power, the range used is more extensive, while enhancing the anti-interference ability of system, has good use value.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of optical sensing devices of the present invention.
The corresponding element of figure label are as follows: 1- transparent substrates, the upper surface of 2- transparent substrates, the following table of 3- transparent substrates
Face, the first reflection unit of 4-, the second reflection unit of 5-, 6- aspheric faceted crystal, the photosensitive material coated on 7- aspheric faceted crystal, 8-
The bottom surface of aspheric faceted crystal, the observation position of 9- observer.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Basic conception of the invention is: the information such as the clarity for the image for seeing observer by optical waveguide and color
It is the light emitted by display source and the coefficient result of ambient.Using the variable aspheric faceted crystal of light transmittance and newly
The combination of type photosensitive material, changes the light transmittance of aspheric faceted crystal while sensing external environment changes, and then makes to inject and observe
The image that light intensity in person's eyes can allow observer to see is more clear.
Fig. 1 is the structural schematic diagram of optical sensing devices of the present invention.As shown in Figure 1, the optical sensing devices include:
Photopolymer substrate 1, the first reflection unit 4, the second reflection unit 5 and aspheric faceted crystal 6.
The upper surface 2 of the transparent substrates 1 with lower surface 3 be it is parallel, light beam passes through total reflection in transparent substrates 1
Form transmits light wave.
First reflection unit 4 and second reflection unit 5 are both secured to inside the transparent substrates 1；Described
The inclination of one reflection unit 4 is fixed on inside the first end of the transparent substrates 1, and corresponding with light source position, the first reflection in figure
Device 4 is fixed on the right end of transparent substrates 1.It is coated with reflectance coating on first reflecting surface of first reflection unit 4, meets light
Reflection theorem, the angle between first reflecting surface and the lower surface of transparent substrates 1 determines according to actual conditions, as long as make through
It crosses the incidence angle when light of first reflective surface is incident to the lower surface of the transparent substrates 1 and is greater than the light transmission base
The critical angle of plate 1 propagates to forward the second reflection unit 5 to make light in the form being totally reflected.First reflection
First reflecting surface center of device 4 and the center of light source (generally picture, such as OLED, Lcos) on same vertical line, and
The line of the two is vertical with the lower surface of the transparent substrates 1.
Second reflection unit 5 inclination is fixed on inside the second end of the transparent substrates 1, and with observer's observation bit
It sets 9 to correspond to, the second reflection unit 5 is fixed on the left end of transparent substrates 1 in figure；The inclination angle of first reflection unit 4 and institute
The inclination angle for stating the second reflection unit 5 is equal, and the first reflecting surface of first reflection unit 4 and second reflection unit
5 the second reflecting surface is oppositely arranged, so that the light after the reflection of the first reflection unit 4 can reach the second reflection dress
Set 5 the second reflecting surface.Semi-transparent semi-reflecting film is coated on second reflecting surface of second reflection unit 5.The second reflection dress
The number for setting 5 is multiple, second reflection unit array of multiple formation of second reflection units 5, and multiple second reflection units are flat
Row and at equal intervals inclination are fixed on inside the second end of the transparent substrates 1, and multiple second reflectings surface will pass through total internal reflection
The light wave of capture is coupled out transparent substrates 1 by output surface.The center of the second reflection unit array and the observer
The line at the center of observation position 9 is vertical with the lower surface of the transparent substrates 1.
The aspheric faceted crystal 6 by adhesive bonding in the upper surface 2 of the second end of the transparent substrates 1, it is described
The refractive index of adhesive is less than the refractive index of the transparent substrates 1；The light transmittance of the aspheric faceted crystal 6 is variable, and with ring
The light transmittance that border light becomes the strong aspheric faceted crystal becomes smaller.Specifically, the aspheric faceted crystal 6 can be brilliant for piano convex cylindrical
The upper surface 2 of body, aspherical brilliant 6 bottom surface and the transparent substrates 1 bonds, the aspheric faceted crystal 6 it is aspherical on
Coated with photosensitive material, light-sensitive surface, the variation for the light intensity and light intensity for experiencing external environment that light-sensitive surface can be sharp are formed.Institute
Stating photosensitive material includes organic photo conductor drum, amorphous silicon photosensitive drums, cadmium sulfide photosensitive drums and selenium photosensitive drums etc..The aspherical crystalline substance
The light penetration of the material of body 6 be it is variable, can according to light-sensitive surface 7 variation change light transmitance, it is saturating when light is strong
Light rate is small, and light transmittance is big when light is weak.For example, the material of the aspheric faceted crystal 6 can be AgX (silver halide), SrTiO3 (titanium
Sour strontium) etc..
The light beam that the light source issues enters the light transmission base with the direction of the lower surface 3 perpendicular to the transparent substrates 1
Inside plate 1, with total reflection side inside the transparent substrates 1 after the first reflective surface of first reflection unit 4
Formula propagates to the second reflecting surface of second reflection unit 5, by second reflecting surface refraction, the aspheric faceted crystal 6
It transmits the first light beam formed and is incident to observer after the second light beam coupling that second reflective surface is formed and see
Location sets 9.
The working process of this embodiment is as follows: the light from display source is by collimation lens collimation (display source and collimation lens
It is not drawn into front of Optical devices), light after collimation enters the first reflecting surface by input surface, and light passes through anti-in complete
It penetrates and is trapped in transparent substrates 1.After leaving the first reflecting surface after several secondary reflections, captured light wave reaches second
Light is coupled to from observer's observation position 9 from substrate by output surface, into the eye of observer by reflection unit array 5
In eyeball.Here, the input surface of optical device is defined as inputting that surface that light wave enters substrate by it, and its
Output surface is defined as captured light wave and passes through its that surface for leaving substrate.Aspherical (piano convex cylindrical) crystal 6
Surface is coated with the one layer of light-sensitive surface 7 of new photosensitive material that can experience ambient power, when ambient changes from weak to strong, sense
Light film 7 can perceive this variation, so that crystal 6 be made to change the transmitance of light, light changes from weak to strong, and crystal is saturating
The rate of mistake becomes smaller, and the composograph for preventing ambient too strong and observing human eye becomes sharply, to be equivalent to and neutralize the strong of the external world
Light improves the readability of image, and the image for seeing observer is more comfortable；Similarly, when line is crossed by dying down by force by the external world, sense
Light film 7 will increase the light transmittance of crystal 6 after perceiving variation, enter more light in human eye by crystal, to allow conjunction
Higher at the quality of image, image seen by person is more comfortable.
The present invention devises a kind of novel aspherical crystal optics sensing device of intelligence.There are two main surface (upper tables for tool
Face and lower surface) and edge transparent substrates, for passing through from throwing the incoming reflecting surface optically coupling on substrate at a distance
Light, which finally passes through multiple portions reflecting surface and couples light out from substrate, after multiple reflections is reflected into the glasses of observer.Light transmission
Variable aspherical (piano convex cylindrical) crystal of rate, surface are coated with light-sensitive surface, can be changed to change according to external environment light power and penetrated
Enter the natural light in human eye number, the present invention have good environmental suitability, can be applied to a variety of occasions, moreover, being
The anti-interference ability of system is stronger, and the image that observer sees is more clear, and more comfortably, the quality of image is higher.Be using
A kind of property Optical devices well.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (9)
1. a kind of optical sensing devices characterized by comprising transparent substrates, the first reflection unit, the second reflection unit and non-
Spherical surface crystal；
First reflection unit and second reflection unit are both secured to inside the transparent substrates；The first reflection dress
It sets inclination to be fixed on inside the first end of the transparent substrates, and corresponding with light source position；The second reflection unit inclination is solid
Inside the second end of the transparent substrates, and it is corresponding with observer's observation position；The inclination angle of first reflection unit
It is equal with the inclination angle of second reflection unit, and the first reflecting surface of first reflection unit and second reflection fill
The second reflecting surface set is oppositely arranged；
The aspheric faceted crystal passes through the upper surface of second end of the adhesive bonding in the transparent substrates, described adhesive
Refractive index is less than the refractive index of the transparent substrates；The light transmittance of the aspheric faceted crystal is variable, and as ambient light becomes strong
The light transmittance of the aspheric faceted crystal becomes smaller；
The light beam that the light source issues is entered inside the transparent substrates with the direction of the lower surface perpendicular to the transparent substrates,
Institute is propagated to total reflection mode inside the transparent substrates after the first reflective surface of first reflection unit
The second reflecting surface for stating the second reflection unit, by second reflecting surface refraction, the aspheric faceted crystal transmission at the
One light beam and by first reflective surface formed the second light beam coupling after be incident to observer's observation position.
2. optical sensing devices according to claim 1, which is characterized in that the first reflecting surface of first reflection unit
It is coated with reflectance coating；Incidence angle when being incident to the lower surface of the transparent substrates by the light of first reflective surface is big
In the critical angle of the transparent substrates.
3. -2 described in any item optical sensing devices according to claim 1, which is characterized in that the of first reflection unit
One reflecting surface center is vertical with the lower surface of the transparent substrates with the line at the center of the light source.
4. optical sensing devices according to claim 1, which is characterized in that the number of second reflection unit is more
A, multiple second reflection units form the second reflection unit array, and multiple second reflection units are parallel and equidistant
Inclination be fixed on inside the second end of the transparent substrates.
5. optical sensing devices according to claim 4, which is characterized in that the center of the second reflection unit array with
The line at the center of observer's observation position is vertical with the lower surface of the transparent substrates.
6. according to claim 1,4 and 5 described in any item optical sensing devices, which is characterized in that second reflection unit
The second reflecting surface on be coated with semi-transparent semi-reflecting film.
7. optical sensing devices according to claim 1, which is characterized in that the aspheric faceted crystal is that piano convex cylindrical is brilliant
Body.
8. optical sensing devices according to claim 1, which is characterized in that the bottom surface of the aspheric faceted crystal and described
The upper surface of photopolymer substrate bonds, and the aspherical of the aspheric faceted crystal is above coated with photosensitive material.
9. optical sensing devices according to claim 8, which is characterized in that the photosensitive material include organic photo conductor drum,
Amorphous silicon photosensitive drums, cadmium sulfide photosensitive drums and selenium photosensitive drums.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811633611.4A CN110146982A (en) | 2018-12-29 | 2018-12-29 | A kind of optical sensing devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811633611.4A CN110146982A (en) | 2018-12-29 | 2018-12-29 | A kind of optical sensing devices |
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| Publication Number | Publication Date |
|---|---|
| CN110146982A true CN110146982A (en) | 2019-08-20 |
Family
ID=67589346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811633611.4A Pending CN110146982A (en) | 2018-12-29 | 2018-12-29 | A kind of optical sensing devices |
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| Country | Link |
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| CN (1) | CN110146982A (en) |
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