CN107290851A - Optical device - Google Patents

Abstract

A kind of optical device is disclosed, including：Display unit；Lens, are configured as the image that transmission is transmitted and formed by the display unit；Substrate, is configured as being contained in the lens in the substrate；And adjustment unit, it is configured as moving the lens relative to the substrate, to adjust the path of the light through the lens.Using embodiment of the disclosure, optical device can be easily adjusted through the path of the light of lens, so as to optimize the path of light.

Description

Optical device

Technical field

Embodiment is related to a kind of optical device.

Background technology

Content described in this part only provides the background information on embodiment, and does not constitute prior art.

Optical device, such as head mounted display (Head-mounted Display, HMD), are to be set It is calculated as allowing pilot to know setting for flight information (flight information including the height and speed of such as aircraft) It is standby.General commercial product has been invented in nineteen nineties, production has been commercialized since 1997 Product have been obtained for great concern.

Optical device is the equipment being worn on the head, such as a pair of glasses so that formed in front of eyes of user Enlarged drawing so as to allow user watch image.The display used in an optical device generally has 1 English Very little or smaller size, but by applying high optics technology, user can be watched close to original chi Very little 100 times of amplification screen.

Due to the technology development and commercialization of ancillary equipment (such as optical device), wearable computing industry It is expected to be developed.Although current optical devices are primarily to enjoy film or game and develop, Due to the superior performance and reduced size of computer system, and because display device is (by LCD and LED Exemplarily represent) and image communication technology fast development, optical device has been studied and sent out recently Open up as wearable monitor, and its commercially produced product has been released.

Although due to relatively high price, optical device market was running into difficulty in the past, can be to What is treated is that market will be with wearable computer industry Fast Growth.The application field of optical device is expected to It is extended to industrial site, the place for safeguarding heavy product (such as automobile, aircraft and ship), storehouse Storehouse and movement entertainment (such as racing car).

Especially, the development of processor and software engineering causes the size of computing device to reduce.Optical device It is expected to be exploited for personal computing devices (such as smart mobile phone), rather than as only display image Display device.

In an optical device, the regulation of optical path is very important.Can be by adjusting the positions of lens Put with posture to realize the regulation of optical path.

Meanwhile, the optical device that the position and posture for being configured such that lens can not be conditioned, which has, to be fixed Optical path, and therefore can not remove undesirable image or the image comprising noise.

Accordingly, it would be desirable to which undesirable image can be removed by developing a kind of position by adjusting lens and posture Or the optical device of the image comprising noise.

Because display panel is located at the position of eyes of user, optical device (such as HMD) Accurate optical design is needed to focus in short distance.Multinomial research has been carried out and seeks to fill that this The research of one demand and reduction eyes of user fatigue simultaneously reduce wearing inconvenience.

In addition, when attempting to increase resolution ratio, even if it is accurate to focus on, but flicker or ghost image are still May occur, so as to result in undesirable image or fuzzy image.

Therefore, it is necessary to the noise produced by exterior light be removed, without removing what is produced in a display device Light.

The content of the invention

Technical problem

Therefore, a purpose of embodiment is to provide a kind of position by adjusting lens and posture and can gone The optical device of image except undesirable image or comprising noise.

In addition, another purpose of embodiment be to provide one kind can prevent due to exterior light occur flicker or The optical device of ghost image.

The purpose of embodiment should not necessarily be limited by above-mentioned purpose, and can according to following description those skilled in the art So that other NM purposes are expressly understood.

Technical scheme

According to one embodiment, a kind of optical device includes：Display unit；Lens, are configured as transmission The image for being formed and being transmitted due to the display unit；Substrate, is configured as accommodating the lens wherein； And adjustment unit, it is configured as moving the lens relative to the substrate, to adjust through described The path of the light of mirror.

According to another embodiment, a kind of optical device includes：Lens；Substrate, being configured as will be described Lens are accommodated wherein；And lever is adjusted, its one end is coupled to the lens, and its opposite end is (another End) outside the substrate, the regulation lever be configured as user pass through it is mobile described relative When end is moved the lens relative to the substrate, adjust through the path of the light of the lens.

According to another embodiment, a kind of optical device includes shell, and the shell is configured as changing from aobvious The path of the light for the image that showing device is sent, to provide the observer for carrying generation image, wherein described Shell includes：Reflecting surface, is configured as the light that reflection is launched from the display device；And mirror, Specified angle is tilted relative to the reflecting surface, so that the light that will be reflected from the reflecting surface is sent out Outside is mapped to, and wherein described shell has in optical grating construction, holographic optical elements (HOE) and moth ocular structure Any one.

Beneficial effect

In embodiment, by the work(for providing adjustment unit that user can directly adjust and mobile lens Can, optical device can be easily adjusted through the path of the light of lens, so as to optimize the path of light.

In embodiment, by providing adjustment unit and the regulation lens angle that user can directly be adjusted Function, optical device can be easily adjusted through the path of the light of lens, so as to optimize the path of light.

Therefore, by removing undesirable image or image comprising noise, (such image is due to shape Produced into undesirable light path), it is possible to increase the quality for the image being shown on optical device.

The optical device of embodiment can prevent flicker or ghost image as caused by exterior light.

Brief description of the drawings

By comprising further understanding the accompanying drawing of the disclosure to provide and show embodiment, and with specification one Act the principle for being used for explaining embodiment.

In the accompanying drawings：

Fig. 1 is the stereogram for showing the optical device according to one embodiment；

Fig. 2A is the exploded perspective view for showing the optical device according to one embodiment；

Fig. 2 B show to form the plan of the light path of image in the optical device according to one embodiment；

Fig. 3 is the plan for the part for showing the optical device according to one embodiment；

Fig. 4 is the amplification front elevation of C portion in Fig. 3；

Fig. 5 A are the amplification views of C portion in Fig. 3；

Fig. 5 B are the views for showing to be added into Fig. 5 A filler；

Fig. 6 is the amplification view of D parts in Fig. 3；

Fig. 7 is the view for showing the regulation lever according to another embodiment；

Fig. 8 is the view for showing head-mounted display apparatus, and it is one embodiment of optical device；

Fig. 9 is the view of the simulation result of veiling glare for showing to produce in head-mounted display apparatus；

Figure 10 is to show to be applied to regarding for the optical grating construction of shell in optical device according to one embodiment Figure；

Figure 11 is the view for showing to be applied to the holographic optical elements (HOE) of optical device according to one embodiment； And

Figure 12 is the veiling glare for showing to produce in conventional optical device and in the optical device according to embodiment Simulated measurement result view.

Embodiment

Hereinafter, it will be described in detail with reference to the accompanying drawings exemplary embodiment.Embodiment can in a variety of ways by Change and there can be various forms, specific embodiment will be described in the accompanying drawings and will be detailed herein Thin description specific embodiment.However, this is not intended as is limited to specific embodiment by embodiment, and in fact Apply all modifications that example is construed as including in the spirit and technical scope for falling into embodiment, etc. Tongfang Case and replacement.In this process, for the sake of for the clear of description and conveniently, component shown in accompanying drawing Size, shape etc. can be exaggerated.

Although term " first " and " second " etc. can be used to describe various elements, embodiment Should not be limited by these terms.These terms are used to distinguish between similar component.Additionally, it is contemplated that embodiment Configuration and the be particularly limited to term of operation are used only for explaining embodiment, rather than for limiting implementation The scope of example.

In the following description of embodiment, it should be understood that when each element is referred to as in another yuan When part " top " or " lower section ", its can directly in another element " top " or " lower section ", Or one or more intermediary elements can be formed with indirectly therebetween.In addition, it should also be appreciated that ground is, Can with the upward direction of finger element and in downward direction in element " top " or " lower section ".

In addition, relative terms " top/top/on ", " bottom/bottom/lower section " in description and claims It can be used to distinguish any one material or element with other materials or element, not necessarily use The relation or particular order of any physics or logic between description material or element.

In addition, in various figures, rectangular coordinate system (x, y, z) may be used.In Fig. 1 to Fig. 7 In, x- axles are parallel to the axle of the width of substrate, z-axis be parallel to vertical direction (its perpendicular to The width of substrate) axle, and y- axles are perpendicular to x- axles and the axle of z-axis.

In embodiment, optical device is the equipment (such as a pair of glasses) that may be worn on human body, and is permitted Perhaps the image that people's viewing is transmitted from external equipment, and less limited by place.(it is to be passed to equipment Send the source of image) can be smart mobile phone or any other mobile device, and can be with wired or nothing Line mode is connected to optical device.

Now, in order to dress the optical device according to embodiment, optical device can be coupled separably To glasses, or other wearable device (such as one secondary eye that can be dressed by user can be coupled to Mirror).

Fig. 1 is the stereogram for showing the optical device according to one embodiment, and Fig. 2A is shown according to reality Apply the exploded perspective view of the optical device of example.Fig. 2 B are to show the shape in the optical device according to embodiment Into the plan of the light path of image.

Light source cell 1000, light element 1100, light beam spray can be included according to the optical device of embodiment Penetrate unit 1200, display unit 1300, polarizer 1400, lens 1500, the first prism 1600 and Two prisms 1700.

In addition, substrate 1800, The lid component 1900 and fastening can be included according to the optical device of embodiment Component 2200, so as to which each above-mentioned component is coupled into bunchy.In addition, the optical device of embodiment can be wrapped Printed circuit board (PCB) 2000 and connector 2100 are included, optical device can be electrically connected to external equipment by it, And optical device can be allowed to be received from external equipment and reproduce image.

Light source cell 1000 may be electrically coupled to printed circuit board (PCB) 2000, can be via printed circuit board (PCB) 2000 receive electric current, and can launch light.Light source cell 1000 can by transmitting light various devices Formed, and can for example be formed by small LED, its medium and small LED has excellent durability simultaneously And the heat sent is less.

Light element 1100 can be used for the path for adjusting light so that the light launched from light source cell 1000 It is directed into light beam injection unit 1200.As shown in Figure 2 B, when being watched around light element 1100, Light source cell 1000 and light beam injection unit 1200 are arranged with being substantially perpendicular to each other.Then, in order to will be from The light for the formation image that light source cell 1000 is launched is guided to light beam injection unit 1200, light element 1100 Multiple lattices can be included, the lattice is located at appropriate position and is oriented in light element 1100 At appropriate angle.

In addition, by providing lattice, light element 1100 can be used for from light source cell 1000 to launch Light be uniformly distributed into light beam injection unit 1200.Therefore, equably launch from light element 1100 Light can be uniformly introduced to the surface of the light beam injection unit 1200 close to light element 1100.

Light beam injection unit 1200 can be used for the light introduced from light element 1100 launching single to display Member 1300, and will launch from the reproduction image that display unit 1300 is received to lens 1500, to permit Family allowable can with the naked eye watch image at full length.

That is, light beam injection unit 1200 can transfer light to display unit 1300, Huo Zheke The light for reproducing image is formed to be received from display unit 1300, and can be adjusted from display unit 1300 The formation of reception reproduces the path of the light of image.

In order to limit the path of light, light beam injection unit 1200 can take such as polarizing beam splitter The form of (polarizing beam splitter, PBS).Can be by coupling multiple lattices and each Coat (it can reflect and/or diffraction light) is formed on lattice to manufacture polarizing beam splitter.

Display unit 1300 is used to reproduce image, to allow user's with the naked eye specifically shape of detection image Formula.Display unit 1300 can be, for example, reflective display, it, which is launched, reproduces image to light beam injection Unit 1200.

Reflective display can be such as liquid crystal on silicon (Liquid Crystal on Silicon, LCoS) type. In LCoS displays, silicon substrate is mainly used as display device, and high-definition picture can be shown On small display screen.

Polarizer 1400 can be used for the imaging that polarization is introduced from display unit 1300.Polarizer 1400 It can be used for transmitting the p wave components of light and absorb the s wave components of the imaging of introducing.

Now, p ripples are the light waves vibrated on the direction parallel to the plane of incidence, and s ripples are vertical In the light wave vibrated on the direction of the plane of incidence.Herein, " plane of incidence " refers in the medium that light is introduced into, The plane limited by incident light wave, reflecting light and transmitted light wave.

In introduced light, 1400 transmission p glistening lights of waves of polarizer, and therefore pass through polarizer 1400 And the light of lens 1500 is introduced in only including p wave components.Certainly, other in certain are used on the contrary, working as During the polarizer 1400 of type, can only it be wrapped through polarizer 1400 and the light that is introduced in lens 1500 Include s wave components.

Above-mentioned polarizer 1400 can prevent when introduced light (it forms image) include p wave components and During s wave components, because the interference between the p wave components and s wave components of light causes deterioration of image quality.

Meanwhile, in the mode similar to polarizer 1400, light element 1100 can have polarization function, Will pass through the light that polarization is introduced from light source cell 1000, the p wave components and s wave components due to light are prevented Between the deterioration of image quality that causes of interference.

Lens 1500 can transmit the image from display unit 1300.In addition, lens 1500 can connect Receive and amplify the imaging introduced from polarizer 1400.That is, because by drawing from polarizer 1400 The image of the light formation entered is very small, so inconvenient user's viewing image.Therefore, lens 1500 It can be used for image being amplified to and be suitable for the size that user with the naked eye watches.

In addition, lens 1500 compensate for the aberration and spherical aberration of for example introduced light, Ke Yitong The introduced light of superrefraction changes the path of light, and can increase by formed by introduced light The resolution ratio of image.

Light through the formation enlarged drawing of lens 1500 is introduced in the first prism 1600.Now, in order to The path for the light that the first prism 1600 is incorporated into from lens 1500 is suitably adjusted, the one of lens 1500 Refractile body (refractor) can be formed on part.For example, can be by by medium couples to lens 1500 A part form the refractile body, wherein the medium has different from the remainder of lens 1500 close Degree.

First prism 1600 can be used for the eyeball E for allowing the image transmitted from lens 1500 to reach user. For this reason, it may be necessary to suitably adjust the path of the imaging from lens 1500.Can be in the first prism 1600 The upper regulation that light path is realized using total reflection.In addition, reflecting layer (not shown) can be formed On one prism 1600.

Now, it is empty from the image that lens 1500 are guided to the eyeball E of user by the first prism 1600 Picture.That is, it is different from real image (real image is to be located at the image in kind in front of user eyeball E), The image is the virtual image of user's visual perception, and it is not located in front of the eyeball of user, but is reproduced in On display unit 1300, due to optical path adjusting as described above, so it just looks like the eyeball positioned at user It is the same in front of E.

The path of the light of the formation virtual image in the optical device of embodiment is shown in Fig. 2 B.Specifically, First, the light source cell 1000 for being electrically connected to printed circuit board (PCB) 2000 emits light into light element 1100。

Then, light element 1100 adjusts the path of the light introduced from light source cell 1000 so that light quilt Guide to light beam injection unit 1200.Now, due to the lattice of light element 1100, light element 1100 It can be used for the light launched from light source cell 1000 being uniformly distributed into light beam injection unit 1200.This Outside, light element 1100 can have polarization function, will pass through so that being introduced from light source cell 1000 Light polarization, prevent the picture quality that the interference between p wave components and s wave components due to light causes from disliking Change.

Then, light beam injection unit 1200 launches the light introduced from light element 1100 to display unit 1300。

Then, display unit 1300 can reproduce image, and the light for forming reproduction image is launched again To light beam injection unit 1200.

Then, light beam injection unit 1200 launches the imaging introduced from display unit 1300 to polarization Device 1400.Now, light beam injection unit 1200 can take above-described polarizing beam splitter Form, to adjust the path of light in a variety of ways.

Then, polarizer 1400 causes the imaging light polarization introduced from light beam injection unit 1200.Now, Because polarizer 1400 only transmits the p wave components or s wave components of light, and absorbs other light waves, institute To be polarized through the light of polarizer 1400, only to have one in the p wave components or s wave components of light It is individual.This is used for the image matter for preventing that the interference between the p wave components and s wave components due to above-mentioned light from causing Amount deteriorates.

Then, lens 1500 are used to receiving the imaging that is introduced from polarizer 1400 and by the imaging It is amplified to and is suitable for the size that user with the naked eye watches.Now, as described above, refractile body can be formed For adjusting the path of light in a part for lens 1500, and the light of refractile body is passed through by with setting Incidence angle is incorporated into the first prism 1600.

Then, the first prism 1600 can be used for the path for the imaging that regulation is transmitted from lens 1500, So as to which most imaging is launched to the eyeball E of user at last.Now, existed using the first prism 1600 or formation The total reflection in the reflecting layer on the first prism 1600 can realize the regulation of light path.

Second prism 1700 can be coupled to the first prism 1600 and can be used for reduction and be actually reached The distortion of user eyeball E image.Via the first prism 1600, it is (empty that user can watch the virtual image simultaneously Seem the image being reproduced on display unit 1300) and object real image (real image be present in user eye Ball E front).

However, when the eyeball E of user and the end of the first prism 1600 are arranged to closer to each other, Due to the shape of the end of the first prism 1600, the real image for reaching user eyeball E may distortion.This It is that, because the shape of the end due to the first prism 1600, refraction, diffraction may be occurred by showing the light of real image Deng.

Therefore, when the second prism 1700 is coupled to the end of the first prism 1600 so that whole prism quilt During extension, it can reduce due to real image distortion caused by the end shape of the first prism 1600.

Substrate 1800 can have the receiving space formed wherein, and can be used in receiving space Accommodate such as light element 1100, light beam injection unit 1200, display unit 1300, polarizer 1400 With lens 1500.Because substrate 1800 accommodates several components of embodiment, it can have complexity Shape.Therefore, it is possible to use the method (such as injection molding) of labyrinth can be manufactured to manufacture Substrate 1800.

The lid component 1900 can be with least a portion at the top of closed base 1800, to allow each group Part is housed stably in substrate 1800.In addition, by fastening member 2200, The lid component 1900 can To be coupled to substrate 1800.

In addition, boss (boss) 171 can be formed on the upper surface in The lid component 1900.When boss 171 When being coupled to the recess to be formed in printed circuit board (PCB) 2000 or hole, the top of printed circuit board (PCB) 2000 The lid component 1900 can be coupled to.

The top and bottom of printed circuit board (PCB) 2000 can be coupled to The lid component 1900 and substrate 1800, And it may be electrically coupled to light source cell 1000 and display unit 1300.By this way, electricity is printed Road plate 2000 can send back picture signal to be reproduced light source cell 1000, and can be by needed for Electric power is supplied to light source cell 1000 and display unit 1300.

Meanwhile, printed circuit board (PCB) 2000 can have the recess formed at the top and bottom of it or hole.So, The top and bottom of printed circuit board (PCB) 2000 can be coupled to be formed on the upper surface of The lid component 1900 Boss 171 and the boss 171 that is formed on the lower surface of substrate 1800.

Connector 2100 can be used for printed circuit board (PCB) 200 and external equipment being connected to each other.Now, outside Portion's equipment can include, and such as controller (it controls the optical device of embodiment), storage device are (wherein Record have image to be reproduced) and communicator (it can set the movement of such as smart mobile phone etc It is standby to be linked to optical device).

Fastening member 2200 can be used for The lid component 1900 and substrate 1800 being coupled to each other.Therefore, tightly Gu component 2200 can be any fastening member, as long as they can be inserted in The lid component 1900 and base Hole that bottom 1800 is formed in each or recess are so as to by The lid component 1900 and substrate 1800 separably coupling Connect.For example, fastening member 2200 can be bolt, screw or coupling pin.

Fig. 3 is the plan for the part for showing the optical device according to embodiment.Fig. 4 is C in Fig. 3 Partial amplification front elevation.Fig. 5 A are the amplification views of C portion in Fig. 3.Fig. 5 B be show by Added to the view of Fig. 5 A filler 200.

The optical device of embodiment can include adjustment unit.By relative to the mobile lens of substrate 1800 150, adjustment unit can be used for regulation through the path of the light of lens 1500.

For example, as shown in figure 3, adjustment unit can relative to substrate 1800 around z-axis (its perpendicular to X- axles, x-axis is parallel with the width of substrate 1800) relay lens 1500, so as to adjust lens 1500 Around the anglec of rotation of z-axis.

That is, the position that adjustment unit can represent solid line of the lens 1500 for example from by Fig. 3 Rotate to the position being illustrated by the broken lines.By relay lens 1500, adjustment unit can be adjusted through lens 1500 and be introduced into the first prism 1600 light path.

When adjusting the path for the light for being introduced in the first prism 1600 as described above, user can be adjusted most The quality of the image included in the light for being introduced into user eyeball E eventually.In addition, the path by adjusting light, Undesirable image or the image comprising noise can be prevented to be introduced into eyeball E.

Meanwhile, in one embodiment, adjustment unit can include regulation lever 100.Adjust lever 100 One end can be coupled to lens 1500, the other end of regulation lever 100 can be exposed on substrate Outside 1800.By moving the opposite side of regulation lever along y- axles, user can be relative to substrate 1800 Around z-axis relay lens 1500.

As shown in figure 4, by forming the pilot hole 180 in substrate 1800, regulation lever 100 to A few part can be exposed on outside substrate 1800, and passes through the regulation outside mobile substrate 1800 The part that is exposed of lever 100, user can adjust the angle of lens 1500.

Simultaneously, it is necessary to maintain regulation lever 100 after the movement on y- axles at position, without nothing The mobile risk of meaning.Therefore, the width of the pilot hole 180 between upper and lower surface 180a can be adjusted, To allow the upper and lower surface 180a CONTACT WITH FRICTIONs for adjusting lever 100 and pilot hole 180.

Now, between the external peripheral surface of regulation lever 100 and the upper and lower surface 180a of pilot hole 180 The amplitude of the frictional force of generation can be set to appropriate value, and it allows user to be moved along pilot hole 180 Lever 100 is adjusted without applying big power, but adjusting rod 100 can be prevented in upper and lower surface 180a It is upper to slide, as long as not applying the big external force of power moved than user needed for regulation lever 100.

In order to produce the upper and lower surface 180a in the external peripheral surface and pilot hole 180 of regulation lever 100 Between frictional force above-mentioned amplitude, it is necessary to suitably regulation regulation lever 100 cross section radius with The distance between and the upper and lower surface 180a of pilot hole 180.

In addition, passing through the upper and lower surface 180a of external peripheral surface and pilot hole 180 in regulation lever 100 It is upper formation coat (it is formed by the flexible material of such as rubber etc), can reduce by regulation lever with The abrasion of regulation lever 100 and pilot hole 180 caused by friction between pilot hole 180, is maintained simultaneously The amplitude of above-mentioned frictional force.

As described above, when regulation lever 100 with the upper and lower surface 180a of pilot hole 180 is rubbing against one another contacts When, regulation lever 100 can at position after the movement in pilot hole 180 remains stationary.

In addition, when adjust lever 100 with the upper and lower surface 180a of pilot hole 180 is rubbing against one another contact when, The frictional force of generation can reduce the vibrations of lens 1500.In addition, as described above, when coat (its by The flexible material of such as rubber etc is formed) formed regulation lever 100 external peripheral surface or pilot hole When on 180 upper and lower surface 180a, coat can be used for absorbing vibrations, therefore can further reduce The vibrations of lens 1500.

Lens 1500 can include the first projection 151 and the second projection 152.First projection 151 can be with shape On into the side in lens 1500 and its one end can be coupled to regulation lever 100.Meanwhile, such as scheme Shown in 5A, substrate 1800 can include the first depression (indentation) 182, and it is configured as receiving the One projection 151 or at least a portion for adjusting lever 100, and connected with pilot hole 180.

The lens 1500 that are represented by the solid line in Fig. 5 A, the first projection 151 and regulation lever 100 can be with The lens 1500' being illustrated by the broken lines, the first projection 151' and regulation lever 100' position are moved to, simultaneously It is accommodated in the first depression 182 and substrate 1800.Moved by this, lens 1500 can be adjusted Position and posture relative to substrate 1800, and therefore can adjust the road of the light through lens 1500 Footpath.

Regulation lever 100 can be appropriately designed, so as to be along pilot hole 180 it is moveable, directly To it and the contact facing surfaces of pilot hole 180.Therefore, the width of the first depression 182 can be more than or equal to Width between the apparent surface of pilot hole 180, so as not to the movement of interference adjustments lever 100.

First projection 151 is to be coupled to the region of regulation lever 100.Therefore, lever 100 is adjusted One end and the end of the first projection 151 can be coupled to each other via such as adhesive, can be tightened each other, Or can be formed integrally with each other via such as injection molding.

Second projection 152 can be formed on the opposite side of lens 1500, with being formed with the first projection thereon 151 side is relative.The second projection 152, the 3rd projection 184 can be supported by the 3rd projection 184 In the second depression 183 formed therein for accommodating the second projection 152.Said hereinafter with reference to Fig. 7 It is bright.

As shown in Figure 5 B, the optical device of embodiment can include filler 200.Filler 200 can be with It is arranged in the first depression 182, so as at least one for surrounding the first projection 151 or adjusting lever 100 Point.

Filler 200 can be formed by the flexible material of such as sponge etc.Filler 200 can be filled It is loaded in by the first depression 182 and the first projection 151 or the regulation lever 100 being contained in the first depression 182 In the space limited.In addition, filler 200 can be loaded at least a portion of pilot hole 180 In.

Filler 200 can close pilot hole 180, so that for preventing foreign substance from passing through pilot hole 180 It is externally entering the space in substrate 1800 and lens 1500.Now, because filler 200 is by flexibility Material is formed, thus when the first projection 151 or regulation lever 100 by it is mobile when, filler 200 can be with Deformation, so as to keep pilot hole 180 to close.

Filler 200 can be used for preventing foreign substance from entering pilot hole 180 and preventing from polluting lens 1500, so as to prevent the optical property of lens 1500 from deteriorating.

In addition, when adjusting the projection 151 of lever 100 or first by movement, filler 200 is deformed, from And play a part of damper.Therefore, filler 200 can limit the regulation projection of lever 100 or first 151 quick movement, so as to increase the position of lens 1500 and the degree of regulation of posture.

Now, using such as adhesive, filler 200 can be attached to depression opposite flank or Basal surface, to be fixed and to be loaded in the valley.

Fig. 6 is the amplification view of D parts in Fig. 3.As shown in fig. 6, the optical device of embodiment can With including the second depression 183 and the 3rd projection 184.

Reference picture 3, the second depression 183 can be formed in one of two inner surfaces of substrate 1800, One of two inner surfaces is relative with the side surface for being formed with the first depression 182, and second At least a portion of projection 152 may be accommodated in the second depression 183.

As shown in fig. 6, the 3rd projection 184 (can not include from two side surfaces of the second depression 183 The open area of second depression 183 and the enclosed region relative with the open area) it is prominent.Now, The end of each can be contacted with the second projection 152 in three projections 184, so that for limiting lens 1500 vibrations.

Therefore, although by mobile regulation lever 100, lens 1500 can rotate around z-axis, but thoroughly The vibrations of mirror 1500 are by the friction between pilot hole 180 and regulation lever 100 and the 3rd projection 184 The limitation of contact between the second projection 152.

By this way, though when wearing have embodiment optical device user movement when, lens 1500 It can still be stably mounted, so as to allow user to watch high-quality image.

Meanwhile, when relative to 1800 relay lens 1500 of substrate, the second projection 152 can be by simultaneously Rotation, and when rotating the second projection 152, at least a portion of each 3rd projection 184 can be with Second projection 152 is in rolling contact.

Be in rolling contact for above-mentioned, the 3rd projection 184 can have such as arcuate in shape, semi-circular shape or Curved shape, therefore at least a portion of the 3rd projection 84 can be with second when rotating the second projection 152 Projection 152 is in rolling contact.

For example, as shown in fig. 6, adjusting lever 100, the lens 1500 represented by solid line when passing through movement When being moved to the lens 1500' being illustrated by the broken lines and the second projection 152' position with the second projection 152, Second projection 152 rotates relative to the 3rd projection 184 for being fixed to substrate 1800.

Now, at least a portion of the second projection 152 and the 3rd projection 184 can be in rolling contact each other. Because being in rolling contact needs the frictional force smaller than sliding contact, therefore, with whole second projection and the 3rd Sliding contact between projection 184 compares, by between the second projection 152 and the 3rd projection 184 Offer is in rolling contact region, can significantly reduce the abrasion of the second projection 152 or the 3rd projection 184.

In addition, by being in rolling contact between the second projection 152 and the 3rd projection 184, being compared by applying The small torque of the torque of sliding contact between whole second projection and the 3rd projection 184 is to adjusting lever 100, it is possible to adjust position and the posture of lens 1500, and the second projection 152 can be relative to base Bottom 1800 further smoothly rotates.

Fig. 7 is the view for showing the regulation lever 100 according to another embodiment.As shown in fig. 7, according to The regulation lever 100 of another embodiment is configured such that by forming the guiding in substrate 1800 Hole 180, at least a portion of the regulation lever 100 is outside substrate 1800, and adjusting rod 100 External peripheral surface engaged with the surface of pilot hole 180 (engage with).

Therefore, regulation lever 100 can include gear 110 and clamper 120, and pilot hole 180 There can be the second tooth 181 formed on its upper and lower surface 180a, to be engaged with gear 110.

The side of gear 110 can be rotationally coupled to lens 1500, and can have outside it The first tooth 111 formed on circumferential surface.First tooth 111 can have for example for the second tooth 181 The shape and size of engagement.Clamper 120 can be coupled to the opposite side of gear 110, and can be with For swing pinion 110.

It can use such as adhesive or screw that clamper 120 is couple into gear 110.In addition, passing through Injection molding, clamper 120 and gear 110 can be integrally formed.

As described above, pilot hole 180 can be set on at least a part of the surface thereof, especially, It is arranged on the upper and lower surface 180a with the second tooth 181 (it is engaged with the first tooth 111 of gear 110) On.Now, because the first tooth 111 and the second tooth 181 are engaged with each other, regulation lever 100 by with , would not automatically edge as long as be set to user does not move regulation lever 100 by rotating clamp fastener 120 Pilot hole 180 to move.

Therefore, with Fig. 5 A illustrated embodiment identical modes, the regulation lever 100 of the present embodiment can With remains stationary at the position after the movement in pilot hole 180.

In embodiment, when user's rotating clamp fastener 120, gear 110 can be rotated, so that edge Pilot hole 180 to move.Then, the first projection 151 and lens 1500 of gear 110 are coupled to It is mobile, therefore user can be adjusted through lens 1500 by the position and posture for adjusting lens 1500 Light path.

Meanwhile, filler 200 as shown in Figure 5 B can also be arranged in Fig. 7 embodiment, and And damper is may be used as, it closes pilot hole 180, to prevent foreign substance from entering the He of substrate 1800 Lens 1500.

In the present embodiment, using adjustment unit, optical device can be easily adjusted through lens 1500 Light path, so as to optimize the path of light, wherein adjustment unit can directly be adjusted by user and For mobile lens 1500.

In this way it is possible to by remove the undesirable image as caused by the light path for being not intended to be formed or Image comprising noise, to improve the quality for the image being shown on optical device.

Fig. 8 is the view for showing head-mounted display apparatus, and it is one embodiment of optical device.

Reference picture 8, head-mounted display apparatus includes display device 10, lens 12 and prism 14.

Display device 10 is used to launch the light for forming image.Display device 10 can be Reflective mode silicon base fluid Brilliant (LCoS) device, digital light processing (DLP) device, the miniature LCD device for being provided with light source Or the miniature OLED device of self-luminous, and can have 1 inch or smaller of size.Simultaneously as Reflective LCoS devices, DLP devices and miniature LCD device are not selfluminous devices, so needing coupling It is connected to external light source.That is, the miniature LCD of transmission-type for using backlight can be used or adopted With the reflective miniature LCD of preceding light (front light).Because miniature OLED device is self luminous, So without single light source, and therefore head-mounted display apparatus can be configured with smaller chi It is very little.When setting light source, light source can have three wavelength bands, i.e. red R, green G and blueness B. At this point it is possible to use following optical system：That is, the optical system adjusts the path of light so that from light source The light of transmitting is introduced into display device 10.For example, light source can be configured with the mirror of recessed reflecting surface Son.

Lens 12 are referred to as collector lens, and it adjusts the path for the light launched from display device 10 and will Light is focused on prism 14.Collector lens is that (Ray Of Light, it is vertical at some from light source by luminous flux Launch in body angle) collection to smaller solid angle to realize the lens of high illumination.Collector lens can be with Precision that need not be big as imaging len, and light assemble solid angle can be with as large as possible.Therefore, Collector lens has the aperture bigger than focal length.Lens 12 can be by selected from least one spherical lens and The lens combination of at least one non-spherical lens.

Prism 14 is a kind of Optical devices, and it adjusts the path of introduced light to light be directed to observer Pupil, and including reflecting surface 15 and 16 (it is reflected through the light of the introducing of lens 12) and anti- Penetrate mirror 17 (it tilts specified angle to reflect and launch light relative to reflecting surface 15 and 16).Instead It can be beam splitter or half-reflecting mirror to penetrate mirror 17, and it is optionally transmitted according to its wavelength or polarized component Light.

Using above-mentioned configuration, the image in display device 10 is introduced in the eye E of observer.

Now, the light introduced in first path R1 is reflected by the first reflecting surface 15, and on the second tunnel The light introduced in the R2 of footpath is reflected by the second reflecting surface 16, so that all light are launched by speculum 17. However, in a practical situation, there is the light in addition to the light launched from display device 10, and therefore Generation flashes or ghost image.That is, generating veiling glare, this causes deterioration of image quality.

Accordingly, it would be desirable to veiling glare be removed, to realize lively high quality graphic.

Fig. 9 is the view of the simulation result of veiling glare for showing to produce in head-mounted display apparatus.Reference Fig. 9, it can be seen that generate veiling glare in region A and region B.

In the present embodiment, in order to remove veiling glare, optical grating construction, holographic optical elements (HOE) or moth ocular structure It is applied to the shell of prism.

Although the wear-type that a kind of any of the above described structure of the present embodiment illustration is applied to described in Fig. 8 shows Show the prism used in equipment, but the structure can equally be well applied to other optical devices.

Figure 10 is to show to be applied to regarding for the optical grating construction of shell in optical device according to one embodiment Figure.

Shell 30 can have elongated hexahedral shape, and the remainder of shell 30 (does not include Part for introducing and launching light), i.e. its upper surface 32, lower surface, preceding surface 34 and rear surface It can be formed from the same material and can have identical configuration.

One surface of shell 30 can have configuration as shown in Figure 10, and with specified width, which width W Groove formed with constant interval.Using this configuration, even if being introduced from outside into veiling glare 36, still can Enough prevent because veiling glare produces noise.

Now, according to the wavelength and incidence angle of the veiling glare being introduced from outside into, pitch forms pattern.With Lower equation represents the relation between external stray light and pattern light.

Equation 1

P is pitch, and λ is the wavelength of veiling glare, and θ is the incidence angle of veiling glare.

That is, pitch can be directly proportional to the wavelength of veiling glare, and can be with veiling glare incidence Angle is inversely proportional.

In addition, optical grating construction can take triangular grating, the projection of this grating has triangular shaped.

Figure 11 is the view for showing to be applied to the holographic optical elements (HOE) of optical device according to one embodiment.

Holographic optical elements (HOE) is the optical element using principle of holography.Holographic optical elements (HOE) can be by transparent material Material is formed, and can control almost 100% of the light with specific incidence angle and specific wavelength.Therefore, Holographic optical elements (HOE) can reflect or reflected light 100%, and can be according to 50:50 ratio cut partition Light.

Holographic optical elements (HOE) is configured such that high-index material 42 and low-index material 44 such as figure institute It is alternately arranged with showing.Now, with above-mentioned optical grating construction identical mode, pitch can depend on spuious The wavelength and incidence angle of light 46, and represent above-mentioned optical grating construction pitch pattern it is identical with above-mentioned equation Equation can be equally applicable to pitch.That is, the pitch and the ripple of veiling glare of holographic optical elements (HOE) Length is directly proportional and is inversely proportional with the incidence angle of veiling glare.

In addition, when moth ocular structure is applied to shell, it is possible to achieve remove veiling glare.

Moth ocular structure refers to the structure of the eyes of moth on literal, and is the week with about 200nm The nipple shape nanostructured of phase and about 150nm height.When application moth ocular structure, no matter light What wavelength is, can reduce the reflection of light.When being sufficiently smaller than the wavelength of light in the cycle of nanostructured, Nanostructured is considered as the single medium on light.Because moth ocular structure has the surface of gentle dip, institute The medium that its effective refractive index is gradually changed is considered as with it.Because the reflection of light is by medium refraction index Difference caused by, so this structure can efficiently reduce the reflection of light.

Any one of optical grating construction, holographic optical elements (HOE) and moth ocular structure can be applied to prism, And no matter which kind of structure applied, can effectively it reduce due to the ghost image that veiling glare is caused.Now, The structure can be applied on the only one surface of shell, or can be simultaneously applied all Four surfaces, including upper surface, lower surface, rear surface and preceding surface.

Figure 12 is the veiling glare for showing to produce in conventional optical device and in the optical device according to embodiment Simulated measurement result view.

(a) in Figure 12 illustrates the generation of veiling glare when using conventional prism, and in Figure 12 (b) production of the veiling glare when being applied to prism according to the triangular grating structure of one embodiment is illustrated It is raw.It is to be understood that the veiling glare generating region 52 in Figure 12 (a) figure is big, and in figure Veiling glare generating region 54 there's almost no in 12 (b) figure.

Although foregoing merely illustrates several embodiments, various other embodiments are also possible.On Stating the technology contents of embodiment can be combined in a variety of manners, rather than incompatible, therefore, can To be realized in new embodiment.

Claims (10)

1. a kind of optical device, including：

Display unit；

Lens, are configured as the image that transmission is formed and transmitted by the display unit；

Substrate, is configured as accommodating the lens wherein；And

Adjustment unit, is configured as moving the lens relative to the substrate, to adjust through described The path of the light of mirror.

2. optical device according to claim 1, wherein the adjustment unit includes regulation lever, One end of the regulation lever is coupled to the lens, and the opposite end of the regulation lever is exposed to described Outside substrate, to allow user described to be rotated relative to the substrate by the mobile opposite end Mirror.

3. optical device according to claim 2, wherein at least a portion of the regulation lever is led to Cross and form the pilot hole in the substrate outside the substrate, and

Wherein when the external peripheral surface of the regulation lever is contacted with the mantle friction of the pilot hole, institute State regulation lever and remains stationary at the position that lever is moved to is adjusted described in the pilot hole.

4. optical device according to claim 2, wherein at least a portion of the regulation lever is led to Cross and form the pilot hole in the substrate outside the substrate, and

Wherein described regulation lever has the cylindrical weekly form for being configured as engaging with the surface of the pilot hole Face.

5. a kind of optical device, including：

Lens；

Substrate, is configured as accommodating the lens wherein；And

Lever is adjusted, its one end is coupled to the lens, its opposite end is exposed to outside the substrate, The adjusting rod is configured as user by the mobile opposite end to move described relative to the substrate During lens, adjust through the path of the light of the lens.

6. optical device according to claim 5, wherein the regulation lever includes gear and clamping Device, wherein the gear has the side for being rotationally coupled to the lens and formed in the tooth The first tooth on the external peripheral surface of wheel, the clamper be coupled to the opposite side of the gear and by It is configured to rotate the gear,

Wherein described substrate includes pilot hole, and the pilot hole is arranged on the substrate surface with the second tooth In at least a portion, second tooth is configured as engaging with first tooth, and

Wherein described user is by rotating the clamper relative to the substrate rotation lens.

7. a kind of optical device, including shell, the shell are configured as changing what is from display device launched The path of the light of image, to provide the observer for carrying generation image,

Wherein described shell includes：

Reflecting surface, is configured as the light that reflection is launched from the display device；And

Mirror, tilts specified angle, to be reflected from the reflecting surface relative to the reflecting surface The light be transmitted into outside, and

Wherein described shell has any one of optical grating construction, holographic optical elements (HOE) and moth ocular structure.

8. optical device according to claim 7, wherein the optical grating construction has pitch, it is described The wavelength of exterior light of light of the pitch to not including launching from the display device is directly proportional, and with it is described The sine value of the incidence angle of exterior light is inversely proportional.

9. optical device according to claim 7, wherein the optical grating construction has according to such as the following The pitch of formula formation：

P=λ/2sin θ

Wherein, P is the pitch, and λ is the wavelength of the exterior light, and θ is the exterior light Incidence angle.

10. optical device according to claim 7, wherein the holographic optical elements (HOE) is by transparent material Material is formed, and high-index material and low-index material including being alternatively formed.