CN101025504A - Optical device and method for manufacturing the same - Google Patents
Optical device and method for manufacturing the same Download PDFInfo
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- CN101025504A CN101025504A CN 200610100548 CN200610100548A CN101025504A CN 101025504 A CN101025504 A CN 101025504A CN 200610100548 CN200610100548 CN 200610100548 CN 200610100548 A CN200610100548 A CN 200610100548A CN 101025504 A CN101025504 A CN 101025504A
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Abstract
The present invention provides an optical element which can restrain the circumstance that the polarizing characteristic of a polarizing plate may decline because of the rise of the temperature of the polarizing plate compared with existing optical element. The optical element (1) is characterized in that it has a polarizing plate (10) composed of a polarizing layer (12), a light-transmissive substrate (20) bonded on one surface of the polarizing layer (12) of the polarizing plate (10), and other light-transmissive substrate (30) bonded on the other surface of the polarizing layer (12) of the polarizing plate (10); the light-transmissive substrate (20) and other light-transmissive substrate (30) are made of sapphire which works as inorganic material.
Description
Technical field
The present invention relates to optical element and manufacture method thereof.
Background technology
As the polarization plates that is used for optical device, the polarization plates of known 2 layers of structure or 3-tier architecture: wherein, usually, single or double at the polarization layer that constitutes by polyvinyl alcohol (PVA) (PVA), lamination the supporting layer that constitutes by the Triafol T (TAC) that is used for mechanicalness intensity etc. is guaranteed (for example, with reference to patent documentation 1.)。By the supporting layer that TAC constitutes, because good at aspects such as the transparency, homogeneity, planarityes, the anisotropy that is caused by molecular orientation is in the extreme little, is used for supporting layer that polarization layer is supported so be suitable as.
, in existing polarization plates, be not absorbed in inside, cause the temperature of polarization plates to rise so produce a large amount of heat because pass the light of polarization layer.Therefore, there is the polarization plates deterioration and problem that the polarization characteristic of polarization plates reduces.
Therefore, as the optical element of the structure that solves so optical element of problem, disclose the light-transmitting substrate that the two sides (outside of the supporting layer of polarization plates) that has at plane of polarization attached heat conductivity (for example, with reference to patent documentation 2.)。According to this optical element, the heat in that polarization plates produces because reject heat to outside the system by the light-transmitting substrate of heat conductivity, rises so can suppress the temperature of polarization plates.The problem that therefore, can suppress the polarization characteristic reduction of polarization plates deterioration, polarization plates.
[patent documentation 1] spy opens flat 7-20317 communique
[patent documentation 2] spy opens the 2000-112022 communique
But the high briliancy propelling of light source in optical device in recent years produces the temperature rising that causes polarization plates than existing a large amount of heat easily in polarization plates.Therefore, the temperature of polarization plates of resulting from rises, and causes the polarization plates deterioration easily and problem that the polarization characteristic of polarization plates reduces.
Summary of the invention
Therefore, the present invention makes in order to solve so problem, purpose be to provide with existingly compare, can be to resulting from that the temperature of polarization plates rises and the optical element that the situation that the polarization characteristic of polarization plates reduces suppresses.And purpose is to be provided for making the manufacture method of so good optical element.
The present inventor, in order to achieve the above object, to in the polarization plates that is recorded in patent documentation 1 and be recorded in the optical element of polarization plates of patent documentation 2, the temperature of polarization plates of resulting from rises and reason that the polarization characteristic of polarization plates reduces, in order to study the result who verifies and carry out effort with keen determination repeatedly, draw opinion: this reason, the supporting layer that is (1) formation polarization plates is exposed to the outside, and there is supporting layer in (2) at the light incident side and/or the light emitting side of the polarization layer that constitutes polarization plates.
That is, in the polarization plates that is recorded in patent documentation 1, be exposed to the outside, so result from that the temperature of polarization layer rises and make supporting layer expand easily, be out of shape from the immersion of the moisture of extraneous air because constitute the supporting layer of polarization plates.Therefore, the result that the molecular orientation in the supporting layer of light incident side and light emitting side gets muddled reduces the polarization characteristic as polarization plates.And, under this situation, because if the disorder of the molecular orientation in the supporting layer of generation light incident side, then the disorder of this molecular orientation is directly at the tested polarization of polarization layer, so reduce significantly as the polarization characteristic of polarization plates.
On the other hand, in the optical element that is recorded in patent documentation 2, because have the structure that has attached the light-transmitting substrate of heat conductivity on the two sides of polarization plates, so supporting layer can not be exposed to the outside.Therefore, can be to resulting from and supporting layer expands, the situation of distortion suppresses from the immersion of the moisture of extraneous air.
But usually, heat conductivity is little because supporting layer is compared to light-transmitting substrate, so even attach the light-transmitting substrate of heat conductivity on the two sides of polarization plates, the heat that produces at polarization layer also is difficult to pass to light-transmitting substrate by supporting layer.Therefore, the heat that produces at polarization layer is failed to dispel the heat and is caused the temperature of polarization layer to rise, and the birefringence that causes because of thermal strain takes place in supporting layer the result, and the polarization characteristic as polarization plates is reduced.
Therefore, the present inventor, based on above opinion, expect: if the polarization plates that adopts light incident side and light emitting side at polarization layer not to have the structure of supporting layer as polarization plates, then compare with existing, can be to resulting from that the temperature of polarization plates rises and the situation that the polarization characteristic of polarization plates reduces suppresses, and the present invention is finished.
Optical element of the present invention, it is characterized in that, possess: comprise the polarization plates of polarization layer, fit in aforementioned polarization plates polarization layer a side the surface the 1st light-transmitting substrate and fit in the opposing party's the 2nd light-transmitting substrate on surface of the polarization layer of aforementioned polarization plates; Aforementioned the 1st light-transmitting substrate and aforementioned the 2nd light-transmitting substrate are made of inorganic material.
Therefore, according to optical element of the present invention, because polarization plates does not have supporting layer, so there is not the generation of the disorder of the molecular orientation in the supporting layer.That is, because the birefringence that does not exist the thermal strain by supporting layer to cause, do not rise and the polarization characteristic as polarization plates is reduced significantly so can not result from the temperature of polarization plates.
And, according to optical element of the present invention, because possess the polarization plates that comprises polarization layer, and fit on the two sides of polarization layer the 1st light-transmitting substrate and the 2nd light-transmitting substrate, so can make the heat that takes place at polarization layer not be delivered to the 1st light-transmitting substrate and the 2nd light-transmitting substrate effectively by supporting layer.Therefore, the temperature that can suppress polarization plates (polarization layer) rises.
Thereby, optical element of the present invention, become with existing comparing can be to resulting from that the temperature of polarization plates rises and the optical element that the situation that the polarization characteristic of polarization plates reduces suppresses.
And, according to optical element of the present invention, because have by the 1st light-transmitting substrate and the 2nd light-transmitting substrate structure, so can access predetermined physical strength from two sides clamping polarization layer.
Usually, be organic member because be used for the supporting layer of polarization plates, temperature rises easily so pyroconductivity is low.And, by the supporting layer that organic member constitutes, deterioration, molecular orientation disorder under hot and humid condition.Thereby, if having a polarization plates deterioration of the supporting layer that constitutes by organic member, the then transmissivity reduction in the supporting layer, Yin Re and polarization characteristic reduces significantly.
But, according to optical element of the present invention, because polarization plates does not have supporting layer, so also the sort of undesirable condition can not take place.That is, can suppress the reduction of the light transmission in the polarization plates.
In optical element of the present invention, preferred: aforementioned the 1st light-transmitting substrate and aforementioned polarization layer and aforementioned the 2nd light-transmitting substrate, fit by adhesive or bonding agent respectively.
By so constituting, can suppress the generation of the surface reflection at the interface between each member, can improve light transmission.
And, even under the linear expansion coefficient of the 1st light-transmitting substrate, polarization layer and the mat woven of fine bamboo strips 2 light-transmitting substrates situation inequality respectively, also be difficult to cause peeling off of binding face place between each member, can suppress the decline of long-term reliability.
In optical element of the present invention, preferred: at least one side among aforementioned the 1st light-transmitting substrate and aforementioned the 2nd light-transmitting substrate is made of sapphire or crystal.
Because the light-transmitting substrate heat conductivity that is made of these materials is good in the extreme, so can reject heat to efficiently in the heat that polarization layer takes place outside the system, the temperature that can suppress polarization layer effectively rises.
In optical element of the present invention, preferred: at least one side among aforementioned the 1st light-transmitting substrate and aforementioned the 2nd light-transmitting substrate is made of quartz glass, hard glass and other clear glass.
Because less by the light-transmitting substrate birefringence that these materials constitute, descend so can suppress the quality of the light beam by light-transmitting substrate, can suppress to incide the light beam of polarization plates or the quality of the light beam that penetrates from polarization plates descends.And, because it is less by the light-transmitting substrate coefficient of thermal expansion that these materials constitute, so bond to by on the light-transmitting substrate that so the coefficient of thermal expansion materials with smaller constitutes by the polarization plates that will have the elongation that causes by heat, character that distortion is bigger, can suppress the distortion of polarization plates self.
In optical element of the present invention, preferred: at least one side among aforementioned the 1st light-transmitting substrate and aforementioned the 2nd light-transmitting substrate is made of the sintered body of sintered glass ceramics or cube crystalline substance.
The direction of principal axis that the thermal expansion of the sintered body by making sintered glass ceramics or cube crystalline substance is big and the bearing of trend of polarization layer are consistent, can suppress the thermal deformation of polarization layer.
Also have, as the 1st light-transmitting substrate and the 2nd light-transmitting substrate, except above-mentioned, the light-transmitting substrate that can also adopt the light-transmitting substrate that constitutes by blank glass, the light-transmitting substrate that constitutes by the light-transmitting substrate of sending lachs (registered trademark) to constitute, by YAG (yttrium aluminium garnet) polycrystalline suitably, constitutes by aluminum oxynitride etc.
In optical element of the present invention, preferred: at least one side among aforementioned the 1st light-transmitting substrate and aforementioned the 2nd light-transmitting substrate is made of the material with optic axis; Make and the polarization axle almost parallel of the optic axis of the light-transmitting substrate that constitutes by aforementioned material and aforementioned polarization layer or generally perpendicularly to dispose aforementioned the 1st light-transmitting substrate and aforementioned the 2nd light-transmitting substrate for aforementioned polarization layer with optic axis.
By so constituting, optic axis by suppressing to betide light-transmitting substrate among aforementioned the 1st light-transmitting substrate and aforementioned the 2nd light-transmitting substrate, that constitute by material with optic axis not with the situation of the polarization axle almost parallel of polarization layer or approximate vertical under undesirable birefringence, can improve the quality of optical element.
Also have, in this instructions so-called " polarization axle of polarization layer ", be polarisation of light axle by polarization layer.
In optical element of the present invention, preferred: aforementioned the 1st light-transmitting substrate and aforementioned the 2nd light-transmitting substrate are made of same material.
By so constituting, can seek the reduction of manufacturing cost.And, because the linear expansion coefficient unanimity, so can reduce the strain that causes by internal stress.
The manufacture method of optical element of the present invention, be used to make the 1st light-transmitting substrate that possesses polarization layer, constitute by inorganic material and the optical element of the 2nd light-transmitting substrate with optic axis, it is characterized in that, comprise in the following sequence: the adhesive working procedure of coating, wherein, at a side's of the polarization layer of aforementioned polarization plates surface applied adhesive; The 1st bonding process wherein, makes a side's of aforementioned polarization layer surface and aforementioned the 1st light-transmitting substrate fit by aforementioned adhesive; The adhesive applicating operation, wherein, at the opposing party's of the polarization layer of aforementioned polarization plates surface applied bonding agent; With the 2nd bonding process, wherein, aforementioned polarization layer and aforementioned the 2nd light-transmitting substrate are fitted by aforementioned bonding agent.
Therefore, according to the manufacture method of optical element of the present invention, because employing does not have the polarization plates of supporting layer and make optical element, so there is not the generation of the disorder of the molecular orientation in the supporting layer.That is,, do not rise and the polarization characteristic as polarization plates is reduced significantly so can not result from the temperature of polarization layer because there is not the birefringence that causes by the thermal strain in the supporting layer.
And, manufacture method according to optical element of the present invention, because can be manufactured on the optical element that the two sides of polarization layer makes the structure of the 1st light-transmitting substrate and the applying of the 2nd light-transmitting substrate, can make the heat that takes place at polarization layer not be delivered to the 1st light-transmitting substrate and the 2nd light-transmitting substrate effectively by supporting layer.Therefore, the temperature that can suppress polarization plates (polarization layer) rises.
Thereby, according to the manufacture method of optical element of the present invention, can make with existing compare, can be to resulting from that the temperature of polarization layer rises and the optical element that the situation that the polarization characteristic of polarization layer reduces suppresses.
And,, have by the 1st light-transmitting substrate and the 2nd light-transmitting substrate optical element, so can access predetermined physical strength from the structure of two sides clamping polarization layer because can make according to the manufacture method of optical element of the present invention.
Usually, be organic member because be used for the supporting layer of polarization plates, temperature rises easily so pyroconductivity is low.And, by the supporting layer that organic member constitutes, deterioration, molecular orientation disorder under hot and humid condition.Thereby, if having a polarization plates deterioration of the supporting layer that constitutes by organic member, the then transmissivity reduction in the supporting layer, Yin Re and polarization characteristic is reduced significantly.
But, according to the manufacture method of optical element of the present invention, because employing does not have the polarization plates of the supporting layer that polarization layer is supported and make optical element, so also the sort of undesirable condition can not take place.That is, can suppress the reduction of the light transmission in the polarization plates.
And, manufacture method according to optical element of the present invention, because when polarization layer and the 1st light-transmitting substrate are fitted, adopt adhesive, when being fitted, polarization layer and the 2nd light-transmitting substrate adopt bonding agent, so can carry out with comparalive ease that the axle of the polarization axle of the optic axis of the 1st light-transmitting substrate and polarization layer is aimed at and the axle of the polarization axle of the optic axis of the 2nd light-transmitting substrate and polarization layer is aimed at.
In the manufacture method of optical element of the present invention, preferably: between aforementioned the 1st bonding process and aforementioned adhesive applicating operation, also comprise heat treatment step, wherein, the aforementioned polarization layer that fits in aforementioned the 1st light-transmitting substrate by aforementioned adhesive is implemented thermal treatment.
By being method so, because form the contraction of the initial property that the heat by polarization layer causes, so even also can prevent the damage of the polarization layer that causes by thermal stress to the optical element heating of manufacturing by thermal treatment.
In the manufacture method of optical element of the present invention, preferably: in aforementioned the 1st bonding process, make the optic axis of aforementioned the 1st light-transmitting substrate and the polarization axle of aforementioned polarization layer become almost parallel or generally perpendicularly make aforementioned polarization layer and the applying of aforementioned the 1st light-transmitting substrate; In aforementioned the 2nd bonding process, make the optic axis of aforementioned the 2nd light-transmitting substrate and the polarization axle of aforementioned polarization layer become almost parallel or generally perpendicularly make aforementioned polarization layer and the applying of aforementioned the 2nd light-transmitting substrate.
By being method so, the optic axis by suppressing to betide the 1st light-transmitting substrate and the optic axis of the 2nd light-transmitting substrate all become not the undesirable birefringence under the situation with the polarization axle almost parallel of polarization layer or approximate vertical, can make high-quality optical element.
In the manufacture method of optical element of the present invention, preferred: as, to adopt the bonding agent of ultraviolet hardening as aforementioned bonding agent; In aforementioned the 2nd bonding process, comprise ultraviolet irradiation process, wherein, aforementioned bonding agent is solidified to aforementioned bonding agent irradiation ultraviolet radiation.
By being method so, can easily make above-mentioned good optical element.
Description of drawings
Fig. 1 is the figure of the optical element 1 of model utility ground expression embodiment 1.
Fig. 2 represents to be used for the process flow diagram that the manufacture method to the optical element of embodiment 2 describes.
Fig. 3 is that expression is used for the figure that the manufacture method to the optical element of embodiment 2 describes.
Symbol description
1... optical element, 10... polarization plates, 12... polarization layer, 20... the 1st light-transmitting substrate, 30... the 2nd light-transmitting substrate, C... adhesive linkage, D... adhesion layer.
Embodiment
Below, to the manufacture method of optical element of the present invention and optical element, describe based on embodiment shown in the figure.
Embodiment 1
At first, to the formation of the optical element 1 of embodiment 1, utilize Fig. 1 to describe.
Fig. 1 is the figure of the optical element 1 of model utility ground expression embodiment 1.
The optical element 1 of embodiment 1 as shown in FIG. 1, is to possess: polarization plates 10, fit in polarization plates 10 a side the surface the 1st light-transmitting substrate 20 and fit in the opposing party's of polarization plates 10 the optical element of the 2nd light-transmitting substrate 30 on surface.
The 1st light-transmitting substrate 20 and the 2nd light-transmitting substrate 30 for example are made of sapphire.The 1st light-transmitting substrate 20 and the 2nd light-transmitting substrate 30 that constitute by sapphire, not only pyroconductivity is up to about 40W/ (mK), and hardness is also high in the extreme, and coefficient of thermal expansion is little, is difficult to damage and the transparency height.Also have,,, also can adopt light-transmitting substrate by the crystal formation of pyroconductivity with about 10W/ (mK) as the 1st light-transmitting substrate 20 and the 2nd light-transmitting substrate 30 laying particular stress under the situation of cheapness as moderate briliancy.The thickness of the 1st light-transmitting substrate 20 and the 2nd light-transmitting substrate 30 is preferably greater than from the viewpoint of heat conductivity or equals 0.2mm, then preferably is less than or equal to 2.0mm from the viewpoint of the slimming of optical element.
Also have, the 1st light-transmitting substrate 20 and the 2nd light-transmitting substrate 30 all have predetermined optic axis.
As shown in FIG. 1, polarization layer 12 and the 1st light-transmitting substrate 20 are fitted by adhesion layer D, and polarization layer 12 and the 2nd light-transmitting substrate 30 are then fitted by adhesive linkage C.Thus, the generation of the surface reflection at the interface between each member can be suppressed, light transmission can be improved.And, even under the linear expansion coefficient of polarization layer the 12, the 1st light-transmitting substrate 20 and the 2nd light-transmitting substrate 30 situation inequality respectively, also be difficult to cause peeling off of binding face place between each member, can suppress the decline of long-term reliability.
At the 1st light-transmitting substrate 20 and faces polarization plates 10 opposition sides and the 2nd light-transmitting substrate 30 and faces polarization plates 10 opposition sides, form the not shown reflection horizon that prevents.
The optical element 1 of embodiment 1, it is to possess: the polarization plates 10 that constitutes by polarization layer 12, fit in polarization plates 10 polarization layer 12 a side the surface the 1st light-transmitting substrate 20 and fit in the opposing party's the optical element of the 2nd light-transmitting substrate 30 on surface of the polarization layer 12 of polarization plates 10.
Therefore, according to the optical element 1 of embodiment 1, because polarization plates 10 does not have supporting layer, so there is not the generation of the disorder of the molecular orientation in the supporting layer.That is,, do not rise and the polarization characteristic as polarization plates is reduced significantly so can not result from the temperature of polarization plates 10 because there is not the birefringence that causes by the thermal strain in the supporting layer.
And, optical element 1 according to embodiment 1, because possess the polarization plates 10 that constitutes by polarization layer 12, and fit on the two sides of polarization layer 12 the 1st light-transmitting substrate 20 and the 2nd light-transmitting substrate 30, so can make the heat that takes place at polarization layer 12 not be delivered to the 1st light-transmitting substrate 20 and the 2nd light-transmitting substrate 30 effectively by supporting layer.Therefore, the temperature that can suppress polarization plates 10 (polarization layer 12) rises.
Thereby, the optical element 1 of embodiment 1, become with existing compare, can be to resulting from that the temperature of polarization plates 10 rises and long-life optical element that situation that the polarization characteristic of polarization plates is reduced suppresses.
And, according to the optical element 1 of embodiment 1, because have by the 1st light-transmitting substrate 20 and the 2nd light-transmitting substrate 30 structure, so can access predetermined physical strength from two sides clamping polarization layer 12.
Usually, be organic member because be used for the supporting layer of polarization plates, temperature rises easily so pyroconductivity is low.And, by the supporting layer that organic member constitutes, supporting layer deterioration, molecular orientation disorder under hot and humid condition.Thereby, if having a polarization plates deterioration of the supporting layer that constitutes by organic member, the then transmissivity reduction in the supporting layer, Yin Re and polarization characteristic is reduced significantly.
But, according to the optical element 1 of embodiment 1, because polarization plates 10 does not have supporting layer, so also the sort of undesirable condition can not take place.That is, can suppress the reduction of the light transmission in the polarization plates 10.
In the optical element 1 of embodiment 1, the mat woven of fine bamboo strips 1 light-transmitting substrate 20 and the 2nd light-transmitting substrate 30 are made of sapphire.
Because the light-transmitting substrate heat conductivity that is made of sapphire is good in the extreme, so the heat that takes place in polarization plates 10 can be rejected heat to outside the system efficiently, the temperature that can suppress polarization plates 10 effectively rises.
In the optical element 1 of embodiment 1, the 1st light-transmitting substrate 20 and the 2nd light-transmitting substrate 30 are because be made of same material, so can seek the reduction of manufacturing cost.And, because the linear expansion coefficient unanimity, so can reduce the strain that causes by internal stress.
Embodiment 2
Secondly, to the manufacture method of the optical element of embodiment 2, utilize Fig. 2 and Fig. 3 to describe.
Fig. 2 is that expression is used for the process flow diagram that the manufacture method to the optical element of embodiment 2 describes.Fig. 3 is that expression is used for the figure that the manufacture method to the optical element of embodiment 2 describes.
The manufacture method of the optical element of embodiment 2 is the methods that are used to make the optical element 1 of above-mentioned embodiment 1, implements " adhesive working procedure of coating ", " the 1st bonding process ", " adhesive applicating operation ", " the 2nd bonding process " in order.Below, these each operations are described in order.
1. adhesive working procedure of coating
At first, on a side's of the polarization layer 12 of polarization plates 10 surface, apply adhesive (the step S1 of Fig. 2).At this moment, as adhesive, for example, can adopt acrylic compounds adhesive or polyurethanes adhesive etc. suitably.
2. the 1st bonding process
Secondly, make polarization layer 12 and 20 applyings (the step S2 of Fig. 2) of the 1st light-transmitting substrate by adhesive.At this moment, make the optic axis of the 1st light-transmitting substrate 20 and the polarization axle of polarization layer 12 become almost parallel like that, polarization layer 12 and the 1st light-transmitting substrate 20 are fitted (with reference to Fig. 3.)。
At this, to be fitted to the polarization layer 12 of the 1st light-transmitting substrate 20 by adhesive, in the environment of 80 degree～110 degree Celsius, placed 0.5～10 hour, that is, the polarization layer 12 that is fitted to the 1st light-transmitting substrate 20 by adhesive is implemented thermal treatment (annealing in process).
3. adhesive applicating operation
Secondly, adhesive-applying (the step S3 of Fig. 2) around the polarization layer 12 of the opposing party's of the polarization layer 12 of polarization plates 10 surface and polarization plates 10.At this moment, as bonding agent, adopt the bonding agent of ultraviolet hardening.
4. the 2nd bonding process
Then, make polarization layer 12 and 30 applyings (the step S4 of Fig. 2) of the 2nd light-transmitting substrate by bonding agent.At this moment, make the optic axis of the 2nd light-transmitting substrate 30 and the polarization axle of polarization layer 12 become almost parallel like that, polarization layer 12 and the 2nd light-transmitting substrate 30 are fitted (with reference to Fig. 3.)。
If describe particularly, then make the polarization axle of the optic axis of the 2nd light-transmitting substrate 30 and polarization layer 12 become almost parallel ground polarization layer 12 and the 2nd light-transmitting substrate 30 are carried out bonding after, utilize not shown ultraviolet lamp bonding agent to be solidified to the bonding agent irradiation ultraviolet radiation that is coated on polarization layer 12.
By more than, can make the optical element 1 of embodiment 1.
So, the manufacture method of the optical element of embodiment 2 is the methods that are used to make optical element 1, comprises in the following sequence: the adhesive working procedure of coating wherein, applies adhesive on a side's of the polarization layer 12 of polarization plates 10 surface; The 1st bonding process wherein, fits polarization layer 12 and the 1st light-transmitting substrate 20 by adhesive; Heat treatment step wherein, is implemented thermal treatment to the polarization layer 12 that is fitted to the 1st light-transmitting substrate 20 by adhesive; The adhesive applicating operation, wherein, adhesive-applying on the opposing party's of the polarization layer 12 of polarization plates 10 surface; With the 2nd bonding process, wherein, polarization layer 12 and the 2nd light-transmitting substrate 30 are fitted by bonding agent.
Therefore, according to the manufacture method of the optical element of embodiment 2, can easily make the optical element 1 of above-mentioned embodiment 1 accurately.Thereby, can make the optical element of the effect of optical element 1 with above-mentioned embodiment 1.
And, manufacture method according to the optical element of embodiment 2, because when polarization layer 12 and the 1st light-transmitting substrate 20 are fitted, adopt adhesive, when being fitted, polarization layer 12 and the 2nd light-transmitting substrate 30 adopt bonding agent, so can carry out with comparalive ease that the axle of the polarization axle of the optic axis of the 1st light-transmitting substrate 20 and polarization layer 12 is aimed at and the axle of the polarization axle of the optic axis of the 2nd light-transmitting substrate 30 and polarization layer 12 is aimed at.
In the manufacture method of the optical element of embodiment 2, in the 1st bonding process,, polarization layer 12 and the 1st light-transmitting substrate 20 are fitted so that the polarization axle of the optic axis of the 1st light-transmitting substrate 20 and polarization layer 12 becomes the mode of almost parallel; In the 2nd bonding process,, polarization layer 12 and the 2nd light-transmitting substrate 30 are fitted so that the polarization axle of the optic axis of the 2nd light-transmitting substrate 30 and polarization layer 12 becomes the mode of almost parallel.Therefore, the optic axis by suppressing to betide the 1st light-transmitting substrate 20 and the optic axis of the 2nd light-transmitting substrate 30 all become not the undesirable birefringence under the situation with the polarization axle almost parallel of polarization layer 12 or approximate vertical, can make high-quality optical element 1.
In the manufacture method of the optical element of embodiment 2,,, form the contraction of the initial property that the heat by polarization layer 12 causes by the polarization layer 12 that is fitted to the 1st light-transmitting substrate 20 by adhesive is implemented thermal treatments at heat treatment step.Thus, even heating also can prevent the damage of the polarization layer 12 that caused by thermal stress to the optical element after making.
In the manufacture method of the optical element of embodiment 2,, adopt the bonding agent of ultraviolet hardening as bonding agent.And, in the 2nd bonding process, comprising ultraviolet irradiation process, it makes bonding agent solidify to the bonding agent irradiation ultraviolet radiation.Thus, can easily make above-mentioned good optical element 1.
More than, though based on each above-mentioned embodiment and the manufacture method of optical element of the present invention and optical element is illustrated, but the present invention is not limited to above-mentioned embodiment, can in the scope that does not break away from its main idea, in all modes, implement, for example also can be following distortion.
(1) in the optical element 1 of above-mentioned embodiment 1, as the material of the 1st light-transmitting substrate 20 and the 2nd light-transmitting substrate 30, though all adopted sapphire, the present invention is not limited to this.As the material of light-transmitting substrate and other light-transmitting substrate, except sapphire, can also adopt the sintered body of crystal, quartz glass, hard glass, sintered glass ceramics or cube crystalline substance.Under the situation that adopts crystal as the material of light-transmitting substrate and other light-transmitting substrate, can access the effect same with sapphire situation.Under the situation of sintered body as the material of light-transmitting substrate and other light-transmitting substrate of adopting quartz glass, hard glass, sintered glass ceramics or cube crystalline substance, because the birefringence of these materials is less, descend so can suppress the quality of the light beam by light-transmitting substrate.And, because these material heat expansion rates are smaller, so bond to the light-transmitting substrate that constitutes by coefficient of thermal expansion materials with smaller so and other light-transmitting substrate by the polarization plates that will have the elongation that causes by heat, character that distortion is bigger, can suppress the distortion of polarization plates self.Under the situation of sintered body that adopts sintered glass ceramics or cube crystalline substance as the material of light-transmitting substrate and other light-transmitting substrate, bearing of trend by big direction of principal axis of the thermal expansion in the sintered body that makes sintered glass ceramics or cube crystalline substance and polarization plates is consistent, can suppress the distortion of the polarization plates that caused by heat.In addition, as the material of light-transmitting substrate and other light-transmitting substrate, also can adopt other clear glass (for example, blank glass or send lachs (registered trademark) etc.) suitably, YAG polycrystalline, aluminum oxynitride etc.That is, the 1st light-transmitting substrate 20 and the 2nd light-transmitting substrate 30 so long as inorganic material just.Also have, for example can adopt the light transmission sintered glass of YAG as the sintered body of cube crystalline substance.
(2) in the optical element 1 of above-mentioned embodiment 1, though illustration the 1st light-transmitting substrate 20 and the 2nd light-transmitting substrate 30 situation about constituting by identical materials, the present invention is not limited to this.For example, also can be among the 1st light-transmitting substrate 20 and the 2nd light-transmitting substrate 30, a side light-transmitting substrate is made of quartz glass, hard glass and other clear glass, and the opposing party's light-transmitting substrate then is made of sapphire or crystal.
(3) in the manufacture method of the optical element of above-mentioned embodiment 2, though in the 1st bonding process, so that the polarization axle of the optic axis of the 1st light-transmitting substrate 20 and polarization layer 12 becomes the mode of almost parallel, polarization layer 12 and the 1st light-transmitting substrate 20 are fitted, in the 2nd bonding process, so that the polarization axle of the optic axis of the 2nd light-transmitting substrate 30 and polarization layer 12 becomes the mode of almost parallel, polarization layer 12 and the 2nd light-transmitting substrate 30 are fitted, but the present invention is not limited to this, also can be in the 1st bonding process, so that the polarization axle of the optic axis of the 1st light-transmitting substrate 20 and polarization layer 12 becomes the mode of approximate vertical, polarization layer 12 and the 1st light-transmitting substrate 20 are fitted, in the 2nd bonding process, so that the polarization axle of the optic axis of the 2nd light-transmitting substrate 30 and polarization layer 12 becomes the mode of approximate vertical, polarization layer 12 and the 2nd light-transmitting substrate 30 are fitted.
Also have, under the situation that either party of the 1st light-transmitting substrate 20 or the 2nd light-transmitting substrate 30 is made of the material that does not have optic axis, perhaps, under the situation that the 1st light-transmitting substrate 20 and the 2nd light-transmitting substrate 30 all are made of the material that does not have optic axis, light-transmitting substrate by this material that does not have optic axis constitutes can at random attach for polarization layer 12.
(4) in the manufacture method of the optical element of above-mentioned embodiment 2, in the adhesive working procedure of coating, though apply adhesive on a side's of the polarization layer 12 of polarization plates 10 surface, the present invention is not limited to this, can certainly replace adhesive by adhesive-applying.
Claims (10)
1. optical element is characterized in that possessing:
The polarization plates that comprises polarization layer,
Fit in aforementioned polarization plates polarization layer a side the surface the 1st light-transmitting substrate and
Fit in the opposing party's the 2nd light-transmitting substrate on surface of the polarization layer of aforementioned polarization plates;
Aforementioned the 1st light-transmitting substrate and aforementioned the 2nd light-transmitting substrate are made of inorganic material.
2. according to the described optical element of claim 1, it is characterized in that:
At least one side among aforementioned the 1st light-transmitting substrate and aforementioned the 2nd light-transmitting substrate is made of sapphire or crystal.
3. according to the described optical element of claim 1, it is characterized in that:
At least one side among aforementioned the 1st light-transmitting substrate and aforementioned the 2nd light-transmitting substrate is made of quartz glass, hard glass and other clear glass.
4. according to the described optical element of claim 1, it is characterized in that:
At least one side among aforementioned the 1st light-transmitting substrate and aforementioned the 2nd light-transmitting substrate is made of the sintered body of sintered glass ceramics or cube crystalline substance.
5. according to the described optical element of claim 1, it is characterized in that:
At least one side among aforementioned the 1st light-transmitting substrate and aforementioned the 2nd light-transmitting substrate is made of the material with optic axis;
So that, dispose aforementioned the 1st light-transmitting substrate and aforementioned the 2nd light-transmitting substrate for aforementioned polarization layer by aforementioned optic axis and the polarization axle almost parallel of aforementioned polarization layer or the mode of approximate vertical with light-transmitting substrate that material constituted of optic axis.
6. according to any one described optical element in the claim 1～5, it is characterized in that:
Aforementioned the 1st light-transmitting substrate and aforementioned the 2nd light-transmitting substrate are made of same material.
7. the manufacture method of an optical element, it is used to make following optical element, this optical element possesses: comprise the polarization plates of polarization layer and by the 1st light-transmitting substrate that inorganic material constituted and the 2nd light-transmitting substrate with optic axis, this manufacture method is characterised in that, comprises in the following order:
The adhesive working procedure of coating, wherein, to a side's of the polarization layer of aforementioned polarization plates surface applied adhesive;
The 1st bonding process wherein, makes a side's of aforementioned polarization layer surface and aforementioned the 1st light-transmitting substrate fit by aforementioned adhesive;
The adhesive applicating operation, wherein, to the opposing party's of the polarization layer of aforementioned polarization plates surface applied bonding agent; With
The 2nd bonding process wherein, makes the opposing party's of aforementioned polarization layer surface and aforementioned the 2nd light-transmitting substrate fit by aforementioned bonding agent.
8. according to the manufacture method of the described optical element of claim 7, it is characterized in that:
Between aforementioned the 1st bonding process and aforementioned adhesive applicating operation, also comprise heat treatment step, wherein, the aforementioned polarization layer that fits in aforementioned the 1st light-transmitting substrate by aforementioned adhesive is implemented thermal treatment.
9. according to the manufacture method of claim 7 or 8 described optical elements, it is characterized in that:
In aforementioned the 1st bonding process,, aforementioned polarization layer and aforementioned the 1st light-transmitting substrate are fitted so that the polarization axle of the optic axis of aforementioned the 1st light-transmitting substrate and aforementioned polarization layer becomes the mode of almost parallel or approximate vertical;
In aforementioned the 2nd bonding process,, aforementioned polarization layer and aforementioned the 2nd light-transmitting substrate are fitted so that the polarization axle of the optic axis of aforementioned the 2nd light-transmitting substrate and aforementioned polarization layer becomes the mode of almost parallel or approximate vertical.
10. according to the manufacture method of any one described optical element in the claim 7～9, it is characterized in that:
As aforementioned bonding agent, adopt the bonding agent of ultraviolet hardening;
In aforementioned the 2nd bonding process, comprise ultraviolet irradiation process, wherein, aforementioned bonding agent is solidified to aforementioned bonding agent irradiation ultraviolet radiation.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP047881/2006 | 2006-02-24 | ||
| JP2006047881 | 2006-02-24 | ||
| JP121653/2006 | 2006-04-26 |
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| Publication Number | Publication Date |
|---|---|
| CN101025504A true CN101025504A (en) | 2007-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610100548 Pending CN101025504A (en) | 2006-02-24 | 2006-07-03 | Optical device and method for manufacturing the same |
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| Country | Link |
|---|---|
| CN (1) | CN101025504A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112955324A (en) * | 2019-01-11 | 2021-06-11 | 株式会社Lg化学 | Method for producing optical film |
-
2006
- 2006-07-03 CN CN 200610100548 patent/CN101025504A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112955324A (en) * | 2019-01-11 | 2021-06-11 | 株式会社Lg化学 | Method for producing optical film |
| CN112955324B (en) * | 2019-01-11 | 2023-02-24 | 杉金光电(苏州)有限公司 | Method for producing optical film |
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