CN101675363B - Method for manufacturing optical element - Google Patents
Method for manufacturing optical element Download PDFInfo
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- CN101675363B CN101675363B CN2008800144937A CN200880014493A CN101675363B CN 101675363 B CN101675363 B CN 101675363B CN 2008800144937 A CN2008800144937 A CN 2008800144937A CN 200880014493 A CN200880014493 A CN 200880014493A CN 101675363 B CN101675363 B CN 101675363B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/1073—Beam splitting or combining systems characterized by manufacturing or alignment methods
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
- G02B5/045—Prism arrays
Abstract
Assuming m is a natural number of 2 or above, and n is a natural number not larger than m, m parallel plates are laminated and cut and then the cut laminate bodies are piled and cut to form a plurality of optical elements. In the laminating process of parallel plates, a parallel plate having a thickness of a reference value or more and a parallel plate having a thickness below the reference value are selected from among a plurality of ranks and laminated such that the difference between the length of n parallel plates from a cutting reference position and the distance from the cutting reference position to the n-th cutting position, in a direction vertical to the cutting surface of the cut laminated body falls within a predetermined range for any value of n in a predetermined section. With such an arrangement, the part to be cut can be brought close to each cutting position in the process for cutting each cut laminate body, and positional shift of the bonding face can be suppressed for every optical element being obtained.
Description
Technical field
The present invention relates to the manufacturing approach of optical element, wherein,, make the optical element of fitting and forming by a plurality of transparent mediums through the lamination repeatedly and the cut-out of many transparent parallel flats.
Background technology
As the manufacturing approach of the prism that is used for optical take-up apparatus, in the past just like disclosed manufacturing approach in the patent documentation 1.Quote manufacturing process's synoptic diagram 2 (a)～Fig. 2 (e) of manufacturing approach of the present invention; This manufacturing approach is in the past done simple declaration; At first shown in Fig. 2 (a); Implemented the parallel flat 11 of beam split with optics with cementing agent (for example ultraviolet hardening cementing agent) stepped appearance ground many quilts of lamination, formed laminated body 1 with optical thin film.Cut off laminated body 1 with the miter angle degree then.Shown in Fig. 2 (b), form a plurality of lamination dividing bodies 12.
Subsequent shown in Fig. 2 (c), upwards pile up a plurality of lamination dividing bodies 12 once more, fixing through interim joint or accessory plate etc., cut off a plurality of lamination dividing bodies 12 of piling up in vertical direction.Throw off interim junction surface then, then shown in Fig. 2 (d), form a plurality of rhabdions 13 of fitting and forming by 2 transparent mediums.Last shown in Fig. 2 (e), use face to cut off each rhabdion 13 perpendicular to direction of elongate, obtain cuboidal one by one prism 14.Wherein, the disengagement at interim junction surface can be carried out in other steps (for example after the cut-out of Fig. 2 (e)).
This manufacturing approach can also obtain a large amount of prism 14 through a series of manufacturing procedure except can using cheap plate glass (parallel flat 11).That is to say, can enough low costs produce prism 14 in a large number.
Patent documentation 1: the spy opens the 2000-143264 communique
Summary of the invention
The problem that the invention desire solves
But the thickness of each parallel flat 11 has irregularly usually, in the manufacturing approach of patent documentation 1, when each parallel flat 11 of lamination, shows no sign of in the operation shown in Fig. 2 (a) and considers that thickness is irregular.In the operation shown in Fig. 2 (c), be that the tinsel spacing of tinsel saw is can not simply changing and adjust of fixing with the disconnected a plurality of lamination dividing bodies 12 piled up of for example tinsel sawing in addition.Therefore, the thickness of each parallel flat 11 has deflection during a plurality of parallel flat 11 of lamination shown in Fig. 2 (a), and then when the cut-out shown in Fig. 2 (c), the position on 2 transparent mediums (parallel flat 11,11) composition surface 21 occurs departing from tinsel saw two ends.
For example; The words that each parallel flat 11 thickness is thin partially; When cutting off lamination dividing body 12 to the off-position of tinsel aligning low order end with institute's determining deviation; Then in the prism 14 of the prism 14 of the low order end shown in Figure 23 (a) and the high order end shown in Figure 23 (b), the position on each composition surface 21 occurs departing from shown in Figure 23 (a) and Figure 23 (b).On the contrary; The thick partially words of each parallel flat 11 thickness; When cutting off lamination dividing body 12 to the off-position of tinsel aligning low order end with institute's determining deviation; Then in the prism 14 of the prism 14 of the low order end shown in Figure 23 (c) and the high order end shown in Figure 23 (c), the position on each composition surface 21 occurs departing from shown in Figure 23 (c) and Figure 23 (c).The result; Then shown in figure 24 when being applied to prism 14 in the optical take-up apparatus; Light is subjected to displacement through prism 14, promptly incides the optical thin film reflection that the incident light at prism 14 plane of incidence centers forms on composition surface 21, the position deviation exit facet center of emergent light during ejaculation.
That is to say, the manufacturing approach in the above-mentioned patent documentation 1, because lamination does not consider that thickness is irregular when cutting off each parallel flat 11, so the thickness of thicker is thin, each parallel flat 11 maybe be in uneven thicknessly by lamination, cut-out.Like this, departing from appears in the position on composition surface in each prism 14 that finally obtains, and is difficult in each prism 14, guarantee the light displacement accuracy.
The present invention is in order to address the above problem a little; Its purpose is to provide a kind of manufacturing approach of optical element; Wherein when stacking irregular each parallel flat of thickness; Through to some time of stacked systemization, the position deviation on the composition surface of the optical element that suppresses finally to obtain can be guaranteed the light displacement accuracy in each optical element.
With the means that solve problem
The manufacturing approach of optical element of the present invention comprises following each operation: the 1st operation is that natural number, n more than 2 is the natural number below the m with m, and m opens the parallel flat that is made up of transparent medium through the cementing agent lamination, forms laminated body; The 2nd operation, with fixed angle of inclination with fixed spacing cut off laminated body, form a plurality of lamination dividing bodies; The 3rd operation, pile up a plurality of lamination dividing bodies with fixed spacing cut off, form a plurality of optical elements of fitting and forming by transparent medium; The optical element manufacturing approach is characterised in that,
Be divided into a plurality of said parallel flats before a plurality of ranks after the operation in the difference of the thickness of corresponding said parallel flat and reference value; Selection belong to thickness more than the said reference value or greater than other said parallel flat of level of said reference value with belong to thickness less than said reference value or other said parallel flat of the level below the said reference value; Make in said the 1st operation no matter what value n gets in deciding interval; On the vertical direction of the lamination dividing body section of the 3rd operation; The length of opening branch from the parallel flat n that cuts off the reference position, poor with distance from said cut-out reference position to n off-position is all in deciding scope.
In the manufacturing approach of optical element of the present invention; Each rank is by round values on the correspondence; This round values is the maximal value of the parallel flat thickness of allowing from each rank or the dull successively round values that reduces or increase of a big side of minimum value; And above-mentioned round values thickness more than the reference value or greater than the rank under the parallel flat of reference value, with thickness less than the rank is-symbol under reference value or the parallel flat below reference value when opposite; Can select parallel flat to carry out lamination from each rank; Which make in above-mentioned the 1st operation by the pairing integer-valued accumulated value of deciding in the interval of each parallel flat of lamination, no matter get the accumulated value till the parallel flat, all in deciding scope.
In the manufacturing approach of optical element of the present invention; Each rank is by round values on the correspondence; This round values is the maximal value of the parallel flat thickness of allowing from each rank or the dull successively round values that reduces or increase of a big side of minimum value; And above-mentioned round values thickness more than the reference value or greater than the rank under the parallel flat of reference value, with thickness less than the rank is-symbol under reference value or the parallel flat below reference value when opposite; Can select parallel flat to carry out lamination from each rank; Make in above-mentioned the 1st operation by continuous lamination decide the pairing integer-valued mean value of each rank under the parallel flat of number, by continuous lamination decide number parallel flat decide each various combination in interval, all in deciding scope.
In the manufacturing approach of optical element of the present invention; Can carry out integer-valued correspondence as follows: at thickness more than reference value or in greater than a plurality of ranks under the parallel flat of reference value; By the minimum value of the thickness of the parallel flat of being allowed for minimum rank by the 1st round values on the correspondence (for example 1); And other ranks be the parallel flat of being allowed from each rank thickness minimum value a little side successively, (for example 2,3, be by identical on the correspondence and its absolute value respectively from each round values that increases with institute's definite value of the 1st integer-valued absolute value with the 1st round values symbol ...); Thickness less than a plurality of ranks under reference value or the parallel flat below reference value in; By the minimum value of the thickness of the parallel flat of being allowed for maximum rank by the 2nd round valuess (for example-1) different on the correspondence with the 1st round values absolute value; And other ranks be the parallel flat of being allowed from each rank thickness minimum value a big side successively, (for example-2 ,-3, be by identical its absolute value with the 2nd round values symbol on the correspondence respectively from each round values that increases with institute's definite value of the 2nd integer-valued absolute value ...).
In the manufacturing approach of optical element of the present invention; Each rank is by round values on the correspondence, and this round values is the maximal value of the parallel flat thickness of allowing from each rank or the dull successively round values that reduces or increase of a big side of minimum value, and; Relevant thickness in reference value to the rank of decide under the parallel flat in the scope; Above-mentioned round values is 0, in the rank in this rank outside, when thickness greater than the rank under the parallel flat of reference value and thickness during less than the opposite round values of the rank is-symbol under the parallel flat of reference value; Can select parallel flat to carry out lamination from each rank; Which make in above-mentioned the 1st operation by the pairing integer-valued accumulated value of deciding in the interval of each parallel flat of lamination, no matter get the accumulated value till the parallel flat, all in deciding scope.
In the manufacturing approach of optical element of the present invention; Each rank is by round values on the correspondence; This round values is the maximal value of the parallel flat thickness of allowing from each rank or the dull successively round values that reduces or increase of a big side of minimum value; And, the rank of relevant thickness under the parallel flat of reference value to decide in the scope, above-mentioned round values is 0; In the rank in this rank outside; During less than the opposite round values of the rank is-symbol under the parallel flat of reference value, can select parallel flat carry out lamination greater than the rank under the parallel flat of reference value and thickness when thickness from each rank, make in above-mentioned the 1st operation by continuous lamination decide the pairing integer-valued mean value of each rank under the parallel flat of number; By continuous lamination decide number parallel flat decide each different combinations in interval, all in deciding scope.
In the manufacturing approach of optical element of the present invention; Can carry out integer-valued correspondence as follows: the rank in the rank outside of round values 0; Wherein, Thickness greater than a plurality of ranks under the parallel flat of reference value in; By the parallel flat thickness minimum value of being allowed for minimum rank by the 1st round values on the correspondence (for example 1), and other ranks be the parallel flat of being allowed from each rank thickness minimum value a little side successively, respectively (for example 2,3, be by identical on the correspondence and its absolute value respectively with round values of institute's definite value increase from the 1st integer-valued absolute value with the 1st round values symbol ...); The rank in the rank outside of round values 0; Wherein, Thickness less than a plurality of ranks under the parallel flat of reference value in; By the minimum value of the thickness of the parallel flat of being allowed for maximum rank by the 2nd round valuess (for example-1) different on the correspondence with the 1st round values absolute value; And other ranks be the parallel flat of being allowed from each rank thickness minimum value a big side successively, (for example-2 ,-3, be by identical on the correspondence and its absolute value respectively from each round values that increases with institute's definite value of the 2nd integer-valued absolute value with the 2nd round values symbol ...).
In the manufacturing approach of optical element of the present invention, in above-mentioned the 1st operation, can be each other alternately lamination belong to other parallel flat of level of round values symbol difference.
In the manufacturing approach of optical element of the present invention, in above-mentioned the 1st operation, can be each other alternately lamination belong to other parallel flat of the identical level of round values absolute value.
In the manufacturing approach of optical element of the present invention, when m is even number, in above-mentioned the 1st operation, can each identical number of lamination to belong to the round values symbol be positive other parallel flat of level with belong to the round values symbol is negative other parallel flat of level.
In the manufacturing approach of optical element of the present invention; When m is odd number; In above-mentioned the 1st operation; Can each identical number of lamination to belong to the round values symbol be positive other parallel flat of level with belong to the round values symbol is negative other parallel flat of level, the lamination odd number opens that to belong to round values be other parallel flat of level of 0 simultaneously.
In the manufacturing approach of optical element of the present invention, the cut-out reference position when cutting off a plurality of lamination dividing body with institute's determining deviation in preferred above-mentioned the 3rd operation is on each lamination dividing body, to get the central authorities of the direction of cutting off spacing or the position of central authorities slightly.
The manufacturing approach of optical element of the present invention also can further have the 4th operation that forms optical thin film on each parallel flat surface.But above-mentioned the 4th operation was carried out before above-mentioned the 1st operation.
The manufacturing approach of optical element of the present invention can also further have the 5th operation that at least one face that when the 2nd operation is cut off, becomes section on each lamination dividing body is ground.But above-mentioned the 5th operation was carried out before above-mentioned the 3rd operation.
In the manufacturing approach of optical element of the present invention, also can be after above-mentioned the 3rd operation to be piled up a plurality of lamination dividing bodies and is cut off with institute's determining deviation, at least one face that becomes section when cutting off grinds.
The effect of invention
According to the present invention; From be divided into belong to thickness more than reference value or greater than other parallel flat of level of reference value with belong to thickness less than grade other parallel flat more than reference value or other parallel flat of the level below the reference value; Lamination is carried out in selection; Make in the 1st operation no matter n gets institute decide what interior value of interval (for example during m=11; No matter n gets what value in interval such as 1～11,2～10), on the vertical direction of the lamination dividing body section of the 3rd operation, the length of opening branch from the parallel flat n of cut-out reference position; With said cut-out reference position poor to the distance of n off-position, in deciding scope (for example in the position deviation specification on composition surface).As the mode of this lamination, the former parallel flat and latter's parallel flat of alternative stacked for example arranged, or the former parallel flat of number that lamination is decided continuously, again latter's parallel flat of number that lamination is decided etc. above that.
Parallel flat through from a plurality of ranks, selecting to be divided into 2 big types carries out lamination, like this in the 3rd operation, can be at the position that each lamination dividing body must be cut off respectively near the state of the off-position of institute's determining deviation each lamination dividing body of cut-out down.Its result can suppress with institute's determining deviation cut the position deviation on composition surface of each optical element.
When for example being applied in the optical take-up apparatus by the optical element of manufacturing approach manufacturing of the present invention; Be on the composition surface of a transparent medium, to form optical thin film (for example polarization separating film), the positional precision on composition surface directly influence incides light that optical element is reflected at the optical thin film light displacement accuracy at its direct of travel (optical axis direction) vertical direction top offset.Therefore, according to the manufacturing approach of the invention described above that can suppress the composition surface position deviation, can easily guarantee the light displacement accuracy of resulting each optical element.
Description of drawings
Fig. 1: each process flow synoptic diagram of the optical element manufacturing approach of an embodiment of the present invention.
Fig. 2: the manufacturing process's explanation synoptic diagram that (a)～(e) is above-mentioned manufacturing approach.
Fig. 3: the grade classification of a plurality of parallel flats and to the corresponding example explanation synoptic diagram of round valuess at different levels.
Fig. 4: the relation explanation synoptic diagram of the off-position of the position on the composition surface of 2 transparent mediums and tinsel saw.
The analog result explanation synoptic diagram of Fig. 5: embodiment 1.
The analog result explanation synoptic diagram of Fig. 6: embodiment 2.
The analog result explanation synoptic diagram of Fig. 7: embodiment 3.
The analog result explanation synoptic diagram of Fig. 8: embodiment 4.
The analog result explanation synoptic diagram of Fig. 9: embodiment 5.
Figure 10: the grade classification of a plurality of parallel flats and to another corresponding example explanation synoptic diagram of round valuess at different levels.
The analog result explanation synoptic diagram of Figure 11: embodiment 6.
The analog result explanation synoptic diagram of Figure 12: embodiment 7.
The analog result explanation synoptic diagram of Figure 13: embodiment 8.
The analog result explanation synoptic diagram of Figure 14: embodiment 9.
The analog result explanation synoptic diagram of Figure 15: embodiment 10.
The analog result explanation synoptic diagram of Figure 16: embodiment 11.
The analog result explanation synoptic diagram of Figure 17: embodiment 12.
The analog result explanation synoptic diagram of Figure 18: embodiment 13.
Figure 19: the grade classification of a plurality of parallel flats and to the corresponding another example explanation synoptic diagram of round valuess at different levels.
Figure 20: the grade classification of a plurality of parallel flats and to the corresponding another example explanation synoptic diagram of round valuess at different levels.
Figure 21: the grade classification of a plurality of parallel flats and to the corresponding another example explanation synoptic diagram of round valuess at different levels.
Figure 22: the grade classification of a plurality of parallel flats and to the corresponding another example explanation synoptic diagram of round valuess at different levels.
Figure 23: (a) and (b) reach (c), (d) is the synoptic diagram that position deviation example in composition surface in the prism is described respectively.
Figure 24: the position deviation on composition surface causes the explanation pattern diagram of light displacement.
Symbol description
1 laminated body
11 parallel flats
12 lamination dividing bodies
14 prisms (optical element)
Embodiment
Following with reference to accompanying drawing, an embodiment of the present invention is described.
1. the process of manufacturing approach
With reference to Fig. 1 and Fig. 2 (a)～Fig. 2 (e), roughly passing through of optical element manufacturing approach of the present invention is described.
As shown in Figure 2, at first form optical thin film (S1: film forms operation, the 4th operation) on the parallel flat that constitutes by transparent medium (for example glass) 11 surfaces.The polarization separating film that can make this optical thin film incident light seen through or reflect for for example corresponding polarization of incident light state.Subsequent, be a plurality of parallel flat 11 laminations stepped through the 1st cementing agent (for example uv curable binder) with light transmission, form laminated body 1 (S2: lamination procedure, the 1st operation).The narration in detail in the back of relevant S2 lamination procedure.
Subsequent; With formed the face of optical thin film in the opposing parallel dull and stereotyped 11 or be coated with cementing agent face institute constant inclination oblique angle (for example 45 degree) and fixed spacing; Cut off above-mentioned laminated body 1, form a plurality of lamination dividing bodies 12 (S3: cut off operation, the 2nd operation) shown in Fig. 2 (b) thus.Then at least one face (one side at least of pros and cons) that when S3 cuts off, becomes section on each lamination dividing body 12 is ground (S4: grinding step, the 5th operation).
Subsequent shown in Fig. 2 (c), pile up a plurality of lamination dividing bodies 12 (S5: lamination procedure, the 3rd operation) once more, to its with fixed spacing cut off (S6: cut off operation, the 3rd operation) in vertical direction.And engage a plurality of lamination dividing bodies 12 or be fixed on the accessory plate etc. in that S5 is interim with the 2nd cementing agent.The cut-out spacing of S6 is following: can have 1 a plurality of transparent mediums fitting part (composition surface 21) also can be arranged in 1 of the optical element that finally obtains.Afterwards at least one face (one side at least of pros and cons) that when S6 cuts off, becomes section is ground (S7: grinding step, the 3rd operation).
Throw off interim junction surface (fixing of dissolving of the 2nd cementing agent or releasing accessory plate etc.) then, shown in Fig. 2 (d), form a plurality of clavas 13 (S8: interim junction surface disengagement operation, the 3rd operation) that transparent medium is fitted and formed.The disengagement at interim junction surface also can be carried out after the S9 below.Last shown in Fig. 2 (e), use face to cut off each clava 13 with institute's determining deviation perpendicular to direction of elongate, thus,, obtain a plurality of cube shaped prisms 14 (S9: cut off operation, the 3rd operation) as the optical element of fitting and forming by a plurality of transparent mediums.
According to above-mentioned manufacturing approach,, can access a large amount of prism 14 through a succession of manufacturing procedure of each operation such as lamination, cut-out, grinding repeatedly.In addition can also be before the lamination procedure of S2, form optical thin films on each parallel flat 11 surface, thus,, obtain holding the prism 14 of the optical property of above-mentioned optical thin film as the final optical element that obtains through above-mentioned each operation.Especially be polarization separating film through making above-mentioned optical thin film, like this can be with the polarization separation element of the prism that finally obtains 14 as optical take-up apparatus.Above-mentioned optical thin film can be to see through or the film of reflecting incident light corresponding to the wavelength selectivity ground of incident light, also can be that to make ratio through light quantity and reflection light quantity be 1 to 1 optical thin film.
The grinding step of S4 is to grind cutting off at least one face that becomes section when operation is cut off the 3rd on each lamination dividing body 12.The grinding step of same S7 also is to piling up and cut off after a plurality of lamination dividing bodies 12 with institute's determining deviation, and at least one face that when cutting off, becomes section grinds.Though as for being that section but the face that do not use as the optical surface of optical element might not need to grind.
2.S2 in detail
The detailed of lamination procedure to above-mentioned S2 explained.Here be that natural number, n more than 2 is the natural number below the m with m, dull and stereotyped at S2 lamination m Zhang Ping row, form laminated body 1.
Be divided into a plurality of ranks from difference according to thickness and reference value; Select the parallel flat 11 of thickness more than reference value and thickness to carry out lamination less than the parallel flat 11 of reference value; Make in S2 no matter what value n gets in deciding interval, on the vertical direction of the section of S6 lamination dividing body 12, the length of opening branch from the n of the parallel flat 11 of cut-out reference position; With above-mentioned cut-out reference position poor to the distance of n off-position, in deciding scope.Below, through the object lesson of this stacked system of concrete example 1,2 explanations.
Explanation calls parallel flat 11a to the parallel flat 11 of thickness more than reference value again below for ease, calls parallel flat 11b to thickness less than the parallel flat 11 of reference value.In this definition, the parallel flat 11 that thickness equals reference value is parallel flat 11a, but also can be included into parallel flat 11b.That is to say, also can be thickness greater than the parallel flat 11 of reference value as parallel flat 11a, the parallel flat 11 of thickness below reference value as parallel flat 11b.
2-1. concrete example 1
In the concrete example 1 following situation is described: the differentiation number (number of levels) when distinguishing parallel flat 11 according to the difference of thickness and reference value is 4, from these 4 ranks, selects parallel flat 11a11b to carry out lamination.
As shown in Figure 3 in the concrete example 1, when making physical dimension and being the square finished product of 4mm (prism 14), be 2.828mm with the thickness reference value of the parallel flat 11 that adopted, be the boundary with this reference value, be divided into 4 ranks to each parallel flat 11.With size distinctions at different levels (maximal value of the thickness of the parallel flat 11 that each rank is allowed and minimum value poor) is 0.01mm, is 0.05mm with the position deviation specification (precision) on desired composition surface 21.The position deviation specification on composition surface 21; Corresponding to the light displacement accuracy in the optical take-up apparatus (this value representation incides optical thin film reflection that the light at prism 14 plane of incidence centers forms, when penetrating, penetrates what (absolute values) at the position deviation exit facet center of light on composition surface 21).
So the difference that a plurality of parallel flats 11 are assigned to thickness and reference value in the concrete example 1 according to each thickness more than-0.02-0.01 less than ,-more than 0.01 0.00 less than, more than 0.00+0.01 less than ,+more than 0.01+0.02 less than 4 levels other certain among.The parallel flat 11 of minimum value of getting the difference of thickness and reference value in each rank also can be put in the next rank.That is to say, the difference that a plurality of parallel flats 11 can be assigned to thickness and reference value according to each thickness greater than-0.02 smaller or equal to-0.01, greater than-0.01 smaller or equal to 0.00, greater than 0.00 smaller or equal to+0.01, greater than+0.01 smaller or equal among 4 levels of+0.02 other certain.The numerical value unit of the difference of above-mentioned expression thickness and reference value all is mm, below identical.
In the concrete example 1, each rank is the big side of minimum value (or maximal value) of parallel flat 11 thickness of allowing from each rank, successively by the round values that on the correspondence is 2,1 ,-1 ,-2.That is to say that each rank is the big side of minimum value (or maximal value) of the thickness of the parallel flat 11 of allowing from each rank, dullly on the correspondence reduced successively, in the parallel flat 11a round values opposite with parallel flat 11b is-symbol.
In the concrete example 1, each rank also can be the big side of minimum value (or maximal value) of the thickness of the parallel flat 11 of allowing from each rank, successively by the round values that on the correspondence is-2 ,-1,1,2.That is to say that each rank also can be the big side of minimum value (or maximal value) of the thickness of the parallel flat 11 of allowing from each rank, dullly on the correspondence increased successively, in the parallel flat 11a round values opposite with parallel flat 11b is-symbol.
The embodiment of concrete example 1 is described through embodiment 1～5 below.Among the embodiment 1～5 (embodiment 2 exceptions), through simulated experiment, the position deviation on composition surface 21 when evaluation selects 11 Zhang Pings row dull and stereotyped 11 to carry out lamination from each rank altogether.Among the embodiment 2, be 10, carry out identical simulated experiment with the number of lamination parallel flat 11.
As shown in Figure 4; If with the thickness of the parallel flat 11 selected from each rank be t1, t2 ... Then cut off laminated body 1 with the miter angle degree in this embodiment and form a plurality of lamination dividing bodies 12; Then it is piled up once more and vertically cut off, so the length of each optical element does on the section vertical direction of lamination dividing body 12
Therefore, if be L with distance (spacing wiry) between tinsel, so, the difference D1=T1-L through calculating each tinsel off-position, difference D2=(T1+T2)-2L ..., just can estimate the position deviation on optical element composition surface 21.
At this for simple and Convenient Calculation, not consider for example thickness, thickness wiry (thickness), cut-off parts wiry, the means of abrasion of the 1st cementing agent.Replace, to above-mentioned difference D1, D2 ... Absolute value on the composition surface 21 position deviation specification (0.05mm) 80% no problem with being evaluated as of interior (in the absolute value 0.04mm).
Fig. 5～Fig. 9 has shown the analog reslt of embodiment 1～5 respectively.Round values accumulation ∑ A among the figure representes the accumulated value of cut-out reference position (the tinsel incision reference position) beginning of the pairing round values A of rank under each parallel flat 11.Moving average be meant continuous lamination decide the mean value of the pairing round values A of each rank under the parallel flat 11 of number (be as an example with front and back 3) itself here.The value that the thickness of slab of expression parallel flat 11 thickness adopts random function to obtain is so that be random value completely in rank.
Length T among the figure be illustrated on the section vertical direction of S6 lamination dividing body 12 from the length of each parallel flat 11 that cuts off the reference position (above-mentioned T1, T2 ...), integrating ∑ T representes the length (integrating value) of opening branch from the n of the parallel flat 11 that cuts off the reference position.The integrating tinsel is represented from cutting off the distance (nL) of reference position to n off-position apart from ∑ L.Among the embodiment 1～5, cut off the reference position and be in a plurality of off-positions of tinsel incision the position of end.Difference D representes integrating ∑ T and integrating ∑ L poor on each off-position, and ABS-MAX is meant a big value of absolute value in the minimum value (D-MIN) of maximal value (D-MAX) and difference D of difference D.
2-2. concrete example 2
In the concrete example 2 following situation is described: the differentiation number (number of levels) when distinguishing parallel flat 11 according to the difference of thickness and reference value is 5, from these 5 ranks, selects parallel flat 11a11b to carry out lamination.
Shown in figure 10 in the concrete example 2, when making physical dimension and be the square finished product of 4mm, be 2.828mm with the thickness reference value of the parallel flat 11 that adopted, make exist this reference value be central value rank ground, be divided into 5 ranks to each parallel flat 11.With size distinctions at different levels is 0.008mm, is 0.05mm with the position deviation specification (precision) on desired composition surface 21.
So the difference that a plurality of parallel flats 11 are assigned to thickness and reference value in the concrete example 2 according to each thickness more than-0.02-0.012 less than ,-more than 0.012-0.004 less than ,-more than 0.004+0.004 less than ,+more than 0.004+0.012 less than ,+more than 0.012+0.02 less than 5 levels other certain among.The parallel flat 11 of minimum value of getting the difference of thickness and reference value in each rank also can be put in the next rank.That is to say, the difference that a plurality of parallel flats 11 can be assigned to thickness and reference value according to each thickness greater than-0.02 smaller or equal to-0.012, greater than-0.012 smaller or equal to-0.004, greater than-0.004 smaller or equal to+0.004, greater than+0.004 smaller or equal to+0.012, greater than+0.012 smaller or equal among 5 levels of+0.02 other certain.
In the concrete example 2, each rank is the big side of minimum value (or maximal value) of the thickness of the parallel flat 11 of allowing from each rank, successively by the round values that on the correspondence is 2,1,0 ,-1 ,-2.That is to say that each rank is the big side of minimum value (or maximal value) of the thickness of the parallel flat 11 of allowing from each rank, is dull the minimizing by the round values on the correspondence successively.And thickness reference value in deciding scope under the parallel flat 11 of (be here ± 0.004 in) other above-mentioned round valuess of level be 0; In the rank in this rank outside; Thickness is greater than the rank under the parallel flat 11a of reference value; With thickness less than the rank under the parallel flat 11b of reference value, the round values that is-symbol is opposite.
In the concrete example 2, each rank also can be the big side of minimum value (or maximal value) of the thickness of the parallel flat 11 of allowing from each rank, successively by the round values that on the correspondence is-2 ,-1,0,1,2.That is to say, also can be the big side of minimum value (or maximal value) of the thickness of the parallel flat 11 of allowing from each rank, successively by the dull round values that increases on the correspondence.Wherein, Thickness is 0 in reference value to parallel flat 11 affiliated other the above-mentioned round valuess of level in the deciding scope; In the rank in this rank outside; Thickness is greater than the rank under the parallel flat 11a of reference value, with thickness less than the rank under the parallel flat 11b of reference value, the round values that is-symbol is opposite.
The embodiment of concrete examples 2 is described through embodiment 6～13 below.Among the embodiment 6～13 (embodiment 8 exceptions), through simulated experiment, the position deviation on composition surface 21 when evaluation selects 11 Zhang Pings row dull and stereotyped 11 to carry out lamination from each rank altogether.Among the embodiment 8, be 10, carry out identical simulated experiment with the number of lamination parallel flat 11.Figure 11～Figure 18 representes the simulated experiment result of embodiment 6～13 respectively.
Embodiment 7 is shown in figure 12, through simulated experiment, try to achieve make round values be " 1 ", " 1 " alternately, the ABS-MAX when lamination belongs to the parallel flat 11 of appropriate level.ABS-MAX is 0.026 (mm) among the embodiment 7, reach composition surface 21 the position deviation specification 80% with interior target.The random value that changes parallel flat 11 thickness t carries out same simulated experiment, and obtain following result: ABS-MAX this moment, and 21 position deviation specifications 80% are 99% with interior probability on the composition surface.Therefore we can say that like the stacked system of the parallel flat 11 of embodiment 7, the effect that in fact position deviation on the composition surface 21 of each optical element is suppressed in the specification is extremely good.
Embodiment 9 is shown in figure 14, through simulated experiment, try to achieve make round values be " 2 ", " 1 ", " 1 " alternately, the ABS-MAX when lamination belongs to the parallel flat 11 of appropriate level.ABS-MAX is 0.022 (mm) among the embodiment 9, reach composition surface 21 the position deviation specification 80% with interior target.The random value that changes parallel flat 11 thickness t carries out same simulated experiment, and obtain following result: ABS-MAX this moment, and 21 position deviation specifications 80% are 99% with interior probability on the composition surface.Therefore we can say that like the stacked system of the parallel flat 11 of embodiment 9, the effect that in fact position deviation on the composition surface 21 of each optical element is suppressed in the specification is extremely good.
Embodiment 10 is shown in figure 15, through simulated experiment, try to achieve make round values be " 1 ", " 2 ", " 2 ", " 1 " alternately, the ABS-MAX when lamination belongs to the parallel flat 11 of appropriate level.ABS-MAX is 0.021 (mm) among the embodiment 10, reach composition surface 21 the position deviation specification 80% with interior target.The random value that changes parallel flat 11 thickness t carries out same simulated experiment, and obtain following result: ABS-MAX this moment, and 21 position deviation specifications 80% are 98% with interior probability on the composition surface.Therefore we can say that like the stacked system of the parallel flat 11 of embodiment 10, the effect that in fact position deviation on the composition surface 21 of each optical element is suppressed in the specification is extremely good.
Situation about more than explaining; When the lamination procedure of S2; Distinguished many Zhang Pings row dull and stereotyped 11 and to round values on each rank correspondence according to thickness; When not carrying out above-mentioned differentiation with corresponding situation, also can S2 (lamination procedure) before or S1 (film formation operation) before, carry out above-mentioned differentiation operation and corresponding operation.
3. effect
In the laminating method of above-mentioned concrete example 1,2; From a plurality of ranks, select parallel flat 11a11b to carry out lamination; Make no matter what value n gets in decide interval, integrating ∑ T (n of parallel flat 11 opens the length of branch) and integrating tinsel apart from the difference D of ∑ L (distance) from the cut-out reference position to n off-position all in deciding scope.That is to say; Select parallel flat 11a11b to carry out lamination; Any value, dull and stereotyped 11 o'clock n of lamination 10 Zhang Pings row that dull and stereotyped 11 o'clock n of lamination 11 Zhang Pings row are got in 1～11 get any value in 1～10, and difference D is in the position deviation specification 0.05mm on composition surface 21.Dull and stereotyped 11 o'clock of lamination 11 Zhang Pings row, the scope that also can make the desirable value of n is 2～10, the optical element at two ends is discarded.The situation of lamination m Zhang Ping row dull and stereotyped 11 in addition, when stating the center of getting the direction of cutting off spacing after the cut-out reference position of S6 is positioned at, but the scope of n value also can be 1～5.
Through this laminating method, can in the cut-out operation of S6, make each lamination dividing body 12 necessary position that cut off respectively near each off-position of institute's determining deviation, cut off each lamination dividing body 12 at this state.Therefore, can suppress with institute's determining deviation cut the position deviation on each optical element composition surface 21.When the optical element of its result method manufacturing constructed in accordance was applied in the optical take-up apparatus, each optical element that obtains can both be guaranteed the light displacement accuracy.
Especially because from a plurality of ranks, select thickness carrying out lamination less than reference value or the parallel flat 11b below reference value more than the reference value or greater than the parallel flat 11a and the thickness of reference value; So the lamination through these parallel flats 11a11b can make positive dirction or the increase of negative direction of the position deviation on composition surface 21 reduce really, can obtain the effect of above-mentioned inhibition composition surface 21 position deviations really.
The position deviation on the irregular inhibition of the thickness composition surface 21 of each parallel flat 11 can be utilized in addition according to the present invention,, the manufacturing cost of optical element can be reduced so single article tolerance of buying parallel flat 11 is relaxed.
In the above-mentioned in addition concrete example 1; Each rank is by the dull successively round values A that reduces or increase of a big side of the maximal value of parallel flat 11 thickness of allowing from each rank on the correspondence or minimum value; And round values A thickness more than the reference value or greater than the rank under the parallel flat 11a of reference value and thickness less than the rank is-symbol under reference value or the parallel flat 11b below reference value when opposite; Select parallel flat to carry out lamination from each rank, make by each parallel flat 11 pairing round values A of lamination decide interval in the accumulated value (round values accumulation ∑ A) of (for example 1～11) regardless of the accumulated value of getting till what parallel flat 11 all in deciding scope (for example-scope more than 5 below 5 in).Above-mentionedly decide scope as long as wait suitably setting according to the position deviation specification and the amplitude at different levels (size distinction) on the composition surface 21 that for example is asked to.
In the above-mentioned in addition concrete example 2; Each rank is by the dull successively round values A that reduces or increase of a big side of the maximal value of parallel flat 11 thickness of allowing from each rank on the correspondence or minimum value; And relevant thickness be reference value arrive decide the rank under the parallel flat 11 in the scope; Round values A is 0; In the rank in this rank outside; During less than the opposite round values of the rank is-symbol under the parallel flat 11b of reference value, select parallel flat 11 to carry out lamination greater than the rank under the parallel flat 11a of reference value and thickness when thickness from each rank, make by each parallel flat 11 pairing round values A of lamination decide interval in the accumulated value (round values is accumulated ∑ A) of (for example 1～11) regardless of the accumulated value till getting what parallel flat all in deciding scope (for example-scope more than 2 below 2 in).
Through adopting the laminating method of above-mentioned concrete example 1 or 2, can in the cut-out operation of S6, make each lamination dividing body 12 necessary position that cut off respectively near each off-position of institute's determining deviation, cut off each lamination dividing body 12 at this state.Its result can positively suppress with institute's determining deviation cut the position deviation on each optical element composition surface 21, each optical element that obtains can both positively be guaranteed the light displacement accuracy.
In the above-mentioned in addition concrete example 1, because the moving average of round values A (for example-scope more than 1 below 1 in) passing in deciding scope, so the laminating method of concrete example 1 also can show as as follows.Promptly; Each rank is by the dull successively round values A that reduces or increase of a big side of the maximal value of parallel flat 11 thickness of allowing from each rank on the correspondence or minimum value; And round values A thickness more than the reference value or greater than the rank under the parallel flat 11a of reference value and thickness less than the rank is-symbol under reference value or the parallel flat 11b below reference value when opposite; Select parallel flat 11 to carry out lamination from each rank; Make in the lamination procedure of S2 by continuous lamination decide the mean value of the pairing round values A of each rank under the parallel flat 11 of number (for example 3); By continuous lamination decide number parallel flat 11 decide interval in each various combination of (for example 1～11), all in deciding scope.
In the above-mentioned in addition concrete example 2, because the moving average of round values A (for example-scope more than 1 below 1 in) passing in deciding scope, so the laminating method of concrete example 2 also can show as as follows.Promptly; Each rank is by the dull successively round values A that reduces or increase of a big side of the maximal value of parallel flat 11 thickness of allowing from each rank on the correspondence or minimum value; And relevant thickness is decided the affiliated rank of parallel flat 11 in the scope in reference value to institute; Round values A is 0, in the rank in this rank outside, when thickness greater than the rank under the parallel flat 11a of reference value and thickness during less than the opposite round values of the rank is-symbol under the parallel flat 11b of reference value; Select parallel flat 11 to carry out lamination from each rank; Make in the lamination procedure of S2 by continuous lamination decide the mean value of the pairing round values A of each rank under the parallel flat 11 of number (for example 3), by continuous lamination decide number parallel flat 11 decide in the interval each various combination of (for example 1～11), all in deciding scope.
Stacked system like above-mentioned concrete example 1 or 2; Because we can say; Can be at positions that each lamination dividing body 12 must be cut off really respectively near the state of each off-position of institute's determining deviation each lamination dividing body 12 of cut-out down; So we can say, can suppress the position deviation on composition surface 21 really, guarantee the light displacement accuracy easily and really.
In the above-mentioned in addition concrete example 1; In 2 ranks under the parallel flat 11a of thickness more than reference value, by the minimum value of the parallel flat 11a thickness of being allowed for minimum rank (difference of thickness and reference value more than 0.00+0.01 less than rank) corresponding last the 1st round values of quilt (for example 1).Other ranks (difference of thickness and reference value more than+0.01+0.02 less than rank) be the round values (for example 2) that only increases institute's definite value from the 1st integer-valued absolute value by identical on corresponding and its absolute value with the 1st round values symbol.Distinguish number when having a plurality of above-mentioned other ranks more than 4; Other ranks are so long as a little side of the minimum value of the parallel flat 11a thickness of allowing from each rank is that each gets final product with round values that institute's definite value increases from the 1st integer-valued absolute value by identical with the 1st round values symbol on the correspondence and its absolute value successively.
Equally; Thickness is less than in 2 ranks under the parallel flat 11b of reference value, the minimum value of the parallel flat 11b thickness of being allowed for maximum rank (difference of thickness and reference value-0.01 or more+0.00 less than rank) corresponding upward 2nd round values (for example-1) different of quilt with the 1st round values absolute value.Other ranks (difference of thickness and reference value more than-0.02-0.01 less than rank) be the round values (for example-2) that only increases institute's definite value (for example 1) from the 2nd integer-valued absolute value by identical on corresponding and its absolute value with the 2nd round values symbol.Distinguish number when having a plurality of above-mentioned other ranks more than 4; Other ranks are so long as a big side of the minimum value of the parallel flat 11b thickness of allowing from each rank is that each gets final product with round values that institute's definite value increases from the 2nd integer-valued absolute value by identical with the 2nd round values symbol on the correspondence and its absolute value successively.
In the above-mentioned in addition concrete example 2; The rank in the rank of round values 0 outside and thickness greater than a plurality of ranks under the parallel flat 11a of reference value in; By the parallel flat 11a thickness minimum value of being allowed for minimum rank (difference of thickness and reference value more than+0.004+0.012 less than rank) corresponding last the 1st round values of quilt (for example 1), other ranks (difference of thickness and reference value more than+0.012+0.02 less than rank) be the round values (for example 2) that only increases institute's definite value (for example 1) from the 1st integer-valued absolute value by identical on corresponding and its absolute value with the 1st round values symbol.Distinguish number when having a plurality of above-mentioned other ranks more than 5; Other ranks are so long as a little side of the minimum value of the parallel flat 11a thickness of allowing from each rank is that each gets final product with round values that institute's definite value increases from the 1st integer-valued absolute value by identical with the 1st round values symbol on the correspondence and its absolute value successively.
Equally; The rank in the rank of round values 0 outside and thickness less than a plurality of ranks under the parallel flat 11b of reference value in; By the minimum value of the parallel flat 11b thickness of being allowed for maximum rank (difference of thickness and reference value-0.012 or more-0.004 less than rank) corresponding upward 2nd round values (for example-1) different of quilt with the 1st round values absolute value, other ranks (difference of thickness and reference value more than-0.02-0.012 less than rank) be the round values (for example-2) that only increases institute's definite value (for example 1) from the 2nd integer-valued absolute value by identical on corresponding and its absolute value with the 2nd round values symbol.Distinguish number when having a plurality of above-mentioned other ranks more than 5; Other ranks are so long as a big side of the minimum value of the parallel flat 11b thickness of allowing from each rank is that each gets final product with round values that institute's definite value increases from the 2nd integer-valued absolute value by identical with the 2nd round values symbol on the correspondence and its absolute value successively.
Through so being gone up round values by corresponding on each rank, if see thus integer-valuedly put in order, integer-valued symbol and absolute value, just can easily hold the layer-by-layer state of parallel flat 11a11b.Through above-mentioned integer-valued correspondence, can estimate position deviation easily in addition based on the above-mentioned composition surface 21 of round values accumulation ∑ A, integer-valued moving average.
In the above-mentioned in addition concrete example 1; Rank under the parallel flat 11a is by round values positive on the correspondence; Rank under the parallel flat 11b is by round values negative on the correspondence; So,, can judge whether to adopt parallel flat 11a11b both sides to carry out lamination simply at once through whether positive and negative round values being arranged.And in the concrete example 2; When adopting the parallel flat of opening such as odd number 11 to obtain optical element; Through making odd number 1 in opening is other parallel flat 11 of level that belongs to round values 0; Thus, gather together enough belong to round values be positive other parallel flat 11 of level number with belong to the number of round values for negative other parallel flat 11 of level, can balance suppress the position deviation on composition surface 21 well.
Among the embodiment 1,2,5,7,8,10, belong to other parallel flat 11 alternative stacked of level of round values symbol difference.This stacked system has trend to offset the effect of composition surface 21 position deviations, so each optical element that finally obtains can suppress the position deviation on composition surface 21 really.Especially like embodiment 1,2,7,8, belonging to integer-valued absolute value through alternative stacked is identical other parallel flat 11 of level, can obtain above-mentioned effect definitely.
In addition among the embodiment 2,8, be 10 of even number with the number of lamination parallel flat 11, it is positive other parallel flat 11 of level and belong to the round values symbol and be negative other parallel flat 11 of level that each identical number of lamination belongs to the round values symbol.Be even number when opening at the number of the parallel flat 11 of lamination like this, can make the little value of average out to of the position deviation on composition surface 21 as far as possible.In addition; As long as it is other parallel flat 11 of positive level and belong to the round values symbol and be negative other parallel flat 11 of level that alternative stacked for example belongs to the round values symbol, the position deviation on composition surface 21 in each optical element that just can balance suppresses well finally to obtain.
In addition among the embodiment 11,12; With the number of lamination parallel flat 11 11 of even odd number; It is other parallel flat 11 of positive level and belong to the round values symbol and be negative other parallel flat 11 of level that each identical number of lamination belongs to the round values symbol, and to belong to round values be other parallel flat of level of 0 to 1 of lamination simultaneously.Be odd number when opening at the number of the parallel flat 11 of lamination like this, can make the little value of average out to of the position deviation on composition surface 21 as far as possible.Be that to belong to round values be other parallel flat 11 of level of 0 through making odd number 1 in opening in addition; Can gather together enough like this belong to the round values symbol be positive other parallel flat 11 of level number with belong to the number of round values symbol for negative other parallel flat 11 of level; With they laminations alternately, thus can balance suppress the position deviation on composition surface 21 through for example well.The number of the parallel flat 11 of lamination is an odd number when opening, and the number that belongs to round values and be 0 grade of other parallel flat 11 is not limited to 1, also can be the odd number more than 3.
4. about cutting off other examples of reference position
Among above-mentioned each embodiment 1～13; Cut off in the operation cut-out reference position when cutting off a plurality of lamination dividing body 12 at S6 with institute's determining deviation; It is the position of the end of the cut-out spacing direction on each lamination dividing body 12 (vertical direction of section) in a plurality of off-positions; But, also can be for example from the 2nd position of end, also can be central position.
Especially when the number m of lamination parallel flat 11 is odd number, the middle position on the preferably above-mentioned direction, when the number m of lamination parallel flat 11 is even number, the summary middle position on the preferably above-mentioned direction.As long as making each lamination dividing body 12 is certain in the length of above-mentioned direction; The middle position of above-mentioned direction or slightly middle position get the situation when cutting off the reference position; Compare with the situation of getting in an end of above-mentioned direction when cutting off the reference position, can the accumulation in the error (positional offset amount on composition surface 21) of leaving most the end that cuts off the reference position be suppressed at half the (when number is odd number) or slightly half the (when number is even number).The effect of composition surface 21 position deviations of each optical element that thus, suppresses finally to obtain improves.
5. other examples about distinguishing
When being divided into a plurality of differentiation to a plurality of parallel flats 11 according to its thickness; Can be the value for example ± 1/5 of the customer requirement specification of the positional offset amount on composition surface 21, light displacement accuracy; As the maximal value (higher limit) or the minimum value (lower limit) of the difference of thickness and reference value, being divided into a plurality of differentiations between maximal value and the minimum value.
For example Figure 19 is that the customer requirement specification is 0.05mm, to distinguish number be 4, Figure 20 be the customer requirement specification be 0.05mm, when distinguishing number and being 5, the differentiation illustration meaning of a plurality of parallel flats 11.The customer requirement specification is 0.05mm among Figure 19 and Figure 20, with its ± 1/5 value ± 0.010 (mm) is the higher limit and the lower limit of the difference of thickness and reference value, will be divided into a plurality of differentiations therebetween.
Figure 21 is that the customer requirement specification is 0.10mm, to distinguish number be 4 in addition, Figure 22 be the customer requirement specification be 0.10mm, when distinguishing number and being 5, the differentiation illustration meaning of a plurality of parallel flats 11.The customer requirement specification is 0.10mm among Figure 21 and Figure 22, with its ± 1/5 value ± 0.020 (mm) is the higher limit and the lower limit of the difference of thickness and reference value, will be divided into a plurality of differentiations therebetween.
Through selecting parallel flat 11 to carry out lamination each rank of as above distinguishing from quilt; Relatively the positional offset amount on the composition surface 21 of the disconnected position of tinsel sawing the customer requirement specification about 60% or below it; The phenomenon that surpasses the customer requirement specification is considerably less, and this fact is from having gained some understanding with the foregoing description 1～13 identical simulated experiment.
The differentiation number is distinguished about 6 differentiations comparatively appropriate 4, but does not have particular determination.In addition, distinguishing number can be that odd number also can be a plurality of, but during odd number, when parallel flat 11 lamination numbers are many of odd number Zhang Shiwei, can both easily deal with, and this point is more convenient.That is to say that when distinguishing number and being odd number, shown in above-mentioned concrete example 2, through putting into or do not put into the parallel flat 11 of the differentiation (rank of round values 0) in the middle of 1, the lamination number that can deal with parallel flat 11 flexibly is that odd number is opened and two kinds of situation of many.
Claims (15)
1. the manufacturing approach of an optical element comprises following each operation:
The 1st operation is that natural number, n more than 2 is the natural number below the m with m, and m opens the parallel flat that is made up of transparent medium through the cementing agent lamination, forms laminated body;
The 2nd operation, with fixed angle of inclination and fixed spacing cut off laminated body, form a plurality of lamination dividing bodies;
The 3rd operation, pile up a plurality of lamination dividing bodies with fixed spacing cut off in vertical direction, form a plurality of optical elements of fitting and forming by transparent medium;
The optical element manufacturing approach is characterised in that,
After the difference according to the thickness of said parallel flat and reference value is divided into a plurality of said parallel flats a plurality of other operations of level,
Selection belong to thickness more than the said reference value or greater than other said parallel flat of level of said reference value with belong to thickness less than said reference value or other said parallel flat of the level below the said reference value,
Make in said the 1st operation no matter what value n gets in deciding interval; On the vertical direction of the lamination dividing body section of the 3rd operation; From cutting off the reference position to the dull and stereotyped distance of n Zhang Ping row, poor with distance from said cut-out reference position to n off-position is all in deciding scope.
2. like the manufacture method of optical element of record in the claim 1; It is characterized in that; Each rank is by integer value on the correspondence; This integer value is the maximum of the said parallel flat thickness of allowing from each rank or the dull successively integer value that reduces or increase of a big side of minimum of a value; And above-mentioned integer value thickness more than the said a reference value or greater than the rank under the said parallel flat of said a reference value, with thickness less than the rank is-symbol under said a reference value or the said parallel flat below said a reference value when opposite
Select said parallel flat to carry out lamination from said a plurality of ranks; Make in said the 1st operation by the pairing integer-valued accumulated value of deciding in the interval of each said parallel flat of lamination; No matter get the accumulated value till which said parallel flat, all in deciding scope.
3. like the manufacture method of optical element of record in the claim 1; It is characterized in that; Said a plurality of rank is respectively by integer value on the correspondence; This integer value is the maximum of the said parallel flat thickness of allowing from each rank or the dull successively integer value that reduces or increase of a big side of minimum of a value; And above-mentioned integer value thickness more than a reference value or greater than the rank under the said parallel flat of a reference value, with thickness less than the rank is-symbol under a reference value or the said parallel flat below a reference value when opposite
Select said parallel flat to carry out lamination from said a plurality of ranks; Make in said the 1st operation by continuous lamination decide the pairing integer-valued mean value of each rank under the said parallel flat of number; By continuous lamination decide number said parallel flat decide each various combination in interval, all in deciding scope.
4. like the manufacturing approach of optical element of record in claim 2 or the claim 3; It is characterized in that; Carry out integer-valued correspondence as follows: at thickness more than said reference value or in greater than a plurality of ranks under the said parallel flat of said reference value; By the minimum value of the thickness of the said parallel flat of being allowed for minimum rank by the 1st round values on the correspondence; And other ranks be the said parallel flat of being allowed from each rank thickness minimum value a little side successively, be from each round values that increases with institute's definite value of the 1st integer-valued absolute value by identical on the correspondence and its absolute value respectively with the 1st round values symbol;
Thickness less than a plurality of ranks under said reference value or the said parallel flat below said reference value in; By the minimum value of the thickness of the said parallel flat of being allowed for maximum rank by the 2nd different on correspondence round valuess with the 1st round values absolute value; And other ranks be the said parallel flat of being allowed from each rank thickness minimum value a big side successively, be from each round values that increases with institute's definite value of the 2nd integer-valued absolute value by identical its absolute value with the 2nd round values symbol on the correspondence respectively.
5. like the manufacturing approach of optical element of record in the claim 1; It is characterized in that said a plurality of ranks are by round values on the correspondence, this round values is the maximal value of the said parallel flat thickness of allowing from each rank or the dull successively round values that reduces or increase of a big side of minimum value; And; Relevant thickness is decided the rank under the said parallel flat in the scope in reference value to institute, and above-mentioned round values is 0, in this rank rank in addition; When thickness greater than the rank under the said parallel flat of reference value, with thickness during less than the opposite round values of the rank is-symbol under the said parallel flat of reference value
Select said parallel flat to carry out lamination from said a plurality of ranks; Make in said the 1st operation by the pairing integer-valued accumulated value of deciding in the interval of each said parallel flat of lamination; No matter get the accumulated value till which said parallel flat, all in deciding scope.
6. like the manufacturing approach of optical element of record in the claim 1; It is characterized in that said a plurality of ranks are by round values on the correspondence, this round values is the maximal value of the said parallel flat thickness of allowing from each rank or the dull successively round values that reduces or increase of a big side of minimum value; And; The rank of relevant thickness under the said parallel flat of reference value to decide in the scope, above-mentioned round values is 0, in the rank beyond this rank; When thickness greater than the rank under the said parallel flat of reference value, with thickness during less than the opposite round values of the rank is-symbol under the said parallel flat of reference value
Select said parallel flat to carry out lamination from said a plurality of ranks; Make in said the 1st operation by continuous lamination decide the pairing integer-valued mean value of each rank under the said parallel flat of number; By continuous lamination decide number said parallel flat decide each different combinations in interval, all in deciding scope.
7. like the manufacturing approach of optical element of record in claim 5 or the claim 6; It is characterized in that; Carry out integer-valued correspondence as follows: the rank beyond the rank of round values 0; Wherein, thickness greater than a plurality of ranks under the parallel flat of said reference value in, by the said parallel flat thickness minimum value of being allowed for minimum rank by the 1st round values on the correspondence; And other ranks be the said parallel flat of being allowed from each rank thickness minimum value a little side successively, be from each round values that increases with institute's definite value of the 1st integer-valued absolute value by identical on the correspondence and its absolute value respectively with the 1st round values symbol;
Rank beyond the rank of round values 0; Wherein, Thickness less than a plurality of ranks under the said parallel flat of reference value in; By the minimum value of the thickness of the said parallel flat of being allowed for maximum rank by the 2nd different on correspondence round valuess with the 1st round values absolute value; And other ranks be the said parallel flat of being allowed from each rank thickness minimum value a big side successively, be from each round values that increases with institute's definite value of the 2nd integer-valued absolute value by identical on the correspondence and its absolute value respectively with the 2nd round values symbol.
8. like the manufacturing approach of optical element of record in the claim 2 to 3,5 or 6, it is characterized in that, in said the 1st operation each other alternately lamination belong to grade other said parallel flat of round values symbol difference.
9. like the manufacturing approach of the optical element of claim 8 record, it is characterized in that, in above-mentioned the 1st operation each other alternately lamination belong to other said parallel flat of the identical level of round values absolute value.
10. like the manufacturing approach of optical element of record in the claim 2,3,5 or 6; It is characterized in that; When m is even number; In said the 1st operation, the round values symbol that belongs to of each identical number of lamination is that positive other said parallel flat of level is negative other said parallel flat of level with belonging to the round values symbol.
11. manufacturing approach like the optical element of record in claim 5 or 6; It is characterized in that; When m is odd number; In said the 1st operation, each identical number of lamination to belong to the round values symbol be positive other said parallel flat of level with belong to the round values symbol is negative other said parallel flat of level, the lamination odd number opens that to belong to round values be other said parallel flat of level of 0 simultaneously.
12. manufacturing approach like the optical element of record in the claim 1 to 3,5 or 6; It is characterized in that; Cut-out reference position when cutting off a plurality of said lamination dividing body with institute's determining deviation in said the 3rd operation is on each said lamination dividing body, to get the central authorities of the direction of cutting off spacing or the position of central authorities slightly.
13. the manufacturing approach like the optical element of record in the claim 1 to 3,5 or 6 is characterized in that, further has the 4th operation that forms optical thin film on each said parallel flat surface, said the 4th operation was carried out before said the 1st operation.
14. manufacturing approach like the optical element of record in the claim 1 to 3,5 or 6; It is characterized in that; Further have the 5th operation that at least one face that when said the 2nd operation is cut off, becomes section on each said lamination dividing body is ground, said the 5th operation was carried out before said the 3rd operation.
15. manufacturing approach like the optical element of record in the claim 1 to 3,5 or 6; It is characterized in that; After said the 3rd operation was piled up a plurality of said lamination dividing bodies and cut off with institute's determining deviation, at least one face that becomes section when cutting off ground.
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| Application Number | Priority Date | Filing Date | Title |
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| JP122095/2007 | 2007-05-07 | ||
| JP2007122095 | 2007-05-07 | ||
| PCT/JP2008/057674 WO2008139840A1 (en) | 2007-05-07 | 2008-04-21 | Method for manufacturing optical element |
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| CN101675363A CN101675363A (en) | 2010-03-17 |
| CN101675363B true CN101675363B (en) | 2012-04-04 |
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| CN (1) | CN101675363B (en) |
| WO (1) | WO2008139840A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008139840A1 (en) * | 2007-05-07 | 2008-11-20 | Konica Minolta Opto, Inc. | Method for manufacturing optical element |
| WO2010058741A1 (en) * | 2008-11-21 | 2010-05-27 | コニカミノルタオプト株式会社 | Optical element manufacturing method |
| CN103435254A (en) * | 2013-08-27 | 2013-12-11 | 江西合力泰科技股份有限公司 | Cutting process of glass cover plates |
| CN104973770A (en) * | 2015-06-29 | 2015-10-14 | 开平市盈光机电科技有限公司 | Cutting method of thin glass sheet |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4006855B2 (en) * | 1998-10-30 | 2007-11-14 | エプソントヨコム株式会社 | Optical device manufacturing method |
| JP4080265B2 (en) * | 2002-07-11 | 2008-04-23 | Ａｇｃテクノグラス株式会社 | Polarization conversion element and manufacturing method thereof |
| WO2008139840A1 (en) * | 2007-05-07 | 2008-11-20 | Konica Minolta Opto, Inc. | Method for manufacturing optical element |
-
2008
- 2008-04-21 WO PCT/JP2008/057674 patent/WO2008139840A1/en active Application Filing
- 2008-04-21 CN CN2008800144937A patent/CN101675363B/en not_active Expired - Fee Related
- 2008-04-21 JP JP2009514056A patent/JP4471038B2/en not_active Expired - Fee Related
-
2010
- 2010-01-08 JP JP2010002635A patent/JP5170114B2/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| JP特开2000-143264A 2000.05.23 |
| JP特开2004-45767A 2004.02.12 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008139840A1 (en) | 2008-11-20 |
| JP2010140038A (en) | 2010-06-24 |
| CN101675363A (en) | 2010-03-17 |
| JP5170114B2 (en) | 2013-03-27 |
| JP4471038B2 (en) | 2010-06-02 |
| JPWO2008139840A1 (en) | 2010-07-29 |
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