CN104871041A - Layered lens array, production method for layered lens array, and production method for layered lens - Google Patents
Layered lens array, production method for layered lens array, and production method for layered lens Download PDFInfo
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- CN104871041A CN104871041A CN201380066429.4A CN201380066429A CN104871041A CN 104871041 A CN104871041 A CN 104871041A CN 201380066429 A CN201380066429 A CN 201380066429A CN 104871041 A CN104871041 A CN 104871041A
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- lens
- mark
- optical surface
- lens arra
- arra
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0037—Arrays characterized by the distribution or form of lenses
- G02B3/0062—Stacked lens arrays, i.e. refractive surfaces arranged in at least two planes, without structurally separate optical elements in-between
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00009—Production of simple or compound lenses
- B29D11/00278—Lenticular sheets
- B29D11/00298—Producing lens arrays
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0085—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing wafer level optics
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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
- G02B27/32—Fiducial marks and measuring scales within the optical system
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0075—Arrays characterized by non-optical structures, e.g. having integrated holding or alignment means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ophthalmology & Optometry (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Lenses (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Provided is a layered lens array that comprises, as a plurality of lens arrays (10, 20), a first lens array (10) that includes a first lens section (K1) comprising a first mark (U1) on an object-side optical surface (11a) and a second mark (U2) on an image-side optical surface (11b) and a second lens section (K2) that comprises a third mark (U3) on either the object-side optical surface (11a) or the image-side optical surface (11b) and that does not comprise a mark on the other optical surface, and a second lens array (20) that includes a third lens section (K3) that comprises a fourth mark (U4) on either an object-side optical surface (21a) or an image-side optical surface (21b) and that does not comprise a mark on the other optical surface. The third mark (U3) and the fourth mark (U4) substantially overlap at the center of the object side or the image side when viewed from either of these sides.
Description
Technical field
The manufacture method of stacked lens that the present invention relates to the stacked lens arra of stacked more than 2 lens arras, the manufacture method of this stacked lens arra and obtain from this stacked lens arra.
Background technology
In recent years, when lens make, do not adopt the method for grinding, and mostly adopt the mechanography of the transfer printing based on mold shape.As the advantage of mechanography, following aspect can be enumerated: utilize making 1 mould, just can in a large number and produce lens at an easy rate; The aspheric surface, free form surface, array lens etc. that are difficult to be made by grinding also can be produced.When utilizing mechanography shaping, if there is skew between the position of 2 moulds being installed on forming machine, then skew (bias) can be produced between the upper surface of the lens molded and lower surface.For lens, even if there is the situation that small skew also cannot reach the lens peculiarity of expectation.Therefore, in this case, need the position of the mould adjusting forming machine, and need to measure the bias of the lens molded, and feed back to the position of mould.As the technology measured the bias of the lens molded, there is following method, being used in center of rotational symmetry, to process the mould of mark shape molded and shaped to carry out, and the bias of lens is calculated from the upper surface of molded lens and the mark coordinate of lower surface, the i.e. skew (for example, referring to patent documentation 1) of the optical axis of upper surface side optical surface and the optical axis of lower face side optical surface.
Similarly, there is the situation cannot reaching the lens peculiarity of expectation when the center between lens produces skew (bias) in the situation of stacked more than 2 lens.Therefore, the bias between needing lens measures, and to the position feedback between lens.As the technology of the bias measured between lens, there is following method: form mark at the center of rotational symmetry of 2 lens, calculate the bias between lens from respective coordinate, move the mode making coordinate consistent to make lens and carry out adjustment eccentric (for example, referring to patent documentation 2).
Make lens arra by mechanography and stacked multiple lens arra time eccentric assay method in, if use the method for above-mentioned patent documentation 1 and 2, then can produce following problem.When lens arra, owing to having multiple optical surface, so need with the position making the consistent mode of the coordinate of a pair opposed mark adjust mould.Therefore, mark is formed respectively at a pair optical surface of the lens arra molded.When this lens arra is laminated to each other, with the position making the consistent mode of the mark coordinate of 2 lens adjust lens.Now, same optical axis is arranged with 4 marks.Usually, although the bias adjustment between lens is carried out each other in the face that the eccentric sensitivity of lens peculiarity is the highest, but in these cases, be also arranged on optical axis due to unnecessary mark in the adjustment of this bias, so the mark beyond the mark being likely measured to expectation.When being measured the coordinate of mark by image procossing, this risk becomes higher.If measure mistake eccentric, then can produce adjustment number of times increases the problem that the man-hour caused increases, flows out defective products.
Prior art document
Patent documentation
Patent documentation 1:(Japan) special table 2007-519020 publication
Patent documentation 2:(Japan) JP 2006-146043 publication
Summary of the invention
The object of the present invention is to provide stacked lens arra, it can carry out the good bias of precision and measures and adjust and can not be measured to the mark beyond the mark of expectation.
Further, the manufacture method of the stacked lens that the object of the present invention is to provide the manufacture method of above-mentioned stacked lens arra and obtain from this stacked lens arra.
In order to solve above-mentioned problem, stacked lens arra of the present invention is the stacked lens arra of stacked multiple lens arra, each lens arra comprises multiple lens section, at object side and image side, there are the multiple optical surfaces respectively corresponding with multiple lens section, multiple lens arra comprises: the 1st lens arra with the 1st lens section and the 2nd lens section, 1st lens section has the 1st mark at the optical surface of object side and has the 2nd mark at the optical surface of image side, the optical surface of 2nd lens section in the optical surface of object side and the optical surface of image side has the 3rd mark and does not mark at another optical surface, and there is the 2nd lens arra of the 3rd lens section, the optical surface of 3rd lens section in the optical surface of object side and the optical surface of image side has the 4th mark and does not mark at another optical surface, when observing from object side or image side, the center that the 3rd mark and the 4th is marked at both is overlapping in fact.
In concrete mode of the present invention and viewpoint, the 1st to the 4th mark is located on the optical axis of each self-corresponding 1st to the 3rd lens section.
In other viewpoints of the present invention, the 1st lens arra possesses multiple 1st mark and multiple 2nd mark that are located at least 2 positions in the position be separated.Here, the so-called position be separated to refer to than lens section between large position, minimum interval.If the arrangement of such as lens section is regular, then the position of the separation of the integral multiple of the minimum interval between lens section arranges mark.
In the present invention further other viewpoints, multiple lens section is rectangular arrangement, and the 1st mark and the 2nd mark diagonally configure.
In the present invention further other viewpoints, multiple lens section is rectangular arrangement, and the 1st mark and the 2nd mark configure along direction, sideline.
In the present invention further other viewpoints, the 1st lens arra possesses multiple 3rd marks being located at least 2 positions in the position be separated.
In the present invention further other viewpoints, multiple lens arra also comprises the 3rd lens arra, 3rd lens arra comprises the 4th lens section, the optical surface of 4th lens section in the optical surface of object side and the optical surface of image side has the 5th mark and does not mark at another optical surface, when observing from object side or image side, one and the 4th center being marked at both in multiple 3rd mark is overlapping in fact, when observing from object side or image side, in multiple 3rd mark another and the 5th to be marked at both center overlapping in fact.
In the present invention further other viewpoints, the 2nd lens arra possesses multiple 4th marks being located at least 2 positions in the position be separated.
In the present invention further other viewpoints, multiple lens arra also comprises the 3rd lens arra, 3rd lens arra comprises the 4th lens section, the optical surface of 4th lens section in the optical surface of object side and the optical surface of image side has the 5th mark and does not mark at another optical surface, when observing from object side or image side, one and the 3rd center being marked at both in multiple 4th mark is overlapping in fact, when observing from object side or image side, in multiple 4th mark another and the 5th to be marked at both center overlapping in fact.
In the present invention further other viewpoints, the 2nd lens arra comprises the 5th lens section, and the 5th lens section has the 6th mark at the optical surface of object side and has the 7th mark at the optical surface of image side.
For solving above-mentioned problem, the manufacture method of the stacked lens arra of the of the present invention 1st possesses: molding procedure, in this molding procedure, molds lens arra, and lens arra has the multiple optical surfaces corresponding with multiple lens section at object side and image side, lamination process, in this lamination process, carry out stacked at least multiple lens arras molded in molding procedure, in molding procedure, on 1st lens section of the 1st lens arra in multiple lens arra, the 1st mark is formed at the optical surface of object side, optical surface in image side forms the 2nd mark, on the 2nd lens section of the 1st lens arra, an optical surface in the optical surface of object side and the optical surface of image side forms the 3rd mark and does not form mark at another optical surface, on 3rd lens section of the 2nd lens arra in multiple lens arra, an optical surface in the optical surface of object side and the optical surface of image side forms the 4th mark and does not form mark at another optical surface, in lamination process, with mode the stacked 1st and the 2nd lens arra that the center being marked at both from the 3rd mark and the 4th when object side or image side observation is overlapping in fact.
In concrete mode of the present invention or viewpoint, in molding procedure, utilize the 1st mould and the 2nd mould to mold the 1st lens arra, 1st mould has multiple 1st optics transfer surfaces of the optical surface of the object side for molding the 1st lens arra, the 1st optics transfer surface corresponding with the optical surface of the object side of the 1st lens section comprises the 1st marking transfer face marked for the formation of the 1st, 2nd mould has multiple 2nd optics transfer surfaces of the optical surface of the image side for molding the 1st lens arra, the 2nd optics transfer surface corresponding with the optical surface of the image side of the 1st lens section comprises the 2nd marking transfer face marked for the formation of the 2nd, the 3rd optics transfer surface for the formation of the 2nd lens section of the 1st mould, or the 2nd the 4th optics transfer surface for the formation of the 2nd lens section of mould comprise the 3rd marking transfer face of the 3rd mark for the formation of the 2nd lens section.
In other viewpoints of the present invention, by observing the 1st and the 2nd mark of the 1st lens arra, measure the bias of the 1st lens section.
In other viewpoints of the present invention, 1st mould has multiple 1st marking transfer face, 2nd mould has multiple 2nd marking transfer face, in molding procedure, mold the 1st lens arra with multiple 1st lens sections being in separation point position, by observing many group the 1st and the 2nd marks, measure the bias of one group of the 1st lens section be configured on multiple different optical axis.
In other viewpoints of the present invention, in molding procedure, utilize the 3rd mould and the 4th mould to mold the 2nd lens arra, 5th optics transfer surface of the object side optical surface for the formation of the 3rd lens section of the 3rd mould, or the 4th the 6th optics transfer surface of the image side optical surface for the formation of the 3rd lens section of mould comprise the 4th marking transfer face of the 4th mark for the formation of the 3rd lens section, 1st mould or the 2nd mould have multiple 3rd marking transfer face, in molding procedure, mold the 1st lens arra with multiple 1st lens sections being in separation point position, 3rd mould or the 4th mould have multiple 4th marking transfer face, in molding procedure, mold the 2nd lens arra with multiple 3rd lens sections being in separation point position, by observing many group the 3rd and the 4th marks, measure the bias of the 1st and the 2nd lens arra.
For solving above-mentioned problem, the manufacture method of the stacked lens of the of the present invention 2nd possesses: molding procedure, in this molding procedure, molds lens arra, and lens arra has the multiple optical surfaces corresponding with multiple lens section at object side and image side, lamination process, in this lamination process, carry out stacked at least multiple lens arras molded in molding procedure, cut off operation, in this cut-out operation, stacked lens arra stacked in lamination process is cut off singualtion and forms multiple stacked lens, in molding procedure, on 1st lens section of the 1st lens arra in multiple lens arra, the 1st mark is formed at the optical surface of object side, optical surface in image side forms the 2nd mark, on the 2nd lens section of the 1st lens arra, an optical surface in the optical surface of object side and the optical surface of image side forms the 3rd mark and does not form mark at another optical surface, on 3rd lens section of the 2nd lens arra in multiple lens arra, an optical surface in the optical surface of object side and the optical surface of image side forms the 4th mark and does not form mark at another optical surface, when observing from object side or image side, the center that 3rd mark and the 4th is marked at both is overlapping in fact.
Accompanying drawing explanation
Figure 1A is the vertical view of the stacked lens arra of the 1st embodiment, and Figure 1B is that the AA of the stacked lens arra shown in Figure 1A is to looking cut-open view.
Fig. 2 A ~ 2D is the concept map be described the configuration of mark the observe from same direction the 1st and the 2nd.
Fig. 3 A ~ 3C is the cut-open view of the stacked lens of the 1st embodiment.
Fig. 4 is the concept map be described the mould for molding lens arra.
Fig. 5 A ~ 5C is the figure be described the molding procedure in the manufacturing process of stacked lens arra.
Fig. 6 is to the figure that the bias of lens arra during shaping in the manufacturing process of stacked lens arra measures and adjustment operation is described.
Fig. 7 A ~ 7D is the figure be described the lamination process in the manufacturing process of stacked lens arra.
Fig. 8 is to the figure that the bias of lens arra during stacked in the manufacturing process of stacked lens arra measures and adjustment operation is described.
Fig. 9 is the figure be described the cut-out operation in the manufacturing process of stacked lens.
Figure 10 is the figure be described the configuration of the mark in the stacked lens arra of the 2nd embodiment.
Figure 11 A is the vertical view of the stacked lens arra of the 3rd embodiment, and Figure 11 B is that the AA of the stacked lens arra shown in Figure 11 A is to looking cut-open view.
Figure 12 A ~ 12D is the cut-open view of the stacked lens of the 3rd embodiment.
Figure 13 A ~ 13C is the figure that the variation of the configuration of mark to stacked lens arra is described.
Embodiment
(the 1st embodiment)
A) stacked lens arra
With reference to Figure 1A, 1B and 2A ~ 2D, the stacked lens arra of the 1st embodiment of the present invention is described.In addition, Fig. 2 A ~ 2D is to each optical surface 11a, and the 1st on 11b, 21a, 21b is to the 4th, the figure that 6th and the 7th configuration marking U1 ~ U4, U6, U7 is described, for convenience of description, the configuration of the 1st to the 4th, 6th and 7th mark U1 ~ U4, U6, the U7 observed from the 1st optical surface 11a side is shown.
As illustrated by figures 1 a and 1b, stacked lens arra 100 is such as rectangular-shaped, has the 1st lens arra 10, the 2nd lens arra 20 and spacer substrate 40.
1st lens arra 10 is glass systems, the supporting mass 12 having multiple lens section 11 and be connected with multiple lens section 11.1st lens arra 10 is the parts of the tabular being provided with multiple lens shape when observing on a macro scale.
Each lens section 11 is the rectangular arrangement of quadrilateral in profile in the XY face of the 1st lens arra 10.Lens section 11 is biconvex aspherical shape, has the 1st optical surface 11a in the side of the 1st lens arra 10, has the 2nd optical surface 11b at the opposite side of the 1st lens arra 10.1st and the 2nd optical surface 11a, the outer rim of 11b is circular.Supporting mass 12 entirety generally perpendicularly extends relative to axle AX.The thickness of supporting mass 12 is the thickness of degree that can not be damaged when the demoulding of the 1st lens arra 10.Stacked lens arra 100 is being cut off and singualtion and in the stacked lens 200 (with reference to Fig. 3) that formed, supporting mass 12 becomes flange part 212.In addition, the one side in stacked lens arra 100 is object side, and another side is image side.In the present embodiment, the top of Figure 1B can be made to be object side, and below is image side, the below of Figure 1B also can be made to be image side, and top is object side.
At the 1st and the 2nd optical surface 11a of multiple lens section 11, the optical surface of the part in 11b is respectively equipped with eccentric the 1st, 2nd or 3rd mark U1, U2, the U3 measuring and adjust.Particularly, the 1st and the 2nd mark U1, U2 is located at the 1st and the 2nd optical surface 11a of the 1st lens section K1 in lens section 11 respectively, 11b.Further, the 3rd mark U3 is located at the 2nd optical surface 11b being different from the 2nd lens section K2 of the 1st lens section K1 in lens section 11.That is, the 1st and the 2nd mark U1, U2 be located at mark the different lens section of U3 11 from the 3rd optical axis OA on.In addition, mark is not provided with at the 1st optical surface 11a of the 2nd lens section K2.To mark U4 opposed for 3rd mark U3 of the 1st lens arra 10 and the 4th of aftermentioned 2nd lens arra 20.Be located at the 1st on optical axis OA and the 2nd mark U1, U2 or the 3rd and the 4th mark U3, U4 different in the depth of field, if but adjustment focus, single microscope can be utilized to observe respectively.Thus, when the 1st and the 2nd mark U1, U2 or the 3rd and the 4th mark U3, U4 is arranged on same optical axis OA, can observe them in fact simultaneously.
2nd lens arra 20 is roughly the same with the structure of the 1st lens arra 10, suitably omits the description therefore.2nd lens arra 20 is glass systems, the supporting mass 22 having multiple lens section 21 and be connected with multiple lens section 21.Lens section 21 is aspherical shape, has the 1st optical surface 21a in the side of the 2nd lens arra 20, has the 2nd optical surface 21b at the opposite side of the 2nd lens arra 20.1st optical surface 21a has concave shape, and the 2nd optical surface 21b has convex form.In the stacked lens 200 (with reference to Fig. 3) formed being cut off by stacked lens arra 100, supporting mass 22 becomes flange part 222.At the 1st and the 2nd optical surface 21a of multiple lens section 21, the optical surface of a part of 21b is provided with eccentric the 6th, 7th or 4th mark U6, U7, the U4 measuring and adjust.Particularly, the 6th and the 7th mark U6, U7 is located at the 1st and the 2nd optical surface 21a of the 5th lens section K5 in lens section 21 respectively, 21b.Further, the 4th mark U4 is located at the 2nd optical surface 21b being different from the 3rd lens section K3 of the 5th lens section K5 in lens section 21.That is, the 6th and the 7th mark U6, U7 be located at mark the different lens section of U4 21 from the 4th optical axis OA on.In addition, mark is not provided with at the 1st optical surface 21a of the 3rd lens section K3.As already explained, to mark U3 opposed for the 4th mark U4 and the 3rd of the 1st lens arra 10 of the 2nd lens arra 20.That is, the 3rd mark U3 of the 1st lens arra 10 and the 4th mark U4 of the 2nd lens arra 20 is a pair mark.2nd lens arra 20 can be formed by the material identical with the 1st lens arra 10, also can be formed by different materials.
Below, for convenience of description, there is the 1st, 2nd, 6th and 7th mark U1, U2, U6, the U7 that will be located at the object side of 1 lens section 11,21 (the 1st and the 5th lens section K1, K5) and the optical surface of image side and be called separately the 1st to the situation marking M1.And, the optical surface existed in the object side and image side being located at 1 lens section 11,21 (the 2nd and the 3rd lens section K2, K3) (is the 2nd optical surface 11b in the present embodiment, 21b) the 3rd and the 4th mark U3, U4 is called separately the 2nd to the situation marking M2a.
1st to mark M1 be shaping time bias measure and adjustment mark.In the 1st lens arra 10,1st is arranged on the optical surface of a pair i.e. the 1st and the 2nd optical surface 11a of the lens section 11 (the 1st lens section K1) of the part that formation the 1st lens arra 10 comprises to mark M1, on 11b, and across the opposed position of main part.Here, as the 1st to mark M1, the 2nd mark U2 of the 1st mark U1 and the 2nd optical surface 11b of the 1st optical surface 11a becomes a pair mark of the bias for detecting lens section 11 (the 1st lens section K1) self.Further, as shown in Figure 1A, the 1st exists many groups to mark M1 in single 1st lens arra 10, and is located at 2 positions in the position that the diagonal long along measuring point spacing is separated.In the mould for molding aftermentioned lens arra, in position relationship (relative configuration) ballpark situation between each lens section in lens arra, as long as carry out bias to measure and adjustment at least 2 positions, the displacement between 2 lens arras just can be made consistent with rotation.Therefore, possess the multiple 1st to mark M1 by being at least 2 positions in the position be separated, and in the optical surface of whole lens sections, bias can be adjusted efficiently.
By diagonally configuring many groups the 1st to mark M1 (1), M1 (2), can measure the bias of a pair lens section 11 be configured on different optical axis OA and adjust.Thus, the bias not only in each lens section 11, precision can also measure bias between 2 lens sections 11 well.Further, because the distance between measuring point is elongated, so uprise relative to the sensitivity of the rotation offset between lens arra, thus bias can be adjusted accurately.1st is the cylindrical of convex to the shape of mark M1 in the example shown, but also can be that taper shape, semisphere, Elliptical are spherical, one in four prism type etc.Further, the 1st is not limited to convex to mark M1, also can be concavity.Further, can make the 1st identical to the shape of mark M1 in object side with image side, also can be different.In the latter case, measure in order to bias can be carried out, select the shape of following relation to be advisable: when observing from object side or image side when the center overlap of the center of mark of object side and the mark of image side, a side can not be blocked completely by the opposing party.
In addition, the be located at the 2nd lens arra 20 the 1st is with the 1st of the 1st lens arra 10 the to mark the roughly the same configuration of M1, shape etc. to mark M1, therefore suitably omits the description below.In the 2nd lens arra 20,1st is arranged on the optical surface of a pair i.e. the 1st and the 2nd optical surface 21a of the lens section 21 (the 5th lens K5) of the part that formation the 2nd lens arra 20 comprises to mark M1, on 21b, and across the opposed position of main part.Here, as the 1st to mark M1, the 7th mark U7 of the 6th mark U6 and the 2nd optical surface 21b of the 1st optical surface 21a becomes a pair mark of the bias for detecting lens section 21 (the 5th lens section K5) self.
2nd bias when being the 1st and the 2nd lens arra 10,20 stacked to mark M2a measures and the mark of adjustment.One the 2nd a side i.e. the 2nd optical surface 11b of the optical surface of a pair of the lens section 11 (the 2nd lens section K2) of the part that formation the 1st lens arra 10 comprises is located to mark M2a.Further, another the 2nd is located at a side i.e. the 2nd optical surface 21b of the optical surface of a pair of the lens section 21 (the 3rd lens section K3) of the part that formation the 2nd lens arra 20 comprises to mark M2a.That is, at each lens arra 10, in 20, as the mark for detecting the bias between lens arra, the 2nd is only located at the optical surface of object side or the optical surface of image side to mark M2a.Here, as the 2nd to mark M2a, the 3rd mark U3 of the 2nd mark U2 and the 2nd optical surface 21b of the 2nd optical surface 11b is a pair mark for detecting the bias between lens arra.Further, with the 1st to marking in the same manner as M1, the 2nd is located at 2 positions to the position that mark M2a is separated in the diagonal long along measuring point spacing.As shown in Figure 1A, 1B and 2A ~ 2D, the 2nd is located at from the 1st marking the different position of M1 mark M2a.2nd is with the 1st to identical cylindrical of the shape marking M1 to the shape of mark M2a, but also can be to marking the different shape of M1 from the 1st.
Stride across the 2nd between lens arra to mark M2a (1), M2a (2) is located at 2 positions of diagonally separating, therefore, it is possible to by the 1st and the 2nd lens arra 10, the displacement between 20 and the skew of rotation are carried out measuring and adjusting as bias.
Spacer substrate 40 is located between the 1st lens arra 10 and the 2nd lens arra 20.Spacer substrate 40 plays function as the support of stacked lens arra 100, has adjustment the 1st and the 2nd lens arra 10, the effect of the distance between 20.Spacer substrate 40 is the flat parts formed by glass, pottery, resin etc.Spacer substrate 40 forms peristome 41 with the arrangement of each lens section 11,21 correspondence with the 1st and the 2nd lens arra 10,20.
B) stacked lens
Below, with reference to Fig. 3 A ~ 3C, the stacked lens 200 obtained from the stacked lens arra 100 shown in Figure 1A and 1B are described.
Stacked lens 200 have the 1st lens feature 110, the 2nd lens feature 120 and distance piece 140.
1st lens feature 110 is cutting the 1st lens arra 10 and produces, and has lens section 11 and flange part 212.2nd lens feature 120 is cutting the 2nd lens arra 20 and produces, and has lens section 21 and flange part 222.Distance piece 140 is cutting spacer substrate 40 and produces, and has peristome 41 and supporting mass 142.
In the stacked lens 200 cut out from stacked lens arra 100, there are the lens with the 1st to the 4th, 6th and 7th mark U1 ~ U4, U6, U7 and the lens without above-mentioned mark.Namely, stacked lens 200 shown in Fig. 3 A are only at the 1st and the 2nd optical surface 11a, 11b, 21a, 21b have the 1st to mark M1, stacked lens 200 shown in Fig. 3 B are only at the 2nd optical surface 11b, 21b has the 2nd to the stacked lens 200 shown in mark M2a, Fig. 3 C at the 1st and the 2nd optical surface 11a, 11b, 21a, 21b do not mark.
C) manufacture method of stacked lens arra
Below, with reference to Fig. 4 ~ Fig. 6, an example of the manufacture method of the stacked lens arra 100 shown in Fig. 1 is described.
Stacked lens arra 100 is through molding procedure and lamination process produces, and in described molding procedure, molds the 1st and the 2nd lens arra 10,20, in described lamination process, carries out stacked to the mold the 1st and the 2nd lens arra 10,20.
(molding procedure)
In the present embodiment, the mould 70 shown in Fig. 4 is used to mold the 1st and the 2nd lens arra 10,20.As shown in Figure 4, mould 70 possesses the 1st mould 71 and the 2nd mould 72.Each mould 71,72 is the mould of each optical surface for molding lens respectively.As mould, be not limited to metal mould, the mould that also can use the mould of pottery system or be formed by the compound substance of the inorganic material such as metal and pottery.Further, when lens material is resin, except these moulds, the mould of resinous mould or combination resin and glass can also be used.
1st mould (mould) 71 has multiple 1st optics transfer surface 71a and the 1st end face transfer surface 71b in the side opposed with the 2nd mould 72.Each 1st optics transfer surface 71a is the transfer surface of each 1st optical surface 11a for the formation of the 1st lens arra 10, corresponding with the shape of the 1st optical surface 11a.1st optics transfer surface 71a of the part in multiple 1st optics transfer surface 71a is provided with the 1st the 1st marking transfer face 71c to mark M1 (the 1st mark U1) for the formation of the 1st optical surface 11a.The 1st end face transfer surface 71b of the 1st optical surface 11a is the transfer surface of the end face 11c (with reference to Figure 1B) for the formation of the 1st optical surface 11a side in the supporting mass 12 of the 1st lens arra 10, corresponding with the shape of end face 11c.1st mould 71 utilizes drive unit 73 along X-direction, Y direction, Z-direction action.Thus, the 1st mould 71 can carry out position adjustment relative to the 2nd mould 72.
2nd mould (mould) 72 has multiple 2nd optics transfer surface 72a and the 2nd end face transfer surface 72b in the side opposed with the 1st mould 71.Each 2nd optics transfer surface 72a is the transfer surface of each 2nd optical surface 11b for the formation of the 1st lens arra 10, corresponding with the shape of the 2nd optical surface 11b.2nd optics transfer surface 72a of the part in multiple 2nd optics transfer surface 72a be provided with for the formation of the 2nd optical surface 11b the 1st to the 1st marking transfer face 72c of mark M1 (the 2nd mark U2) with for the formation of the 2nd the 2nd marking transfer face 72d to mark M2a (the 3rd mark U3).1st marking transfer face 72c of the 2nd mould 72 is located at the position opposed with the 1st marking transfer face 71c of the 1st mould 71.2nd marking transfer face 72d is located at the position different from the 1st marking transfer face 72c.2nd end face transfer surface 72b is the transfer surface of the end face 11d (with reference to Figure 1B) for the formation of the 2nd optical surface 11b side in the supporting mass 12 of the 1st lens arra 10, corresponding with the shape of end face 11d.
1st and the 2nd mould 71,72 is generally formed by metal material.As metal material, such as, can enumerate iron type materials or iron class alloy, non-iron class alloy etc.As iron type materials, such as, can enumerate hot die steel, cold work die steel, plastic die steel, high speed tool steel, rolled steel for general structure, carbon steels for machine structural purposes, chrome-molybdenum steel, stainless steel.
Below, the forming method of the 1st lens arra 10 is described.
First, as shown in Figure 5A, the melten glass GP using material supply unit 74 to drip appropriate on the 2nd optics transfer surface 72a and the 2nd end face transfer surface 72b of the 2nd mould 72.Next, as shown in Figure 5 B, from top pressing the 1st mould 71 of the 2nd mould 72.1st mould 71 is maintained at the state separating the distance suitable with the thickness of the supporting mass 12 of the 1st lens arra 10 relative to the 2nd mould 72.Next, as shown in Figure 5 B, cool under the state of pressing the 1st mould 71, the melten glass GP be clipped in the middle is solidified.Now, each transfer surface 71a of the 1st and the 2nd mould 71,72,71b, 72a, 72b are transferred on melten glass GP, thus on melten glass GP, form the 1st and the 2nd optical surface 11a, 11b or end face 11c, 11d (with reference to Figure 1B).
Next, as shown in Figure 5 C, from the 1st and the 2nd mould 71,72 by the 1st lens arra 10 demoulding.In the 1st lens arra 10, on the lens section 11 (the 1st lens section K1) of a part, at the 1st and the 2nd optical surface 11a, the two sides of 11b forms the 1st to mark M1, and is formed with the 1st and is formed with the 2nd to mark M2a to the 2nd optical surface 11b of the lens section 11 (the 2nd lens section K2) of the lens section 11 of mark M1 being different from.
The method of 2nd lens arra 20 also with identical with the 1st lens arra 10 is shaping.Although eliminate detailed description, but prepare the 3rd and the 4th mould, and use these the 3rd to carry out shaping with the 4th mould with the operation identical with the 1st lens arra 10, described 3rd and the 4th mould has and the 1st and the 2nd shaping mould 71 for the 1st lens arra 10,72 identical structures, but the shape of the transfer surface of optical surface is different with the configuration in marking transfer face.
Next, the bias of the 1st lens arra 10 molded is measured.The bias of the 1st lens arra 10 measures and uses the eccentric determinator 80 shown in Fig. 6 to carry out.As shown in Figure 6, eccentric determinator 80 possesses: the fulcrum arrangement 81 of supporting the 1st lens arra 10; Observe the finder 82 of the 1st lens arra 10 optically; Control the control device 83 of each device 81,82.
Fulcrum arrangement 81 has: the support 81a of supporting the 1st the lens arra 10 and drive division 81b of driving support 81a.Support 81a can make the 1st lens arra 10 along the end face 11c with the 1st lens arra 10 by the action of drive division 81b, the X-direction that 11d is parallel and Y direction and with end face 11c, the Z-direction that 11d is vertical moves, further, support 81a also can rotate along the θ direction taking Z axis as turning axle.
Finder 82 possesses microscope 82a, CCD (charge coupled cell Charged CoupledDevice) camera 82b and display 82c.Microscope 82a in finder 82 to the illumination light of the 1st lens arra 10 radiation source SP, and utilizes imaging len LL to carry out imaging.CCD camera 82b obtains the image utilizing microscope 82a to obtain.Display 82c shows the image utilizing CCD camera 82b to obtain.In addition, irradiate (indirect illumination) illumination light from the 2nd optical surface 11b side in the example shown, but also can irradiate (transillumination) illumination light from the 1st optical surface 11a side.
As illumination light, the light of spectrum that go out from the various light source radiation such as LED or incandescent lamp, visible light region can be used, such as white light, blue light, green light, the light such as red light.Further, when by when preventing reflectance coating to be located on lens, if use the light of the wavelength region may that luminance factor is higher as illumination light, be then favourable to the differentiation of mark.Such as, when the light by preventing viewing area reflection prevent reflectance coating to be located on lens, use and be advisable as illumination light close to ultrared red light.
Control device 83 has: control the control part 83a of the action of each device 81,82 and calculate the 1st calculation unit 83b of coordinate to mark M1.Calculation unit 83b calculates the 1st to the coordinate marking M1 from the image utilizing the CCD camera 82b of finder 82 to obtain.In the picture, the 1st to marking M1 with the 1st and the 2nd optical surface 11a than surrounding, and the mode that 11b is bright or dark shows.Here, on 1st optical surface 11a the 1st cannot focus because of the relation of the depth of field etc. of imaging len to mark M1 to the 1st on mark M1 and the 2nd optical surface 11b in same image, therefore from the 1st and the 2nd optical surface 11a, 11b image separately calculates the 1st respectively to the coordinate marking M1.Coordinate is calculated by such as threshold process.
The bias of the 1st lens arra 10 measures carries out the coordinate difference of the 1st on the 2nd optical surface 11b on the same optical axis OA of mark M1 and the 1st optical surface 11a to mark M1 by obtaining the 1st on the 1st optical surface 11a.In the present embodiment, the 1st is located at is positioned at the 1st on the optical axis OA of lens section 11 and the 2nd optical surface 11a, the summit of 11b to mark M1, and therefore the eccentric reference axis measured is optical axis OA.A pair the 1st to 2 positions being located at the 1st lens arra 10 bias mensuration is carried out to mark M1.First, utilize the microscope 82a of finder 82 to make focus to the 1st on the 1st optical surface 11a to mark M1, and utilize the calculation unit 83b of control device 83 to calculate the 1st to the coordinate marking M1 from the image that the CCD camera 82b by finder 82 obtains.Next, utilize microscope 82a make focal position along optical axis OA direction skew, and make focus to the 1st on the 2nd optical surface 11b to mark M1, utilize calculation unit 83b from the image obtained by CCD camera 82b calculate the 1st to mark M1 coordinate.Using the 1st arbitrary a bit as coordinate of mark in mark M1, but can haveing nothing to do to shape mark M1 with the 1st, when calculating the coordinate time of center of obtained marking image, is favourable in precision with calculating in easiness.When the 1st is fully little to mark M1, also mark self can be seen that the center of marking measures.Next, calculation unit 83b is utilized to calculate the coordinate difference of both (the 1st to the center etc. marking M1).If do not have coordinate difference, being do not have eccentric state, if there is coordinate difference, is that optical axis OA has eccentric state from original light shaft offset.Here, if bias or coordinate difference are in allowed band, then can regard as from the 1st of object side when object side or image side observation overlapping in fact to marking the center of M1 and the 1st of the image side center to mark M1.After the bias mensuration of the lens section 11 (the 1st lens section K1) at end the 1st position, the support 81a of fulcrum arrangement 81 is moved along X-axis or Y direction, the bias of carrying out the lens section 11 (the 1st lens section K1) at the 2nd position measures.By the 1st of 2 positions in the 1st lens arra 10, the bias of mark M1 is measured, the configuration error in lens arra can be determined.
Bias when shaping when having coordinate difference, adjusting relative to the position of the 2nd mould 72 the 1st mould 71 of mould 70, and again carrying out molding procedure in measuring.Repeatedly carry out molding procedure measure with eccentric and adjust operation, until in fact elimination 2 positions lens section 11 the 1st to the coordinate difference (coordinate difference be 0 or within the scope of permissible error) marking M1.By like this, after substantially eliminating coordinate difference, the lens arra of the bias of the optical surface essentially eliminating object side and image side can be produced one by one.In addition, the result be not limited to bias measures is fed back to mould, also can utilize in the removal of defective products.
2nd lens arra 20 also carries out bias with the method identical with the 1st lens arra 10 and measures.
(lamination process)
Below, with reference to Fig. 7 and Fig. 8, the laminating method of the 1st and the 2nd lens arra 10,20 is described.Carry out measuring the operation identical with adjusting operation with above-mentioned bias in lamination process.
First, as shown in Figure 7 A, to the end face 11d of a 1st lens arra 10 or end face coating sticker G1 of spacer substrate 40.Then, the 1st lens arra 10 and spacer substrate 40 are calibrated, as shown in Figure 7 B, the end face of spacer substrate 40 is pressed on the end face 11d of the 1st lens arra 10, UV light is irradiated to sticker G1 and makes it harden.
Next, as seen in figure 7 c, sticker G2 is coated with to the other end of spacer substrate 40 or the end face 21c of the 2nd lens arra 20.Then, the 1st lens arra 10 and the 2nd lens arra 20 are calibrated, as illustrated in fig. 7d, the end face of spacer substrate 40 is pressed on the end face 21c of the 2nd lens arra 20.
Next, the bias between the 1st lens arra 10 and the 2nd lens arra 20 is measured, and carry out bias adjustment.Now, use measures the eccentric determinator identical with adjusting operation with bias time shaping.Particularly, the bias between the 1st lens arra 10 and the 2nd lens arra 20 measures and uses the eccentric determinator 180 shown in Fig. 8 to carry out.Eccentric determinator 180 shown in Fig. 8 also possesses fulcrum arrangement 181, and described fulcrum arrangement 181 is appended in the eccentric determinator 80 shown in Fig. 6 for supporting the 2nd lens arra 20.Fulcrum arrangement 181 has: the support 181a of supporting the 2nd the lens arra 20 and drive division 181b of driving support 181a.In addition, the eccentric determinator 180 shown in Fig. 8 can be used together or is also used as the eccentric determinator 80 shown in Fig. 6.
During bias when stacked measures, obtain the 2nd on the 2nd optical surface 11b of the 1st lens arra 10 to the coordinate difference of the 2nd on the 2nd optical surface 21b of the 2nd lens arra 20 on the same optical axis OA of mark M2a and the 2nd optical surface 11b to mark M2a.A pair the 2nd to 2 positions being located at the 1st and the 2nd lens arra 10,20 bias mensuration is carried out to mark M2a.First, utilize microscope 82a make focus to the 2nd on the 2nd optical surface 11b of the 1st lens arra 10 to mark M2a, utilize calculation unit 83b from the image obtained by CCD camera 82b calculate the 2nd to mark M2a coordinate.Next, utilize microscope 82a that focal position is offset along optical axis OA direction, and make focus to the 2nd on the 2nd optical surface 21b of the 2nd lens arra 20 to mark M2a, utilize calculation unit 83b from the image obtained by CCD camera 82b calculate the 2nd to mark M2a coordinate.Here, on optical axis OA direction, all do not mark on the 1st optical surface 11a of the 1st lens arra 10 and on the 1st optical surface 21a of the 2nd lens arra 20, when therefore observing from object side or image side, the mark be measured to beyond the mark of expectation can be prevented.In addition, the 2nd calculate the coordinate of mark M2a can to carry out with identical mode illustrated in molding procedure.That is, using the 2nd to the coordinate of any point marked in M2a as mark, also can calculate the coordinate of the center of the marking image obtained, also mark self can be seen that the center of marking measures when the 2nd is fully little to mark M2a.Next, calculation unit 83b is utilized to calculate both coordinate differences.If do not have coordinate difference, being do not have eccentric state, if there is coordinate difference, is that the optical axis OA of lens section 21 offsets from the optical axis OA of lens section 11 and has eccentric state.Here, if bias is in allowed band, then can regard as from the 2nd of object side when object side or image side observation overlapping in fact to marking the center of M2a and the 2nd of the image side center to mark M2a.By the 2nd of 2 positions, the bias of mark M2a is measured, the 1st and the 2nd lens arra 10, the displacement between 20 and the skew of rotation can be determined.
During bias when stacked measures, when there is coordinate difference, utilizing fulcrum arrangement 181 that the position of the 2nd lens arra 20 is moved or rotating to carry out bias adjustment, and again carrying out bias mensuration.Repeatedly carry out bias to measure and adjustment, until eliminate in fact the 2nd coordinate difference (coordinate difference be 0 or within the scope of permissible error) to mark M2a at 2 positions of lens section 11,21.
Eliminate coordinate difference in fact in bias measures after, as illustrated in fig. 7d, irradiating UV light to sticker G2 makes it harden.
By obtaining the stacked lens arra 100 essentially eliminating the bias between the 1st and the 2nd lens arra 10,20 shown in Figure 1B etc. with upper type.In addition, in the driver carrying out the device calibrated, store and essentially eliminate the 1st and the 2nd lens arra 10, the condition of the bias between 20 also performs calibration with identical condition, can repeat the stacked of high-precision multiple lens arra thus.Stacked lens arra 100 can be assembled in not shown retainer etc. and be used as camera head etc.
D) manufacture method of stacked lens
In the manufacture method of stacked lens, identically with the manufacture method of above-mentioned stacked lens arra, carry out molding procedure and lamination process, then, carry out cut-out operation.
(cut-out operation)
As shown in Figure 9, cut off stacked lens arra 100 along cutting line DL, obtain the stacked lens 200 shown in Fig. 3 A ~ 3C.Stacked lens 200 can be assembled in not shown retainer etc. and use.
According to stacked lens arra 100 described above etc., the 1st and the 2nd is located at different positions to mark M1, M2a, and as lens section 11, and the same optical axis OA of the same reference axis of 21 is only configured with the 1st to mark M1 or the 2nd to mark M2a.That is, the same optical axis OA at the position as object is only configured with 2 marks.Therefore, when shaping or stacked bias measures and adjust, the mark be not intended to arranged on same optical axis OA beyond the mark of expectation can be avoided, thus clearly can distinguish the 1st or the 2nd to mark M1, M2a.Thereby, it is possible to prevent error measurement from arriving mark beyond the mark of expectation.Its result is, forms the stacked lens arra 100 with good optical property and stacked lens 200 that measure through the bias that precision is good and adjust.
In addition, as has been explained, lens section 11 on same optical axis OA, 21 arrange the 1st and the 2nd to mark M1, M2a also utilizes marker determination the 1st and the 2nd lens arra 10 of the mark of the 2nd optical surface 11b of lens section 11 and the 2nd optical surface 21b of lens section 21,20 eccentric time, following problem can be produced.If the 1st optical surface 21a of the 2nd optical surface 11b of lens section 11 and lens section 21 is close, then there is the coordinate time of the mark of the 2nd optical surface 11b measuring lens section 11, the mark of the 1st optical surface 21a of lens section 21 also carries out the situation of focusing simultaneously, thus the differentiation of mark becomes difficulty.In this case, the mark beyond the mark being likely measured to expectation.
(the 2nd embodiment)
Below, the stacked lens arra etc. of the 2nd embodiment is described.In addition, the stacked lens arra of the 2nd embodiment etc. are out of shape the stacked lens arra etc. of the 1st embodiment and are formed, and not specified part is the part identical with the 1st embodiment.
As shown in Figure 10, the 1st and the 2nd along length of side direction, 2 positions are configured in respectively to mark M1, M2a.That is, at the lens section 11 in rectangular arrangement, the lens section 11,21 on the row L1 in 21 is provided with as the 1st marking the 1st of M1,2nd, 6th and 7th mark U1, U2, U6, U7, the lens section 11,21 on row L2 is provided with and marks U3, U4 as the 2nd to the 3rd and the 4th of mark M2a.Thus, the direction of the rotation offset of easy understand the 1st and the 2nd lens arra 10,20 intuitively, therefore eccentric adjustment becomes easy.
(the 3rd embodiment)
Below, the stacked lens arra etc. of the 3rd embodiment is described.In addition, the stacked lens arra of the 3rd embodiment etc. are out of shape the stacked lens arra etc. of the 1st embodiment and are formed, and not specified part is the part identical with the 1st embodiment.
As shown in Figure 11 A, stacked lens arra 300 has the 1st lens arra 10, the 2nd lens arra 20, the 3rd lens arra 30 and spacer substrate 40,50.That is, stacked lens arra 300 is made up of 3 lens arras.
1st and the 2nd lens arra 10,20 and spacer substrate 40 identical with the 1st embodiment.
3rd lens arra 30 is roughly the same with the structure of the 1st lens arra 10, suitably omits the description therefore.3rd lens arra 30 is glass system or resin-made, the supporting mass 32 having multiple lens section 31 and be connected with multiple lens section 31.Lens section 31 is aspherical shape, has the 1st optical surface 31a in the side of the 3rd lens arra 30, has the 2nd optical surface 31b at the opposite side of the 3rd lens arra 30.1st and the 2nd optical surface 31a, 31b has convex form.Stacked lens arra 300 cut-out formed in stacked lens 400 (with reference to Figure 12), supporting mass 32 becomes flange part 232.At the multiple 1st and the 2nd optical surface 31a of lens section 31, the optical surface of the part in 31b is respectively equipped with eccentric the 8th, 9th and 5th mark U8, U9, the U5 measuring and adjust.Particularly, the 8th and the 9th mark U8, U9 is located at the 1st and the 2nd optical surface 31a of the 6th lens section K6 in lens section 31 respectively, 31b.Further, the 5th mark U5 is located at the 2nd optical surface 31b of the 4th lens section K4.That is, the 8th and the 9th mark U8, U9 be located at mark the different lens section of U5 31 from the 5th optical axis OA on.In addition, mark is not provided with at the 1st optical surface 31a of the 4th lens section K4.3rd lens arra 30 can be formed by the material identical with the 1st lens arra 10 or the 2nd lens arra 20, also can be formed by different materials.
Below, for convenience of description, with the illustrated in the 1st embodiment the 1st, 2nd, 6th and 7th mark U1, U2, U6, similarly, there is the 8th and the 9th mark U8, the U9 that will be located at the object side of 1 lens section 31 (the 6th lens section K6) and the optical surface of image side and be called separately the 1st to the situation marking M1 in U7.And, U3 is marked with the illustrated in the 1st embodiment the 3rd and the 4th, U4 similarly, the 5th mark U5 that an optical surface (being the 2nd optical surface 31b in the present embodiment) in the object side of 1 lens section 11,21 (the 4th lens section K4) and image side arranges by existence is called separately the 2nd to the situation marking M2b.
In the 3rd embodiment, in the 1st lens arra 10, to mark the 3rd paired position marking U3 (the 2nd to marking M2a) of U4 with the 4th of the 2nd lens arra 20 the being different from, be provided with to mark with the 5th of the 3rd lens arra 30 the U5 paired the 3rd mark U3 (the 2nd to marking M2b).That is, the 2nd of the 3rd lens arra 30 the is opposed to marking M2b with the 2nd of the 1st lens arra 10 to mark M2b.In addition, in the example in the figures, the 3rd mark U3 is set in the 1st lens arra 10 as the mark of formation the 2nd to mark M2b, but in addition, in the 2nd lens arra 20, the 4th mark U4 also can be set and be used as the mark of formation the 2nd to mark M2b.
Spacer substrate 50 is roughly the same with the structure of spacer substrate 40, suitably omits the description therefore.Spacer substrate 50 is located between the 2nd lens arra 20 and the 3rd lens arra 30.Spacer substrate 50 has adjustment the 2nd and the 3rd lens arra 20, the effect of the distance between 30.Spacer substrate 50 forms peristome 51 with the arrangement of each lens section 21,31 correspondence with the 2nd and the 3rd lens arra 20,30.
The shown stacked lens arras 300 such as Figure 11 A are cut, then obtains the stacked lens 400 shown in Figure 12 A ~ 12D.Stacked lens 400 have the 1st lens feature 110, the 2nd lens feature 120, the 3rd lens feature 130 and distance piece 140,150.1st and the 2nd lens feature 110,120 and distance piece 140 identical with the 1st embodiment.
3rd lens feature 130 is cutting the 3rd lens arra 30 and produces, and has lens section 31 and flange part 232.Distance piece 150 is cutting spacer substrate 50 and produces, and has peristome 51 and supporting mass 152.
As shown in Figure 12 A ~ 12D, in the stacked lens 400 cut out from stacked lens arra 300, exist and have the 1st or the 2nd to marking the lens of M1, M2a, M2b and not there are the lens of above-mentioned mark.
In addition, when stacked more than 3 lens arras, if be configured in same optical axis OA on to mark M1 and the 2nd to mark M2a, M2b by the 1st, then on optical axis OA, be arranged with the mark of the quantity more than the situation of stacked 2 lens arras.Therefore, when bias measures and adjust, the possibility of the mark beyond error measurement to the mark expected improves.Thus, if as in this embodiment, be configured to the 1st and the 2nd to mark M1, M2a, M2b different from each other, then can not error measurement to expectation mark beyond mark, the better stacked lens arra 300 of precision and stacked lens 400 can be obtained.
Above, the stacked lens arra etc. of present embodiment is illustrated, but stacked lens arras of the present invention etc. are not limited to said structure.Such as, in the above-described embodiment, shape, the size of the 1st and the 2nd optical surface 11a, 11b etc. suitably can change according to purposes and function.Further, the quantity of the lens section 11,21,31 formed in stacked lens arra 100 also can suitably change.
Further, in the above-described embodiment, by the 1st and the 2nd, mark M1, M2a, M2b are located on optical axis OA.Thereby, it is possible to easily carry out bias mensuration and adjustment, thus easily produce eccentric mensuration and adjust easy and that precision is high array lens.But, be not limited thereto, also can be set to the 1st and the 2nd mark M1, M2a, M2b and depart from from optical axis OA.Further, also multiple mark can be set centered by optical axis OA, and utilize the coordinate of mark to calculate the 1st and the 2nd optical surface 11a, the coordinate on the summit of 11b etc.
Further, in the above-described embodiment, by spacer substrate 40,50 are located at the 1st, 2nd and 3rd lens arra 10,20, between 30, but also can not arrange.Further, sticker also can be utilized to adjust the 1st, 2nd and 3rd lens arra 10,20, the distance between 30.
Further, in the above-described embodiment, the 1st, 2nd and 3rd lens arra 10,20, the configuration of the 1st in 30 and the 2nd to mark M1, M2a, M2b, as long as the 1st and the 2nd is in mark M1, M2a, M2b the configuration that different positions also can adjust bias respectively.Such as shown in FIG. 13A, diagonally can configure a mark (in diagram, the 2nd to mark M2a), and configure another mark (the 1st to mark M1 in the example shown) along length of side direction.Further, such as, when the stacked lens of stacked 3 lens arras, also there is arrangement as shown in Figure 13 B.Further, at each lens arra 10,20, in 30, the 1st can also be changed to the configuration marking M1.
Further, in the above-described embodiment, respectively arrange the 1st and the 2nd at 2 positions to mark M1, M2a, M2b, but also can as shown in fig. 13 c, arrange more than 3 positions.In this case, more reliable data can be obtained due to bias adjustment.
Further, in the above-described embodiment, utilize glass to form the 1st and the 2nd lens arra 10,20, but resin also can be utilized to be formed.When using resin as material, only can form the 1st and the 2nd lens arra 10,20 by resin, also can form lens arra by the substrate of resinous lens section and glass etc.The forming method of resin can use injection mo(u)lding etc. except impact briquetting.In stamping forming situation, use such as light-cured resin as resin material.Further, when injection mo(u)lding, use such as heat-curing resin or thermoplastic resin as resin material.
Further, in the above-described embodiment, also aperture can be set in stacked lens arra 100.
Further, in the respective embodiments described above, in stacked multiple lens arras, an optical surface that also can comprise in object side or image side is the structure in smooth face.Even if like this, optical property also can not be made significantly to reduce, and the shaping of lens arra can be carried out with comparalive ease.In addition, in this case, for this lens arra, the bias in 1 lens section can not be needed to adjust, therefore also can not be arranged on object side and image side both sides form markd lens section.
And, in the respective embodiments described above, show the bias that is used for when carrying out stacked is measured the 2nd to mark M2a, M2b is all located at the example of the object side (or image side) of each lens arra, but be not limited thereto, also can be provided with at object side the 2nd to mark M2a, M2b lens arra and be provided with in image side the 2nd to mark M2a, M2b lens arra carry out stacked.In this case, 2 marks can be arranged in close, also can be arranged in 2 mark away from.
And, in the above-described embodiment, also can usage flag, carry out the contraposition of stacked lens arra 100,300 and CCD or CMOS (complementary metal oxide semiconductor (CMOS) Complementary MetalOxide Semiconductor) the sensor imaging apparatus of combination.Such as, as shown in Figure 13 B and Figure 13 C, mark is configured on lens section in the multiple lens sections in rectangular arrangement, bight, the mark in bight and the imaginary rectangle that obtains is linked according to observing they and the image data extraction that obtains from object side, and in the mode making itself and the shape of the effective coverage of sensor carry out mating to stacked lens arra (lens arra 10,20) calibrate with sensor, both contrapositions can be carried out thus.
Further, in the above-described embodiment, stacked lens arra 100 by cutting off operation (cutting) and singualtion produces stacked lens 200, and is used in camera head, does not only have such use, also can not singualtion and directly using.Such as, also the lens arra of compound eye imaging device can be used as, described compound eye imaging device is made up of the solid-state imager of CCD type imageing sensor or CMOS type imageing sensor etc. and multiple imaging lens systems of two-dimensional arrangement, and for again forming 1 image from the multiple images utilizing each lens to obtain.
Further, in the 3rd embodiment, when stacked 3rd lens arra 30, utilize the combination of the 1st and the 3rd lens arra 10,30 to carry out bias and measure and adjustment, but the combination of the 2nd and the 3rd lens arra 20,30 also can be utilized to carry out bias mensuration and adjustment.
Claims (16)
1. a stacked lens arra, its stacked multiple lens arra, the feature of described stacked lens arra is,
Each lens arra comprises multiple lens section, has the multiple optical surfaces corresponding with described multiple lens section respectively at object side and image side,
Described multiple lens arra comprises: the 1st lens arra with the 1st lens section and the 2nd lens section, described 1st lens section has the 1st mark at the optical surface of object side and has the 2nd mark at the optical surface of image side, and the optical surface of described 2nd lens section in the optical surface of object side and the optical surface of image side has the 3rd mark and do not mark at another optical surface; And
Have the 2nd lens arra of the 3rd lens section, the optical surface of described 3rd lens section in the optical surface of object side and the optical surface of image side has the 4th mark and does not mark at another optical surface,
When observing from object side or image side, the center that described 3rd mark and the described 4th is marked at both is overlapping in fact.
2. stacked lens arra according to claim 1, is characterized in that,
Described 1st to the 4th mark is located on the optical axis of each self-corresponding described 1st to the 3rd lens section.
3. stacked lens arra according to claim 1 and 2, is characterized in that,
Described 1st lens arra possesses multiple described 1st mark and multiple described 2nd mark that are located at least 2 positions in the position be separated.
4. stacked lens arra according to claim 3, is characterized in that,
Described multiple lens section is rectangular arrangement, and described 1st mark and described 2nd mark diagonally configure.
5. stacked lens arra according to claim 3, is characterized in that,
Described multiple lens section is rectangular arrangement, and described 1st mark and described 2nd mark configure along direction, sideline.
6., according to the stacked lens arra in Claims 1 to 5 described in any one, it is characterized in that,
Described 1st lens arra possesses multiple described 3rd mark being located at least 2 positions in the position be separated.
7. stacked lens arra according to claim 6, is characterized in that,
Described multiple lens arra also comprises the 3rd lens arra, and the 3rd lens arra comprises the 4th lens section, and the optical surface of described 4th lens section in the optical surface of object side and the optical surface of image side has the 5th mark and do not mark at another optical surface,
When observing from object side or image side, one and the described 4th center being marked at both in multiple described 3rd mark is overlapping in fact, when observing from object side or image side, in multiple described 3rd mark another and the described 5th to be marked at both center overlapping in fact.
8., according to the stacked lens arra in Claims 1 to 5 described in any one, it is characterized in that,
Described 2nd lens arra possesses multiple described 4th mark being located at least 2 positions in the position be separated.
9. stacked lens arra according to claim 8, is characterized in that,
Described multiple lens arra also comprises the 3rd lens arra, and the 3rd lens arra comprises the 4th lens section, and the optical surface of described 4th lens section in the optical surface of object side and the optical surface of image side has the 5th mark and do not mark at another optical surface,
When observing from object side or image side, one and the described 3rd center being marked at both in multiple described 4th mark is overlapping in fact, when observing from object side or image side, in multiple described 4th mark another and the described 5th to be marked at both center overlapping in fact.
10., according to the stacked lens arra in claim 1 ~ 9 described in any one, it is characterized in that,
Described 2nd lens arra comprises the 5th lens section, and described 5th lens section has the 6th mark at the optical surface of object side and has the 7th mark at the optical surface of image side.
The manufacture method of 11. 1 kinds of stacked lens arras, is characterized in that, possesses:
Molding procedure, in this molding procedure, molds lens arra, and described lens arra has the multiple optical surfaces corresponding with multiple lens section at object side and image side;
Lamination process, in this lamination process, carries out stacked to the multiple lens arras molded in described molding procedure,
In described molding procedure, on 1st lens section of the 1st lens arra in described multiple lens arra, the 1st mark is formed at the optical surface of object side, optical surface in image side forms the 2nd mark, on the 2nd lens section of described 1st lens arra, an optical surface in the optical surface of object side and the optical surface of image side forms the 3rd mark and does not form mark at another optical surface, on 3rd lens section of the 2nd lens arra in described multiple lens arra, an optical surface in the optical surface of object side and the optical surface of image side forms the 4th mark and does not form mark at another optical surface,
In described lamination process, stacked described 1st and the 2nd lens arra of mode of the center that the 3rd mark and the described 4th described in during to observe from object side or image side is marked at both overlap in fact.
The manufacture method of 12. stacked lens arras according to claim 11, is characterized in that,
In described molding procedure, utilize the 1st mould and the 2nd mould to mold described 1st lens arra,
Described 1st mould has multiple 1st optics transfer surfaces of the optical surface of the object side for molding described 1st lens arra, the described 1st optics transfer surface corresponding with the optical surface of the object side of described 1st lens section comprises the 1st marking transfer face marked for the formation of the described 1st
Described 2nd mould has multiple 2nd optics transfer surfaces of the optical surface of the image side for molding described 1st lens arra, the described 2nd optics transfer surface corresponding with the optical surface of the image side of described 1st lens section comprises the 2nd marking transfer face marked for the formation of the described 2nd
The 3rd optics transfer surface for the formation of described 2nd lens section of described 1st mould or the 4th optics transfer surface for the formation of described 2nd lens section of described 2nd mould comprise the 3rd marking transfer face of described 3rd mark for the formation of described 2nd lens section.
The manufacture method of 13. stacked lens arras according to claim 11 or 12, is characterized in that,
By observing the described 1st and the 2nd mark of described 1st lens arra, measure the bias of described 1st lens section.
14., according to the manufacture method of the stacked lens arra in claim 11 ~ 13 described in any one, is characterized in that,
Described 1st mould has multiple described 1st marking transfer face, described 2nd mould has multiple described 2nd marking transfer face, in described molding procedure, mold described 1st lens arra with multiple described 1st lens section being in separation point position, by observing many group the described 1st and the 2nd marks, measure the bias of the 1st lens section described in a group that is configured on multiple different optical axis.
15., according to the manufacture method of the stacked lens arra in claim 11 ~ 14 described in any one, is characterized in that,
In described molding procedure, utilize the 3rd mould and the 4th mould to mold described 2nd lens arra,
6th optics transfer surface of the 5th optics transfer surface of the object side optical surface for the formation of described 3rd lens section of described 3rd mould or the image side optical surface for the formation of described 3rd lens section of described 4th mould comprises the 4th marking transfer face of described 4th mark for the formation of described 3rd lens section
Described 1st mould or described 2nd mould have multiple described 3rd marking transfer face, in described molding procedure, mold described 1st lens arra with multiple described 1st lens section being in separation point position,
Described 3rd mould or described 4th mould have multiple described 4th marking transfer face, in described molding procedure, mold described 2nd lens arra with multiple described 3rd lens section being in separation point position,
By observing many group the described 3rd and the 4th marks, measure the bias of the described 1st and the 2nd lens arra.
The manufacture method of 16. 1 kinds of stacked lens, is characterized in that, possesses:
Molding procedure, in this molding procedure, molds lens arra, and described lens arra has the multiple optical surfaces corresponding with multiple lens section at object side and image side;
Lamination process, in this lamination process, carries out stacked to the multiple lens arras molded in described molding procedure,
Cut off operation, in this cut-out operation, stacked lens arra stacked in described lamination process cut off singualtion and forms multiple stacked lens,
In described molding procedure, on 1st lens section of the 1st lens arra in described multiple lens arra, the 1st mark is formed at the optical surface of object side, optical surface in image side forms the 2nd mark, on the 2nd lens section of described 1st lens arra, an optical surface in the optical surface of object side and the optical surface of image side forms the 3rd mark and does not form mark at another optical surface
On 3rd lens section of the 2nd lens arra in described multiple lens arra, an optical surface in the optical surface of object side and the optical surface of image side forms the 4th mark and does not form mark at another optical surface,
When observing from object side or image side, the center that described 3rd mark and the described 4th is marked at both is overlapping in fact.
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| JP2012-275748 | 2012-12-18 | ||
| JP2012275748 | 2012-12-18 | ||
| PCT/JP2013/083738 WO2014098075A1 (en) | 2012-12-18 | 2013-12-17 | Layered lens array, production method for layered lens array, and production method for layered lens |
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| CN104871041A true CN104871041A (en) | 2015-08-26 |
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| CN201380066429.4A Pending CN104871041A (en) | 2012-12-18 | 2013-12-17 | Layered lens array, production method for layered lens array, and production method for layered lens |
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| Country | Link |
|---|---|
| JP (1) | JPWO2014098075A1 (en) |
| CN (1) | CN104871041A (en) |
| WO (1) | WO2014098075A1 (en) |
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| CN110892293A (en) * | 2017-07-26 | 2020-03-17 | 株式会社大赛璐 | Optical component and method for manufacturing the same |
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| CN114779488A (en) * | 2022-04-29 | 2022-07-22 | 左点实业（湖北）有限公司 | Dot-matrix optical system based on red light treatment |
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| Publication number | Publication date |
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| JPWO2014098075A1 (en) | 2017-01-12 |
| WO2014098075A1 (en) | 2014-06-26 |
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