Patent US6982833B2 successfully refreshed from Google Patents.
US6982833B2
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Erect image resin lens array and the manufacture thereof
Assignee: Nippon Sheet Glass Co Ltd
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Filing: 2002-10-30
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Granted: 2006-01-03
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Expires: 2022-10-30
Abstract
Abstract A resin lens plate has, on its planar surface, convex lenslets arranged in a regular pattern with adjacent lenslets being apart from each other by a specified center-to-center pitch. Each of the convex lenslets has a rectangular or hexagonal contour in a plan view of the plate, and the lenslets are arranged such that the direction in which the center-to-center distance between adjacent lenslets takes a maximum value is in parallel with the lengthwise side of the plate. A groove or a ridge is formed along the bisector of a center-to-center line drawn between each pair of adjacent lenslets, and a light absorbing film is formed over the groove or the ridge. The groove or ridge inhibits the entry of stray light to the lenslet from adjacent lenslets.
Inventors
- 👤 Hiroyuki Nemoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:54
CPC Classifications
G; G02; G02B; G02B3/00; G02B3/0006; G02B3/0012; G02B3/0031; G02B3/0037; G02B3/0056; G02B3/0062; G02B3/0068; G02B3/0075; G03; G03B; G03B21/00; G03B21/54; G03B21/56; G03B21/60; G03B21/62; G03B21/625; B; B29; B29C; B29C65/00; B29C65/02; B29C65/08; B29C66/00; B29C66/01; B29C66/05; B29C66/302; B29C66/3022; B29C66/30223; B29C66/50; B29C66/51; B29C66/54
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
139 words
A resin lens plate having oblong shape comprising: A lenslet forming area at the center of one or both of its surfaces where a matrix of convex lenslets each having a spherical or aspherical end surface are regularly arranged such that adjacent lenslets are apart from each other by a specified center-to-center pitch; and margins around the central lenslet area where no lenslets are formed, wherein each convex lenslet has a quadrangular or hexagonal contour in a plan view of the plate; and the direction in which the center-to-center distance between adjacent lenslets takes a maximum value is in parallel with the lengthwise side of the plate, and wherein a transparent conductive film is formed on the surface of the plate in such a manner as to allow the potential level of the transparent conductive film to be adjusted.
Claim 2
Dependent Claim
139 words
A resin lens plate having oblong shape comprising: A lenslet forming area at the center of one or both of its surfaces where a matrix of convex lenslets each having a spherical or aspherical end surface are regularly arranged such that adjacent lenslets are apart from each other by a specified center-to-center pitch; and margins around the central lenslet area where no lenslets are formed, wherein each convex lenslet has a quadrangular or hexagonal contour in a plan view of the plate; and the direction in which the center-to-center distance between adjacent lenslets takes a maximum value is in parallel with the lengthwise side of the plate, and wherein a transparent conductive film is formed on the surface of the plate in such a manner as to allow the potential level of the transparent conductive film to be adjusted.
Claim 3
Dependent Claim
16 words
A resin lens plate as described in claim 1 wherein the convex lenslets are densely packed.
Claim 4
Dependent Claim
38 words
A resin lens plate as described in claim 1 wherein the plate has, on one of its lengthwise lateral surfaces, a gate remain which is a remnant of a gate through which resin was injected for injection molding.
Claim 5
Dependent Claim
24 words
A resin lens plate as described in claim 1 wherein an undercut for assemblage is provided to a lengthwise lateral surface of said plate.
Claim 6
Dependent Claim
56 words
A resin lens plate as described in claim 1 wherein a projection is provided to each margin which is outside the central lenslet area and extends in parallel with the lengthwise side of the lens plate so that, when two such lens plates are combined, the interval between each pair of opposite lenslets can be adjusted.
Claim 7
Dependent Claim
53 words
A resin lens plate as described in claim 1 wherein a bonding region is provided to each margin which is outside the central lenslet area and extends in parallel with the lengthwise side of the lens plate, the bonding region having a height equal to or less than that of the convex lenslet.
Claim 8
Dependent Claim
64 words
A resin lens plate as described in claim 1 comprising a projection on each lengthwise terminal margin on one surface and a groove on the corresponding site on the other wherein the height of the projection is less in extent than the depth of the groove, and the projection is so similarly prepared in dimension as to be able to engage with the groove.
Claim 9
Dependent Claim
22 words
A resin lens plate as descried in claim 1 wherein a notch is prepared on each lengthwise terminal end of the plate.
Claim 10
Dependent Claim
26 words
A resin lens plate as described in claim 1 wherein a light absorbing film is formed along the boundary between each pair of adjacent convex lenslets.
Claim 11
Dependent Claim
35 words
A resin lens plate as described in claim 1 wherein a light absorbing film having a specified width is formed along the bisector of a center-to-center line drawn between each pair of adjacent convex lenslets.
Claim 12
Dependent Claim
44 words
A resin lens plate as described in claim 1 wherein a groove or a ridge is formed along the bisector of a center-to-center line between each pair of adjacent convex lenslets, and a light absorbing film is formed over the groove or the ridge.
Claim 13
Dependent Claim
48 words
A resin lens plate as described in claim 1 wherein a groove is formed along the bisector of a center-to-center line between each pair of adjacent convex lenslets; and black ink is introduced into the groove via capillary action to form a light absorbing film over the groove.
Claim 14
Dependent Claim
71 words
A resin lens plate as described in claim 1 which has a groove formed along the bisector of a center-to-center line between each pair of adjacent lenslets on one surface and a ridge formed along the bisector of a center-to center line between each pair of adjacent lenslets an the other surface, the groove being able to engage with the ridge, and a light absorbing film is formed over each groove.
Claim 15
Dependent Claim
42 words
A resin lens plate as described in claim 1 , which has a groove formed along the bisector of a center-to-center line between each pair of adjacent lenslets on both of its surfaces, and a light absorbing film formed over each groove.
Claim 16
Dependent Claim
28 words
A resin lens plate as described in claim 13 or 14 wherein the light absorbing film is made from black ink introduced into the groove via capillary action.
Claim 17
Dependent Claim
21 words
An erect image resin lens array obtained by stacking two or more resin lens plates as described in claim 1 .
Claim 18
Dependent Claim
47 words
An erect image resin lens array obtained by stacking two or more resin lens plates as described in claim 13 such that, for each pair of apposed resin lens plates, the groove of one resin lens plate engages with the ridge of the apposite resin lens plate.
Claim 19
Dependent Claim
58 words
An erect image resin lens array obtained by stacking two or more resin lens plates as described in claim 14 wherein, for each pair of apposed resin lens plates, a light shielding septum having a thickness equal to or less than the width of the groove is inserted into the space formed by each pair of opposite grooves.
Claim 20
Dependent Claim
75 words
An erect image resin lens array as described in claim 16 which has, on its light impinging side or light emanating side, or both its light impinging side and light emanating side, a septal structure extending essentially in parallel with the optical axis of each lenslet for separating, for each lenslet, its image forming space distinctly from those of adjacent lenslets, thereby inhibiting the entry of stray light to the lenslet from the adjacent lenslets.
Claim 21
Dependent Claim
52 words
An erect image resin lens array as described in claim 19 wherein the septal structure comprises a structure obtained by arranging plural planar thin plates at regular intervals such that the plate is in parallel with the optical axis of the lenslet and vertical to the lengthwise direction of the lens array.
Claim 22
Dependent Claim
46 words
An erect image resin lens array as described in claim 16 which is provided, for inhibiting the entry of stray light, with a field angle restricting means on its light impinging side or light emanating side, or both its light impinging side and light emanating side.
Claim 23
Dependent Claim
60 words
An erect image resin lens array as described in claim 21 wherein the field angle restricting means comprises a light restricting film which selectively scatters or absorbs rays of incident light impinging with an angle beyond a specified angle range, and the direction in which the field angle is restricted is in parallel with lengthwise direction of the lens array.
Claim 24
Dependent Claim
90 words
An erect image resin lens array as described in claim 16 wherein plural resin lens plates, each of which has, on its flat surface, a pin impression or a print left by a pin of a die which urges the parting of the lens plate from the die, and, on its lateral surface, a gate remain or remnant of a gate for resin injection which was used during injection molding, are stacked such that the pin impressions and the gate remains of all the resin lens plates are similarly oriented.
Claim 25
Dependent Claim
61 words
An image transmission system for optical writing or reading obtained by placing an erect image resin lens array as described in claim 16 in a housing which has a thin slit, the slit having a width equal to or less than that of the central lenslet area in the subordinate scanning direction and extending in parallel with the main scanning direction.
Claim 26
Dependent Claim
24 words
An image transmission system for optical writing or reading as described in claim 24 wherein the slit is covered with a light transmitting medium.
Claim 27
Dependent Claim
50 words
An image transmission system for optical writing or reading as described in claim 24 wherein placement of the erect image resin lens array in the housing is achieved by engaging the undercut portions provided to the peripheral surfaces of the resin lens plates with corresponding projections provided to the housing.
Claim 28
Dependent Claim
66 words
An image transmission system for optical writing or reading as described in claim 24 wherein a light restricting film which selectively scatters or absorbs rays of incident light impinging with an angle beyond a specified angle range, is provided between the slit and the erect image resin lens array such that the direction in which the field angle is restricted corresponds with the main scanning direction.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2009-01-02 | 2009-07-04 | 2010-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-01-02 | 2013-07-04 | 2014-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-01-02 | 2017-07-04 | 2018-01-03 | $7700.00 | Window Closed / Lapsed |