US4134651A
Expired / Lapsed
US
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Method of making an assembly
Assignee: Monotype Corp Ltd
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Filing: 1977-08-22
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Granted: 1979-01-16
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Expires: 1997-08-22
Abstract
Abstract A method of making an assembly comprising a support plate with an array of lenslets made from optically refractive material mounted thereon, the support plate being substantially optically transparent at least in the regions adjacent the lenses, the method including, in respect of each lenslet, the steps: positioning the lenslet on the plate with a quantity of adhesive therebetween, the adhesive being curable by electromagnetic radiation in a given wavelength range; and, after checking that the lenslet is in a required position relative to the support plate, applying electromagnetic radiation within said wavelength range to the adhesive through the lens and/or the plate to cure the adhesive and fix the lenslet to the plate. The checking step includes observing an image, formed by an optical system including the lenslet, of a reference mark and adjusting the position of the lenslet on the support plate until the observed image is exactly in a predetermined position in an image plane. An assembly made by the method and a photocomposing machine incorporating such an assembly.
Inventors
- 👤 Charles J. England
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:24
CPC Classifications
G; G02; G02B; G02B3/00; G02B3/0006; G02B3/0037; G02B3/0056; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
142 words
A method of making an assembly comprising a support plate with an array of lenslets made from optically refractive material mounted thereon, the support plate being substantially optically transparent at least in the regions adjacent the lenses, the method including, in respect of each lenslet, the steps of: positioning the lenslet on the plate with a quantity of adhesive between a surface of the lenslet and a surface portion of the support plate, each of said surfaces being perpendicular to the optical axis of the lenslet and the adhesive being curable by electromagnetic radiation in a given wavelength range; checking that the lenslet is in a required position relative to the support plate; and after said checking step, applying electromagnetic radiation within said wavelength range to the adhesive through the lens to cure the adhesive and fix the lenslet to the plate.
Claim 2
Independent Claim
142 words
A method of making an assembly comprising a support plate with an array of lenslets made from optically refractive material mounted thereon, the support plate being substantially optically transparent at least in the regions adjacent the lenses, the method including, in respect of each lenslet, the steps of: positioning the lenslet on the plate with a quantity of adhesive between a surface of the lenslet and a surface portion of the support plate, each of said surfaces being perpendicular to the optical axis of the lenslet and the adhesive being curable by electromagnetic radiation in a given wavelength range; checking that the lenslet is in a required position relative to the support plate; and after said checking step, applying electromagnetic radiation within said wavelength range to the adhesive through the lens to cure the adhesive and fix the lenslet to the plate.
Claim 3
Dependent Claim
57 words
A method according to claim 1 in which said checking includes observing an image formed in an image plane by an optical system including the lenslet, of a reference mark, and adjusting the position of the lenslet on the support plate until the observed image is located in a predetermined manner with respect to fixed reference data.
Claim 4
Dependent Claim
18 words
A method according to claim 2 wherein the lenslets are positioned, adjusted and fixed one at a time.
Claim 5
Dependent Claim
40 words
A method according to claim 2 wherein a master matrix which, during performance of the method is held fixed relative to the support plate, carries an array of said reference marks, a different mark image being observed for each lenslet.
Claim 6
Dependent Claim
69 words
A method according to claim 4 wherein said optical system also includes a converging lens which is common to the optical systems including the respective lenslets, and which focuses said images of said marks in said image plane, said lenslets being adjusted to cause the images of the respective reference marks to be positioned at a common image position defined by said fixed reference data, in said image plane.
Claim 7
Dependent Claim
32 words
A method according to claim 5 in which the lenslets form respective collimated beams carrying information concerning the respective reference marks, from which beams the common converging lens forms the respective images.
Claim 8
Dependent Claim
24 words
A method according to claim 4 wherein the reference marks comprise cross points of a grid of fine lines carried by the master matrix.
Claim 9
Dependent Claim
46 words
A method according to claim 2 wherein the electromagnetic radiation is applied through the lenslets and is directed thereto from a radiation source by a mirror which is moved for this purpose into the path of the light travelling from the lenslets and forming said images.
Claim 10
Dependent Claim
20 words
A method according to claim 1 wherein said electromagnetic radiation for curing the adhesive lies within the ultra-violet wavelength range.
Claim 11
Dependent Claim
113 words
An assembly comprising a support plate with an array of lenslets made from optically refractive material mounted thereon, the support plate being substantially optically transparent at least in the regions adjacent the lenslets, the said lenslets each being fixed along one surface to a surface portion of said support plate with its optical axis extending through said support plate, by means of an optically transparent adhesive cured by the application of electromagnetic radiation, each said surface portion of said support plate being perpendicular to the optical axis of its adjacent lenslet and said adhesive being provided between said one surface of each said lenslet and each said surface portion of said support plate.
Claim 12
Dependent Claim
113 words
An assembly comprising a support plate with an array of lenslets made from optically refractive material mounted thereon, the support plate being substantially optically transparent at least in the regions adjacent the lenslets, the said lenslets each being fixed along one surface to a surface portion of said support plate with its optical axis extending through said support plate, by means of an optically transparent adhesive cured by the application of electromagnetic radiation, each said surface portion of said support plate being perpendicular to the optical axis of its adjacent lenslet and said adhesive being provided between said one surface of each said lenslet and each said surface portion of said support plate.
Claim 13
Dependent Claim
20 words
An assembly according to claim 10 wherein said adhesive is one which is cured by the application of ultra-violet light.
Claim 14
Dependent Claim
121 words
A photocomposing machine having means for positioning a photosensitive element, a character font carrying an array of characters, means for illuminating said font to produce beams of light carrying information concerning the respective characters, an assembly according to claim 10 in which the mutual spacing of the lenslets on the support plate corresponds to the mutual spacing of the characters of said font, the array of lenslets being disposed in a plane forward of the character font and arranged so that each of said beams can pass through a respective lenslet, an optical system for focusing said beams from said lenslets to project images of said characters onto said photosensitive elements, and means for selecting the characters to be so projected.
Claim 15
Dependent Claim
75 words
A photocomposing machine according to claim 12 wherein each lenslet is displaced from its respective character in the font by a distance corresponding to its focal length so that said lenslets collimate the respective beams, wherein the optical system is adapted to focus said beams to project said images of the characters at a single common image position, and wherein means are provided for displacing said photosensitive element relative to said single common image position.
Claim 16
Independent Claim
192 words
A method of making an assembly comprising a support plate with an array of lenslets made from optically refractive material mounted thereon, the support plate being substantially optically transparent at least in the regions adjacent the lenses, the method including, in respect of each lenslet, the steps of: positioning the lenslet on the plate with a quantity of adhesive therebetween, the adhesive being curable by electromagnetic radiation in a given wavelength range; checking that the lenslet is in a required position relative to the support plate by observing an image formed in an image plane by an optical system including the lenslet of a separate reference mark for each lenslet, said reference mark being one of an array of reference marks formed on a master matrix which is held fixed relative to the support plate; adjusting the position of the lenslet on the support plate until the observed image is located in a predetermined manner with respect to fixed reference data; and applying, after said checking and adjusting steps, electromagnetic radiation within said wavelength range to the adhesive through the lens to cure the adhesive and fix the lenslet to the plate.
Claim 17
Independent Claim
192 words
A method of making an assembly comprising a support plate with an array of lenslets made from optically refractive material mounted thereon, the support plate being substantially optically transparent at least in the regions adjacent the lenses, the method including, in respect of each lenslet, the steps of: positioning the lenslet on the plate with a quantity of adhesive therebetween, the adhesive being curable by electromagnetic radiation in a given wavelength range; checking that the lenslet is in a required position relative to the support plate by observing an image formed in an image plane by an optical system including the lenslet of a separate reference mark for each lenslet, said reference mark being one of an array of reference marks formed on a master matrix which is held fixed relative to the support plate; adjusting the position of the lenslet on the support plate until the observed image is located in a predetermined manner with respect to fixed reference data; and applying, after said checking and adjusting steps, electromagnetic radiation within said wavelength range to the adhesive through the lens to cure the adhesive and fix the lenslet to the plate.
Claim 18
Dependent Claim
69 words
A method according to claim 14 wherein said optical system also includes a converging lens which is common to the optical systems including the respective lenslets, and which focuses said images of said marks in said image plane, said lenslets being adjusted to cause the images of the respective reference marks to be positioned at a common image position defined by said fixed reference data, in said image plane.
Claim 19
Dependent Claim
32 words
A method according to claim 15 in which the lenslets form respective collimated beams carrying information concerning the respective reference marks, from which beams the common converging lens forms the respective images.
Claim 20
Dependent Claim
24 words
A method according to claim 14 wherein the reference marks comprise cross points of a grid of fine lines carried by the master matrix.
References Cited (Backward Citations)
US2382660A
Cited
US2652755A
Cited
US2917980A
Cited
US2919626A
Cited
US2905068A
Cited
US3618487A
Cited
US3687557A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-15 | 1982-07-17 | 1983-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-15 | 1986-07-17 | 1987-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-15 | 1990-07-17 | 1991-01-16 | $7700.00 | Window Closed / Lapsed |