Resin erecting lens array and method for fabricating the same
AssigneeNippon Sheet Glass Co., Ltd.
InventorsHiroyuki Nemoto, Yoshiyuki Uemura
Life of this patent
Estimating the term…
Abstract
A resin erecting lens array is fabricated by forming a coating of silicon dioxide compound on the surface of each of molded resin lens plates, forming an aperture stop for each micro-lens on the surface of each resin lens plate, applying an adhesive on end portions of each resin lens plate, spreading out the adhesive into the space between the resin lens plates being placed on top of one another, aligning an optical axis of each micro-lens on the resin lens plates, inserting heat-melting resin pins into the pin-insert holes of the resin lens plate, and melting at least one end of each resin pin to secure the resin lens plates together.
Claims25
A method for fabricating a resin erecting lens array constructed of two or more resin lens plates being placed on top of one another, where each of resin lens plate is formed by an injection molding and is provided as a plate on which spherical or aspherical micro-lenses are arranged at established intervals, comprising the steps of:
- forming an aperture stop for a spherical or aspherical surface of each lens on the surface of the resin lens plate;
- applying an adhesive on protruded portions and in recessed portions formed on the end portions of the resin lens plate;
- spreading out the adhesive into the space between the adjacent resin lens plates;
- aligning an optical axis of each lens of the two or more resin plates;
- and
- hardening the adhesive.
A method for fabricating a resin erecting lens array constructed of two or more resin lens plates being placed on top of one another, where each of resin lens plate is formed by an injection molding and is provided as a plate on which spherical or aspherical micro-lenses are arranged at established intervals, comprising the steps of:
- forming an aperture stop for a spherical or aspherical surface of each lens on the surface of the resin lens plate;
- applying an adhesive on protruded portions and in recessed portions formed on the end portions of the resin lens plate;
- spreading out the adhesive into the space between the adjacent resin lens plates;
- aligning an optical axis of each lens of the two or more resin lens plates;
- hardening the adhesive;
- and
- inserting heat-melting resin pins into the pin-insert holes of the resin lens plates, which are formed in the predetermined positions on the end portions of the resin lens plate, and melting at least one end of each resin pin.
A method for fabricating a resin erecting lens array constructed of two or more resin lens plates being placed on top of one another, where each of resin lens plate is formed by an injection molding and is provided as a plate on which spherical or aspherical micro-lenses are arranged at established intervals, comprising the steps of:
- forming an aperture stop for a spherical or aspherical surface of each lens on the surface of the resin lens plate;
- aligning an optical axis of each lens of the two or more resin lens plates;
- and
- inserting heat-melting resin pins into the pin-insert holes of the resin lens plates, which are formed in the predetermined positions on the end portions of the resin lens plate, and melting at least one end of each resin pin.
A method for fabricating a resin erecting lens array constructed of two or more resin lens plates being placed on top of one another, where each of resin lens plate is formed by an injection molding and is provided as a plate on which spherical or aspherical micro-lenses are arranged at established intervals, comprising the steps of:
- inserting heat-melting resin pins into the pin-insert holes formed on the end portions of one of the resin lens plates at the time of placing two or more resin lens plates on top of one another;
- and
- placing another resin lens plate on the resin lens plate using the resin pins as guide members.
A method for fabricating a resin erecting lens array constructed of two or more resin lens plates being placed on top of one another, where each of resin lens plate is formed by an injection molding and is provided as a plate on which spherical or aspherical micro-lenses are arranged at established intervals, comprising the steps of:
- preparing two or more resin lens plates;
- and
- placing the adjacent resin lens plates one on top of the other in such a manner that the difference between the warped shapes of the opposite surfaces of the adjacent resin lens plates is small almost at the center of each of the adjacent resin lens plates, compared with other portions.
A method for fabricating a resin erecting lens array constructed of two or more resin lens plates being placed on top of one another, where each of resin lens plate is formed by an injection molding and is provided as a plate on which spherical or aspherical micro-lenses are arranged at established intervals, comprising the steps of:
- preparing two or more resin lens plates;
- and
- placing the two or more resin lens plates on top of one another and cementing the two or more resin lens plates together using a photo-curing adhesive to minimize displacements of the resin lens plates to be caused by deformations in the resin lens plates before or after the adhesion.
A method for fabricating a resin erecting lens array constructed of two or more resin lens plates being placed on top of one another, where each of resin lens plate is formed by an injection molding and is provided as a plate on which spherical or aspherical micro-lenses are arranged at established intervals, comprising the steps of:
- inserting heat-melting resin pins into the pin-insert holes formed at the predetermined positions of the end portions of each of the resin lens plates at the time of placing two or more resin lens plates on top of one another;
- and
- melting at least one end of each of the resin pins, followed by the application of pressure on both ends of each of the resin pins to mechanically held the resin lens plates together.
A method for fabricating a resin erecting lens array constructed of two or more resin lens plates being placed on top of one another, where each of resin lens plate is formed by an injection molding and is provided as a plate on which spherical or aspherical micro-lenses are arranged at established intervals, comprising the steps of:
- preparing two or more resin lens plates;
- and
- placing the resin lens plates on top of one another by performing directional alignment using pin marks which are impressions caused by ejector pins which eject a molded body from a die at the time of completing an injection molding, and/or using a gate mark which is an impression of the gate for injecting an injection molding resin into the die at the time of placing two or more resin lens plates on top of one another.
A resin lens plate formed by an injection molding, where spherical or aspherical micro-lenses are arranged on a plate at established intervals, comprising:
- pin-insert holes are formed in end portions through which heat-melting resin pins can be inserted for mechanically securing two or more resin lens plates together.
A resin lens plate formed by an injection molding, where spherical or aspherical micro-lenses are arranged on a plate at established intervals, comprising:
- recessed and protruded portions are formed on end portions for increasing the contact area of an adhesive.
A resin lens plate formed by an injection molding, where spherical or aspherical micro-lenses are arranged on a plate at established intervals, comprising:
- a groove extending from a lens-forming region to the side of the resin lens plate is formed for keeping the pressure in the opposite lens-forming regions at the atmospheric pressure at the time of constructing a resin erecting lens array by placing two or more resin lens plates on top of one another.
A resin lens plate formed by an injection molding, where spherical or aspherical micro-lenses are arranged on a plate at established intervals, comprising:
- an aperture stop is formed for a spherical or aspherical surface of each micro-lens.
A resin lens plate formed by an injection molding, where spherical or aspherical micro-lenses are arranged on a plate at established intervals, comprising:
- a low reflective film is formed on the surface of the resin lens plate, and an aperture stop is formed in the low reflective film for a spherical or aspherical surface of each micro-lens.
Dependencies are inferred from the claim text.