JP2012027331A - Alignment method of composite optical element and alignment device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an alignment method of a composite optical element and an alignment device therefor, capable of completing a composite optical element with high alignment accuracy by minimizing eccentricity of optical base materials even with low elastic modulus of the optical base materials or a thick polymerizable resin layer between the optical base materials.SOLUTION: In an alignment method of a composite optical element used in a manufacturing process for completing the composite optical element in a state of a polymerizable resin layer 16 sandwiched between optical base materials 12, 14, a plurality of eccentricity adjustment steps are included for applying an adjustment load which moves each optical base material vertically or obliquely with respect to a reference optical axis L0 to coincide optical centers c1 to c4 of the respective optical base materials with a reference optical axis. While promoting polymerization reaction of the polymerizable resin layer, at least one or more eccentricity adjustment steps are carried out for a predetermined period of time within a polymerization reaction time in which polymerization ratio is predicted to be from 0% to 70%. When the polymerization reaction time in which the polymerization ratio is predicted to be more than 70% elapses, application of the adjustment load to the optical base materials in the eccentricity adjustment steps is released.

Description

  The present invention relates to a method of aligning a composite optical element that adjusts the eccentricity of an optical substrate in the production of a composite optical element having an optical substrate on at least one side of a polymerizable resin layer and a polymerizable resin layer, and the method The present invention relates to an alignment device.

  For example, in order to maintain optical performance in a composite optical element obtained by bonding two or more optical substrates (lenses) via a polymerizable resin (for example, an energy curable resin) It is necessary to align the optical axis of the optical substrate with high accuracy. As a conventional example of the alignment method of such a composite optical element, for example, there is one described in Patent Document 1 below.

  In the alignment method of a composite optical element described in Patent Document 1, two optical substrates are formed with an energy curable resin layer serving as an uncured adhesive interposed between two optical substrates. After adjusting the position (thickness direction and optical axis deviation of the two optical base materials) and adjusting the position (eccentricity adjustment), the optical axis direction with respect to the optical base material is used to fix the adjusted position. The energy curable resin layer is cured by applying light energy to the uncured energy curable resin layer while applying a load along the direction (hereinafter referred to as “holding load” in the present application).

JP 2007-86611 A

However, the conventional method for aligning a composite optical element as described in Patent Document 1 has the following problems.
Generally, when an energy curable resin that is an adhesive is cured, stress due to curing shrinkage occurs. Here, when the volume of the energy curable resin layer in the composite optical element is large, or when the optical substrate is made of a thermoplastic resin material instead of a glass material and has a low elastic modulus, the energy curable resin layer The stress due to curing shrinkage acts greatly on the optical base material, and the optical base material is greatly deformed (distorted).

  However, in the method of performing curing by irradiating light energy to the energy curable resin layer while applying a holding load after adjusting the eccentricity of the optical substrate, such as the method of manufacturing a composite optical element described in Patent Document 1, When the elastic modulus of the optical substrate is low, or when the energy curable resin layer interposed between the optical substrates is thick, the stress of curing shrinkage of the energy curable resin layer acts greatly during the curing of the energy curable resin. As a result, the position cannot be fixed with the holding load and the position is shifted, or stress is accumulated inside the optical base material, so that it is deformed into a shape having a refractive index distribution or a rotationally asymmetric shape. A composite optical element with high alignment accuracy in which the amount of eccentricity of the optical substrate is kept small cannot be obtained.

  The present invention has been made in view of the above-described conventional problems, and when the elastic modulus of the optical substrate is low, or the polymerizable resin layer such as an energy curable resin layer interposed between the optical substrates is thick. Even in such a case, an object is to provide a composite optical element alignment method and an alignment apparatus that can be completed as a composite optical element with high alignment accuracy while suppressing the eccentricity of the optical base material to be small. .

  In order to achieve the above object, the method for aligning a composite optical element according to the present invention is a state in which the polymerization rate is low at the position of the optical surface of the optical substrate between a plurality of predetermined members on which at least one side forms the optical substrate. An optical substrate is provided on at least one side of the polymerizable resin layer and the polymerizable resin layer, which is completed by promoting the polymerization reaction of the polymerizable resin layer with the polymerizable resin layer in between. In the alignment method of the composite optical element used in the manufacturing process of the composite optical element, in order to move each of the optical base materials in a direction perpendicular to or inclined with respect to a predetermined reference optical axis serving as a reference for decentering adjustment A plurality of decentering adjustment steps to apply each of the adjustment loads to match each of the optical cores of each of the optical substrates with the reference optical axis, and in advance, in the composite optical element with respect to the polymerization reaction time Polymerization in which a predicted value of the polymerization rate of the polymerizable resin layer is obtained and the polymerization rate is low at the position of the optical surface of the optical substrate between a plurality of predetermined members on which at least one side forms the optical substrate While promoting the polymerization reaction of the polymerizable resin layer with the resin layer sandwiched, the polymerization rate is 0% to 70% in the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time. % Of the eccentricity adjustment step for at least one optical substrate among all the eccentricity adjustment steps for all optical substrates in the composite optical element within a polymerization reaction time predicted to be between The polymerization reaction time elapses when the polymerization rate exceeds 70% in the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time. To come, it is characterized by releasing the application of the adjustment force for moving the said direction with respect to the optical substrate in all eccentricity adjusting step of performing while promoting the polymerization reaction of the polymerizable resin layer.

  Moreover, in the alignment method of the composite optical element of the present invention, the polymerization rate is between 0% and 70% in the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time. The polymerization resin layer is subjected to the decentering adjustment step for at least one optical substrate among all the decentering adjustment steps for all optical substrates in the composite optical element within the predicted polymerization reaction time. When carrying out the reaction while promoting the reaction, it is preferable to cancel the application of the adjustment load to the optical substrate in the eccentricity adjustment step one or more times.

  Moreover, in the alignment method of the composite optical element of the present invention, the polymerization rate is low at the position of the optical surface of the optical base material in advance between a plurality of predetermined members on which at least one side forms the optical base material. Using the test piece in a state of sandwiching the polymerizable resin layer, while promoting the polymerization reaction of the polymerizable resin layer in the test piece, each reference optical substrate in the test piece for each predetermined polymerization reaction time By measuring an adjustment load necessary to move in a direction perpendicular to or inclined with respect to the optical axis, at least of all eccentricity adjustment steps for all optical substrates in the composite optical element with respect to the polymerization reaction time In the step of adjusting the eccentricity with respect to one or more optical base materials, the optical base material in the composite optical element corresponding to the optical base material of the test piece is perpendicular to the reference optical axis or Obtaining the predicted value of the adjustment load necessary for moving in the oblique direction as a master curve of an appropriate adjustment load for the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element for the polymerization reaction time, It is preferable to control the adjustment load necessary for moving the composite optical element in the direction with respect to the optical base using the master curve.

  Further, in the alignment method of the composite optical element of the present invention, the decentering adjustment step for at least one optical substrate among all the eccentricity adjustment steps for all optical substrates in the composite optical element is performed by the polymerization. When the polymerization reaction of the polymerizable resin layer is promoted, it is preferable to use a heating step for heating the polymerizable resin layer in the eccentricity adjusting step.

  Further, in the alignment method of the composite optical element of the present invention, before the polymerization reaction of the polymerizable resin layer is promoted, all decentering adjustment steps for all optical substrates in the composite optical element are performed. preferable.

  Further, in the alignment method of the composite optical element of the present invention, the polymerization is performed at the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time while promoting the polymerization reaction of the polymerizable resin layer. It is preferable that all the eccentricity adjustment steps for all the optical base materials in the composite optical element are performed for a predetermined time within the polymerization reaction time expected to be between 0% and 70%.

  Further, the alignment method of the composite optical element according to the present invention is an energy curable type in which the polymerization rate is low at the position of the optical surface of the optical base material between a plurality of predetermined members whose at least one side forms the optical base material. The energy curable resin layer is completed by accelerating a polymerization reaction of the energy curable resin layer through light or heat energy irradiation to the energy curable resin layer with the resin layer sandwiched therebetween, In a method of aligning a composite optical element used in a manufacturing process of a composite optical element having an optical base on at least one side of the energy curable resin layer, each of the optical bases is a predetermined reference for decentering adjustment. Applying an adjustment load for moving the reference optical axis in a direction perpendicular to or inclined with respect to the reference optical axis, the respective optical cores of the respective optical substrates coincide with the reference optical axis. A plurality of eccentricity adjusting steps, and an energy irradiation step of irradiating the energy curable resin layer in a state where the polymerization rate is low with light or heat energy, and in advance in the composite optical element for energy irradiation time A predicted value of the polymerization rate of the energy curable resin layer is obtained, and at least one side has a low polymerization rate at the position of the optical surface of the optical substrate between a plurality of predetermined members forming the optical substrate. Polymerization of the energy curable resin layer in the composite optical element with respect to the energy irradiation time while promoting the polymerization reaction of the energy curable resin layer through the energy irradiation step with the energy curable resin layer sandwiched therebetween. Within the energy irradiation time where the polymerization rate is predicted to be between 0% and 70% in the predicted value of the rate, The decentering adjustment step for at least one optical base material is performed for a predetermined time among all the decentering adjustment steps for all optical base materials in the composite optical element, and the energy curing in the composite optical element for the energy irradiation time. When the energy irradiation time when the polymerization rate is predicted to exceed 70% in the predicted value of the polymerization rate of the mold resin layer elapses, while promoting the polymerization reaction of the energy curable resin layer through the energy irradiation step In all the eccentricity adjustment steps to be performed, the application of the adjustment load for moving the optical base material in the direction is canceled.

  Moreover, in the alignment method of the composite optical element of the present invention, the manufacturing process of the composite optical element including another optical base so as to face the optical surface of the optical base with the energy curable resin layer interposed therebetween Is preferably used.

  Moreover, in the alignment method of the composite optical element of the present invention, the polymerization rate is between 0% and 70% in the predicted value of the polymerization rate of the energy curable resin layer in the composite optical element with respect to the energy irradiation time. Within the energy irradiation time predicted to be, the eccentricity adjustment step for at least one optical substrate among all the eccentricity adjustment steps for all optical substrates in the composite optical element is performed via the energy irradiation step. It is preferable to cancel the application of the adjustment load to the optical substrate in the eccentricity adjusting step once or more when the polymerization is performed while promoting the polymerization reaction of the energy curable resin layer.

  Moreover, in the alignment method of the composite optical element of the present invention, the polymerization rate is low at the position of the optical surface of the optical base material in advance between a plurality of predetermined members on which at least one side forms the optical base material. Using a test piece in a state where an energy curable resin layer is sandwiched, by irradiating light or heat energy to the test piece, while promoting the polymerization reaction of the energy curable resin layer in the test piece, predetermined Measuring the adjustment load required to move each optical substrate in the test piece in a direction perpendicular or inclined with respect to the reference optical axis at every energy irradiation time of In the eccentricity adjustment step for at least one optical substrate among all the eccentricity adjustment steps for all optical substrates in the optical element, The predicted value of the adjustment load required to move the optical substrate in the composite optical element corresponding to the optical substrate of the specimen in the vertical direction or the tilt direction with respect to the reference optical axis is calculated with respect to the energy irradiation time. Adjustment load required to obtain a master curve of an appropriate adjustment load for the predicted value of the polymerization rate of the energy curable resin layer in the composite optical element, and to move in the direction relative to the optical substrate in the composite optical element Is preferably controlled using the master curve.

  Further, in the alignment method of the composite optical element of the present invention, the decentering adjustment step for at least one optical substrate among all the decentering adjustment steps for all the optical substrates in the composite optical element is performed as the energy. When the polymerization reaction of the polymerizable resin layer is promoted through the irradiation step, it is preferable to use a heating step of heating the energy curable resin layer in the eccentricity adjustment step.

  Further, in the alignment method of the composite optical element of the present invention, before promoting the polymerization reaction of the energy curable resin layer through the energy irradiation step, It is preferable to perform the eccentricity adjusting step.

  Moreover, in the alignment method of the composite optical element of the present invention, the energy curable resin in the composite optical element with respect to the energy irradiation time while promoting the polymerization reaction of the energy curable resin layer through the energy irradiation step. All the eccentricity adjustment steps for all optical substrates in the composite optical element are predetermined within an energy irradiation time in which the polymerization rate is predicted to be between 0% and 70% in the predicted value of the polymerization rate of the layer. Time is preferred.

  The aligning device of the composite optical element according to the present invention is a polymerizable resin having a low polymerization rate at the position of the optical surface of the optical substrate between a plurality of predetermined members having at least one side forming the optical substrate. A composite optical element comprising an optical substrate on at least one side of the polymerizable resin layer and the polymerizable resin layer, which is completed by accelerating a polymerization reaction of the polymerizable resin layer with the layers sandwiched therebetween. Applying an adjustment load for moving each of the optical base materials in a vertical direction or an inclination direction with respect to a predetermined reference optical axis serving as a reference for decentering adjustment in the alignment device for composite optical elements used in the manufacturing process The optical base between a plurality of decentering adjusting means for matching each optical core of each of the optical bases with the reference optical axis, and a plurality of predetermined members whose at least one side forms the optical base. Material The polymerization in the composite optical element with respect to a previously determined polymerization reaction time while accelerating the polymerization reaction of the polymerizable resin layer in a state where a polymerizable resin layer in a state where the polymerization rate is low is sandwiched between academic positions. Using the predicted value of the polymerization rate of the polymerizable resin layer, it is predicted that the polymerization rate is between 0% and 70% in the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time. Within the polymerization reaction time, at least one of the eccentricity adjustment means for all the optical base materials in the composite optical element via the eccentricity adjustment means for the eccentricity adjustment means for at least one optical base material. A polymerization reaction in which the core is adjusted for a predetermined time and the polymerization rate is predicted to exceed 70% in the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time. When an interval elapses, applying an adjustment load for moving in the direction relative to the optical substrate in the eccentricity adjustment through all the eccentricity adjustment means performed while promoting the polymerization reaction of the polymerizable resin layer. It is characterized by having an eccentricity adjustment operation control means for controlling to release.

  In the aligning device for the composite optical element of the present invention, the eccentricity adjusting operation control means has a polymerization rate of 0 in a predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time. At least one of the eccentricity adjustments through all the eccentricity adjusting means for all the optical substrates in the composite optical element within a polymerization reaction time predicted to be between 70% and 70%. The adjustment load on the optical base material in the eccentricity adjustment via the eccentricity adjusting means when performing the eccentricity adjustment via the eccentricity adjustment means for the base material while promoting the polymerization reaction of the polymerizable resin layer It is preferable to control so that the application of is canceled once or more.

  In the composite optical element alignment apparatus of the present invention, the eccentricity adjustment operation control means is appropriate for the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time acquired in advance. It is preferable to control the adjustment load necessary for moving the optical base material in the direction in the eccentricity adjustment via the eccentricity adjustment means by using a master curve of the adjustment load.

  The aligning device of the composite optical element of the present invention further includes a heating means for heating the polymerizable resin layer, and the eccentricity adjusting operation control means is provided for all optical substrates in the composite optical element. When performing the eccentricity adjustment through the eccentricity adjustment means for at least one optical substrate among the eccentricity adjustments through all the eccentricity adjustment means while promoting the polymerization reaction of the polymerizable resin layer, In the eccentricity adjustment via the eccentricity adjusting means, it is preferable to control so that the polymerizable resin layer is heated together via the heating means.

  Further, in the aligning device of the composite optical element of the present invention, the eccentricity adjusting operation control means is configured to perform all of the all optical substrates in the composite optical element before promoting the polymerization reaction of the polymerizable resin layer. It is preferable to perform control so that eccentricity adjustment is performed via the eccentricity adjusting means.

  In the aligning device for a composite optical element according to the present invention, the eccentricity adjusting operation control means accelerates the polymerization reaction of the polymerizable resin layer, and the polymerizable resin in the composite optical element with respect to the polymerization reaction time. The polymerization rate is predicted to be between 0% and 70% in the predicted value of the polymerization rate of the layer, and all the eccentricity adjusting means for all the optical substrates in the composite optical element are passed through. It is preferable to perform control so that the eccentricity adjustment is performed for a predetermined time.

  Further, the aligning device of the composite optical element according to the present invention is an energy curable type in which the polymerization rate is low at the position of the optical surface of the optical base material between a plurality of predetermined members whose at least one side forms the optical base material. The energy curable resin layer is completed by accelerating a polymerization reaction of the energy curable resin layer through light or heat energy irradiation to the energy curable resin layer with the resin layer sandwiched therebetween, In a composite optical element alignment device used in a manufacturing process of a composite optical element having an optical base on at least one side of the energy curable resin layer, each of the optical bases is used as a reference for decentering adjustment. Applying an adjustment load for moving the reference optical axis in a direction perpendicular to or inclined with respect to the reference optical axis, the respective optical cores of the respective optical substrates coincide with the reference optical axis. A plurality of eccentricity adjusting means, energy irradiating means for irradiating light or heat energy to the energy curable resin layer having a low polymerization rate, and a plurality of predetermined members at least one of which forms an optical substrate The energy is obtained by irradiating light or heat energy through the energy irradiation means in a state where an energy curable resin layer having a low polymerization rate is sandwiched between the optical surfaces of the optical substrate between Using the predicted value of the polymerization rate of the energy curable resin layer in the composite optical element for the energy irradiation time determined in advance while promoting the polymerization reaction of the curable resin layer, the composite optical for the energy irradiation time Energy irradiation in which the polymerization rate is predicted to be between 0% and 70% in the predicted value of the polymerization rate in the device The eccentricity adjustment via the eccentricity adjustment means for at least one of the optical substrates is predetermined among the eccentricity adjustments via all the eccentricity adjustment means for all the optical substrates in the composite optical element. The energy irradiating means when the energy irradiation time elapses and the polymerization rate is predicted to exceed 70% in the predicted value of the polymerization rate of the energy curable resin layer in the composite optical element with respect to the energy irradiation time. By irradiating light or heat energy through the substrate, and moving in the direction relative to the optical substrate in the eccentricity adjustment through all the eccentricity adjustment means performed while promoting the polymerization reaction of the energy curable resin layer. It is characterized by having an eccentricity adjustment operation control means for controlling so as to cancel the application of the adjustment load.

  Moreover, in the alignment apparatus of the composite optical element of the present invention, it is preferably used in the manufacturing process of the composite optical element provided with another optical substrate so as to face each other with the energy curable resin layer interposed therebetween.

  In the composite optical element alignment apparatus of the present invention, the eccentricity adjustment operation control means has a polymerization rate in a predicted value of the polymerization rate of the energy curable resin layer in the composite optical element with respect to the energy irradiation time. Within an energy irradiation time predicted to be between 0% and 70%, at least one of the eccentricity adjustments through all the eccentricity adjustment means for all the optical base materials in the composite optical element. When performing eccentricity adjustment via the eccentricity adjusting means for the optical substrate while accelerating the polymerization reaction of the energy curable resin layer by irradiating light or heat energy via the energy irradiation means, It is preferable to control so that the application of the adjustment load to the optical base material in the eccentricity adjustment via the eccentricity adjusting means is released once or more. There.

  In the composite optical element alignment apparatus of the present invention, the eccentricity adjustment operation control means is configured for the predicted value of the polymerization rate of the energy curable resin layer in the composite optical element with respect to the energy irradiation time acquired in advance. It is preferable to control an adjustment load necessary for moving the optical base material in the direction in the eccentricity adjustment via the eccentricity adjustment means using a master curve of an appropriate adjustment load.

  In the aligning device for a composite optical element according to the present invention, the composite optical element further includes a heating means for heating the energy curable resin layer, and the eccentricity adjusting operation control means includes all optical base materials in the composite optical element. When performing the eccentricity adjustment via the eccentricity adjustment means for at least one optical substrate among the eccentricity adjustments via all the eccentricity adjustment means for the above while promoting the polymerization reaction of the energy curable resin layer In addition, in the eccentricity adjustment via the eccentricity adjusting means, it is preferable to control so that the polymerizable resin layer is also heated via the heating means.

  Further, in the aligning device of the composite optical element of the present invention, the eccentricity adjustment operation control means applies to all optical substrates in the composite optical element before promoting the polymerization reaction of the energy curable resin layer. It is preferable to perform control so that eccentricity adjustment is performed via all eccentricity adjusting means.

  In the aligning device of the composite optical element of the present invention, the eccentricity adjusting operation control means promotes the polymerization reaction of the energy curable resin layer, and the polymerization property of the composite optical element with respect to the polymerization reaction time. All the eccentricity adjusting means for all the optical substrates in the composite optical element are within the polymerization reaction time predicted to be between 0% and 70% in the predicted value of the polymerization rate of the resin layer. It is preferable to control so that the eccentricity adjustment is performed for a predetermined time.

  According to the present invention, even when the elastic modulus of the optical substrate is low or when the polymerizable resin layer such as an energy curable resin layer interposed between the optical substrates is thick, the eccentricity of the optical substrate is reduced. A composite optical element alignment method and an alignment apparatus that can be completed as a composite optical element with high alignment accuracy while suppressing it are obtained.

It is a graph which shows an example of the polymerization rate of energy curable resin with respect to the energy irradiation time in a composite optical element. It is a graph which shows the relationship between the energy irradiation time in a composite optical element, and the load (adjustment load) required in order to move an optical base material. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram showing the shape of an optical substrate to be bonded in the method for adjusting the eccentricity of a composite optical element according to the first embodiment of the present invention, where (a) shows a state before bonding, and (b) shows bonding. FIG. It is sectional drawing which shows the eccentric state of the 1st optical base material and the 2nd optical base material before bonding together on both sides of energy curable resin. It is explanatory drawing which shows the whole structure of the alignment apparatus of the composite optical element concerning 1st embodiment of this invention. It is a figure which shows the flowchart regarding eccentric adjustment. It is explanatory drawing of the adjustment method of an optical core, (a) is a figure which shows the state from which the 1st optical core c1 in the 1st optical base material shifted | deviated from the reference optical axis L0, (b) is a 1st optical base material. (C) shows a state in which the first optical core c1 is aligned with the reference optical axis L0 by moving in the xy-axis direction, and the second optical core c2 is shifted from the reference optical axis L0. ) Is a diagram showing a state in which the first optical substrate is moved in the direction inclined by θ with respect to the reference optical axis L0, and the second optical core c2 is made to coincide with the reference optical axis L0, The figure which shows the state from which the 3rd optical core c3 in the 2nd optical base material shifted | deviated from the reference | standard optical axis L0, (e) moves a 2nd optical base material to an xy-axis direction, and the 3rd optical core c3. Is a state in which the fourth optical core c4 is shifted from the reference optical axis L0, and (f) is a diagram showing the second optical base material at the reference optical axis L0. It is moved in a direction θ inclined to a diagram showing a state in which to match the fourth optical core c4 to reference optical axis L0. Eccentricity in Examples (Example 1-1 to Example 1-3) and Comparative Examples (Comparative Example 1-1 to Comparative Example 1-3) of the adjusting method using the composite optical element adjusting device of the first embodiment It is a graph which shows the application pattern of adjustment load, (a) is a graph which shows the application pattern of eccentric adjustment load in Comparative Example 1-1, (b) is a graph which shows the application pattern of eccentric adjustment load in Comparative Example 1-2, (c) is a graph showing the application pattern of the eccentricity adjustment load in Example 1-1, (d) is a graph showing the application pattern of the eccentricity adjustment load in Example 1-2, and (e) is in Example 1-3. The graph which shows the application pattern of eccentricity adjustment load, (f) is a graph which shows the application pattern of eccentricity adjustment load in Comparative Example 1-3. Eccentricity in Examples (Example 2-1 to Example 2-4) and Comparative Examples (Comparative Example 2-1 to Comparative Example 2-2) of the adjustment method using the composite optical element adjustment apparatus of the first embodiment. The graph which shows the application pattern of adjustment load, (a) is the graph which shows the application pattern of the eccentric adjustment load in Comparative Example 2-1, (b) is the graph which shows the application pattern of the eccentric adjustment load in Example 2-1, (c) is a graph showing an application pattern of the eccentricity adjustment load in Example 2-2, (d) is a graph showing an application pattern of the eccentricity adjustment load in Example 2-3, and (e) is in Example 2-4. The graph which shows the application pattern of the eccentricity adjustment load, (f) is a graph which shows the application pattern of the eccentricity adjustment load in the comparative example 2-2. It is explanatory drawing which shows the whole structure of the alignment apparatus 20 of the composite optical element concerning 2nd embodiment of this invention. It is explanatory drawing which shows the whole structure of the alignment apparatus 20 of the composite optical element concerning 3rd embodiment of this invention.

Prior to the description of the embodiments, the characteristic configuration and operational effects of the present invention will be described.
The alignment method of the composite optical element of the present invention is a composite used in a manufacturing process of a composite optical element having an optical substrate on at least one side of a polymerizable resin layer such as an energy curable resin layer and a polymerizable resin layer. In the alignment method of the optical element, an adjustment load for moving each optical base material in a vertical direction or an inclination direction with respect to a predetermined reference optical axis serving as a reference for eccentricity adjustment is applied to each optical base. A plurality of decentering adjustment steps for aligning each optical core of the material with the reference optical axis, and calculating in advance a predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time, at least one of them The polymerization reaction of the polymerizable resin layer is promoted with a polymerizable resin layer having a low polymerization rate sandwiched between the optical surfaces of the optical substrate between a plurality of predetermined members that form the optical substrate. While polymerization reaction time In the polymerization reaction time in which the polymerization rate is predicted to be between 0% and 70% in the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element, all of all the optical base materials in the composite optical element The eccentricity adjusting step for at least one optical substrate is performed for a predetermined time in the eccentricity adjusting step, and the polymerization rate is 70% in the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time. When the polymerization reaction time predicted to exceed is exceeded, applying an adjustment load for moving in the direction relative to the optical substrate in all eccentricity adjustment steps performed while promoting the polymerization reaction of the polymerizable resin layer To release.

  The composite optical element manufacturing apparatus of the present invention is used in a manufacturing process of a composite optical element including an optical substrate on at least one side of a polymerizable resin layer such as an energy curable resin layer and a polymerizable resin layer. In the aligning device of the composite optical element, each optical substrate is applied with an adjustment load for moving the respective optical base material in a vertical direction or an inclination direction with respect to a predetermined reference optical axis serving as a reference for decentering adjustment. A polymerization rate at the position of the optical surface of the optical substrate between a plurality of eccentricity adjusting means for matching each optical core of the substrate with the reference optical axis and a plurality of predetermined members having at least one side forming the optical substrate The predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the previously determined polymerization reaction time while accelerating the polymerization reaction of the polymerizable resin layer while sandwiching the polymerizable resin layer in a low state. Use polymerization reaction For all optical substrates in the composite optical element within the polymerization reaction time predicted to be between 0% and 70% in the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to time A polymerizable resin layer in a composite optical element that performs a decentration adjustment via a decentering adjustment means for at least one optical substrate among decentering adjustments via all decentering adjustment means for a predetermined time, and a polymerization reaction time. Eccentricity via all eccentricity adjusting means performed while promoting the polymerization reaction of the polymerizable resin layer when the polymerization reaction time predicted to exceed 70% in the predicted value of the polymerization rate of There is provided an eccentricity adjustment operation control means for controlling so as to cancel the application of the adjustment load for moving the optical base material in the direction in the adjustment.

  The present applicant has derived the present invention from the relationship between the polymerization rate of the polymerizable resin and the polymerization reaction time, and the relationship between the polymerization reaction time and the adjustment load necessary to move the optical substrate. Here, the derivation process will be described below with the light energy curable resin as the polymerizable resin and the polymerization reaction time as the light energy irradiation time for the light energy curable resin. In addition, here, for the sake of convenience, the composite optical element will be described using a type including an energy curable resin layer between two optical substrates.

(Function)
The irradiation time of light energy and the polymerization rate of the energy curable resin have a relationship as shown in FIG. FIG. 1 is a graph showing the polymerization rate (vertical axis) of an energy curable resin with respect to the irradiation time (horizontal axis) of light energy. In FIG. 1, the polymerization rate of the energy curable resin rapidly increases immediately after the start of irradiation of light energy, but the light energy irradiation time is a time corresponding to the polymerization rate of the energy curable resin of about 70% (in FIG. 1). In the example, when 60 seconds have elapsed, the rate of increase in the polymerization rate of the energy curable resin gradually decreases. The polymerization rate of the energy curable resin with respect to the light energy irradiation time depends on the light energy irradiation speed, the environmental temperature, the atmosphere components, and the like. Therefore, by arbitrarily adjusting these conditions, the rate of increase of the polymerization rate of the energy curable resin per unit irradiation time can be changed, or the polymerization rate of the energy curable resin itself can be lowered.

  Further, the irradiation time of light energy and the load (adjustment load) necessary to move the optical base material in the eccentricity adjustment direction have a relationship as shown in FIG. FIG. 2 is a graph showing the adjustment load (vertical axis) necessary for moving the optical base material in the eccentricity adjustment direction with respect to the irradiation time of light energy (horizontal axis). In FIG. 2, the load is a load (holding load) applied in the direction along the reference optical axis to the optical substrate in order to maintain the position of the two optical substrates having the energy curable resin layer between them. Not shown (load) (adjustment load) necessary to move one of the two optical substrates in a direction perpendicular to the reference optical axis (shear direction) that is one of the eccentricity adjustment directions (shear direction) Only shown. The holding load is constant regardless of the passage of light energy irradiation time. Here, the adjustment load shows a rapid change with respect to the light energy irradiation time as in FIG. 1, and in particular, the light energy irradiation time is a time corresponding to a polymerization rate of about 70% of the energy curable resin (light energy). When the load is applied when the time corresponding to the stage when the polymerization rate of the energy curable resin has further increased, the energy curable resin layer is peeled off and combined. The optical element will be destroyed. This is because, when the degree of polymerization of the energy curable resin exceeds about 70%, the elastic modulus of the energy curable resin layer becomes very high. Therefore, when an adjustment load (external stress) is applied, stress is applied to the energy curable resin layer. This is considered to be due to the large occurrence and destruction of the interface between the energy curable resin and the optical substrate. On the other hand, when the degree of polymerization of the energy curable resin is less than 70%, the energy curable resin layer has a strong viscosity term in the viscoelastic characteristics (low elastic modulus). Even if stress is generated in the energy curable resin layer by applying an adjustment load from the outside via an optical substrate during curing, the generated stress is low and distortion of the energy curable resin layer can be relaxed. It is done.

  From the relationship shown in FIG. 1 and FIG. 2, the polymerization rate of the energy curable resin with respect to the light energy irradiation time under the same light energy irradiation conditions and the adjustment load corresponding to this polymerization rate are obtained. That is, it is possible to obtain in advance an adjustment load that is sufficient for movement for eccentricity adjustment in an arbitrary light energy irradiation time.

  When adjusting the eccentricity, for example, the composite optical system is coaxial with the irradiation optical axis of the light energy irradiation means for irradiating light energy to the composite optical element in an incomplete state in which the energy curable resin layer is sandwiched between optical substrates. If a collimated light irradiating means for irradiating the element with collimated light and a collimated light misalignment detector for detecting the positional deviation on the optical axis of the collimated light from the collimated light irradiating means are arranged, the optical eccentricity can be reduced. The axial coma can be calculated during light energy irradiation. Then, based on the calculated eccentricity amount, the eccentricity adjustment is performed on at least one of the four optical cores as the composite optical element using the eccentricity adjusting unit described later during the light energy irradiation. Can be done.

Here, the application pattern of the adjustment load for eccentricity adjustment in the light energy irradiation time and the axial top of the composite optical element after molding (after curing of the energy curable resin) (the eccentric amount of the entire composite optical element) As a result of experiments on the relationship, the following could be confirmed.
The following three patterns were tested as the adjustment load application pattern.
(1) First load application pattern: a pattern in which an adjustment load for adjusting eccentricity is applied only when the polymerization rate of the energy curable resin layer is 0%. That is, the first load application pattern is the above-described patent document. 1 is a load application pattern in which an adjustment load for eccentricity adjustment is applied only before light energy irradiation to the energy curable resin.
(2) Second load application pattern: a pattern in which an adjustment load for eccentricity adjustment is continuously applied during the irradiation time of light energy. That is, the second load application pattern is an adjustment load for eccentricity adjustment. Is a load application pattern in which the application is continuously increased in accordance with the increase in the polymerization rate of the energy curable resin layer.
(3) Third load application pattern: a pattern in which an adjustment load for adjusting eccentricity is intermittently applied during the irradiation time of light energy. That is, the third load application pattern is a polymerization rate of the energy curable resin layer. While increasing (during molding), once the application of the adjustment load for eccentricity adjustment is canceled (adjustment load is set to zero), and then the adjustment load for eccentricity adjustment is again applied to the light energy. It is a load application pattern which increases corresponding to the polymerization rate which increases with progress of irradiation time.

In the first to third load application patterns, the amount of on-axis coma of the composite optical element after molding is the smallest in the third load application pattern, then the second load application pattern is small, and the first load application The pattern became the largest. From these results, it was found that the optical performance after molding of the composite optical element is the highest in the method of aligning the composite optical element using the third load application pattern.
The deformation amount of the optical substrate of the composite optical element in the first to third load application patterns (that is, the shape difference from the polymerization reaction due to light energy irradiation of the energy curable resin layer) is also the third load. The application pattern is the smallest, then the second load application pattern is small, the first load application pattern is the largest, and the method of aligning the composite optical element using the third load application pattern is after molding the composite optical element. Was found to have the highest optical performance.

  Through such experimental results, the present applicant has previously obtained a predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time, and a plurality of predetermined values on which at least one side forms an optical substrate. In the composite optical element with respect to the polymerization reaction time while promoting the polymerization reaction of the polymerizable resin layer with the polymerizable resin layer having a low polymerization rate sandwiched between the positions of the optical surfaces of the optical substrate between the members All eccentricity adjustment steps for all optical substrates in the composite optical element within the polymerization reaction time predicted to be between 0% and 70% in the predicted value of the polymerization rate of the polymerizable resin layer The eccentricity adjustment step for at least one of the optical substrates is performed for a predetermined time, and the polymerization rate in the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time is Adjustment load for moving in the direction relative to the optical substrate in all eccentricity adjustment steps performed while promoting the polymerization reaction of the polymerizable resin layer when the polymerization reaction time expected to exceed 0% elapses The present invention has led to a method of aligning a composite optical element of the present invention that cancels the application of the above and an aligning device thereof.

  According to the alignment method and alignment apparatus of the present invention, even when the elastic modulus of the optical substrate is low or when the polymerizable resin layer such as an energy curable resin layer interposed between the optical substrates is thick, A composite optical element that can be completed as a composite optical element with high alignment accuracy by reducing the amount of eccentricity of the optical substrate is obtained.

  In the alignment method of the present invention, the polymerization rate is predicted to be between 0% and 70% in the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time. When the eccentricity adjusting step for at least one optical substrate among all the eccentricity adjusting steps for all optical substrates in the composite optical element is performed while promoting the polymerization reaction of the polymerizable resin layer, the eccentricity adjusting step is performed. It is preferable to cancel the application of the adjustment load to the optical substrate in the core adjustment step one or more times.

  In the alignment method of the present invention, the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time is an optical substrate between a plurality of predetermined members on which at least one side forms an optical substrate. Using a test piece in which a polymerizable resin layer having a low polymerization rate is sandwiched at the position of the optical surface, the polymerization is carried out every predetermined polymerization reaction time while promoting the polymerization reaction of the polymerizable resin layer in the test piece. It is determined by measuring the Young's modulus of the conductive resin layer.

  Further, in the alignment method of the composite optical element of the present invention, the polymerization in which the polymerization rate is low at the position of the optical surface of the optical base material between a plurality of predetermined members whose at least one side forms the optical base material in advance. Using the test piece with the photosensitive resin layer sandwiched between them, while promoting the polymerization reaction of the polymerizable resin layer in the test piece, each optical substrate in the test piece with respect to the reference optical axis for each predetermined polymerization reaction time At least one or more optical substrates out of all the eccentricity adjusting steps for all the optical substrates in the composite optical element with respect to the polymerization reaction time by measuring the adjustment load necessary for moving in the vertical direction or the tilt direction Adjustment load required to move the optical base material in the composite optical element corresponding to the optical base material of the test piece in the direction perpendicular or inclined with respect to the reference optical axis The predicted value is acquired as a master curve of an appropriate adjustment load for the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time, and moved in the direction with respect to the optical substrate in the composite optical element. The adjustment load necessary for the adjustment is controlled using a master curve.

  Note that the Young's modulus of the energy curable resin decreases with increasing temperature. For this reason, when using heating means such as infrared irradiation or raising the ambient temperature during the eccentricity adjustment process, the adjustment load for eccentricity adjustment can be kept low, and further generated inside the composite optical element. Strain can be reduced. In addition, energy curable resins have viscoelastic properties, and with heating, the elasticity decreases and the viscosity increases. Therefore, the deformation speed of the energy curable resin with respect to a certain load increases, and the time required for eccentricity adjustment Can be shortened. Furthermore, when the temperature is raised to the vicinity of the glass transition point through a heating means, the stress of the composite optical element can be relieved, and the stress relieving process after molding can also be performed during molding. Productivity of optical elements is improved.

  For this reason, in the alignment method of the composite optical element of the present invention, the decentering adjustment process for at least one of the optical base materials out of all the decentering adjustment processes for all the optical base materials in the composite optical element is polymerizable. When performing while promoting the polymerization reaction of the resin layer, it is preferable to use a heating step of heating the polymerizable resin layer in the eccentricity adjusting step.

  Moreover, in the alignment method of a composite optical element, it is preferable to perform all decentering adjustment steps for all optical substrates in the composite optical element before promoting the polymerization reaction of the polymerizable resin layer.

  In the alignment method of the composite optical element, the polymerization rate is 0% to 70% in the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time while promoting the polymerization reaction of the polymerizable resin layer. It is preferable to perform all the eccentricity adjustment steps for all the optical base materials in the composite optical element for a predetermined time within the polymerization reaction time predicted to be up to%.

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
First Embodiment FIG. 3 is an explanatory view showing the shape of an optical substrate to be bonded in the method for adjusting the eccentricity of a composite optical element according to the first embodiment of the present invention, and (a) is a view showing a state before bonding. (B) is a figure which shows the state bonded together.

(Shape of optical substrate to be bonded)
The first optical substrate 12 has an aspherical shape with a bonding surface 12b having an approximate curvature radius R2 = 8 mm, and an aspherical shape having a surface 12a opposite to the bonding surface 12b having an approximate curvature radius R1 = 38 mm. This is a plastic molded lens having a center thickness t1 = 0.8 mm and an outer diameter D1 = φ12.4 mm. The material of the lens is a thermoplastic resin called COP (cycloolefin polymer) resin (ZEONEX 480R: manufactured by Nippon Zeon Co., Ltd.).
The second optical base material 14 has a bonding surface 14b formed in an aspherical shape with an approximate curvature radius R4 = 6.4 mm, and a surface 14a opposite to the bonding surface 14b has a non-approximation with an approximate curvature radius R3 = 16 mm. The lens is a positive meniscus lens having a spherical shape and a convex convex meniscus shape, and is a plastic molded lens having a center thickness t2 = 2.4 mm and an outer diameter D2 = φ12.4 mm. The material of the lens is a thermoplastic resin called PC (polycarbonate) resin (Iupizeta EP5000: manufactured by Mitsubishi Gas Chemical Co., Ltd.).

(Lamination process)
After a desired amount of energy-curable resin is dropped on the bonding surface 12b of the first optical substrate 12, the bonding surface 12b of the first optical substrate 12 and the bonding surface 14b of the second optical substrate 14 are The first optical substrate 12 and the second optical substrate 14 are bonded together while the energy curable resin is stretched through the second optical substrate 14. As shown in FIG. 3B, when the first optical base 12 and the second optical base 14 are bonded to each other with the energy curable resin layer 16 sandwiched therebetween. The peripheral portions 12b1 and 14b1 of the bonding surfaces are in contact with each other, and the energy curable resin layer 16 is formed in a meniscus shape with a center thickness of 0.7 mm.

(Explanation of eccentricity of optical surface)
FIG. 4 is a cross-sectional view showing the eccentric state of the first optical substrate 12 and the second optical substrate 14 before being bonded with the energy curable resin 16 interposed therebetween.
In the example of FIG. 4, the composite optical element 10 is configured by bonding a first optical base 12 and a second optical base 14 via an energy curable resin 16.

In this composite optical element 10, the first optical substrate 12 has optical surfaces 12a and 12b, and the second optical substrate 14 has optical surfaces 14a and 14b, respectively. Here, the optical cores of the composite optical element 10 are the first and second optical cores c1 and c2 of the optical surfaces 12a and 12b, and the third and fourth optical cores c3 and c4 of the optical surfaces 14a and 14b. In total, there are four. Here, in order for the composite optical element 10 to exhibit desired optical performance, the optical cores c1 to c4 are arranged so that all of the first to fourth optical cores c1 to c4 are located on the same straight line. It is necessary to adjust (eccentricity adjustment) the positions in the shift direction and tilt direction.
That is, the second optical axis L1 of the first optical base 12 that connects the first optical core c1 and the second optical core c2, and the second optical core L4 that connects the third optical core c3 and the fourth optical core c4. It is necessary to make the optical axis L2 of the optical substrate 14 coincide with the reference optical axis L0 with high accuracy. The reference optical axis L0 is an optical axis that serves as a reference for eccentricity adjustment.

The optical core represents the position of the optical surface where an ideal image can be obtained.If the optical surface shape is a spherical surface, it means the center of curvature of the spherical surface, and the optical surface shape is an aspherical surface. The center of curvature in the spherical approximation of the central part of the aspherical surface. The ideal image is an ideal image for a chart image, a wavefront aberration image, and an axial coma image that can be measured when light is transmitted through the optical substrate.
The images transmitted through these optical base materials are formed so as to deviate from the ideal image by increasing the positional deviation of the optical core of the optical base material, the refractive index distribution inside the optical base material, and the birefringence.

That is, the decentering in the alignment method of the composite optical element in the present application refers to a state in which an image deviating from the ideal image (ideal image shift) is formed, and the decentering adjustment is for eliminating the ideal image shift. And adjusting the position of the optical core of the optical substrate.
The shift refers to the parallel movement of the optical core of the optical surface with respect to the optical axis, and the tilt refers to the tilt of the optical core of the optical surface with respect to the optical axis.

Next, a composite optical element alignment apparatus used in the composite optical element alignment method of the first embodiment will be described.
(Configuration of alignment device)
FIG. 5 is an explanatory diagram showing the overall configuration of the aligning device 20 for the composite optical element according to the first embodiment of the present invention.
The aligning device 20 of the composite optical element emits light to the first optical substrate 12 and the second optical substrate 14 that are arranged opposite to each other with an energy curable resin (ultraviolet curable resin 16) as a polymerizable resin interposed therebetween. A composite in which an ultraviolet curable resin layer 16 is bonded between the first and second optical base materials 12 and 14 by obtaining the optical cores c1 to c4 of the respective optical surfaces while transmitting the light and adjusting the eccentricity. An apparatus for obtaining an optical element. The alignment device 20 includes first to fourth eccentricity adjustment means 21, 25, 29, and 33, and a control personal computer 44 as an eccentricity adjustment operation control means.

The first eccentricity adjusting means 21 moves the first jig 22 in the xy direction via the first jig 22 that holds the first optical substrate 12, the drive rod 23, and the drive rod 23. The first motor 24 is provided.
The first jig 22 is a jig for regulating the position of the first optical substrate 12 in the xy direction, and has a bell clamp mechanism having a cylindrical shape with a sharp end. The 1st jig | tool 22 hold | maintains the 1st optical base material 12 with a point with this bell clamp mechanism. In the first embodiment, the spherical portion of the optical substrate is held by the bell clamp mechanism, but a scroll chuck mechanism, a holding mechanism that holds the side surface of the optical substrate or the outer peripheral portion of the spherical surface, or the like may be used. .
The first eccentricity adjusting means 21 configured as described above holds the first optical base 12 so as to be movable in the xy direction. Specifically, the first jig 22 is brought into contact with the aspherical surface portion of the surface 12a opposite to the bonding surface 12b of the first optical substrate 12, and vacuum suction is performed by a vacuum suction device (not shown). As a result, the first jig 22 holds the first optical member 12. Then, the driving of the first motor 24 is transmitted to the first jig 22 via the drive rod 23, and the first optical base 12 is moved in the xy-axis direction with respect to the reference optical axis L0 together with the first jig 22. Move along.
In this way, the first eccentricity adjusting means 21 has the first optical core c1 included in the first optical core c1 included in the surface 12a opposite to the bonding surface 12b in the first optical substrate 12. (Refer to FIG. 4) so as to coincide with the reference optical axis L <b> 0 (using a light source 38 as a reference optical axis setting unit, a measurement image forming member (cross chart) 40, and an image detector 42) by a method described later. The first optical base 12 is moved in a direction perpendicular to the formed reference optical axis L0 (a direction parallel to the xy plane).

The second eccentricity adjusting means 25 moves the second jig 26 in the xy direction via the second jig 26 holding the first optical base 12, the drive rod 27, and the drive rod 27. The second motor 28 is provided.
The second jig 26 holds the side surface of the first optical substrate 12.
The second eccentricity adjusting means 25 configured in this way comes into contact with the side surface of the first optical substrate 12. Then, when the second motor 28 moves the second jig 26 in the xy direction via the drive rod 27, along the surface 12a opposite to the bonding surface 12b in the first optical base material 12. The first optical base 12 is inclined with respect to the reference optical axis L0 (θ direction) by the displacement of the contact position of the first jig 22 with the cylindrical portion having a sharp end in the bell clamp mechanism. Moving.
In this way, the second eccentricity adjusting unit 25 is configured so that the bonding surface 12b of the first optical base 12 has the first optical core c1 (see FIG. 4) aligned with the reference optical axis L0. The first optical substrate 12 is moved in the tilt direction (θ direction) with respect to the reference optical axis L0 so that the second optical core c2 (see FIG. 4) it has coincides with the reference optical axis L0.

The third eccentricity adjusting means 29 is a third jig 30 that holds the second optical substrate 14, a drive rod 31, and a third jig 30 that moves the third jig 30 via the drive rod 31. The motor 32 is provided.
The third jig 30 is a jig for restricting the position of the second optical base material 14 in the xy direction, and has the same bell clamp mechanism as that of the first jig 22.
The third eccentricity adjusting means 29 configured as described above holds the second optical base material 14 so as to be movable in the xy direction. Specifically, the third jig 30 is brought into contact with the aspherical surface portion of the surface 14a opposite to the bonding surface 14b in the second optical base material 14, and vacuum suction is performed by a vacuum suction device (not shown). Thus, the third jig 30 holds the second optical substrate 14. Then, the driving of the third motor 32 is transmitted to the third jig 30 via the driving rod 31, and the second optical base material 14 is moved along with the third jig 30 in the xy axis direction with respect to the reference optical axis L0. Move along.
In this way, the third eccentricity adjusting means 29 is such that the third optical core c3 (see FIG. 4) of the surface 14a opposite to the bonding surface 14b in the second optical base material 14 is the reference light. The second optical substrate 14 is moved in a direction perpendicular to the reference optical axis L0 (a direction parallel to the xy plane) so as to coincide with the axis L0.

The fourth eccentricity adjusting means 33 moves the fourth jig 34 in the xy direction via the fourth jig 34 holding the second optical base material 14, the drive rod 35, and the drive rod 35. A fourth motor 36 is provided.
The fourth jig 26 holds the side surface of the second optical base material 14.
The fourth eccentricity adjusting means 33 configured as described above is in contact with the side surface of the second optical base material 14. Then, when the fourth motor 36 moves the fourth jig 34 in the xy direction via the drive rod 35, along the surface 14 a opposite to the bonding surface 14 b in the second optical base material 14. The contact position of the third jig 30 with the cylindrical portion having a sharp end in the bell clamp mechanism is shifted, so that the second optical base material 14 is inclined with respect to the reference optical axis L0 (θ direction). Moving.
In this way, the fourth eccentricity adjusting unit 33 is configured so that the bonding surface 14b of the second optical base material 14 has the third optical core c3 (see FIG. 4) aligned with the reference optical axis L0. The second optical substrate 14 is moved in the tilt direction (θ direction) with respect to the reference optical axis L0 so that the fourth optical core c4 (see FIG. 4) has the reference optical axis L0.

Further, the first to fourth eccentricity adjusting means 21, 25, 29, 33 are controlled by a control personal computer 44 as an eccentricity adjusting operation control means. The control personal computer 44 is a commonly used personal computer equipped with a CPU, a ROM and the like.
For example, the control personal computer 44 calculates the difference between the reference optical axis L0 and the first optical core c1 and drives the first motor 24 based on the calculation result to perform the first eccentricity adjustment. Control is performed so that the eccentricity adjustment by means 21 is performed. Similarly, the calculation is performed so that there is no difference between the reference optical axis L0 and the second optical core c2, the third optical core c3, and the fourth optical core c4, and the second motor is calculated based on the calculation result. 28, the third motor 32, and the fourth motor 36 are driven in the same manner, and are controlled so that the eccentric adjustment by the second, third, and fourth eccentricity adjusting means 25, 29, and 33 is performed.

  Further, the control personal computer 44 sandwiches the energy curable resin layer 16 having a low polymerization rate at the position of the optical surface between the first optical base 12 and the second optical base 14, While accelerating the polymerization reaction of the energy curable resin layer 16 by irradiating light or heat energy through the energy irradiation means, the energy curable resin layer 16 in the composite optical element 10 with respect to the energy irradiation time determined in advance is used. Using the predicted value of the polymerization rate, the energy irradiation that the polymerization rate is predicted to be between 0% and 70% in the predicted value of the polymerization rate of the energy curable resin layer 16 in the composite optical element 10 with respect to the energy irradiation time. Within the time, the first to fourth eccentricity adjusting means 2 for the first and second optical base materials 12 and 14 in the composite optical element 10. , 25, 29 and 33, the eccentricity adjustment is performed for at least one of the optical substrates via the eccentricity adjustment means for a predetermined time, and the energy curable resin layer in the composite optical element 10 with respect to the energy irradiation time. The energy curable resin layer 16 is irradiated by irradiating light or heat energy through the energy irradiating means when the energy irradiation time is predicted to exceed 70% in the predicted value of the polymerization rate of 16. Decentering adjustment through the first to fourth decentering adjusting means 21, 25, 29, 33 for the first and second optical base materials 12, 14 in the composite optical element 10 performed while promoting the polymerization reaction of Control is performed so as to cancel the application of the adjustment load for moving the optical substrate in the direction in the direction.

  The predicted value of the polymerization rate of the polymerizable resin layer 16 in the composite optical element 10 with respect to the polymerization reaction time sandwiches the polymerizable resin layer 16 in a state where the polymerization rate is low at the position of the optical surface between the optical substrates 12 and 14. It is obtained by measuring the Young's modulus of the polymerizable resin layer at every predetermined polymerization reaction time while accelerating the polymerization reaction of the polymerizable resin layer 16 on the test piece, and storing it in the control personal computer 44. Has been.

  Further, the control personal computer 44 is within the polymerization reaction time in which the polymerization rate is predicted to be between 0% and 70% in the predicted value of the polymerization rate of the polymerizable resin layer 16 in the composite optical element with respect to the polymerization reaction time. At least one or more of the eccentricity adjustments through the first to fourth eccentricity adjustment means 21, 25, 29, 33 with respect to the first and second optical base materials 12, 14 in the composite optical element 10. When performing the eccentricity adjustment via the eccentricity adjusting means for the base material while promoting the polymerization reaction of the polymerizable resin layer 16, the application of the adjustment load to the optical base material in the eccentricity adjustment step is released once or more. It can also be controlled to do.

  Further, the control personal computer 44 uses the master curve of the appropriate adjustment load for the predicted value of the polymerization rate of the energy curable resin layer 16 in the composite optical element 10 with respect to the energy irradiation time acquired in advance. An adjustment load necessary to move the optical base material in the direction in the eccentricity adjustment is controlled.

  The master curve of the appropriate adjustment load for the predicted value of the polymerization rate of the energy curable resin layer 16 in the composite optical element 10 with respect to the energy irradiation time is the optical surface between the first and second optical substrates 12 and 14. Using a test piece in which a polymerizable resin layer 16 having a low polymerization rate is sandwiched at a position, while promoting the polymerization reaction of the polymerizable resin layer 16 in the test piece, the test piece The first and second optical groups in the composite optical element 10 with respect to the polymerization reaction time are measured by measuring an adjustment load necessary for moving each optical substrate in a direction perpendicular to or inclined with respect to the reference optical axis. Of the eccentric adjustments through the first to fourth eccentric adjustment means 21, 25, 29, 33 with respect to the materials 12, 14, the eccentricity adjustment hand for at least one optical substrate In the eccentricity adjustment through the optical substrate, the predicted value of the adjustment load necessary for moving the optical substrate in the composite optical element 10 corresponding to the optical substrate of the test piece in the vertical direction or the tilt direction with respect to the reference optical axis is calculated. The master curve of an appropriate adjustment load for the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time is acquired and stored in the control personal computer 44.

In FIG. 5, reference numeral 38 denotes a light source used for eccentricity measurement, 40 denotes an image forming member for measurement (cross chart), 42 denotes an image detector (CCD camera including an objective lens), 46 denotes a half mirror, and 48 denotes It is a light source used for ultraviolet irradiation as an energy irradiation means.
In the configuration of FIG. 5, a laser light source is used as the light source 38, but any light source may be used as long as it emits collimated light. Further, the reference optical axis L0 connecting the light source 38 and the half mirror 46 and the image detector 42 and the irradiation axis (molding axis) connecting the light source 48 and the half mirror 46 are adjusted with high accuracy in advance. Of course. Instead of the half mirror 46, a glass fiber that bends ultraviolet light may be used.
Furthermore, the cross-chart is used for the image forming member 40 in the configuration of FIG. 5, but any shape and method may be used as long as a known transmitted light observation unit is provided. You may comprise. Similarly, the image detector 42 having the configuration shown in FIG. 5 uses a CCD camera including an objective lens, but any mechanism may be used as long as it can detect light.

Next, a specific procedure of the eccentricity adjusting method using the eccentricity adjusting device for the composite optical element according to the first embodiment will be described.
(Substrate holding method)
As described above, the bonded surface 12b in a state in which the energy curable resin layer having a low polymerization rate is sandwiched between the first optical substrate and the second optical substrate at the position of the optical surface. By bringing the first jig 22 into contact with the aspherical surface portion of the opposite surface 12a and performing vacuum suction with a vacuum suction device (not shown), the first jig 22 becomes the first optical base material. 12 is held.
In the same manner, the third jig 30 is brought into contact with the aspherical surface portion of the surface 14b opposite to the bonding surface 14a, and the second jig 30 holds the second optical base material 14. To do.

(Alignment and molding method)
Hereinafter, referring to FIG. 5, the flowchart of the eccentricity adjustment of FIG. 6 and the explanatory diagram of the optical core adjustment method of FIG. 7A to FIG. A method for aligning the composite optical element will be described. In FIG. 7, for convenience of explanation, the first optical base material and the second optical base material are illustrated as being appropriately separated.
The collimated light emitted from the light source 38 passes through the image forming means (cross chart) 40, and the collimated light is detected by the image detector 42, whereby the reference optical axis L0 is set.
Therefore, the eccentric adjustment of the first optical core c1 and the second optical core c2 of the first optical base 12 is performed.
When the first optical base 12 is held by the first jig 22, as shown in FIG. 7A, the first optical core c1 does not necessarily coincide with the reference optical axis L0.

Therefore, as shown in FIG. 7B, the first jig 22 is moved so that the first optical core c1 coincides with the reference optical axis L0.
In this case, as shown in FIG. 5, the collimated light that has passed through the image forming member (cross chart) 40 from the light source 38 passes through the first optical base 12 and an image is detected by the image detector 42. . Based on the image obtained here and the eccentricity adjustment amount obtained by a known eccentricity adjustment amount calculation method (see, for example, JP-A-2008-256900), the first optical base is connected via the control personal computer 44. The material 12 is moved in the xy-axis direction perpendicular to the reference optical axis L0 by moving the first jig 22. Thus, the first optical core c1 is aligned with the reference optical axis L0 (step S1 in FIG. 6). In the present embodiment, the coincidence of the following optical core and the reference optical axis is all performed by calculating the eccentricity adjustment amount via the control personal computer 44.

Next, the pattern of the image forming member 40 is changed, the eccentric image about the second optical core c2 is detected, and the eccentricity adjustment amount of the bonding surface 12b in the first optical substrate 12 is calculated. Thereafter, the second jig 26 is brought into contact with the side surface of the first optical base 12. Then, as shown in FIG. 7C, the first optical substrate 12 held by the first jig 22 is tilted by θ with respect to the reference optical axis L0 by the second jig 26. The second optical core c2 is moved to coincide with the reference optical axis L0 (step S2 in FIG. 6).
In addition, since the 1st optical base material 12 is hold | maintained by the 1st jig | tool 22 which has a bell clamp mechanism, the already adjusted 1st optical core c1 does not move.
Thus, in the first optical substrate 12, the first optical core c1 that the surface 12a opposite to the bonding surface 12b has and the second optical core c2 that the bonding surface 12b has are the reference light. It coincides with the axis L0.
In the first embodiment, the first optical core c1 is moved in the xy direction with respect to the reference optical axis L0, and the second optical core is moved in the direction inclined by θ with respect to the reference optical axis L0 to be eccentric. However, instead of this, the first optical core c1 is moved in the direction inclined by θ with respect to the reference optical axis L0, and the second optical core is moved in the xy direction with respect to the reference optical axis L0. The eccentricity adjustment may be performed. The same applies to other embodiments.

Next, the eccentric adjustment of the third optical core c3 and the fourth optical core c4 of the second optical base material 14 is performed. As shown in FIG. 5 and FIG. 7 (d), the third jig 30 is held so that the surface 14 a opposite to the bonding surface 14 b in the second optical base material 4 can be moved.
Next, as shown in FIG. 7E, the third optical core c3 is moved to the reference optical axis by moving the third jig 30 in the direction perpendicular to the reference optical axis L0 (xy axis direction). Match with L0.
At this time, by moving the third motor 32 also in the z-axis direction, the third optical core c3 is made to coincide with the reference optical axis L0, and by movement in a direction parallel to the reference optical axis L0 (z-axis direction), The 2nd optical base material 14 is made to approach the 1st optical base material 12 (refer FIG.7 (e)).

Next, the fourth jig 34 is brought into contact with the side surface of the second optical base material 14. Further, as shown in FIG. 7 (f), the fourth optical core c4 is centered on the third optical core c3 while keeping the third optical core c3 coincident with the reference optical axis L0. The fourth optical core c4 is aligned with the reference optical axis L0 (step S4 in FIG. 6). At this time, the second optical base 14 and the ultraviolet curable resin 16 are brought into contact with each other while the fourth optical core c4 of the fourth jig 34 is aligned with the reference optical axis L0, and a predetermined resin thickness is obtained. (See Fig. 7 (f)).
In addition, since the 2nd optical base material 14 is hold | maintained by the 3rd jig | tool 30 which has a bell clamp mechanism, the surface surface on the opposite side to the bonding surface 14b in the already adjusted 2nd optical base material 14 The third optical core c3 of 14a does not move.
Thus, in the second optical base material 14, the third optical core c3 that the surface 14a opposite to the bonding surface 14b has and the fourth optical core c4 that the bonding surface 14b has are the reference light. It coincides with the axis L0.
As in the case of the first optical substrate, the third optical core is moved in the direction inclined by θ with respect to the reference optical axis L0 instead of the adjustment of the eccentricity of the second optical substrate. Then, the eccentric adjustment may be performed by moving the fourth optical core in the xy direction with respect to the reference optical axis L0. The same applies to other embodiments.
As described above, the first to fourth optical cores coincide with the reference optical axis L0, whereby the respective optical surfaces are eccentrically adjusted with high accuracy.

In the first embodiment, the ultraviolet curable resin 16 is discharged onto the bonding surface 12b of the first optical base 12 by a supply unit (not shown) before the first eccentricity adjustment.
However, the UV curable resin 16 may be supplied at any time before the eccentricity adjustment between all the optical base materials is completed, or may be supplied during the eccentricity adjustment. For example, after the step S <b> 2, the ultraviolet curable resin 16 is supplied onto the first optical base 12 (see FIG. 7D), and simultaneously with the eccentricity adjustment of the second optical base 14, the second The optical substrate 14 may stretch the ultraviolet curable resin 16.

(Curing method)
The light source 48 which is a metal halide lamp is activated via the control personal computer 44 and the ultraviolet curable resin 16 is irradiated with ultraviolet rays via the half mirror 46. Thereby, the composite optical element 10 of 3 layers which consists of the 1st optical base material 12, the ultraviolet curable resin 16, and the 2nd optical base material 14 is obtained after irradiation for arbitrary time. In the present embodiment, the ultraviolet curable resin 16 is used to form the polymerizable resin layer, but a thermosetting resin or a thermoplastic resin may be used. In that case, the resin is cured and plasticized using a heat source instead of the light source 48 for ultraviolet irradiation. Furthermore, polymerization may be performed using a plurality of types of monomers.
In addition, although 1st embodiment demonstrated the composite optical element 10 which distribute | arranged resin between the 1st optical base material 12 and the 2nd optical base material 14, it does not restrict to this. For example, the present invention can be similarly applied to a composite optical element in which a resin is disposed between a plurality (three or more) of optical substrates. Furthermore, the present invention can be similarly applied to a composite optical element made of a resin and an optical substrate, which is manufactured by arranging a resin between a mold having a spherical surface and the optical substrate.

  In the eccentricity adjusting device of the first embodiment, as described above, the control personal computer 44 has a polymerization rate at the position of the optical surface between the first optical base 12 and the second optical base 14. It was obtained in advance while promoting the polymerization reaction of the energy curable resin layer 16 by irradiating light or heat energy through the energy irradiating means with the energy curable resin layer 16 in a low state interposed therebetween. Using the predicted value of the polymerization rate of the energy curable resin layer 16 in the composite optical element 10 with respect to the energy irradiation time, the polymerization rate is calculated in the predicted value of the polymerization rate of the energy curable resin layer 16 in the composite optical element 10 with respect to the energy irradiation time. The first and second optical groups in the composite optical element 10 within an energy irradiation time predicted to be between 0% and 70%. The eccentricity adjustment via the eccentricity adjustment means for at least one of the optical substrates among the eccentricity adjustments via the first to fourth eccentricity adjustment means 21, 25, 29, 33 with respect to 12, 14 is performed for a predetermined time. When the energy irradiation time when the polymerization rate is predicted to exceed 70% in the predicted value of the polymerization rate of the energy curable resin layer 16 in the composite optical element 10 with respect to the energy irradiation time passes through the energy irradiation means. Adjustment for moving the optical base material in the direction in the eccentricity adjustment through all the eccentricity adjustment means performed while accelerating the polymerization reaction of the energy curable resin layer 16 by irradiating light or heat energy. Control to cancel the application of load.

Example 1
Next, an example (Example 1-1 to Example 1-3) and a comparative example (Comparative Example 1-1 to Comparative Example 1-3) of the adjusting method using the composite optical element adjusting device of the first embodiment. ).
(Calculation of appropriate adjustment load for polymerization rate)
In this example and the comparative example, the energy curable resin layer was cured under the same curing conditions for the test piece, and the Young's modulus of the resin of the cured product was set to 100%, and then the energy curable type in the energy irradiation time. The polymerization rate was determined from the ratio with the Young's modulus of the resin layer, and the determined polymerization rate was used as the predicted value of the polymerization rate during the energy irradiation time on the molding machine.
Next, after the load force measuring terminal is attached to the outer peripheral end surface portion of the second optical substrate 14, it is brought into the same state as the bonding shape and the bonding step, and the substantially uniform illuminance with an ultraviolet illuminance of 30 ± ² mW / cm ^2. UV irradiation with distribution is performed for 100 seconds. Here, the optical axis with respect to the 1st optical base material 12 with respect to the 2nd optical base material 14 in irradiation time every 5 second (axis along which the spherical core of the 1st optical base material 12 and the 2nd optical base material 14 passes) The amount of load required to move 0.5 mm (speed 0.5 mm / 1 sec) in the shift direction was determined. The amount of load in the irradiation time length is input to the control personal computer 44 as a master curve of an appropriately adjusted load with respect to the predicted value of the polymerization rate in the irradiation time.

(Applying eccentric load)
The eccentric adjustment load application pattern (horizontal axis: vertical axis with respect to time: adjustment load) in this example and the comparative example will be described with reference to FIG.
Example 1-1 to Example 1-3 are application patterns of an eccentricity adjustment load that matches the control of the control personal computer 44 of the alignment apparatus of the first embodiment, and are Comparative Example 1-1 to Comparative Example 1-3. These are the giving patterns of the eccentricity adjustment load which are not suitable for control of the control personal computer 44 of the alignment apparatus of the first embodiment. Control software for performing eccentricity adjustment operation control based on the application patterns of the respective eccentricity adjustment loads was installed in the control personal computer 44.
Further, as the molding conditions for all patterns according to the present example and the comparative example, the ultraviolet illuminance at 30 ° C. is 30 ± ² mW / cm ² for 100 seconds to complete the curing, and the cured product is used as various molded products. Evaluation was performed.
In addition, the adjustment load is applied to the shift movement in the xy direction of the second optical base material 14 with respect to the optical axis of the composite element (with the optical axis as the Z axis) in the same manner as when an appropriate adjustment load amount is derived. ing. In the case where no adjustment load is applied, the first optical base 12 and the second optical base 14 are attracted in the Z direction by means exemplified by the above-described base material holding method. Thus, the influence of the substrate holding force appears only in the thickness direction (Z direction), but the adjustment in the thickness direction is adjusted by the control personal computer 44, and in a direction perpendicular to the load application direction for eccentricity adjustment. Therefore, the holding load on the optical substrate and the adjustment load do not affect each other.
In the performance standard of the composite element in Example 1, the on-axis coma amount (eccentric amount) is 0.8λ or less.

(1) Comparative Example 1-1: (A1) Pattern In Comparative Example 1-1, the alignment is completed by applying an eccentric adjustment load before light energy irradiation, and then the light energy is not applied (100 seconds). Is an application pattern of an eccentricity adjustment load ((A1) pattern) when the energy curable resin layer is cured by irradiation. (A1) When alignment is performed by a pattern alignment method, the shape difference (hereinafter referred to as surface shape change amount) of the molded optical substrate 1 before molding is 245 μm, and the axial top amount is 3λ. (Approximate).
(2) Comparative Example 1-2: (B1) Pattern In Comparative Example 1-2, the eccentricity adjustment load is applied before the light energy irradiation to complete the alignment, and then the adjustment load applied before the light energy irradiation is applied. It is the application pattern ((B1) pattern) of the eccentricity adjustment load at the time of irradiating light energy continuously and hardening an energy curable resin layer. (B1) When alignment was performed by the pattern alignment method, the surface shape change amount of the molded product was 142 μm, and the on-axis frame amount was 1.3λ.
(3) Example 1-1: (C1) Pattern Example 1-1 is centered by applying an eccentricity adjustment load before light energy irradiation, and then adjusted to light energy irradiation (polymerization rate prediction value). It is an application pattern ((C1) pattern) of an eccentricity adjustment load when the energy curable resin layer is continuously cured for 60 seconds while changing the adjustment load. (C1) When alignment was performed by the pattern alignment method, the surface shape change amount of the molded product was 63 μm, and the on-axis frame amount was 0.7λ.
(4) Example 1-2: (D1) pattern In Example 1-2, an eccentricity adjustment load is applied before light energy irradiation, and then light energy is irradiated without applying the adjustment load for 20 seconds. It is an application pattern ((D1) pattern) of an eccentricity adjustment load when an appropriate load is applied for 20 seconds and then the energy curable resin layer is cured without applying the adjustment load again for 20 seconds. (D1) When alignment was performed by the pattern alignment method, the surface shape change amount of the molded product was 40 μm, and the axial top amount was 0.5λ.
(5) Example 1-3: (E1) Pattern In Example 1-3, alignment is performed by applying an eccentricity adjustment load before light energy irradiation, and then according to light energy irradiation (polymerization rate prediction value). After changing the adjustment load for 20 seconds, set the time for 20 seconds not to apply the load while advancing the curing reaction, and then apply the appropriate adjustment load for 20 seconds to cure the energy curable resin layer. It is an application pattern ((E1) pattern) of the eccentricity adjustment load in the case of. (E1) When alignment was performed by the pattern alignment method, the surface shape change amount of the molded product was 58 μm, and the on-axis frame amount was 0.6λ.
(6) Comparative Example 1-3: (F1) Pattern Comparative Example 1-3 is aligned with an eccentric adjustment load before light energy irradiation, and then irradiated with light energy without applying the adjustment load for 60 seconds. It is an application pattern ((F1) pattern) of an eccentricity adjustment load when an appropriate adjustment load is applied for 40 seconds thereafter and the energy curable resin layer is cured. (F1) When alignment was performed by the pattern alignment method, the energy-curable resin layer cured in an irradiation time of 86 seconds, which was a load time of 40 seconds, was peeled and broken.

Examples of the application patterns of these eccentricity adjustment loads are shown in Table 1-1, and the results of the composite optical elements subjected to the molding process using the patterns are shown in Table 1-2.
Table 1-1

Table 1-2

  According to the alignment method of Example 1-1 to Example 1-3, the axial coma accuracy (eccentricity accuracy of the entire element by transmitted light) is higher than that of Comparative Examples 1-1 and 1-2 as the conventional example. improves.

Example 2
Next, an example (Example 2-1 to Example 2-4) and a comparative example (Comparative Example 2-1 to Comparative Example 2) of the alignment method using the composite optical element alignment apparatus of the first embodiment. -2) will be described.
(Base material shape to be bonded)
The first optical substrate 12 is formed such that the surface 12a opposite to the bonding surface 12b has an aspherical shape with an approximate curvature radius R1 = 25 mm, and the bonding surface 12b has an aspherical shape with an approximate curvature radius R2 = 28 mm. This is a plastic molded lens having a center thickness tl = 3 mm and an outer diameter Dl = φ50 mm. The material is a thermoplastic resin called COP (cycloolefin polymer) resin (ZEONEX 480R: manufactured by Nippon Zeon Co., Ltd.).
The second optical substrate 14 has a surface 14a opposite to the bonding surface 14b formed in an aspherical shape having an approximate curvature radius R3 = 46 mm, and a bonding surface 14b formed in an aspherical shape having an approximate curvature radius R4 = 35 mm. The lens is a positive meniscus lens convex on the bonding side, and has a center thickness t2 = 7 mm and an outer diameter D2 = 36 mm. The material is S-BAL42 (manufactured by OHARA INC.).

An eccentric adjustment load application pattern (horizontal axis: vertical axis with respect to time = adjustment load) in this example and the comparative example will be described with reference to FIG. Examples 2-1 to 2-4 are application patterns of an eccentricity adjustment load that matches the control of the control personal computer 44 of the alignment apparatus of the first embodiment, and are Comparative Example 2-1 to Comparative Example 2-2. These are the giving patterns of the eccentricity adjustment load which are not suitable for control of the control personal computer 44 of the alignment apparatus of the first embodiment. Control software for performing eccentricity adjustment operation control based on the application patterns of the respective eccentricity adjustment loads was installed in the control personal computer 44.
Further, as the molding conditions for all patterns according to the present example and the comparative example, the ultraviolet illuminance at 30 ° C. is 30 ± ² mW / cm ² for 100 seconds to complete the curing, and the cured product is used as various molded products. Evaluation was performed.
In the performance standard of the composite element in Example 2, the on-axis coma amount (the amount of eccentricity) is 0.9λ or less.

(1) Comparative Example 2-1: (B2) Pattern In Comparative Example 2-1, the eccentricity adjustment is not performed before the light energy irradiation, and then the adjustment load for the polymerization rate of 0% is 60 simultaneously with the start of the light energy irradiation for 100 seconds. It is an application pattern ((B2) pattern) of an eccentricity adjustment load when the energy curable resin layer is cured for 2 seconds. (B2) When alignment was performed by the pattern alignment method, the surface shape change amount of the molded product was 327 μm, and the on-axis frame amount was 5λ (approximate value).
(2) Example 2-1: (C2) Pattern In Example 2-1, eccentricity adjustment is not performed before light energy irradiation, and then light energy irradiation (polymerization rate prediction) is performed simultaneously with the start of light energy irradiation for 100 seconds. It is an application pattern ((C2) pattern) of the eccentricity adjustment load when the light energy curable resin layer is continuously cured for 60 seconds while changing the adjustment load according to the value). (C2) When alignment was performed by the pattern alignment method, the surface shape change amount of the molded product was 70 μm and the on-axis frame amount was 0.8λ. Moreover, the throughput in production was improved by not performing the eccentricity adjustment before the light energy irradiation.
(3) Example 2-2: (D2) Pattern In Example 2-2, the eccentricity adjustment is not performed before the light energy irradiation, and then the light energy is irradiated without applying the adjustment load for 10 seconds, and then the appropriateness for 10 seconds. This is a pattern for applying an eccentricity adjustment load ((D2) pattern) when the energy curable resin layer is cured while performing eccentric adjustment for a total of 60 seconds while repeating a pattern for applying an appropriate adjustment load three times. (D2) When alignment was performed by the pattern alignment method, the surface shape change amount of the molded product was 30 μm, and the on-axis frame amount was 0.5λ. Moreover, the throughput in production was improved by not performing the eccentricity adjustment before the light energy irradiation.
(4) Example 2-3: (D3) pattern In Example 2-3, an eccentricity adjustment load is applied before light energy irradiation, and then light energy is irradiated without applying the adjustment load for 5 seconds. Thereafter, a pattern for applying an appropriate adjustment load for 5 seconds is repeated 6 times, and an eccentricity adjustment load application pattern ((D3) pattern) is obtained when the energy curable resin layer is cured while performing eccentric adjustment for a total of 60 seconds. . (D3) When alignment was performed by the pattern alignment method, the surface shape change amount of the molded product was 34 μm, and the on-axis frame amount was 0.6λ.
(5) Example 2-4: (D4) Pattern In Example 2-4, alignment is performed by applying an eccentric adjustment load before light energy irradiation, and then light energy is irradiated without applying the adjustment load for 2.5 seconds. Then, a pattern of applying an appropriate adjustment load for 2.5 seconds is repeated 12 times, and an eccentric adjustment load application pattern ((D4) when the energy curable resin layer is cured while performing eccentric adjustment for a total of 60 seconds. Pattern). (D4) When alignment was performed by the pattern alignment method, the surface shape change amount of the molded product was 31 μm, and the on-axis frame amount was 0.6λ.
(6) Comparative Example 2-2: (E2) Pattern In Comparative Example 2-2, an eccentricity adjustment load is applied before light energy irradiation, and then adjusted according to light energy irradiation (polymerization rate prediction). It is an application pattern ((E2) pattern) of an eccentricity adjustment load when the load is continuously applied for 80 seconds to cure the energy curable resin layer. (E2) In the case of alignment by the pattern alignment method, the energy curable resin layer cured when the light energy was irradiated for 75 seconds had peeled and broken in the molded product.

Examples of the application patterns of these eccentricity adjustment loads are shown in Table 2-1, and the results of the composite optical elements subjected to the molding process using the patterns are shown in Table 2-2.
Table 2-1.

Table 2-2

  According to the alignment method of Example 2-2 to Example 2-4, on-axis coma accuracy (eccentricity accuracy of the entire element by transmitted light) is further improved as compared with Example 1.

  The alignment method and alignment apparatus for a composite optical element according to the present invention are not limited to the configuration of the first embodiment shown in FIG. 5, and for example, as shown in FIGS. The present invention can also be applied to a centering device having a different configuration.

Second Embodiment FIG. 10 is an explanatory view showing the overall configuration of a composite optical element alignment device 20 according to a second embodiment of the present invention. In addition, the same code | symbol is attached | subjected and demonstrated to the member which is the same as that of 1st embodiment, or corresponds.

(Configuration of alignment device)
The alignment device 20 of the composite optical element according to the second embodiment is configured to transmit light to the first optical substrate 12 and the second optical substrate 14 that are arranged to face each other with the ultraviolet curable resin 16 interposed therebetween. The optical cores c1 to c4 of the respective optical surfaces are obtained and the eccentricity is adjusted, and then the ultraviolet curable resin layer 16 is joined between the first and second optical base materials 12 and 14 in the first state. The optical substrate 12 is peeled off to obtain the composite optical element 10 in which the ultraviolet curable resin layer 16 is bonded to the second optical substrate 14. The manufacturing apparatus 20 includes first to fourth eccentricity adjusting means 21, 25, 29, 33, a control personal computer 44 as an eccentricity adjusting operation control means, and a peeling means 51.

In the first embodiment, the first to fourth eccentricity adjusting means 21, 25, 29, and 33 are provided independently of each other. On the other hand, in the alignment apparatus of the second embodiment, as shown in FIG. 10, the first eccentricity is connected to the jig 26 at the tip of the second eccentricity adjusting means 25 via the rod 25 ′. Adjustment means 21 is provided. Further, a third adjusting means 29 is provided on the jig 34 at the tip of the fourth adjusting means 33 via a rod 33 ′. As described above, in the alignment device of the second embodiment, the eccentric adjustment means for adjusting the xy direction and the eccentricity adjustment means for adjusting the θ direction in one optical member are integrally formed.
In the alignment device of the first embodiment, the bell clamp mechanism is used as the eccentricity adjusting means. However, the alignment device of the second embodiment uses a scroll chuck function. With these mechanisms, even if the spherical surface portion of the optical substrate is wide and the optical surface cannot be held by a bell clamp, the eccentricity can be adjusted by holding the outer periphery of the spherical portion.

Further, in the alignment device of the second embodiment, the second eccentricity adjusting means 25 includes a curved surface 26a at the end opposite to the composite optical element in the second jig 26, and the second An inclined guide member 26 ′ having a curved surface 26 a ′ for sliding the curved surface 26 a of the jig 26 is provided.
Accordingly, when the second eccentricity adjusting means 25 applies a force to move the second jig 26 in the direction along the reference optical axis L0 via the second motor 28 and the drive rod 27. Furthermore, the curved surface 26 a of the second jig 26 slides on the curved surface 26 a ′ of the inclined guide member 26 ′, so that the entire second eccentricity adjusting means 25 and the first eccentricity adjusting means 21 are combined with the reference optical axis. It moves in the tilt direction with respect to L0.

In the alignment device of the second embodiment, the fourth eccentricity adjusting means 33 includes a curved surface 34a at the end opposite to the composite optical element in the fourth jig 34, and the fourth An inclined guide member 34 ′ having a curved surface 34 a ′ for sliding the curved surface 34 a of the jig 34 is provided.
Thereby, the fourth eccentricity adjusting means 33 applies a force to move the fourth jig 34 in the direction along the reference optical axis L0 via the fourth motor 36 and the drive rod 35. In addition, the curved surface 34 a of the fourth jig 34 slides on the curved surface 34 a ′ of the inclined guide member 34 ′, so that the entire fourth eccentricity adjusting means 33 and the third eccentricity adjusting means 29 together with the reference optical axis. It moves in the tilt direction with respect to L0.

Further, the peeling means 51 moves the release claw jig 52 for clawing the bonding surface 12 of the first optical substrate 12, the drive rod 53, and the release claw jig 52 via the drive rod 53. And a fifth motor 54 to be operated. In the alignment device of the first embodiment, a cross chart is used for the image forming member, but in the alignment device of the second embodiment, an annular hole is used.
Other configurations are the same as those of the alignment apparatus of the first embodiment.

(Substrate holding method)
In the substrate holding method, the first jig 22 is brought into contact with the circumferential portion of the first optical substrate 12 and vacuum suction is performed by a vacuum suction device (not shown). The first optical substrate 12 is held.
In a similar manner, the third jig 30 is brought into contact with the circumferential portion of the second optical base material 14, and the third jig 30 holds the second optical base material 14.

(Alignment and molding method)
Hereinafter, the alignment method of the composite optical element in the second embodiment will be described.
The image detector 42 detects an image obtained by the collimated light having passed through the image forming member (ring zone hole) 40 being transmitted through the first optical base 12.
Therefore, based on the obtained image and the eccentricity adjustment amount derived by a known eccentricity adjustment amount calculation method, the first jig 22 is moved to the xy perpendicular to the reference optical axis L0 via the control personal computer 44. Move in the axial direction. In this way, the first optical core c1 of the surface 12a opposite to the bonding surface 12b in the first optical substrate 1 is made to coincide with the reference optical axis L0. Thereby, the position adjustment of the first optical core c1 to the reference optical axis L0 is completed.

  Next, the pattern of the image forming member 40 is changed, the eccentric image about the second optical core c2 is detected, and the eccentricity adjustment amount of the bonding surface 12b in the first optical substrate 12 is calculated. Thereafter, the first eccentricity adjusting means 21 including the first jig 22 is moved by the second jig 26, whereby the first optical base 12 is moved to the first adjusting means 21 and the second adjusting means 21. The second optical core c2 is made to coincide with the reference optical axis L0 by moving in the direction inclined by θ with respect to the reference optical axis L0 together with the adjusting means 25.

Next, similarly, the optical axis of the second optical substrate 14 (the axis connecting the third optical core c3 and the fourth optical core c4) and the reference optical axis L0 are adjusted.
That is, the third optical core c3 is made to coincide with the reference optical axis L0 by moving the third jig 30 in the direction perpendicular to the reference optical axis L0 (the xy axis direction). Further, the third adjusting means 29 including the third jig 30 is moved by the fourth jig 34, whereby the second optical base material 14 is moved to the third adjusting means 29 and the fourth adjusting means 33. At the same time, it is moved in the direction inclined by θ with respect to the reference optical axis L0, and the fourth optical core c4 is made to coincide with the reference optical axis L0.
As described above, the first to fourth optical cores coincide with the reference optical axis L0, whereby the respective optical surfaces are eccentrically adjusted with high accuracy.

In the second embodiment, the energy curable resin is stretched before the eccentricity adjustment of the first optical substrate 12. The ultraviolet curable resin 16 is supplied to the first optical substrate 12 by supply means (not shown). Thereafter, the second optical base material 14 is moved (in a direction parallel to the reference optical axis L0), the second optical base material 14 and the ultraviolet curable resin 16 are brought into contact with each other, and a predetermined resin thickness is obtained. Move close (down) until
Then, alignment of the first optical substrate 12 is performed, and then alignment of the second optical substrate 14 is performed, and the optical core c1 of the four surfaces 12a, 12b, 14a, 14b including the resin layer is performed. The eccentricity adjustment for c4 is performed.

  In the alignment device of the second embodiment, the control personal computer 44 is superposed on the position of the optical surface between the first optical substrate 12 and the second optical substrate 14 as in the first embodiment. It is obtained in advance while promoting the polymerization reaction of the energy curable resin layer 16 by irradiating light or heat energy through the energy irradiation means with the energy curable resin layer 16 in a low rate sandwiched therebetween. Using the predicted value of the polymerization rate of the energy curable resin layer 16 in the composite optical element 10 for the given energy irradiation time, polymerization is performed in the predicted value of the polymerization rate of the energy curable resin layer 16 in the composite optical element 10 with respect to the energy irradiation time. The first and second optics in the composite optical element 10 within the energy irradiation time predicted to be between 0% and 70%. The eccentricity adjustment via the eccentricity adjustment means for at least one of the optical substrates among the eccentricity adjustments via the first to fourth eccentricity adjustment means 21, 25, 29, 33 for the materials 12, 14 is performed for a predetermined time. When the energy irradiation time when the polymerization rate is predicted to exceed 70% in the predicted value of the polymerization rate of the energy curable resin layer 16 in the composite optical element 10 with respect to the energy irradiation time passes through the energy irradiation means. First to fourth deviations with respect to the first and second optical substrates 12 and 14 in the composite optical element 10 performed while accelerating the polymerization reaction of the energy curable resin layer 16 by irradiating light or heat energy. The application of the adjustment load for moving the optical base material in the direction in the eccentricity adjustment via the center adjustment means 21, 25, 29, 33 is solved. It is controlled to be.

  The predicted value of the polymerization rate of the polymerizable resin layer 16 in the composite optical element 10 with respect to the polymerization reaction time sandwiches the polymerizable resin layer 16 in a state where the polymerization rate is low at the position of the optical surface between the optical substrates 12 and 14. It is obtained by measuring the Young's modulus of the polymerizable resin layer at every predetermined polymerization reaction time while accelerating the polymerization reaction of the polymerizable resin layer 16 on the test piece, and storing it in the control personal computer 44. Has been.

  Further, the control personal computer 44 is within the polymerization reaction time in which the polymerization rate is predicted to be between 0% and 70% in the predicted value of the polymerization rate of the polymerizable resin layer 16 in the composite optical element with respect to the polymerization reaction time. At least one or more of the eccentricity adjustments through the first to fourth eccentricity adjustment means 21, 25, 29, 33 with respect to the first and second optical base materials 12, 14 in the composite optical element 10. When performing the eccentricity adjustment via the eccentricity adjusting means for the base material while promoting the polymerization reaction of the polymerizable resin layer 16, the application of the adjustment load to the optical base material in the eccentricity adjustment step is released once or more. It can also be controlled to do.

  Further, the control personal computer 44 uses the master curve of the appropriate adjustment load for the predicted value of the polymerization rate of the energy curable resin layer 16 in the composite optical element 10 with respect to the energy irradiation time acquired in advance. An adjustment load necessary to move the optical base material in the direction in the eccentricity adjustment is controlled.

  The master curve of the appropriate adjustment load for the predicted value of the polymerization rate of the energy curable resin layer 16 in the composite optical element 10 with respect to the energy irradiation time is the optical surface between the first and second optical substrates 12 and 14. Using a test piece in which a polymerizable resin layer 16 having a low polymerization rate is sandwiched at a position, while promoting the polymerization reaction of the polymerizable resin layer 16 in the test piece, the test piece The first and second optical groups in the composite optical element 10 with respect to the polymerization reaction time are measured by measuring an adjustment load necessary for moving each optical substrate in a direction perpendicular to or inclined with respect to the reference optical axis. Of the eccentric adjustments through the first to fourth eccentric adjustment means 21, 25, 29, 33 with respect to the materials 12, 14, the eccentricity adjustment hand for at least one optical substrate In the eccentricity adjustment through the optical substrate, the predicted value of the adjustment load necessary for moving the optical substrate in the composite optical element 10 corresponding to the optical substrate of the test piece in the vertical direction or the tilt direction with respect to the reference optical axis is calculated. The master curve of an appropriate adjustment load for the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time is acquired and stored in the control personal computer 44.

(Curing and peeling method)
After alignment, a light source 48 (a metal halide lamp is used in the second embodiment), which is a curing means, is activated via the control personal computer 44, and the ultraviolet curable resin 16 is irradiated with ultraviolet rays via the half mirror 46. Do.
Further, after the ultraviolet curable resin 16 is cured, the release claw jig 52 is brought into contact with the edge portion of the first optical substrate 12, and then the second optical substrate 14 is raised in the direction of the reference optical axis L0. Thus, the second optical substrate 14 is separated from the ultraviolet curable resin layer 16. As a result, a two-layer composite optical element 11 composed of the first optical base 12 and the ultraviolet curable resin 16 is obtained.
Other configurations and operational effects are substantially the same as those of the alignment apparatus of the first embodiment.

Third Embodiment FIG. 11 is an explanatory view showing the overall configuration of a composite optical element alignment device 20 according to a third embodiment of the present invention. In addition, the same code | symbol is attached | subjected and demonstrated to the member which is the same as that of 1st embodiment, or corresponds.
(Configuration of manufacturing equipment)
The alignment device for a composite optical element according to the third embodiment is integrally provided with a light source 38 that emits laser light as adjustment light and an image detector 42 that detects the reflected light, and the light source 48 is a reference optical axis. The half mirror 48 shown in FIG. 5 is not provided, provided on L0.
Other configurations and operational effects are substantially the same as those of the alignment apparatus of the first embodiment.

  The method for aligning a composite optical element of the present invention is useful in the field of manufacturing a composite optical element having a resin layer between optical substrates.

DESCRIPTION OF SYMBOLS 10 Composite optical element 12 1st optical base material 12a The surface 12b on the opposite side to a bonding surface 14b Bonding surface 14 The 2nd optical base material 14a The surface on the opposite side to a bonding surface 14b Bonding surface 16 UV curable type Resin (layer)
20 Compound optical element alignment device 21 First eccentricity adjusting means 22 First jig 23 Driving rod 24 First motor 25 Second eccentricity adjusting means 26 Second jig 26a Curved surface 26 'Inclined guide Member 26a 'curved surface 27 driving rod 28 second motor 29 third eccentricity adjusting means 30 third jig 31 driving rod 32 third motor 33 fourth eccentricity adjusting means 34 fourth jig 34a curved surface 34 'inclined guide member 34a' curved surface 35 drive rod 36 fourth motor 38 laser light source 40 image forming member 42 image detector 44 control personal computer 46 half mirror 48 light source L0 reference optical axis c1 first optical core c2 second optical Core c3 Third optical core c4 Fourth optical core

Claims (26)

Polymerization of the polymerizable resin layer in a state where a polymerizable resin layer having a low polymerization rate is sandwiched at a position of an optical surface of the optical base material between a plurality of predetermined members on which at least one side forms an optical base material In the alignment method of a composite optical element used in the manufacturing process of a composite optical element comprising an optical substrate on at least one side of the polymerizable resin layer and the polymerizable resin layer, which is completed by promoting a reaction,
Applying an adjustment load for moving each of the optical base materials in a direction perpendicular to or inclined with respect to a predetermined reference optical axis serving as a reference for decentering adjustment, the respective optical materials of the respective optical base materials Comprising a plurality of eccentricity adjustment steps for aligning the core with the reference optical axis;
In advance, a predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time,
Polymerization of the polymerizable resin layer in a state where a polymerizable resin layer having a low polymerization rate is sandwiched at a position of an optical surface of the optical base material between a plurality of predetermined members on which at least one side forms an optical base material While promoting the reaction, the polymerization rate is predicted to be between 0% and 70% in the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time. The decentering adjustment step for at least one optical substrate among all the decentering adjustment steps for all optical substrates in the composite optical element is performed for a predetermined time, and the polymerization in the composite optical element for the polymerization reaction time is performed. The polymerization reaction of the polymerizable resin layer is promoted when the polymerization reaction time is predicted to exceed 70% in the predicted value of the polymerization rate of the polymerizable resin layer. Core method modulating the composite optical element characterized by releasing the application of the adjustment force for moving the said direction with respect to the optical substrate in all eccentricity adjusting step of performing want.   Within the polymerization reaction time predicted to be between 0% and 70% in the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time, in the composite optical element When performing the eccentricity adjustment step for at least one optical substrate among all the eccentricity adjustment steps for all optical substrates while promoting the polymerization reaction of the polymerizable resin layer, in the eccentricity adjustment step The method of aligning a composite optical element according to claim 1, wherein the application of the adjustment load to the optical substrate is canceled one or more times. In advance, using a test piece in a state of sandwiching a polymerizable resin layer in a state where the polymerization rate is low at the position of the optical surface of the optical base material between a plurality of predetermined members forming at least one side of the optical base material, In order to move each optical substrate in the test piece in a direction perpendicular or inclined with respect to the reference optical axis every predetermined polymerization reaction time while promoting the polymerization reaction of the polymerizable resin layer in the test piece In the eccentricity adjustment step for at least one optical substrate among all the eccentricity adjustment steps for all optical substrates in the composite optical element with respect to the polymerization reaction time by measuring the necessary adjustment load, Predicted value of adjustment load required to move the optical base material in the composite optical element corresponding to the optical base material of the test piece in the vertical direction or the inclined direction with respect to the reference optical axis , Previously acquired as a master curve proper adjustment load for the predicted value of the rate of polymerization of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time,
3. The alignment of the composite optical element according to claim 1, wherein an adjustment load necessary for moving the composite optical element in the direction relative to the optical base is controlled using the master curve. Method.   When performing the eccentricity adjustment step for at least one optical substrate among all the eccentricity adjustment steps for all optical substrates in the composite optical element while promoting the polymerization reaction of the polymerizable resin layer, The method for aligning a composite optical element according to claim 1, wherein in the eccentricity adjusting step, a heating step of heating the polymerizable resin layer is used in combination.   5. The composite according to claim 1, wherein all eccentricity adjustment steps for all optical base materials in the composite optical element are performed before the polymerization reaction of the polymerizable resin layer is promoted. Optical element alignment method.   While promoting the polymerization reaction of the polymerizable resin layer, the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time is predicted to be between 0% and 70%. 6. The alignment of a composite optical element according to claim 1, wherein all eccentricity adjustment steps for all optical substrates in the composite optical element are performed for a predetermined time within a polymerization reaction time. Method. The energy curable resin layer in a state where an energy curable resin layer having a low polymerization rate is sandwiched between positions of the optical surface of the optical substrate between a plurality of predetermined members on which at least one side forms an optical substrate. An optical substrate on at least one side of the energy curable resin layer and the energy curable resin layer, which is completed by accelerating a polymerization reaction of the energy curable resin layer through light or heat energy irradiation to In a method of aligning a composite optical element used in a manufacturing process of a composite optical element comprising:
Applying an adjustment load for moving each of the optical base materials in a direction perpendicular to or inclined with respect to a predetermined reference optical axis serving as a reference for decentering adjustment, the respective optical materials of the respective optical base materials A plurality of eccentricity adjusting steps for aligning the core with the reference optical axis;
An energy irradiation step of irradiating the energy curable resin layer with light or heat energy in a state where the polymerization rate is low,
With
In advance, a predicted value of the polymerization rate of the energy curable resin layer in the composite optical element with respect to the energy irradiation time,
Through the energy irradiation step with an energy curable resin layer having a low polymerization rate sandwiched between the optical surfaces of the optical substrate between a plurality of predetermined members forming at least one side of the optical substrate. The polymerization rate is between 0% and 70% in the predicted value of the polymerization rate of the energy curable resin layer in the composite optical element with respect to the energy irradiation time while promoting the polymerization reaction of the energy curable resin layer. Within the energy irradiation time predicted to be present, the decentering adjustment step for at least one optical substrate among all the decentering steps for all optical substrates in the composite optical element is performed for a predetermined time, and the energy In the predicted value of the polymerization rate of the energy curable resin layer in the composite optical element with respect to the irradiation time, the polymerization rate is 70. The direction relative to the optical substrate in all eccentricity adjustment steps performed while promoting the polymerization reaction of the energy curable resin layer through the energy irradiation step when the energy irradiation time predicted to exceed A method of aligning a composite optical element, wherein the application of an adjustment load for moving the optical fiber to a position is canceled.   The composite according to claim 7, wherein the composite is used in a manufacturing process of a composite optical element including another optical base so as to face the optical surface of the optical base with the energy curable resin layer interposed therebetween. Optical element alignment method.   Within the energy irradiation time predicted to be between 0% and 70% in the predicted value of the polymerization rate of the energy curable resin layer in the composite optical element with respect to the energy irradiation time, the composite optical element The decentering adjustment step for at least one optical substrate among all the decentering adjustment steps for all optical substrates in is performed while promoting the polymerization reaction of the energy curable resin layer through the energy irradiation step. 9. The method of aligning a composite optical element according to claim 7 or 8, wherein the adjustment load applied to the optical base material in the eccentricity adjustment step is released once or more. In advance, using a test piece in a state in which an energy curable resin layer in a state where the polymerization rate is low is sandwiched at a position of the optical surface of the optical base material between a plurality of predetermined members on which at least one side forms an optical base material, Each optical base material in the test piece for each predetermined energy irradiation time while accelerating the polymerization reaction of the energy curable resin layer in the test piece by irradiating the test piece with light or heat energy. All eccentricity adjustment steps for all optical substrates in the composite optical element with respect to the energy irradiation time by measuring an adjustment load necessary for moving the lens in a direction perpendicular to or inclined with respect to the reference optical axis In the eccentricity adjustment step for at least one of the optical substrates, the composite optical element corresponding to the optical substrate of the test piece Predicting the adjustment load necessary to move the optical base material in the direction perpendicular or inclined with respect to the reference optical axis, predicting the polymerization rate of the energy curable resin layer in the composite optical element with respect to the energy irradiation time Acquire as a master curve of the appropriate adjustment load for the value,
The composite optical element according to claim 7, wherein an adjustment load necessary for moving the composite optical element in the direction relative to the optical base is controlled using the master curve. Alignment method.   The decentering adjustment step for at least one optical substrate among all the decentering steps for all optical substrates in the composite optical element promotes the polymerization reaction of the polymerizable resin layer through the energy irradiation step. The method for aligning a composite optical element according to any one of claims 7 to 10, wherein in the eccentricity adjusting step, a heating step of heating the energy curable resin layer is used in combination when the step is performed. .   8. All eccentricity adjustment steps for all optical substrates in the composite optical element are performed before promoting the polymerization reaction of the energy curable resin layer through the energy irradiation step. 11. A method for aligning a composite optical element according to any one of 11 above.   While promoting the polymerization reaction of the energy curable resin layer through the energy irradiation step, the polymerization rate is 0% to 70% in the predicted value of the polymerization rate of the energy curable resin layer in the composite optical element with respect to the energy irradiation time. The decentering adjustment step for all optical substrates in the composite optical element is performed for a predetermined time within the energy irradiation time predicted to be between 1% and 15%. A method for aligning a composite optical element according to the above. Polymerization of the polymerizable resin layer in a state where a polymerizable resin layer having a low polymerization rate is sandwiched at a position of an optical surface of the optical base material between a plurality of predetermined members on which at least one side forms an optical base material In the alignment apparatus for a composite optical element used in the manufacturing process of a composite optical element comprising an optical substrate on at least one side of the polymerizable resin layer and the polymerizable resin layer, which is completed by promoting a reaction,
Applying an adjustment load for moving each of the optical base materials in a direction perpendicular to or inclined with respect to a predetermined reference optical axis serving as a reference for decentering adjustment, the respective optical materials of the respective optical base materials A plurality of eccentricity adjusting means for aligning the core with the reference optical axis;
Polymerization of the polymerizable resin layer in a state where a polymerizable resin layer having a low polymerization rate is sandwiched at a position of an optical surface of the optical base material between a plurality of predetermined members on which at least one side forms an optical base material While promoting the reaction, using the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time determined in advance, the polymerization resin layer in the composite optical element with respect to the polymerization reaction time Within the polymerization reaction time that is predicted to be between 0% and 70% in the predicted value of the polymerization rate, the deviation through all the eccentricity adjusting means for all the optical substrates in the composite optical element. Decentering adjustment is performed for a predetermined time via an eccentricity adjusting means for at least one optical substrate among the core adjustments, and the polymerization in the composite optical element with respect to the polymerization reaction time When the polymerization reaction time predicted to exceed 70% in the predicted value of the polymerization rate of the resin layer elapses, all the eccentricity adjustment means that are performed while promoting the polymerization reaction of the polymerizable resin layer are performed. A centering device for a composite optical element, comprising: an eccentricity adjustment operation control unit that controls to cancel application of an adjustment load for moving the optical base material in the direction in the eccentricity adjustment.   The eccentricity adjusting operation control means is a polymerization reaction in which the polymerization rate is predicted to be between 0% and 70% in the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time. Within the time, the eccentricity adjustment via the eccentricity adjustment means for at least one optical substrate among the eccentricity adjustments via all the eccentricity adjustment means for all the optical substrates in the composite optical element When performing while promoting the polymerization reaction of the polymerizable resin layer, it is controlled to cancel the application of the adjustment load to the optical base material in the eccentricity adjustment via the eccentricity adjustment means one or more times. The alignment apparatus for a composite optical element according to claim 14.   The eccentricity adjustment operation control means uses the master curve of the appropriate adjustment load for the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time acquired in advance, and the eccentricity adjustment means 16. The aligning device for a composite optical element according to claim 14 or 15, wherein an adjustment load necessary for moving the optical base material in the direction in the eccentricity adjustment via the head is controlled. Furthermore, a heating means for heating the polymerizable resin layer is provided,
The eccentricity adjustment operation control means is provided via an eccentricity adjustment means for at least one of the optical substrates among the eccentricity adjustments via all the eccentricity adjustment means for all the optical substrates in the composite optical element. When the eccentricity adjustment is performed while promoting the polymerization reaction of the polymerizable resin layer, in the eccentricity adjustment through the eccentricity adjusting means, the polymerizable resin layer is also heated through the heating means. The alignment apparatus for a composite optical element according to any one of claims 14 to 16, wherein the alignment is controlled as described above.   The eccentricity adjustment operation control means adjusts the eccentricity via all the eccentricity adjustment means for all optical substrates in the composite optical element before promoting the polymerization reaction of the polymerizable resin layer. 18. The alignment apparatus for a composite optical element according to claim 14, wherein the alignment apparatus is controlled.   The eccentricity adjusting operation control means promotes the polymerization reaction of the polymerizable resin layer, and the polymerization rate in the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time is from 0% to 70%. % Within a polymerization reaction time predicted to be up to 5%, control is performed so that decentering adjustment is performed for a predetermined time through all decentering adjusting means for all optical substrates in the composite optical element. An aligning device for a composite optical element according to any one of claims 14 to 18. The energy curable resin layer in a state where an energy curable resin layer having a low polymerization rate is sandwiched between positions of the optical surface of the optical substrate between a plurality of predetermined members on which at least one side forms an optical substrate. An optical substrate on at least one side of the energy curable resin layer and the energy curable resin layer, which is completed by accelerating a polymerization reaction of the energy curable resin layer through light or heat energy irradiation to In a composite optical element alignment apparatus used in a manufacturing process of a composite optical element comprising:
Applying an adjustment load for moving each of the optical base materials in a direction perpendicular to or inclined with respect to a predetermined reference optical axis serving as a reference for decentering adjustment, the respective optical materials of the respective optical base materials A plurality of eccentricity adjusting means for aligning the core with the reference optical axis;
Energy irradiation means for irradiating the energy curable resin layer with light or heat energy at a low polymerization rate;
With the energy irradiating resin layer sandwiched between the plurality of predetermined members having at least one side forming the optical substrate and the optical surface of the optical substrate in a state where the polymerization rate is low, the energy irradiation means is interposed. The polymerization rate of the energy curable resin layer in the composite optical element is predicted for the energy irradiation time determined in advance while accelerating the polymerization reaction of the energy curable resin layer by irradiating light or heat energy. All the values in the composite optical element within the energy irradiation time in which the polymerization rate is predicted to be between 0% and 70% in the predicted value of the polymerization rate in the composite optical element with respect to the energy irradiation time. Of at least one optical substrate out of all the eccentricity adjustment means through all the eccentricity adjusting means for the optical substrate. The eccentricity adjustment through the eccentricity adjusting means is performed for a predetermined time, and the polymerization rate is predicted to exceed 70% in the predicted value of the polymerization rate of the energy curable resin layer in the composite optical element with respect to the energy irradiation time. When the energy irradiation time elapses, all the eccentricity adjustment means that perform the polymerization reaction of the energy curable resin layer by irradiating light or heat energy through the energy irradiation means while promoting the polymerization reaction. A centering device for a composite optical element, comprising: an eccentricity adjustment operation control unit that controls to cancel application of an adjustment load for moving the optical base material in the direction in the center adjustment.   21. The composite according to claim 20, wherein the composite is used in a manufacturing process of a composite optical element including another optical base so as to face the optical surface of the optical base with the energy curable resin layer interposed therebetween. Optical element alignment device.   The eccentricity adjusting operation control means is an energy whose polymerization rate is predicted to be between 0% and 70% in the predicted value of the polymerization rate of the energy curable resin layer in the composite optical element with respect to the energy irradiation time. Within the irradiation time, the eccentricity adjustment via the eccentricity adjusting means for at least one optical substrate among the eccentricity adjustments via all the eccentricity adjusting means for all the optical substrates in the composite optical element. When performing the polymerization reaction of the energy curable resin layer by irradiating light or heat energy through the energy irradiating means, the optical base material in the eccentricity adjustment through the eccentricity adjusting means The control of the composite optical element according to claim 20 or 21, wherein the control is performed so as to cancel the application of the adjustment load to at least once. Core devices.   The eccentricity adjustment operation control means uses the master curve of the appropriate adjustment load for the predicted value of the polymerization rate of the energy curable resin layer in the composite optical element with respect to the energy irradiation time acquired in advance. 23. The alignment apparatus for a composite optical element according to claim 20, wherein an adjustment load necessary for moving the optical base material in the direction in the eccentricity adjustment via the means is controlled. . Furthermore, a heating means for heating the energy curable resin layer is provided,
The eccentricity adjustment operation control means is provided via an eccentricity adjustment means for at least one of the optical substrates among the eccentricity adjustments via all the eccentricity adjustment means for all the optical substrates in the composite optical element. When the eccentricity adjustment is performed while promoting the polymerization reaction of the energy curable resin layer, in the eccentricity adjustment via the eccentricity adjustment means, the heating of the polymerizable resin layer via the heating means is also performed. 24. The alignment apparatus for a composite optical element according to claim 20, wherein the alignment is controlled so as to be performed.   The eccentricity adjustment operation control means adjusts the eccentricity via all the eccentricity adjustment means for all optical substrates in the composite optical element before promoting the polymerization reaction of the energy curable resin layer. The alignment apparatus for a composite optical element according to any one of claims 20 to 24, wherein   The eccentricity adjustment operation control means promotes the polymerization reaction of the energy curable resin layer, and the polymerization rate is 0% in the predicted value of the polymerization rate of the polymerizable resin layer in the composite optical element with respect to the polymerization reaction time. Within a polymerization reaction time predicted to be between 70% and 70%, control is performed so that decentering adjustment is performed for a predetermined time via all decentering adjusting means for all optical substrates in the composite optical element. The aligning device for a composite optical element according to any one of claims 20 to 25.

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