JP2006160564A - Optical device forming apparatus and optical device manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To mass-produce a highly precision optical device by press-forming. <P>SOLUTION: A first heating part 51-1 and a second heating part 51-2 is brought into contact with a forming mold to heat the forming mold 12. The heating parts (the first heating part 51-1 and a second heating part 51-2) are moved to be in contact with the forming mold 12 by the less number of servomotors than the heating parts. The forming mold 12 after heated is pressurized by a pressurizing part 52 to form a forming base material 11 in the forming mold 12. The forming mold 12 is brought into contact with a first cooling part 53-1 and a second cooling part 53-2 to cool the forming mold 12 after pressurized. The cooling parts (the first cooling part 53-1 and the second cooling part 53-2) are moved to be in contact with the forming mold 12 by the less number of servomotors 1-3 than the cooling parts. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a pressure molding technique, and more particularly to a pressure molding technique for an optical element such as a glass lens used in an optical apparatus.

  As a method of manufacturing an optical element with high accuracy and at low cost, a molding die having a functional surface of optical accuracy is used, and pressure molding is performed on a molding material such as a glass material at a high temperature to form an optical element. A method of omitting a process such as polishing has been put into practical use (see, for example, Patent Document 1). This method has a feature that it is easy to form an optical element having an aspherical surface. Hereinafter, this technique will be described.

FIG. 2 shows an example of a conventional optical element molding apparatus.
In the molding chamber 25 of the optical element molding apparatus 200, in order to prevent oxidation of the molding die 12 and the molding apparatus 200, a gas inert to the metal material forming the molding die 12 and the molding apparatus 200 is provided. Is filled from the nitrogen pipe 26.

  In the molding apparatus 200, the steps of heating, pressurizing, and cooling are performed by sandwiching the molding material 11 inside the molding die 12 that is used to pressurize the molding material 11 and transfer the optical functional surface. When one process is finished, the mold 12 is moved from the right end in the figure to the left and sent to the next process.

  Details of the structure of the mold 12 are shown in FIG. As shown in the figure, the molding die 12 is configured by combining an upper die 12a, a lower die 12b, and a body die 12c. An optical element is formed by sandwiching the molding material 11 between the upper mold 12a and the lower mold 12b of the molding mold 12 and pressurizing the molding material 11 with the upper mold 12a and the lower mold 12b while heating.

Returning to the description of FIG. The molding die 12 having the molding material 11 sandwiched therein is first put into the inlet chamber 21.
The mold moving tool 13 is for moving the mold 12 in the molding chamber 25.

Details of the structure of the mold moving tool 13 are shown in FIG. 2 shows a form of the mold moving tool 13 viewed from the side, but FIG. 4 shows a form of the mold moving tool 13 viewed from above.
In FIG. 4, the exercise device 14 moves the mold moving tool 13 having a comb shape.

  When the operation of the exercise device 14 is started, first, the longitudinal movement cylinder 15 operates to move the mold moving tool 13 downward in the figure, and a plurality of portions corresponding to the comb teeth are arranged in the figure. Between the rows of molds 12 that are in between. Subsequently, the lateral movement cylinder 16 operates to move the mold moving tool 13 in the left direction in FIG. At this time, the portion corresponding to the comb teeth pushes the mold 12 leftward.

  After that, when the mold 12 is moved to the position of the adjacent mold 12, the longitudinal movement cylinder 15 operates again to move the mold moving tool 13 upward in the figure, and the above comb teeth Corresponding portions are extracted from the row of molds 12. Thereafter, the lateral movement cylinder 16 operates to move the mold moving tool 13 in the right direction in FIG. As a result, the mold moving tool 13 returns to the original position.

The exercise device 14 repeatedly performs the above-described movement of the mold moving tool 13. As a result, the mold 12 moves to the left in the figure and is sequentially sent to the position of the mold 12 on the left side.
In FIG. 2, a total of five heat exchange members 30 are arranged in the vertical direction of the movement destination position of the mold 12 to which the mold moving tool 13 moves. In the heat exchange member 30, a heater 33 and a thermocouple 34 are sandwiched between an abutting plate 31 that is in contact with the mold 31 and has good thermal conductivity and a heat insulating material 32 that is fixed to the press shaft 42. The molding die 12 in which the molding material 11 is contained can be heated by contacting the molding die 12. The thermocouple 34 is provided for measuring the temperature of the contact plate 31 heated by the heater 33. The contact plate 31 is measured by a thermocouple 34 using a thermostat (not shown). The temperature is controlled to be a predetermined temperature according to the result.

  Servo motors 41-1, 41-2, 41-3, 41-4, and 41-5 move the upper heat exchange member 30 fixed to the press shaft 42 downward to contact the mold 12. This is a prime mover that presses the molding die 12 with a predetermined force to mold the molding material 11 in the molding die 12, and is disposed outside the molding chamber 25.

  Among these, the servo motors 41-1 and 41-2 mainly include the two upper heat exchange members 30 constituting the first heating unit 51-1 and the second heating unit 51-2 that heat the molding die 12. Each is moved and brought into contact with the mold 12.

  The servo motor 41-3 presses the upper heat exchange member 30 constituting the pressurizing unit 52 that pressurizes the molding die 12 heated by the heating unit 51 and molds the molding material 11 in the molding die 12. The mold 12 is moved to contact and pressurize.

  Furthermore, the servomotors 41-4 and 41-5 mainly cool the molding die 12 by contacting the molding die 12 after being pressurized by the pressurizing unit 52 (the temperature becomes a predetermined temperature lower than that of the pressurizing unit 52). The temperature of the heater 53 is controlled so that the mold 12 is gradually cooled.) The upper two heat exchange members 30 constituting the first cooling part 53-1 and the second cooling part 53-2 are moved respectively. Contact the mold 12.

  First, the molding die 12 sandwiching the molding material 11 is placed in the inlet chamber 21 from the outside of the molding apparatus 200. Then, the molding chamber entrance shutter 23 opens upward, and the mold moving tool 13 pulls the molding die 12 into the molding chamber 23 and places the molding die 12 at the position of the first heating unit 51-1. At this time, the molding chamber entrance shutter 23 closes downward. At this time, the molding chamber outlet shutter 24 is closed downward, and the molding chamber 23 is filled with nitrogen gas fed from the nitrogen pipe 26.

  Here, the servo motor 41-1 operates to lower the upper heat exchange member 30 constituting the first heating unit 51-1 and bring it into contact with the mold 12, and the mold 12 is predetermined at a predetermined temperature from above and below. Heat for hours. When this first heating step is completed, the servo motor 41-1 operates to raise the upper heat exchange member 30 constituting the first heating unit 51-1, and then the mold moving tool 13 operates to form the mold. 12 is moved to the position of the second heating unit 51-2 and disposed. Next, the servo motor 41-2 is operated to lower the upper heat exchange member 30 constituting the second heating unit 51-2 to come into contact with the molding die 12, and the molding die 12 is predetermined at a predetermined temperature from above and below. Heat for hours. When this second heating step is completed, the servo motor 41-2 operates to raise the upper heat exchange member 30 constituting the second heating unit 51-2, and then the mold moving tool 13 operates to form the mold. 12 is moved to the position of the pressure unit 52 and arranged.

  Next, the servo motor 41-3 is operated to lower the upper heat exchange member 30 constituting the pressurizing unit 52 to press the molding die 12, and while heating the molding die 12 at a predetermined temperature from above and below, Pressurize for a period of time. When molding of the molding material 11 into a predetermined shape is completed by this pressurization step, the servo motor 41-3 operates to raise the upper heat exchange member 30 constituting the pressurizing unit 52, and then the mold moving tool 13 Operates to move the mold 12 to the position of the first cooling unit 53-1 and arrange it.

  Next, the servo motor 41-4 is operated to lower the upper heat exchange member 30 constituting the first cooling section 53-1, and contact the molding die 12, and the molding die 12 is predetermined at a predetermined temperature from above and below. Cool for hours. When this first cooling step is completed, the servo motor 41-4 operates to raise the upper heat exchange member 30 constituting the first cooling unit 53-1, and then the mold moving tool 13 operates to form the mold. 12 is moved to the position of the second cooling section 53-2 and arranged. Next, the servo motor 41-5 is operated to lower the upper heat exchange member 30 constituting the second cooling section 53-2, thereby cooling the mold 12 from above and below at a predetermined temperature for a predetermined time. When this second cooling step is completed, the servo motor 41-5 operates to raise the upper heat exchange member 30 constituting the second cooling unit 53-2.

  Then, the molding chamber outlet shutter 24 opens upward, and the mold moving tool 13 pushes the molding die 12 out of the molding chamber 23 and arranges it in the outlet chamber 22. Thereafter, the molding chamber outlet shutter 24 closes downward.

In this way, the molding die 12 is taken out from the molding apparatus 200, and the molded optical element is taken out from the inside thereof to complete the production of the optical element.
In the above description, the process in which the optical element is manufactured by paying attention to one mold 12 has been described. However, the mold moving tool 13 sequentially transfers the plurality of molds 12 at regular time intervals. The optical element is mass-produced by sequentially feeding the molding die 12 sandwiching the molding material 11 into the molding apparatus 200.
JP-A-4-164826

  In the shaping | molding apparatus 200 mentioned above, with respect to each of the 1st heating part 51-1, the 2nd heating part 51-2, the pressurization part 52, the 1st cooling part 53-1, and the 2nd cooling part 53-2. Since the servo motors 41-1, 41-2, 41-3, 41-4, and 41-5 are provided one by one, the apparatus cost is expensive. Here, the heating step and the cooling step are sufficient if the heat exchanging member 30 is brought into contact with the mold 12, and it is not necessary to highly control the force for pressing the mold 12 as in the pressurizing step. .

  In the molding apparatus 200 described above, the interior of the molding chamber 25 is maintained in a nitrogen atmosphere, but the press shaft 42 is moved into the molding chamber 25 by opening and closing the molding chamber inlet shutter 23 and the molding chamber outlet shutter 24. Outside air enters the molding chamber 25 through the gap between the hole to be passed and the press shaft 42, and instead, nitrogen gas in the molding chamber 25 leaks to the outside. Therefore, not only the mold 12 and the molding apparatus 200 are oxidized due to an increase in the oxygen concentration in the molding chamber 25, but the temperature of the heat exchange member 30 is lowered from a predetermined set temperature, or the temperature is uneven. In some cases, the quality of the manufactured optical element may become unstable.

  The present invention has been made in view of the above-described problems, and a problem to be solved is to enable mass production of a highly accurate optical element by pressure molding at low cost.

  An optical element molding apparatus according to an aspect of the present invention includes a plurality of heating units that heat the molding die by contacting the molding die, and a first prime mover that moves the heating unit to contact the molding die. A pressurizing unit that pressurizes the mold after being heated to form a molding material in the mold, and a cooling unit that cools the mold after the pressurization by contacting the mold And a second prime mover that moves the cooling means to contact the mold, and the first prime mover moves the heating means in a smaller number than the heating means. The above-described problems are solved by this feature.

  An optical element molding apparatus according to another aspect of the present invention includes a heating unit that heats the molding die by contacting the molding die, and a first unit that moves the heating unit to contact the molding die. And the pressurizing means for pressurizing the heated mold and molding the molding material in the mold, and cooling the pressed mold by contacting the mold A plurality of cooling means and a second prime mover that moves the cooling means to contact the mold, and the second prime mover moves the cooling means in a smaller number than the cooling means. The above-described problems are solved by this feature.

  In the optical element molding apparatus according to the present invention described above, heating, pressurization, and cooling are all performed in a molding chamber filled with an inert gas, and are arranged adjacent to the molding chamber. And a chamber that is filled with the inert gas after the molding die is charged from the outside, and the molding die is moved from the chamber after being filled with the inert gas to the molding chamber. The heating, the pressurization, and the cooling may be performed.

  In the above-described optical element molding apparatus according to the present invention, heating, pressurization, and cooling are all performed in a molding chamber filled with an inert gas, and the first and second prime movers are used for the molding. You may make it further provide the bellows member which is arrange | positioned outdoors and covers the axis | shaft which transmits the force produced with the said 1st and 2nd prime mover to a heating means and a cooling means, respectively.

  In addition, the manufacturing method of the optical element characterized by manufacturing by the pressure molding of the shaping | molding raw material performed using the optical element shaping | molding apparatus which concerns on one of this invention mentioned above also concerns this invention.

  According to the present invention, there is an effect that mass production by pressure molding of a highly accurate optical element can be performed at a low cost.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows the configuration of an optical element molding apparatus for carrying out the present invention. In the molding apparatus 100 shown in the figure, the same components as those in the conventional optical element molding apparatus 200 shown in FIG. Here, the detailed description thereof will be omitted because it overlaps, and the description will focus on the differences between FIG. 1 and FIG. The structure of the mold 12 is the same as that shown in FIG. 3, and the structure / operation of the mold moving tool 13 is also the same as that shown in FIG.

  The servo motors 1-1, 1-2, and 1-3 move the upper heat exchanging member 30 fixed to the press shaft 42 downward to contact the forming die 12 and are formed with a predetermined force. A prime mover that pressurizes the mold 12 to mold the molding material 11 in the molding mold 12, and is disposed outside the molding chamber 25.

  Here, the shaft 2-1 of the servo motor 1-1 is fixed to one surface of a connecting member 3-1, which is a plate material, and two press shafts 42 are provided on the other surface of the connecting member 3-1. It is fixed. Two upper heat exchange members 30 constituting the first heating unit 51-1 and the second heating unit 51-2 are fixed to the two press shafts 42, respectively.

  Further, the shaft 2-2 of the servo motor 1-2 is fixed to one surface of a connecting material 3-2 that is a plate material, and a press shaft 42 is fixed to the other surface of the connecting material 3-2. Yes. The upper heat exchange members 30 constituting the pressurizing unit 52 are fixed to the press shafts 42, respectively.

  Further, the shaft 2-3 of the servo motor 1-3 is fixed to one surface of a connecting material 3-3 that is a plate material, and two press shafts 42 are fixed to the other surface of the connecting material 3-3. Has been. Two upper heat exchange members 30 constituting the first cooling part 53-1 and the second cooling part 53-2 are fixed to the two press shafts 42, respectively.

  Further, between the connecting members 3-1, 3-2 and 3-3 and the upper plate of the molding chamber 25, shrinkable bellows (bellows member) 4 covering the press shaft 42 are respectively connected. The contraction bellows 4 includes the first heating unit 51-1, the second heating unit 51-2, the pressurizing unit 52, and the first force generated by the servo motors 1-1, 1-2, and 1-3, respectively. Intrusion of outside air into the molding chamber 25 and the molding chamber 25 due to a gap between the press shaft 42 transmitted to the cooling unit 53-1 and the second cooling unit 53-2 and a hole through which the press shaft 42 passes into the molding chamber 25. This is to improve the air tightness in the molding chamber 25 by preventing the nitrogen gas from leaking outside. By providing this contraction bellows 4, oxidation of the mold 12 and the molding apparatus 100 is prevented. Furthermore, since the temperature drop in the molding chamber 25 is suppressed by improving the airtightness in the molding chamber 25, the energy consumption by the heater 33 is reduced. As a result, mass production is reduced by high-precision pressure molding of optical elements. Contribute.

  In addition, nitrogen pipes 5 are respectively led to the inlet chamber 21 and the outlet chamber 22 so that each chamber can be filled with a nitrogen atmosphere. Further, the inlet chamber 21 can be in a vacuum atmosphere by operating the vacuum pump 9. Further, the inlet chamber 21 and the outlet chamber 22 are respectively provided with an inlet chamber shutter 7 and an outlet chamber shutter 8 that are shielded from the outside air, thereby improving the airtightness in the molding chamber 25.

The optical element is manufactured by pressure molding of the molding material 11 using the molding apparatus 100 in the following procedure.
As an initial state, the inlet chamber shutter 7, the outlet chamber shutter 8, the molding chamber inlet shutter 23, and the molding chamber outlet shutter 24 are all closed downward.

First, the inlet chamber shutter 7 is opened upward, and the molding die 12 sandwiching the molding material 11 is placed in the inlet chamber 21 from the outside of the molding apparatus 100.
Here, first, the vacuum valve 10 is opened. Then, the air in the inlet chamber 21 is extracted by the action of the vacuum pump 9 to form a vacuum atmosphere. Thereafter, the vacuum valve 10 is closed and the nitrogen inflow valve 6 is opened this time. Then, nitrogen gas is sent from the nitrogen pipe 5 and the inside of the inlet chamber 21 becomes a nitrogen atmosphere. Thereafter, the molding chamber entrance shutter 23 opens upward, the mold moving tool 13 draws the molding die 12 from the inlet chamber 21 into the molding chamber 25, and the molding die 12 is disposed at the position of the first heating unit 51-1. To do. Then, the molding chamber entrance shutter 23 closes downward.

  As described above, the molding chamber 12 is moved to the molding chamber 25 after filling the inlet chamber 21 with nitrogen gas, which is an inert gas to the molding die 12 and the molding apparatus 100, thereby forming the molding chamber. Intrusion of outside air from the inlet chamber 21 side into the inside 25 is satisfactorily prevented, so that the molding die 12 and the molding apparatus 100 are prevented from being oxidized.

  Here, the servo motor 1-1 is operated to lower the upper heat exchange member 30 constituting the first heating unit 51-1 so as to come into contact with the molding die 12, and the molding die 12 is predetermined at a predetermined temperature from above and below. Heat for hours. When this first heating step is completed, the servo motor 1-1 operates to raise the upper heat exchange member 30 constituting the first heating unit 51-1, and then the mold moving tool 13 operates to form the mold. 12 is moved to the position of the second heating unit 51-2 and disposed. Here, the servo motor 1-1 operates again to lower the upper heat exchanging member 30 constituting the second heating unit 51-2 and bring it into contact with the mold 12, and the mold 12 is moved from above and below at a predetermined temperature. Heat for a predetermined time. When this second heating step is completed, the servo motor 1-2 operates to raise the upper heat exchange member 30 constituting the second heating unit 51-2, and then the mold moving tool 13 operates to form the mold. 12 is moved to the position of the pressure unit 52 and arranged.

  Next, the servo motor 1-2 is operated to lower the upper heat exchange member 30 constituting the pressurizing unit 52 to press the molding die 12, and while heating the molding die 12 at a predetermined temperature from above and below, Pressurize for a period of time. When the molding of the molding material 11 into the predetermined shape is completed by this pressurization step, the servo motor 1-2 operates to raise the upper heat exchange member 30 constituting the pressurizing unit 52, and then the mold moving tool 13. Operates to move the mold 12 to the position of the first cooling unit 53-1 and arrange it.

  Next, the servo motor 1-3 is operated to lower the upper heat exchange member 30 constituting the first cooling unit 53-1 to come into contact with the mold 12, so that the mold 12 is predetermined at a predetermined temperature from above and below. Cool for hours. When this first cooling step is completed, the servo motor 1-3 operates to raise the upper heat exchange member 30 constituting the first cooling section 53-1, and then the mold moving tool 13 operates to form the mold. 12 is moved to the position of the second cooling section 53-2 and arranged. Next, the servo motor 1-3 is operated again to lower the upper heat exchange member 30 constituting the second cooling unit 53-2, and the mold 12 is cooled from the upper and lower sides at a predetermined temperature for a predetermined time. When this second cooling step is completed, the servo motor 1-3 operates to raise the upper heat exchanging member 30 constituting the second cooling unit 53-2.

  Then, the molding chamber outlet shutter 24 opens upward, and the mold moving tool 13 pushes the molding die 12 out of the molding chamber 25 and arranges it in the outlet chamber 22. At this time, nitrogen gas is previously fed from the nitrogen pipe 5 into the outlet chamber 22, and a nitrogen atmosphere is maintained. Thereafter, the molding chamber outlet shutter 24 closes downward.

  Thereafter, the outlet chamber shutter 8 opens upward, and the molding die 12 is taken out from the molding apparatus 100. Thereafter, the outlet chamber shutter 8 is closed downward, and the outlet chamber 22 is filled with nitrogen gas from the nitrogen pipe 5. By doing so, it is possible to prevent the outside air from entering the molding chamber 25 from the outlet chamber 22 side well, so that the molding die 12 and the molding apparatus 100 are prevented from being oxidized.

Finally, the optical element molded from the inside of the mold 12 is taken out, and the manufacture of the optical element is completed.
In the above description, the process in which the optical element is manufactured by paying attention to one mold 12 has been described. However, the mold moving tool 13 sequentially transfers the plurality of molds 12 at regular time intervals. Optical elements are mass-produced by sequentially inserting the molding die 12 with the molding material 11 sandwiched between them into the molding apparatus 100.

  As described above, in the molding apparatus 100, one servo motor 1-1 having a smaller number (number of stages) than the two heating units (the first heating unit 51-1 and the second heating unit 51-2). These heating units are moved by a single servo motor 1-3 having a smaller number than the two cooling units (first cooling unit 53-1 and second cooling unit 53-2). The cooling part is moved. As described above, since the heating unit / cooling unit is moved by a smaller number of prime movers than the number of heating units / cooling units, the cost of the molding apparatus 100 is reduced. Mass production by pressure molding can be performed at low cost.

  In the molding apparatus 100 shown in FIG. 1, the number of prime movers (servo motors 1-1) less than the number of heating units is used to move these heating units, and the number of prime movers less than the number of cooling units. Although these cooling units are moved by (servo motor 1-3), only one of them may be moved by a small number of prime movers.

  Further, in the molding apparatus 100 shown in FIG. 1, the pressurizing unit 52 has one stage, but the pressurizing unit 52 may have a plurality of stages. In this case, in consideration of molding accuracy, the pressurizing unit 52 may pressurize the molding die 12 using the same number of prime movers. On the other hand, if there is a margin in molding accuracy, the pressurizing unit 52 may be pressurized with a small number of prime movers.

  In addition, the present invention is not limited to the above-described embodiments, and various improvements and changes can be made without departing from the scope of the present invention.

It is a figure which shows the structure of the optical element shaping | molding apparatus which implements this invention. It is a figure which shows an example of the conventional optical element shaping | molding apparatus. It is a figure which shows the detail of the structure of a shaping | molding die. It is a figure which shows the detail of the structure of a type | mold moving tool.

Explanation of symbols

1-1, 1-2, 1-3 Servo motor 2-1, 2-2, 2-3 shaft 3-1, 3-2, 3-3 connecting material 4 contraction bellows 5 nitrogen pipe 6 nitrogen inflow valve 7 inlet Chamber shutter 8 Exit chamber shutter 9 Vacuum pump 10 Vacuum valve 11 Molding material 12 Mold 12a Upper mold 12b Lower mold 12c Body mold 13 Mold moving tool 14 Exercise device 15 Vertical movement cylinder 16 Horizontal movement cylinder 21 Inlet chamber 22 Outlet chamber 23 Molding Chamber entrance shutter 24 Molding chamber exit shutter 25 Molding chamber 26 Nitrogen pipe 30 Heat exchange member 31 Abutting plate 32 Heat insulating material 33 Heater 34 Thermocouple 41-1, 41-2, 41-3, 41-4, 41-5 Servo Motor 42 Press shaft 51-1 First heating unit 51-2 Second heating unit 52 Pressurizing unit 53-1 First cooling unit 53-2 Second cooling unit 100 200 optical element molding device

Claims (5)

A plurality of heating means for heating the mold by contacting the mold;
A first prime mover that moves the heating means to contact the mold;
Pressurizing means for pressurizing the mold after being heated to mold the molding material in the mold; and
Cooling means for cooling the mold after pressurization by contacting the mold;
A second prime mover that moves the cooling means to contact the mold;
With
The optical element molding apparatus according to claim 1, wherein the first prime mover moves the heating means by a smaller number than the heating means. Heating means for heating the mold by contacting the mold;
A first prime mover that moves the heating means to contact the mold;
Pressurizing means for pressurizing the mold after being heated to mold the molding material in the mold; and
A plurality of cooling means for cooling the mold after pressurization by contacting the mold;
A second prime mover that moves the cooling means to contact the mold;
With
The second prime mover moves the cooling means by a smaller number than the cooling means. The heating, pressurization, and cooling are all performed in a molding chamber filled with an inert gas,
Further comprising a chamber disposed adjacent to the molding chamber and filled with the inert gas after the molding die has been introduced from the outside;
The mold is moved from the chamber after being filled with the inert gas to the molding chamber to perform the heating, pressurization, and cooling, respectively.
The optical element molding apparatus according to claim 1 or 2, The heating, pressurization, and cooling are all performed in a molding chamber filled with an inert gas,
The first and second prime movers are disposed outside the molding chamber,
A bellows member covering a shaft for transmitting the force generated by the first and second prime movers to the heating means and the cooling means, respectively;
The optical element molding apparatus according to claim 1. A method for manufacturing an optical element, wherein the optical element is manufactured by pressure molding of a molding material using the optical element molding apparatus according to any one of claims 1 to 4.