Optical member fabrication method, optical member, lens fabrication method, and lens
A technology of optical components and manufacturing methods, applied in the direction of optical components, optical components, optics, etc.
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no. 1 approach 〉
[0058] figure 1 (a) to (d) are schematic external views of the optical component and the lens of the first embodiment. like figure 1 As shown in (a) and (b), the optical component OE is made of a single resin, and includes a plurality of lenses LS arranged two-dimensionally, and has a curved first optical surface OP1 and a flat second optical surface OP1. Surface OP2. Additionally, if figure 1 (c), (d) shown, the lens LS is the figure 1 The optical components OE of (a) and (b) are obtained by singulating (for example, dicing) for each lens so as to have a single optical surface when viewed from the optical axis direction. As the optical component OE, other than a lens array in which the lenses LS are arranged in an array (two-dimensionally), a structure in which the lenses LS are only arranged in a row (one-dimensionally) may be used. In addition, the lens LS may have a configuration in which a plurality of lenses are arranged in line as viewed from the optical axis direc...
no. 2 approach 〉
[0082] A second embodiment will be described. Image 6 It is the structure which formed the raised part SM1b of V-shaped cross-section between the transfer surface ST1a which adjoins in 1st silicone resin mold SM1. If this first silicone resin mold SM1 is used to transfer and form the lens array LA as described above, then as Figure 7 As shown, between the lenses LS transferred from the transfer surface SM1a, a plurality of valleys (V-shaped grooves) LV having a V-shaped cross section corresponding to the raised portion SM1b are formed. The angle of the valley portion LV is preferably 20° to 60°.
[0083] The lens array LA thus formed can be easily separated into lenses LS in the following form. exist Figure 8 In the example shown in (a), by stretching the sheet FM to both sides (or on a diagonal line) to generate tensile stress in the lens array LA, a fracture can be generated in the deepest part of the weakest valley LV.
[0084] exist Figure 8 In the example shown i...
no. 3 approach 〉
[0088] A third embodiment will be described. In this embodiment, the transfer surface SM2a which transfers the curved surface transfer surface of lens LS is formed also in 2nd silicone resin mold SM2. In this way, in the above embodiment of image 3 In the mold clamping step shown in (c), alignment of the first silicone resin mold SM1 and the second silicone resin mold SM2 in the mold clamping orthogonal direction is required in order to suppress the decentering of both optical surfaces of the lens.
[0089] Therefore, in the present embodiment, alignment marks SM1c and SM2c are respectively formed on the first silicone resin mold SM1 and the second silicone resin mold SM2. in the right figure 2 When the master mold shown in (a) is cut, at the same time, recesses or protrusions of a predetermined shape are formed at positions different from the transfer surface, and these are transferred to the first silicone resin mold SM1 and the second silicone resin mold SM2 respectivel...
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Abstract
Description
Claims
Application Information
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