JP2018045015A - Transparent rib structure, composite optical prism, and method of forming optical prism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composite optical prism having a base material, a first prism vertex, a second prism vertex and a first valley.SOLUTION: The base material has high transmissivity with respect to a predetermined light source. The first prism vertex lies on the base material and has a first interface with the base material. The second prism vertex lies on the base material and has a second interface with the base material. The first valley lies on the base material and also lies between the first prism vertex and the second prism vertex.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a transparent rib structure, a composite optical prism, and a method of forming an optical prism. In particular, the present invention finally obtains a transparent rib structure that can be used in an integrated optical prism by finally constructing a base material and a plurality of prism vertices in an optical prism by a method of a stepwise polymerization step. The present invention relates to a method of forming a prism.

  A prism is a transparent optical element, is a transparent element constituted by two or more refractive planes, and generally refers to a columnar optical lens whose cross section has a specific geometric shape. Prism refracts light on a flat polished surface, and when the light is transmitted through the prism, the color is separated into colors in the spectrum by the dispersion action, so the light is reflected or different using the prism. Can be split into polarized light. The most common prism is a triangular prism, that is, a columnar lens having a triangular cross section, and has three prism vertices constituted by three rectangular surfaces. The prism has two basic functions, one is to refract light and the other is a dispersion effect.

  In the conventional prism production process, there is a problem that bubbles accumulate near the prism tip after the polymerization reaction. FIG. 9 shows a defect that bubbles exist at the prism tip in the conventional optical prism. As can be seen from FIG. 9, since the bubbles are accumulated at the tip of the prism, the optical quality of the entire optical prism is deteriorated.

  In view of this, the present invention discloses a transparent rib structure, a composite optical prism and a method of forming an optical prism. According to the method for forming an optical prism of the present invention, no gaps or bubbles remain in the obtained prism apex or chevron rib, and a stepwise polymerization step is performed between the substrate and the prism apex or chevron rib. There is no optical interface. That is, the transparent rib structure or the composite optical prism disclosed in the present invention can achieve both a simple manufacturing process and excellent optical quality. Therefore, the transparent rib structure or the composite optical prism of the present invention is naturally optical. It is worth making progress as a prism product.

  The first aspect of the present invention provides a transparent rib structure. The transparent rib structure of the present invention includes a base material, a first chevron rib, a second chevron rib, and a first valley. The base material has high transparency to a predetermined light source. The first chevron rib has a first apex angle and a first height and extends vertically from the substrate. The first chevron rib has different polymerization properties with respect to the substrate. The second chevron rib has a second apex angle and a second height and extends vertically from the substrate. The polymerization properties of the second chevron rib and the first chevron rib are the same. The transparent rib structure constitutes an integrated optical prism by the first valley located on the substrate and located between the first chevron rib and the second chevron rib.

  In one embodiment of the present invention, the transparent rib structure further includes a glass substrate, and the base material is sandwiched between the glass substrate and the first valley.

  In another embodiment of the invention, the polymeric material of the substrate, the first chevron rib and the second chevron rib is a homolog.

  In another embodiment of the invention, the substrate, the first chevron rib and the second chevron rib each have substantially the same refractive index.

  In another embodiment of the present invention, the polymerization property is a set selected from the degree of free polymerization, statistical average molecular weight, glass transition temperature and crystal melting temperature.

  In another embodiment of the invention, the first apex angle and the second apex angle have the same angle.

  In another embodiment of the invention, the first height and the second height are different.

  In another embodiment of the present invention, the transparent rib structure further comprises

  A third chevron rib extending perpendicularly from the substrate has a second valley located on the substrate and located between the third chevron rib and the second chevron rib.

  The second aspect of the present invention provides a composite optical prism. The composite optical prism of the present invention includes a base material, a first prism vertex, a second prism vertex, and a first valley. The substrate has high transparency to a predetermined light source. The first prism apex is located on the substrate and has a first apex angle and a first height. A first interface is provided between the first prism apex and the substrate. The second prism apex is located on the substrate and has a second apex angle and a second height. A second interface is provided between the second prism apex and the substrate. The first valley is located on the substrate and located between the first prism vertex and the second prism vertex.

  In one embodiment of the present invention, the composite optical prism further includes a glass substrate, and the base material is sandwiched between the glass substrate and the first valley.

  In another embodiment of the present invention, the first interface and the second interface are each a polymer material interface, and both sides of the polymer material interface have different polymer properties.

  In another embodiment of the present invention, the polymer property is a set selected from the degree of free polymerization, statistical average molecular weight, glass transition temperature and crystal melting temperature.

  In another embodiment of the present invention, the substrate, the first prism vertex and the second prism vertex each have substantially the same refractive index, and the first interface and the second interface are both interfaces having different optical properties. Absent.

  In another embodiment of the invention, the first apex angle and the second apex angle have the same angle.

  In another embodiment of the invention, the first height and the second height are different.

  In another embodiment of the present invention, the composite optical prism further comprises:

  A third prism vertex is located on the substrate, the second valley is located on the substrate, and is located between the third prism vertex and the second prism vertex.

  The third aspect of the present invention provides a method of forming an optical prism. First, a template having a first columnar groove and a second columnar groove is provided. Next, the first columnar groove and the second columnar groove are filled with the first polymerizable material, respectively, and the first columnar groove and the second columnar groove are not connected by the first polymerizable material. Then, a prepolymerization step is performed to convert the first polymerizable material in the first columnar groove and the second columnar groove into a prepolymerized material. Subsequently, the second polymerizable material is applied again so that the second polymerizable material contacts the prepolymerized material in the first columnar groove and the second columnar groove simultaneously. Thereafter, the second polymerizable material is covered with a glass substrate. A final polymerization step is then performed to polymerize the prepolymerized material and the second polymerizable material together to form a first final polymerized material and a second final polymerized material, respectively, ie, an optical prism. The prepolymerized materials located in the first columnar groove and the second columnar groove form a first interface and a second interface, respectively, after being polymerized together with the second polymerizable material.

  In one embodiment of the present invention, the first final polymerized material and the second final polymerized material have different polymer properties, which are determined from the degree of free polymerization, statistical average molecular weight, glass transition temperature and crystal melting temperature. It is a pair to be chosen.

  In another embodiment of the invention, the prepolymerized material and the polymerizable material both have substantially the same refractive index after polymerization together, the first interface and the second interface are interfaces of the polymeric material, and non-optical It is not an interface with a difference in properties.

  In another embodiment of the present invention, the first columnar groove has a first base angle, the second columnar groove has a second base angle, and the first base angle and the second base angle have the same angle. .

  In another embodiment of the present invention, the depth of the first columnar groove and the depth of the second columnar groove are different.

  In another embodiment of the invention, the method of forming an optical prism further comprises:

  The template has a third columnar groove, and after the final polymerization step, the third final polymerization material located in the third columnar groove and the second final polymerization material together form a third interface.

It is the schematic which shows the template of this invention. 1b is a side view of FIG. It is the schematic which shows the template of this invention. 2b is a side view of FIG. 2a. FIG. It is the schematic which shows the template of this invention. FIG. 3b is a side view of FIG. 3a. It is the schematic which shows the template of this invention. 4b is a side view of FIG. 4a. FIG. It is the schematic which shows the template of this invention. FIG. 5b is a side view of FIG. 5a. It is the schematic which shows the template of this invention. FIG. 6b is a side view of FIG. 6a. It is the schematic of the compound optical prism of this invention. It is an upper surface photograph of one prism vertex in the compound optical prism of the present invention. It is a figure which shows the malfunction which has a bubble at the prism front-end | tip in the optical prism of a prior art.

  First, the present invention provides a method of forming an optical prism. The optical prism formed by this method may be a transparent rib structure for an integrated optical prism.

  1a to 6b are diagrams illustrating an exemplary process of the method of the present invention. Referring to FIG. 1 a, first, an optical prism is manufactured using a template 105. The template 105 to be used has an integral plane 106 and a plurality of columnar grooves positioned on the plane, for example, a first columnar groove 110 and a second columnar groove 120. The first columnar groove 110 and the second columnar groove 120 extend parallel to each other on the plane 106. FIG. 1a is a schematic view showing a template 105 of the present invention. The shape of the template 105 is circular, elliptical or rectangular, and the material used for the template 105 may be a plastic material. The width of the columnar grooves may be the same or different. For example, the width of the columnar grooves may be between 0.03 cm and 1.00 cm.

  FIG. 1b is a side view of FIG. 1a. Referring to FIGS. 1 a and 1 b, it is preferable to arrange more columnar grooves, for example, the third columnar groove 130, the fourth columnar groove 140, or more columnar grooves on the same plane 106 of the template 105. Four such as the first columnar groove 110, the second columnar groove 120, the third columnar groove 130, and the fourth columnar groove 140 shown in the drawings of the present invention are non-limiting examples. The third columnar groove 130 and the fourth columnar groove 140 extend in parallel with each other, like the first columnar groove 110 and the second columnar groove 120.

  Each columnar groove has a respective apex angle and depth. For example, the first columnar groove 110 has a first apex angle 111 and a first depth 112, the second columnar groove 120 has a second apex angle 121 and a second depth 122, and the third columnar groove 130 is The fourth apex groove 141 has a third apex angle 131 and a third depth 132, and the fourth columnar groove 140 has a fourth apex angle 141 and a fourth depth 142. The vertical angle and depth of different columnar grooves may be the same or different depending on the standard requirements of the optical prism. For example, the angular range of the apex angle of the columnar groove is between 20 degrees and 70 degrees, the depth is between 0.1 cm and 1.0 cm, and the ratio of depth to width is 1: 1 to 1: 3. It may be in between. In FIG. 1b, the first columnar groove 110, the second columnar groove 120, the third columnar groove 130, and the fourth columnar groove 140 have the same apex angle, and the depths of the first columnar groove 110 and the second columnar groove 120 are the same. Similarly, the depth of the third columnar groove 130 and the fourth columnar groove 140 is 400 μm.

In other words, since the first columnar groove 110 and the second columnar groove 120 are located in the first optical region, they have the same optical parameters, and the third columnar groove 130 and the fourth columnar groove 140 are adjacent to the first optical region. It may be seen that it has different optical parameters because it is located in two optical regions. Since the flat surface 106 of the template 105 can include a plurality of sets of optical regions having different optical parameters at the same time, the distance D between different columnar grooves may be the same or different. The distance D between different columnar grooves may be between 2 cm and 15 cm. For example, if necessary, the distance D ₁ between the first columnar groove 110 and the second columnar groove 120, the distance D ₂ between the second columnar groove 120 and the third columnar groove 130, the third columnar groove 130 and the fourth columnar groove. can be adjusted such that the distance D ₃ between the grooves 140 in the same or different distances. In FIG. 1b, D ₁ <D ₂ <D ₃ .

  Next, referring to FIG. 2a, each columnar groove is filled with each independently polymerizable material 150 and, for example, a first columnar groove 110, a second columnar shape using a resin injector (not shown). The polymerizable material 150 is poured into the groove 120, the third columnar groove 130, and the fourth columnar groove 140 independently. In order to fully fill each columnar groove with the polymerizable material 150 independently, the polymerizable material 150 is simply filled in each columnar groove, and the columnar grooves are connected or communicated. It is preferable not to. FIG. 2b is a side view of FIG. 2a. Each columnar groove may be filled with a polymerizable material 150 until at least flat, and preferably, the polymerizable material 150 may be fully filled so that each columnar groove is convex. As shown in FIG. 2b, the first columnar groove 110 and the second columnar groove 120 are flatly filled with a polymerizable material 150, and the third columnar groove 130 and the fourth columnar groove 140 are filled with a polymerizable material 150. Fully filled. It should be noted that the polymerizable material 150 overflows from each columnar groove and the columnar groove is not communicated by the polymerizable material 150.

  The polymerizable material 150 is an organic material and is a liquid capable of performing a polymerization reaction. Possible polymerization reactions may be anionic polymerization reactions, cationic polymerization reactions, free radical polymerization reactions or condensation polymerization reactions. The polymerizable material 150 is preferably a liquid, so that the polymerizable material 150 is simply and completely filled into the columnar grooves, leaving no gaps. Furthermore, the polymerizable material 150 is more preferable as the volume reduction rate after complete polymerization is smaller. The polymerizable material 150 is an optical plastic material and can include a suitable polymerization initiator, such as Darocur. The viscosity of the polymerizable material 150 may be between 10 cp and 20000 cp.

  Next, referring to FIG. 3a, a pre-polymerization step is performed so that the polymerizable material 150 filled in the first columnar groove 110, the second columnar groove 120, the third columnar groove 130, and the fourth columnar groove 140 is not discharged. After a complete polymerization reaction, it becomes a prepolymerized material. The prepolymerization step performed here is always an incomplete polymerization reaction, and in order to incompletely polymerize the polymerizable material 150 to obtain the prepolymerized material 159, the prepolymerized material 159 is composed of relatively few repeating units. It is preferably a polymer that is constructed, i.e. an oligomer. The incompletely polymerized prepolymerized material 159 is preferably not a solid but a high viscosity liquid whose viscosity is higher than that of the original polymerizable material 150. FIG. 3b is a side view of FIG. 3a.

  Based on the chemistry of the polymerizable material 150, it is preferable to determine how to proceed with the incomplete polymerization reaction of the prepolymerization step. For example, the incomplete polymerization reaction of the preliminary polymerization step may be performed by heat or light. For example, when heat is applied to the polymerizable material 150 to perform an incomplete polymerization reaction in the prepolymerization step, the temperature of the polymerizable material 150 may be increased to 150 ° C. over about 3 to 30 minutes. . In addition, when light is used for the polymerizable material 150 to perform an incomplete polymerization reaction in the prepolymerization step, the polymerizable material 150 is irradiated with ultraviolet rays having an energy density of about 1 Joule / square centimeter to 6 Joule / square centimeter, 365 nanometer. You may leave for about 2 to 10 minutes. In addition, the end point of the prepolymerization step may be determined using a method of increasing illuminance, energy, or soaking time, for example, by a time method or an absorption method. For example, the reaction end point is confirmed by the fact that the product state no longer changes.

  Subsequently, referring to FIG. 4a, a polymerizable material 160 is injected again using a resin injector (not shown), pressed together, applied onto the flat surface 106 of the template 105, and second polymerizable. The material 160 is in contact with the prepolymerized material 159 in all columnar grooves at the same time. The thickness of the second polymerizable material 160 after being applied flat may be between 60 μm and 400 μm. FIG. 4b is a side view of FIG. 4a. Like the polymerizable material 150, the polymerizable material 160 is a liquid capable of performing a polymerization reaction. The polymerizable material 150 and the polymerizable material 160 may be the same liquid capable of performing a polymerization reaction. Further, if necessary, the polymerizable material 150 and the polymerizable material 160 may be different liquids that can react under the same polymerization conditions. For the polymerizable material 160, the description of the polymerizable material 150 can be referred to.

  Subsequently, referring to FIG. 5a, the liquid second polymerizable material 160 that has not yet been polymerized may be covered with a glass substrate 170 that is used as required. The glass substrate 170 is optical glass or industrial glass, and may have a thickness between 200 μm and 1300 μm. FIG. 5b is a side view of FIG. 5a. When the glass substrate 170 is not used, the next step is continued.

  Next, referring to FIG. 6a, after the incomplete polymerization reaction, another polymerization reaction is performed, which is referred to as a final polymerization step. The difference from the incomplete polymerization reaction shown in the preliminary polymerization step is that the complete polymerization reaction process is always performed in the final polymerization step. After the final polymerization step, the prepolymerized material 159 and the second polymerizable material 160 are polymerized together, the prepolymerized material 159 becomes the first final polymerized material 151, and the second polymerizable material 160 becomes the second final polymerized material. The material 161 becomes the third final polymerized material 151 in the third columnar groove 130. Here, the first final polymerized material 151, the second final polymerized material 161, and the glass substrate 170 used as needed together constitute a transparent rib structure for an optical prism, and the composite optical prism 100 provided by the present invention is provided. can get. The first final polymerized material 151, the second final polymerized material 161, and the glass substrate 170 used as necessary have high transparency with respect to a predetermined light source.

  6b is a side view of FIG. 6a. In one aspect of the present invention, the first interface 113 and the second interface 123 are formed after the prepolymerized material 159 and the second polymerizable material 160 located in each columnar groove are polymerized together, respectively. In one feature of the present invention, the first interface 113 and the second interface 123 are interfaces of material properties, not interfaces having a difference in optical properties. In other words, the first final polymer material 151 and the second final polymer material 161 have substantially the same refractive index, that is, the difference in refractive index between the first final polymer material 151 and the second final polymer material 161 is ignored. Or small enough not to be observed. Preferably, the first final polymerized material 151 and the second final polymerized material 161 have the same refractive index, and there is a difference in optical properties such as a refractive index or a reflective surface between the first interface 113 and the second interface 123. Without regard to the difference in material properties. Similarly, the first final polymer material 151 and the second final polymer material 161 located in the third columnar groove 130 together form a third interface 133 after undergoing a final polymerization step. Further, the first final polymer material 151 and the second final polymer material 161 located in the fourth columnar groove 140 together form a fourth interface 143 after undergoing a final polymerization step.

  That is, the prepolymerized material 159 and the second polymerizable material 160 located in each columnar groove form the first interface 113, the second interface 123, the third interface 133, and the fourth interface 143 after polymerization, It is an interface that separates polymer materials having different polymer properties. Prior to the final polymerization step, each of the prepolymerized material 159 and the second polymerizable material 160 was completely polymerized because the initial states, such as viscosity, degree of polymerization, chemical properties, or backbone length, may differ. Thereafter, the first final polymer material 151 and the second final polymer material 161 have different polymer properties. In one embodiment of the present invention, the polymer properties divided into the first interface 113, the second interface 123, the third interface 133, and the fourth interface 143 include the degree of polymerization, the statistical average molecular weight, the degree of dispersion, and the glass transition temperature. And at least one of the crystal melting temperatures.

  A polymer is also called a polymer, and is generally a mixture of a group of homologues having different molecular weights or different structural forms (a homologue in homologous series). “degree of polymerization” means the average degree of polymerization of the homologue in the polymer, and can be expressed as a statistical average value. The statistical average molecular weight of homologues is called statistical average molecular weight. At present, various methods for calculating the statistical average molecular weight of a polymer are known. For example, there are an end group analysis method, a boiling point increase method, a freezing point depression method, a vapor pressure drop method, an osmotic pressure method, a light scattering method, a viscosity method, an ultrafast centrifugal precipitation method, a diffusion method, an electron microscope method and a gel permeation chromatography. The obtained statistical average molecular weight may be a number average molecular weight (Mn), a weight average molecular weight (Mw), a viscosity average molecular weight (Mη), or a Z-average molecular weight (Mz). If necessary, a peak molecular weight (Mp) of non-average molecular weight is also applied. Different statistical molecular weights have their advantages and molecular weight ranges to apply, and the statistical average values of molecular weights obtained by different methods differ. The polymer properties, the statistical average molecular weight of the polymer, and the calculation method thereof are background knowledge that those skilled in the art have in performing the preliminary polymerization step and the final polymerization step of the present invention. Helps determine when to do so.

  As shown in FIG. 7, when the first final polymer material 151, the second final polymer material 161 and the glass substrate 170 used as necessary are removed from the template, the composite optical prism 100 provided by the present invention is obtained. In other words, it is a transparent rib structure for an optical prism, and is used as necessary. Substrate 170 (matrix), base material 160 (substrate), first prism apex (also referred to as first chevron rib) 115, second prism apex ( 125 and the first valley 181). The base material 171 used as necessary has high transparency to a predetermined light source. The substrate 170 used as needed is a monolithic structure and can be a glass substrate defining different optical regions, and the substrate 160 is sandwiched between the substrate 170 and the first valley 181.

  The first prism vertex 115, that is, the first chevron rib, has a first apex angle 111 and a first height 112. The first apex angle 111 and the first height 112 of the first prism vertex 115 determine the optical properties of the first prism vertex 115. For example, the angle range of the first apex angle 111 is between 20 degrees and 50 degrees, the first height 112 is between 0.1 μm and 1.0 μm, and the depth to width ratio is 1: 1 to 1. : May be between 3. The first prism vertex 115 is located on the substrate 160 and extends upward from the substrate 160, for example, vertically extends upward. Each of the first prism vertex 115 and the base material 160 is a kind of polymer, and has different polymerization properties, and therefore has a first interface 113 between the first prism vertex 115 and the base material 16.

  The second prism vertex 125, that is, the second chevron rib, has a second apex angle 121 and a second height 122. The second apex angle 121 and the second height 122 of the second prism vertex 125 determine the optical properties of the second prism vertex 125, and both the first prism vertex 115 and the second prism vertex 125 shown in FIG. It is located in one optical region 101. For example, the angle range of the second apex angle 121 is between 20 degrees and 50 degrees, the second height 122 is between 0.1 μm and 1.0 μm, and the ratio of depth to width is 1: 1 to 1. : May be between 3. The second prism vertex 125 is located on the substrate 160 and extends upward from the substrate 160, for example, vertically extends upward.

  Since the first prism vertex 115 and the second prism vertex 125 are the same polymer, their polymerization properties are the same. Since the second prism vertex 125 and the base material 160 are each a kind of polymer and have different polymerization properties, the second prism 123 and the base material 160 have a second interface 123 between them.

  If necessary, a third prism vertex 135 and a fourth prism vertex 145 may be further provided on the substrate 160. Similarly, the third prism apex 135, that is, the third chevron rib, has a third apex angle 131 and a third height 132, and the fourth prism apex 145 has a fourth apex angle 141 and a fourth height 142. The third prism vertex 135 and the base material 160 are each a kind of high molecular weight polymer and have different polymerization properties, and therefore have a third interface 133 between the third prism vertex 135 and the base material 160. The fourth prism vertex 145 and the base material 160 are each a kind of polymer, and have different polymerization properties. Therefore, a fourth interface 143 is provided between the fourth prism vertex 145 and the base material 160. As FIG. 7 shows, both the third prism vertex 135 and the fourth prism vertex 145 are located in the second optical region 102 different from the first optical region 101 of the first prism vertex 115 and the second prism vertex 125. Even if the angle is the same, the height is different.

  The base 160 and each prism vertex have substantially the same refractive index, that is, the difference in refractive index between the first final polymer material 151 of each prism vertex and the second final polymer material 161 of the base material 160 is ignored. Or small enough not to be observed. Preferably, the first final polymerized material 151 and the second final polymerized material 161 have the same refractive index, so that the first interface 113, the second interface 123, the third interface 133, and the fourth interface 143 are refracted, for example. There is no difference in optical properties such as rate or reflective surface, which is considered as a difference in material properties, and each interface is considered as an interface of material properties rather than an interface with a difference in optical properties.

  The base material 160, the polymer material of the first prism vertex 115 and the second prism vertex 125 are the same, but the first interface 113, the second interface 123, the third interface 133 and the fourth interface 143 are different polymer properties. Are separated. That is, both sides of the interface of the polymer material have different polymer properties. In one embodiment of the present invention, the polymer properties separated between the first interface 113, the second interface 123, the third interface 133, and the fourth interface 143 are polymerisation degree, statistical average molecular weight, dispersity, glass At least one of the transition temperature and the crystal melting temperature may be used. Refer to the contents of the preamble for details of the polymer properties.

A trapezoidal first valley 181 is further provided between the first prism vertex 115 and the second prism vertex 125 on the substrate. The dimensions of the first trough 181 are those determined by the top angle and spacing D ₁ of the prism vertex, which is one of the optical properties of the integrated type optical prism of the present invention. Similarly, a trapezoidal second valley 182 is provided between the second prism vertex 125 and the third prism vertex 135. A trapezoidal third valley 183 is provided between the third prism vertex 135 and the fourth prism vertex 145. The second valley 182 is located on the boundary between the first optical region 101 and the second optical region 102 and does not belong to either the first optical region 101 or the second optical region 102. In the compound optical prism 100, it is necessary to find the optimal dimensions for the optical prism by repeating the experiment for the interval, apex angle, and height of the prism apexes.

FIG. 8 is a top view photograph of a vertex of a prism in the composite optical prism 100 of the present invention. As can be seen from FIG. 8, the composite optical prism produced by the method of the present invention has excellent optical properties at the prism apex and does not contain bubbles. Accordingly, the transparent rib structure or the composite optical prism provided by the present invention naturally has an advanced value as an optical prism product.
The above are only preferred embodiments of the present invention, and equivalent changes and modifications made in the scope of the claims of the present invention also belong to the scope of the present invention.

100 Compound Optical Prism / Transparent Rib Structure 101 First Optical Region 102 Second Optical Region 105 Template 106 Plane 110 First Columnar Groove 111 First Apex Angle 112 First Depth / Height 113 First Interface 115 First Prism Vertex / First angle rib 120 second columnar groove 121 second apex angle 122 second depth / height 123 second interface 125 second prism apex / second angle rib 130 third columnar groove 131 third apex angle 132 third Depth / height 133 third interface 135 third prism apex / third chevron rib 140 fourth columnar groove 141 fourth apex angle 142 fourth depth / height 143 fourth interface 145 fourth prism apex 150 polymerizable Material 151 First final polymerized material / third final polymerized material 159 Prepolymerized material 160 Polymerizable material 161 Second final polymerized material 170 Substrate 181 First valley 182 Second valley 183 Third valley D ₁ distance D ₂ distance D ₃ distance

Claims (22)

A transparent rib structure,
A substrate having high transparency to a light source;
A first chevron rib having a first apex angle and a first height, extending perpendicularly from the substrate and having different polymerization properties with respect to the substrate;
A second chevron rib having a second apex angle and a second height, extending perpendicularly from the substrate and having the same polymerization properties as the first chevron rib;
A transparent rib structure including a first trough located on the base material and located between the first chevron rib and the second chevron rib and having the transparent rib structure as an integrated optical prism.   The transparent rib structure according to claim 1, further comprising a glass substrate, wherein the base material is sandwiched between the glass substrate and the first valley.   The transparent rib structure according to claim 1, wherein the polymer material of the base material, the first chevron rib and the second chevron rib is a homologue.   The transparent rib structure according to claim 1, wherein the base material, the first chevron rib, and the second chevron rib each have substantially the same refractive index.   The transparent rib structure according to claim 1, wherein the polymerization property is a set selected from a degree of free polymerization, a statistical average molecular weight, a glass transition temperature, and a crystal melting temperature.   The transparent rib structure according to claim 1, wherein the first apex angle and the second apex angle have the same angle.   The transparent rib structure according to claim 1, wherein the first height and the second height are different. The transparent rib structure further includes:
Having third chevron ribs extending vertically from the substrate;
The transparent rib structure according to claim 1, wherein a second valley is located on the substrate and located between the third chevron rib and the second chevron rib. A compound optical prism,
A substrate having high transparency to a light source;
A first prism apex located on the substrate and having a first apex angle and a first height;
A second prism apex located on the substrate and having a second apex angle and a second height;
A first valley located on the substrate and located between the first prism vertex and the second prism vertex;
A composite optical prism having a first interface between the first prism apex and the substrate and a second interface between the second prism apex and the substrate.   The composite optical prism according to claim 9, further comprising a glass substrate, wherein the base material is sandwiched between the glass substrate and the first valley.   10. The composite optical prism according to claim 9, wherein the first interface and the second interface are each an interface of a polymer material, and each of the both sides of the interface of the polymer material has different kinds of polymer properties.   The composite optical prism according to claim 11, wherein the polymer property is a set selected from a degree of free polymerization, a statistical average molecular weight, a glass transition temperature, and a crystal melting temperature.   The base material, the first prism vertex, and the second prism vertex have substantially the same refractive index, respectively, and the first interface and the second interface are not interfaces having a difference in optical properties. 9. The composite optical prism according to 9.   The composite optical prism according to claim 9, wherein the first apex angle and the second apex angle have the same angle.   The composite optical prism according to claim 9, wherein the first height and the second height are different. The composite optical prism further includes:
Having a third prism apex located on the substrate;
The composite optical prism according to claim 9, wherein a second valley is located on the base material and located between the third prism vertex and the second prism vertex. A method of forming an optical prism,
Providing a template having a first columnar groove and a second columnar groove;
Fill the first columnar groove and the second columnar groove with a first polymerizable material, respectively, and prevent the first columnar groove and the second columnar groove from being connected by the first polymerizable material. Steps,
A prepolymerization step in which the first polymerizable material in the first columnar groove and the second columnar groove is a prepolymerized material;
Applying a second polymerizable material so that the second polymerizable material is in simultaneous contact with the prepolymerized material located in the first columnar groove and in the second columnar groove;
Covering the second polymerizable material with a glass substrate after applying the second polymerizable material;
Including polymerizing the prepolymerized material and the second polymerizable material together to form a first final polymerized material and a second final polymerized material, respectively, i.e., a final polymerization step to obtain an optical prism;
The prepolymerized material located in the first columnar groove and the second columnar groove is polymerized together with the second polymerizable material to form an optical prism that forms a first interface and a second interface, respectively. how to. The first final polymerized material and the second final polymerized material have different polymer properties,
The method for forming an optical prism according to claim 17, wherein the polymer property is a set selected from a degree of free polymerization, a statistical average molecular weight, a glass transition temperature, and a crystal melting temperature.   After the prepolymerized material and the second polymerizable material are polymerized together, each has substantially the same refractive index, the first interface and the second interface are interfaces of polymer materials, and the difference in optical properties The method of forming an optical prism according to claim 17, wherein is not an interface.   The first columnar groove has a first base angle, the second columnar groove has a second base angle, and the first base angle and the second base angle have the same angle. A method of forming the described optical prism.   The method for forming an optical prism according to claim 17, wherein a depth of the first columnar groove is different from a depth of the second columnar groove. The method of forming the optical prism further includes:
The template has a third columnar groove, and after the final polymerization step, the third final polymerization material and the second final polymerization material located in the third columnar groove together form a third interface, A method of forming the optical prism of claim 17.

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