TW202131026A - Complex prism module and imaging apparatus - Google Patents

Abstract

A complex prism module includes a first prism, a second prism, and an interface filling medium. The first prism includes a first light-incident surface, a first reflecting surface, and a first light-emitting surface those are connected to each other, and the first light-incident surface and the first light-emitting surface are connected to a first edge. and the first light-incident surface and the first light-emitting surface are connected to a first chamfered plane. The second prism includes a second light-incident surface, a second reflecting surface, and a second light-emitting surface those are connected to each other, and the second light-incident surface and the second light-emitting surface are connected to a second edge, and the second light-incident surface and the second light-emitting surface are connected to a second chamfered plane. The first chamfered plane and the second chamfered plane are attached to each other, such that the first light incident surface and the second light incident surface are connected to each other, and the first edge and the second edge are parallel to each other and far away from each other. The interface filling medium is filled between the first chamfered plane and the second chamfered plane.

Description

Composite image capture module and image capture module

The present invention relates to a dual frame structure, in particular to a composite frame module and an image capturing module using the composite frame module.

In situations where wide-angle photography is required, in order to avoid image distortion caused by the acquisition of a single large field of view, a dual-frame structure is used to capture images. After the small field of view images are obtained by two small fields, the images are stitched by back-end processing. Large field of view image.

In order to reduce the width of the double scallop structure, the corresponding corners between the two scallops will be cut to splice the two scallops to form a suture line between the two scallops. The aforementioned suture thread produces an interface with inconsistent refractive index of the medium when the light passes through, which causes the problem of flare in the imaging result caused by multiple refraction.

In view of the above-mentioned problems, the present invention proposes a composite beam module and an image capturing module using the composite beam module to avoid the generation of flares.

At least one embodiment of the present invention provides a composite beam module, which includes a first beam, a second beam, and an interface filling medium. The first beam has a first light-incident surface, a first reflective surface, and a first light-emitting surface that are connected to each other. The first light-incident surface and the first light-emitting surface are connected to a first side, and the first The light surface and the first reflective surface are connected to a first chamfered plane. The second beam has a second light-incident surface, a second reflective surface, and a second light-emitting surface that are connected to each other. The second light-incident surface and the second light-emitting surface are connected to a second side, and the second The light surface and the second reflective surface are connected to a second chamfered plane.

Wherein, the first chamfered plane and the second chamfered plane are attached to each other, so that the first light incident surface and the second light incident surface are connected to each other and are coplanar, and the first side and the second side are parallel to each other and far away from each other . The interface filling medium is supplemented between the first chamfered plane and the second chamfered plane.

In at least one embodiment of the present invention, the interface filling medium is optical glue.

In at least one embodiment of the present invention, the interface filling medium is an opaque ink.

In at least one embodiment of the present invention, the first reflective surface and the second reflective surface have reflective coatings.

In at least one embodiment of the present invention, there is a first included angle between the first light incident surface and the first reflective surface, and a second included angle exists between the second light incident surface and the first reflective surface. There is a third included angle between the second reflective surfaces, and the sum of the first, second, and third included angles is 180 degrees.

In at least one embodiment of the present invention, the composite frame module further includes a frame. The frame has a bottom surface, and a first oblique side surface and a second oblique side surface extending on two opposite sides of the bottom surface; wherein the first reflecting surface is used to be fixed to the first oblique side surface, and the second reflecting surface is used for To be fixed to the second oblique side surface.

In at least one embodiment of the present invention, the composite lens module further includes an optical glue. The optical glue adheres the first reflective surface to the first oblique side surface and the second reflective surface to the second oblique side surface.

In at least one embodiment of the present invention, the first oblique side surface and the second oblique side surface have reflective coatings.

In at least one embodiment of the present invention, the angle between the first reflecting surface and the second reflecting surface is equal to the angle between the first oblique side surface and the second oblique side surface.

In at least one embodiment of the present invention, the rigidity coefficient of the frame is greater than the rigidity coefficients of the first frame and the second frame.

In at least one embodiment of the present invention, the frame is a reflective frame made of glass, and the first frame and the second frame are plastic frames.

In at least one embodiment of the present invention, the composite lens module further includes a lens frame. The lens frame has a bottom plate and a vertical plate, the vertical plate extends vertically to the bottom plate; wherein the bottom surface of the frame is provided with a vertical plate so that the first oblique side and the second oblique side are perpendicular to the bottom plate, and the first and second oblique sides are perpendicular to the bottom plate. The hoop is placed on the bottom plate so that the first light incident surface and the second light incident surface are perpendicular to the bottom plate, and the first reflecting surface and the second reflecting surface are combined with the hoop frame.

At least one embodiment of the present invention also provides an image capturing module, which includes the aforementioned composite camera module and two image cameras. The two image cameras are directly or indirectly fixed to the first light-emitting surface and the second light-emitting surface, and capture images toward the first light-emitting surface and the second light-emitting surface, respectively.

At least one embodiment of the present invention also provides an image capturing module, which includes the aforementioned composite camera module and two image cameras. The two image cameras are fixed on the lens frame, and capture images toward the first light-emitting surface and the second light-emitting surface respectively.

In at least one embodiment of the present invention, the lens frame further includes two brackets, which extend from the bottom plate or the vertical plate, and respectively correspond to the first light incident surface and the second light incident surface; the two image cameras are respectively fixed to each bracket.

The present invention replaces the splicing of the two splices by the integrally formed double splice structure, thereby avoiding the problem of flare generated at the splicing position. At the same time, in at least one embodiment of the present invention, a frame made of a material with a higher rigidity is added, which can avoid the deformation of the double frame and maintain the flatness of the light incident surface; therefore, the double frame can be modified. It is made of low-cost optical plastic, which effectively reduces the production cost.

Please refer to FIG. 1, FIG. 2, FIG. 3, and FIG. 4, which are a composite beam module 100 disclosed in an embodiment of the present invention. The composite beam module 100 is used for capturing images with a large viewing angle to obtain two A splicing image can be used to form a large viewing angle image. The composite frame module 100 includes a first frame 110, a second frame 120, and an interface filling medium 160.

As shown in FIGS. 1, 2, 3, and 4, the first beam 110 has a first light-incident surface 111, a first reflective surface 112 and a first light-emitting surface 113 connected to each other. The first light-incident surface 111 and the first light-emitting surface 113 are connected to a first side 114. The first light incident surface 111 and the first reflective surface 112 are connected to a first chamfered plane 115. The second beam 120 has a second light-incident surface 121, a second reflective surface 122, and a second light-emitting surface 123 connected to each other. The second light-incident surface 121 and the second light-emitting surface 123 are connected to a second side 124 with each other. The second light incident surface 121 and the second reflective surface 122 are connected to a second chamfered plane 125.

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the first chamfered plane 115 and the second chamfered plane 125 are attached to each other, so that the first light incident surface 111 and the second light incident surface 121 are connected to each other and share a common In a plane, the first reflective surface 112 and the second reflective surface 122 are connected to each other through the first light incident surface 111 and the second light incident surface 121, and the first side 114 and the second side 124 are parallel to each other and far away from each other. In a specific embodiment, the first reflective surface 112 and the second reflective surface 122 are provided with reflective coatings to enhance the reflection effect of the first reflective surface 112 and the second reflective surface 122 and prevent light from penetrating. The interface filling medium 160 fills the gap between the first chamfered plane 115 and the second chamfered plane 125 to fill the gap between the first chamfered plane 115 and the second chamfered plane 125 that is not actually joined. That is, through the combination of the interface filling medium 160, the first ridge 110 and the second ridge 120 are combined into one body to form a composite ridge module 100 with a double ridge structure.

As shown in FIG. 5, in a specific embodiment, the interface filling medium 160 is an optical glue 170, and the refractive index of the cured optical glue 170 is close to that of the first 110 and the second 120. The first chamfered plane 115 and the second chamfered plane 125 are connected through the optical glue 170, which can eliminate the interface with inconsistent refractive index of the medium, and avoid the problem of flare caused by multiple refraction.

As shown in FIG. 6, in different embodiments, the interface filling medium 160 is an opaque ink, which blocks light penetrating the first chamfered plane 115 and the second chamfered plane 125, and can also eliminate flare. It should be noted that in FIGS. 5 and 6, the refraction phenomenon of light entering and exiting the first beam 110 and the second beam 120 is omitted, so that the interface filling medium 160 is clearly presented, and it does not mean that no refraction phenomenon occurs.

In addition, as shown in FIG. 4, there is a first included angle a1 between the first light incident surface 111 and the first reflective surface 112, and a second included angle a2 exists between the second light incident surface 121 and the first reflective surface 112. There is a third included angle a3 between the first reflective surface 112 and the second reflective surface 122, and the sum of the first, second, and third included angles a1, a2, and a3 is 180 degrees.

In a specific embodiment, the first light incident surface 111 and the second light incident surface 121 are connected to each other and are not coplanar. As shown in FIG. 7, there is an interface 126 between the first light-incident surface 110 and the second light-incident surface 120, the first light-incident surface 111 and the interface 126 have a fourth included angle b1, and the second light-incident surface 121 and the interface There is a fifth included angle b2 between 126, a sixth included angle c1 between the first reflective surface 112 and the interface 126, and a seventh included angle c2 between the second reflective surface 122 and the interface 126. In this way, by adjusting the fourth included angle b1 and the fifth included angle b2, the reflection path of the light can be changed as required. In order to maintain symmetry and equality in the subsequent image adjustment of the imaging, the fourth included angle b1 can be set to be equal to the fifth included angle b2 and the sixth included angle c1 can be set to be equal to the seventh included angle c2.

As shown in FIGS. 8 and 9, in order to keep the first light incident surface 111 and the second light incident surface 121 coplanar without warping and deformation of the plane, or to make the first reflection surface 112 and the second reflection The surfaces 122 maintain a certain included angle firmly, and the composite beam module 100 of the embodiment of the present invention may further include a beam frame 130. The frame 130 has a bottom surface 133 and a first oblique side surface 131 and a second oblique side surface 132 extending on two opposite sides of the bottom surface 133. The first reflective surface 112 is used to be fixed to the first inclined side surface 131, and the second reflective surface 122 is used to be fixed to the second inclined side surface 132.

As shown in FIGS. 8 and 9, the third included angle a3 between the first reflective surface 112 and the second reflective surface 122 is equal to the included angle between the first oblique side surface 131 and the second oblique side surface 132. The first reflecting surface 112 and the second reflecting surface 122 are respectively combined with the first oblique side surface 131 and the second oblique side surface 132, and the third included angle a3 can maintain a fixed angle through the frame 130, so that the first light incident surface 111 and The second light incident surface 121 maintains a coplanar plane. In one embodiment, the sixth included angle c1 and the seventh included angle c2 can also be maintained at a fixed angle through the frame 130, so that the first light incident surface 111 and the second light incident surface 121 are maintained non-coplanar.

Therefore, in terms of the configuration of material properties, the rigidity coefficient of the frame 130 can be configured to be greater than the rigidity coefficients of the first frame 110 and the second frame 120; for example, the frame 130 is a reflective frame made of glass, In addition, the first rim 110 and the second rim 120 are made of plastic rim, so as to reduce the production cost of the first rim 110 and the second rim 120, and the double rim structure can be maintained by the rim frame 130 form. The aforementioned plastic material can be, but is not limited to, polymethyl methacrylate (PMMA, namely acrylic), polystyrene (PS), polycarbonate (English: Polycarbonate, PC) and other materials that have material costs Low and easy to process optical plastic.

As shown in FIG. 8 and FIG. 9, the first frame 110, the second frame 120 and the frame 130 can be bonded through the optical glue 170. The optical glue 170 adheres the first reflective surface 112 to the first oblique side surface 131 and the second reflective surface 122 to the second oblique side surface 132 to fix the first frame 110 and the second frame 120 to the frame 130. In the case where the first mirror 110 and the second mirror 120 are made of plastic, and the frame 130 is a reflective mirror made of glass, the surfaces of the first reflective surface 112 and the second reflective surface 122 may be uneven. And affect the reflection effect. The adhesion through the optical glue 170 can fill the unevenness. In addition, the aforementioned reflective coatings provided on the first reflective surface 112 and the second reflective surface 122 can also be omitted, and on the first oblique side surface 131 and the second oblique side surface 132 Set up a reflective coating to create a relatively flat reflective surface.

As shown in FIG. 10 and FIG. 11, the composite lens module 100 of the embodiment of the present invention may further include a lens frame 140. The lens frame 140 has a bottom plate 141 and a vertical plate 142, and the vertical plate 142 extends vertically from the bottom plate 141. The bottom surface 133 of the frame 130 is provided with a vertical plate 142 such that the first inclined side surface 131 and the second inclined side surface 132 are perpendicular to the bottom plate 141. The first beam 110 and the second beam 120 are disposed on the bottom plate 141, so that the first light incident surface 111 and the second light incident surface 121 are perpendicular to the bottom plate 141, and the first reflection surface 112 and the second reflection surface 122 are combined with the edge Frame 130.

As shown in FIGS. 12 and 13, based on the above-mentioned composite camera module 100, an embodiment of the present invention further provides an image capturing module, including the aforementioned composite camera module 100 and two image cameras 150. The image camera 150 is directly or indirectly fixed to the first beam 110 and the second beam 120, and captures images toward the first light-emitting surface 113 and the second light-emitting surface 123, respectively. In the embodiment of the present invention, the two video cameras 150 are fixed to the lens frame 140 and indirectly fixed to the first frame 110 and the second frame 120. As shown in FIGS. 12 and 13, the lens frame 140 further includes two brackets 143 extending on the bottom plate 141 respectively, and two image cameras 150 are fixed to each bracket 143 respectively. In different embodiments, the bracket 143 may be extended on the vertical plate 142; in different embodiments, each video camera 150 has an extended structure for connecting the first video camera 110 or the second video camera 120, so that the second video camera 150 It is directly fixed to the first ridge 110 and the second ridge 120.

Referring to FIG. 14, the first frame 110 and an image camera 150 form a periscope group. The combination of the first frame 110 and the video camera 150 enables the first frame 110 to have a first field-of-view (FOV1) in front of the first light incident surface 111. The second frame 120 and another video camera 150 form another periscope group. The combination of the second frame 120 and the video camera 150 enables the second frame 120 to have a second field of view FOV2 in front of the second light incident surface 121. The matching of the two periscope groups can enable the composite periscope module 100 to obtain a relatively wide-angle equivalent field of view. The aforementioned equivalent field of view can be equal to FOV1 + FOV2, or slightly smaller than FOV1 + FOV2. When the equivalent field of view is equal to FOV1 + FOV2, the two image cameras 150 respectively obtain an image of half of the target scene S; the two images can be spliced by a back-end data processing circuit to form an equivalent image with a complete target scene S. When the equivalent field of view is less than FOV1 + FOV2, the images obtained by the two image cameras 150 are slightly larger than half of the target scene S, that is, the images obtained by the two image cameras 150 are partially overlapped; the two images can be processed by the back-end data processing circuit After stitching, and cropping partially overlapped, an equivalent image with a complete target scene S is formed.

In the present invention, the interface filling medium 160 is used to fill the chamfered planes used for splicing the two ridges, so as to avoid the problem of flare generated at the splicing position. At the same time, in at least one embodiment of the present invention, the frame 130 made of a material with a higher rigidity coefficient is added, which can avoid the deformation of the double frame frame and maintain the flatness of the light incident surface; therefore, the two frame can be modified. It is made of low-cost optical plastic, which effectively reduces the production cost.

100: Composite 稜鏡 module 110: The First Secret 111: The first light-incident surface 112: first reflecting surface 113: First Glossy Surface 114: first side 115: first chamfer plane 120: The Second Secret 121: second light-incident surface 122: second reflective surface 123: Second Glossy Surface 124: second side 125: second chamfer plane 126: Interface 130: yoke 131: First oblique side 132: second oblique side 133: Bottom 140: lens frame 141: bottom plate 142: Standing Board 143: Bracket 150: Video camera 160: Interface fill medium 170: Optical glue a1: the first included angle a2: second included angle a3: third included angle b1: the fourth included angle b2: Fifth included angle c1: sixth included angle c2: seventh included angle FOV1: first field of view FOV2: second field of view S: target scene

FIG. 1 is a three-dimensional exploded view of a first ridge, a second ridge, and an interface filling medium in an embodiment of the present invention. Fig. 2 is a three-dimensional view of a first frame, a second frame, and an interface filling medium in an embodiment of the present invention. FIG. 3 is a top exploded view of the first ridge, the second ridge, and the interface filling medium in the embodiment of the present invention. FIG. 4 is a top view of the first ridge, the second ridge, and the interface filling medium in the embodiment of the present invention. Fig. 5 is a schematic diagram of light traveling on a first beam and a second beam in an embodiment of the present invention. Fig. 6 is a schematic diagram of light traveling on the first beam and the second beam in another embodiment of the present invention. FIG. 7 is a top view of the first ridge, the second ridge, and the interface filling medium in another embodiment of the present invention. Fig. 8 is an exploded top view of the first frame, the second frame, the interface filling medium, and the frame in the embodiment of the present invention. Fig. 9 is a top view of the first frame, the second frame, the interface filling medium, and the frame in the embodiment of the present invention. FIG. 10 is a three-dimensional exploded view of the first frame, the second frame, the interface filling medium, the frame and the lens frame in the embodiment of the present invention. FIG. 11 is a perspective view of a first frame, a second frame, an interface filling medium, a frame, and a lens frame in an embodiment of the present invention. FIG. 12 is a three-dimensional exploded view of the image capturing module in the embodiment of the present invention. FIG. 13 is a three-dimensional view of an image capturing module in an embodiment of the present invention. FIG. 14 is a top view of the image capturing module in the embodiment of the present invention.

100: Composite 稜鏡 module

110: The First Secret

111: The first light-incident surface

112: first reflecting surface

120: The Second Secret

121: second light-incident surface

122: second reflective surface

130: yoke

140: lens frame

141: bottom plate

142: Standing Board

160: Interface fill medium

Claims (15)

A composite module, including: A first beam, having a first light-incident surface, a first reflective surface, and a first light-emitting surface that are connected to each other, the first light-incident surface and the first light-emitting surface are connected to a first side, And the first light incident surface and the first reflecting surface are connected to a first chamfered plane; A second light beam having a second light incident surface, a second reflecting surface and a second light emitting surface which are connected to each other, the second light incident surface and the second light emitting surface are connected to a second side, And the second light incident surface and the second reflecting surface are connected to a second chamfered plane; wherein, the first chamfered plane and the second chamfered plane are attached to each other, so that the first light incident surface and the The second light incident surfaces are connected to each other, and the first side and the second side are parallel to each other and far away from each other; and An interface filling medium is filled between the first chamfered plane and the second chamfered plane. The composite optical module according to claim 1, wherein the interface filling medium is optical glue. According to claim 1, the composite enamel module, wherein the interface filling medium is an opaque ink. The composite beam module according to claim 1, wherein the first reflective surface and the second reflective surface are provided with reflective coatings. The composite 稜鏡 module as described in claim 1, wherein: There is a first angle between the first light incident surface and the first reflecting surface, a second angle between the second light incident surface and the first reflecting surface, the first reflecting surface and the second reflecting surface There is a third included angle between the surfaces, and the sum of the first, second, and third included angles is 180 degrees. As mentioned in claim 1, the composite 稜鏡 module further includes: A frame has a bottom surface, a first oblique side surface and a second oblique side surface extending on two opposite sides of the bottom surface; wherein, the first reflecting surface is used to be fixed to the first oblique side surface, and The second reflecting surface is used for fixing to the second oblique side surface. The composite beam module according to claim 6, further comprising an optical glue for bonding the first reflective surface to the first oblique side surface, and bonding the second reflective surface to the second oblique side surface. The composite beam module according to claim 6, wherein the first oblique side surface and the second oblique side surface have reflective coatings. The composite 稜鏡 module according to claim 6, in which: The included angle between the first reflective surface and the second reflective surface is equal to the included angle between the first oblique side surface and the second oblique side surface. The composite 稜鏡 module according to claim 6, in which: The rigidity coefficient of the frame is greater than the rigidity coefficients of the first frame and the second frame. The composite jade module described in claim 10, wherein: The frame is a reflective frame made of glass, and the first frame and the second frame are plastic frames. The composite frame module according to claim 6, further comprising a lens frame having a bottom plate and a vertical plate, the vertical plate extends perpendicularly to the bottom plate; wherein the bottom surface of the frame is provided with the vertical plate , Make the first oblique side surface and the second oblique side surface perpendicular to the bottom plate, and the first and the second oblique sides are placed on the bottom plate so that the first light incident surface and the second light incident surface are perpendicular to The bottom plate, and the first reflective surface and the second reflective surface are combined with the frame. An image capture module, including: The composite jade module according to any one of claims 1 to 11; and Two image cameras are directly or indirectly fixed to the first light-emitting surface and the second light-emitting surface, and capture images toward the first light-emitting surface and the second light-emitting surface respectively. An image capture module, including: The composite module as described in claim 12; and Two image cameras are fixed on the lens frame and respectively capture images toward the first light-emitting surface and the second light-emitting surface. The image capturing module according to claim 14, wherein the lens frame further includes two brackets, which extend on the bottom plate or the vertical plate, and respectively correspond to the first light incident surface and the second light incident surface; the Two video cameras are respectively fixed on each bracket.

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