Camera module with small reflection part and augmented reality optical device using the same

Abstract

Provided are a camera module using a small reflection part and an optical device for augmented reality using the same. The camera module using a small reflection part includes a lens part in which at least one lens is disposed, and an image sensor that converts image light incident through the lens part into an electrical signal and outputs the same. The camera module using a small reflection part includes a reflection part that reflects the incident image light to be transmitted to the lens part, and a reflection surface of the reflection part is inclined with respect to an optical axis of the incident light to reflect the incident image light to the lens part and serve as an aperture for the incident light.

Description

Technical Field

[0001] The present invention relates to a camera module and an optical device for augmented reality using the same, and more specifically, to a camera module and an optical device for augmented reality using the same, which can miniaturize the device by utilizing a small reflective portion and make the light optimization design of the camera module easier. Background Technology

[0002] As is well known, smartphones or portable devices such as tablets and laptops include camera modules.

[0003] The camera module used in such portable devices typically includes a lens section with at least one lens and an image sensor that converts the image light incident through the lens section into an electrical signal and outputs it.

[0004] Figure 1 This diagram schematically illustrates the general structure of a conventional camera module 100.

[0005] like Figure 1 As shown, the camera module 100 includes a lens section 101 and an image sensor 102. Typically, at least one lens is sequentially arranged on the lens section 101, and the image sensor 102 converts the image light incident on the lens section 101 into an electrical signal and outputs it.

[0006] With the miniaturization of portable devices such as smartphones, the overall size and volume of such conventional camera modules 100 have also been reduced. However, at the same time, as the performance of camera modules 100 is also rapidly developing, multiple lenses are used to provide higher optical performance. Therefore, there are limitations when increasing the focal length, resulting in limitations such as... Figure 1 Problems such as the lens portion 101 protruding outwards as shown limit the ability to reduce the overall width w, which makes it difficult to perform light optimization design for the camera module and becomes an obstacle to miniaturizing the form factor of portable devices. Summary of the Invention

[0007] Technical issues

[0008] The present invention aims to solve the problems described above, and its object is to provide a camera module that can utilize a small reflective part to miniaturize the device and make the light optimization design of the camera module easier.

[0009] Furthermore, another object of the present invention is to provide an augmented reality optical device that can be used as a photographic device while providing augmented reality images by using a camera module with a small reflector.

[0010] Technical solution

[0011] To solve the problems as described above, the present application provides a camera module using a small reflection part, the camera module including a lens part in which at least one lens is disposed and an image sensor which converts image light incident through the lens part into an electric signal and outputs, the camera module using a small reflection part including a reflection part which reflects the incident image light to be transmitted to the lens part, and a reflection surface of the reflection part is configured to be inclined with respect to an optical axis of the incident light to reflect the incident image light to the lens part and as a stop for the incident light.

[0012] According to another aspect of the present application, there is provided a camera module using a small reflection part, the camera module including an image sensor which converts image light incident through the lens part into an electric signal and outputs, the camera module using a small reflection part including a reflection part which reflects the incident image light to be transmitted to the image sensor, and a reflection surface of the reflection part is configured to be inclined with respect to an optical axis of the incident light to reflect the incident image light to the image sensor and as a stop for the incident light, the reflection surface of the reflection part being formed as a concave surface with respect to an incident direction of the image light incident to the reflection part.

[0013] According to still another aspect of the present application, there is provided a camera module using a small reflection part, the camera module including a lens part in which at least one lens is disposed and an image sensor which converts image light incident through the lens part into an electric signal and outputs, the camera module using a small reflection part including a reflection part which reflects the incident image light to be transmitted to the lens part, and a reflection surface of the reflection part is configured to be inclined with respect to an optical axis of the incident light to reflect the incident image light to the lens part and as a stop for the incident light, the reflection surface of the reflection part being formed as a convex surface with respect to an incident direction of the image light incident to the reflection part.

[0014] Herein, the lens part can be formed as a concave lens.

[0015] According to still another aspect of the present application, there is provided a camera module using a small reflection part, the camera module including a lens part in which at least one lens is disposed and an image sensor which converts image light incident through the lens part into an electric signal and outputs, the camera module using a small reflection part including a reflection part which reflects the incident image light to be transmitted to the lens part, and a reflection surface of the reflection part is configured to be inclined with respect to an optical axis of the incident light to reflect the incident image light to the lens part and as a stop for the incident light, the reflection surface of the reflection part being formed as a curved surface having a curvature with respect to an incident direction of the image light incident to the reflection part, the lens part being formed as a curved surface having a curvature with respect to an incident direction of the image light incident to the lens part, and the reflection part being embedded in an optical mechanism having a refractive index.

[0016] According to still another aspect of the present application, there is provided a camera module using a small reflection part, the camera module including a first lens part and a second lens part configured with at least one lens, and a first image sensor and a second image sensor which convert image light incident through the lens parts into an electric signal and output, the camera module using a small reflection part including: a first reflection part formed with a hole in a central part, and reflecting the incident image light to be transmitted to the first lens part; and a second reflection part configured inside the hole, and reflecting the incident image light to be transmitted to the second lens part, and the first reflection part and the second reflection part are configured such that reflecting surfaces of the first reflection part and the second reflection part are respectively inclined with respect to an optical axis of the incident light to reflect the incident image light to the first lens part and the second lens part, respectively, and an inclination angle of the second reflection part is not parallel to an inclination angle of the first reflection part.

[0017] Preferably, a size of the second reflection part is smaller than a size of the first reflection part.

[0018] Further, preferably, optical axes of exit light emitted to the first lens part and the second lens part are parallel to each other.

[0019] According to still another aspect of the present application, there is provided a camera module using a small reflection part, the camera module including a first lens part and a second lens part configured with at least one lens, and a first image sensor and a second image sensor which convert image light incident through the lens parts into an electric signal and output, the camera module using a small reflection part including: a first reflection part formed with a hole in a central part, and reflecting the incident image light to be transmitted to the first lens part; and a second reflection part configured inside the hole, and reflecting the incident image light to be transmitted to the second lens part, and the first reflection part and the second reflection part are configured such that reflecting surfaces of the first reflection part and the second reflection part are respectively inclined with respect to an optical axis of the incident light to reflect the incident image light to the first lens part and the second lens part, respectively, and an inclination angle of the second reflection part is not parallel to an inclination angle of the first reflection part.

[0020] Preferably, a size of the second reflection part is smaller than a size of the first reflection part.

[0021] Further, preferably, optical axes of exit light emitted to the first lens part and the second lens part are parallel to each other.

[0022] According to still another aspect of the present application, there is provided a composite camera module configured with a plurality of camera modules as described above, each of the camera modules being configured in a plane perpendicular to an optical axis of the incident image light.

[0023] wherein, preferably, each of the camera modules is arranged in the vertical plane.

[0024] Further, each of the camera modules can be arranged at intervals of the same angle from each other with reference to a center point of an intersection of connection lines of reflection portions of the camera modules arranged in units of the vertical plane as the connection.

[0025] According to still another aspect of the present application, there is provided an augmented reality optical device including the camera module as described above, and an image emission portion that emits image light corresponding to an augmented reality image, the reflection portion being configured to tilt a reflection surface of the reflection portion with respect to an optical axis of incident light to reflect image light incident from an actual world to the lens portion, an opposite surface of the reflection surface of the reflection portion reflecting and transmitting the image light corresponding to the augmented reality image emitted from the image emission portion toward a pupil of an eye of a user to provide the user with the augmented reality image.

[0026] wherein, preferably, the image emission portion is arranged in a direction opposite to the lens portion with the reflection portion as a center.

[0027] Effects of the Invention

[0028] According to the present application, it is possible to provide a camera module using a small reflection portion that can miniaturize a device using the small reflection portion and can make it easier to optimize design of light of a camera module.

[0029] Further, the present application can provide an augmented reality optical device that can be used as a photographic device while providing an augmented reality image by using a camera module using a small reflection portion. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a diagram schematically showing a general structure of a conventional camera module 100.

[0031] Figure 2a and Figure 2b is a diagram showing a camera module 200 using a small reflection portion according to an embodiment of the present application, Figure 2a shows a side view, Figure 2b shows a front view.

[0032] Figure 3a shows a side view of a camera module 200A according to another embodiment of the present application.

[0033] Figure 3b shows a side view of a camera module 200B according to still another embodiment of the present application.

[0034] Figure 3cA side view of a camera module 200C showing yet another embodiment of the present application.

[0035] Figure 4 A side view of a camera module 300 for explaining another embodiment of the present application.

[0036] Figure 5 A front view showing the first reflection part 30A and the second reflection part 30B.

[0037] Figure 6 A side view of a camera module 400 for explaining yet another embodiment of the present application.

[0038] Figure 7 A diagram for explaining a case where the camera modules 200, 300, 400 of a plurality of embodiments of the present application are formed to implement a composite camera module 500.

[0039] Figure 8 and Figure 9 A diagram for explaining an augmented reality optical device 600 including the camera module 200 of the present application, Figure 8 is a side view, Figure 9 is a front view. DETAILED DESCRIPTION

[0040] Embodiments of the present application will be explained in detail below with reference to the accompanying drawings.

[0041] Figure 2a and Figure 2b is a diagram showing a camera module 200 using a small reflection part of an embodiment of the present application, Figure 2a shows a side view, Figure 2b shows a front view.

[0042] Referring to Figure 2a and Figure 2b , the camera module 200 using a small reflection part of the present embodiment (hereinafter simply referred to as "camera module 200") includes a lens part 10, an image sensor 20, and a reflection part 30.

[0043] The lens part 10 is configured with at least one lens (not shown) and performs a function of transferring image light radiated from an actual world object and incident through the reflection part 30 to the image sensor 20.

[0044] The image sensor 20 performs a function of converting image light incident through the lens part 10 into an electric signal and outputting the same.

[0045] Such a lens part 10 and image sensor 20 are not the direct object of the present application per se and are well known in the art, and thus detailed descriptions thereof will be omitted here.

[0046] The reflection section 30 is a mechanism that performs a function of reflecting image light coming from the outside (actual world) that is incident through an opening section (not shown) and passing it to the lens section 10. The reflection surface 31 of the reflection section 30 is configured to be inclined with respect to the optical axis of the incident light so as to reflect the incident image light to the lens section 10, and by such a configuration, the reflection section 30 functions as a stop for the incident light.

[0047] That is, the reflection section 30 is configured so that the reflection surface 31 of the reflection section 30 is not parallel to the optical axis of the incident light so as to prevent the optical axis of the incident image light (incident light) from being parallel to the optical axis of the image light (emitted light) emitted to the lens section 10.

[0048] In order to minimize the width w of a portable device such as a smartphone on which the camera module 200 is mounted as much as possible, it is preferable that the reflection surface 31 of the reflection section 30 be configured to be at an angle of 45° with respect to the optical axis of the incident light. In this case, the optical axis of the incident light and the optical axis of the emitted light emitted to the lens section 10 are perpendicular. Therefore, the image light incident to the reflection section 30 and the image light emitted by the reflection section 30 are also perpendicular.

[0049] On the other hand, the reflection section 30 in the present application is preferably formed to have a size smaller than the size of a human pupil. As is well known, the size of a human pupil is approximately 8 mm or less, and if the reflection section 30 is formed to be smaller than the size of the pupil, the Field of Depth of the light incident to the pupil through the reflection section 30 can be made close to infinity, that is, the Field of Depth can be made very deep. Here, the Field of Depth refers to a range that is recognized to be in focus, and when the Field of Depth is deepened, it means that the focal distance is also deepened. This can be seen as a pin hole effect.

[0050] Based on such a principle, the reflection section 30 in the present application is preferably formed to have a size smaller than the size of a human pupil, that is, to be 8 mm or less, and more preferably, to be 4 mm or less, so as to obtain the pin hole effect by deepening the Field of Depth.

[0051] That is, by forming the reflection section 30 to have a size smaller than the size of a human pupil, the Field of Depth of the image light incident through the reflection section 30 can be made close to infinity, that is, the Field of Depth can be made very deep, and thus an image with a deep Field of Depth can be obtained by the lens section 10 and the image sensor 20.

[0052] By such a configuration, the reflection section 30 functions as a stop for the incident light, and thus it is not necessary to separately provide a member such as a stop, and as a result, the camera module 200 can be miniaturized and the structure can be simplified.

[0053] Further, the reflection section 30 is preferably in a shape without an edge, and more preferably in a circular shape.

[0054] Figure 3a A side view of a camera module 200A showing another embodiment of the present application.

[0055] Figure 3a The camera module 200A of the embodiment is basically the same as the camera module 200 of the embodiment of Figure 2a and Figure 2b the embodiment, but differs in that the lens section 10 is omitted in the camera module 200. Thus, the camera module 200A is composed of the image sensor 20 and a reflection section 30a, and the reflection section 30a reflects the image light incident from the outside (actual world) to the image sensor 20.

[0056] Further, the reflection surface 31a of the reflection section 30a can be configured to be inclined with respect to the optical axis of the incident light to reflect the incident image light to the image sensor 20 as a stop for the incident light, while the reflection surface 31a of the reflection section 30a is formed as a concave surface with respect to the incident direction of the image light incident to the reflection section 30a to replace the function of the omitted lens section 10. In Figure 3a In the embodiment, the reflection surface 31a of the reflection section 30a is formed as a concave surface with respect to the incident direction of the image light incident to the reflection section 30a. Thus, Figure 3a the reflection surface 31a in the camera module 200A functions as a concave mirror, and the reflection section 30a simultaneously performs the function as a stop, as a concave mirror, and the function of the omitted lens section 10.

[0057] Figure 3b A side view of a camera module 200B showing still another embodiment of the present application.

[0058] Figure 3b The embodiment is basically the same as the camera module 200 of the embodiment of Figure 2a and Figure 2b the embodiment, but differs in that the reflection surface 31b of the reflection section 30b is formed as a convex surface with respect to the incident direction of the image light incident to the reflection section 30b. Thus, the reflection section 30b functions as a convex mirror while performing the function as a stop as described above.

[0059] In this case, since the image light reflected by the reflection surface 31b has a property of being diffused by the reflection surface 31b functioning as a convex mirror, it is preferable that the lens section 10 be formed as a concave lens.

[0060] Figure 3c A side view of a camera module 200C showing still another embodiment of the present application.

[0061] Figure 3c The embodiment is basically the same as the camera module 200 of the embodiment of Figure 2a andFigure 2b The camera module 200 in the embodiment is the same, but the difference is that the reflective part 30c and the lens part 10 have curvature, and the reflective part 30c is formed to be embedded in the optical mechanism 60 with refractive index, thereby optimizing the optical performance.

[0062] That is, the reflecting surface 31c of the reflecting portion 30c is formed, as described above, with a curvature equivalent to that of a concave or convex mirror relative to the incident direction of the image light incident on the reflecting portion 30c, and the lens portion 10 is also formed with a curvature relative to the incident direction of the image light incident on the lens portion 10. For example, depending on whether the reflecting portion 30c is a concave or convex mirror, the lens portion 10 can be formed to include a convex lens or a concave lens. Furthermore, it is characterized by the provision of an optical mechanism 60 having a refractive index for optimizing the desired optical performance, and the embedding of the reflecting portion 30c within the optical mechanism 60.

[0063] With this configuration, there is an advantage that the optical performance can be optimized by combining the refractive index of the optical mechanism 60, the curvature of the reflective part 30c, and the curvature of the lens part 10.

[0064] Figure 4 This is a side view illustrating another embodiment of the camera module 300 of the present invention.

[0065] Figure 4 The camera module 300 of the embodiment and in Figures 2a-2b The embodiments described herein are basically the same, except that the reflective part 30 is composed of a first reflective part 30A and a second reflective part 30B, and lens parts 10A and 10B and image sensors 20A and 20B are independently combined in each reflective part 30A and 30B.

[0066] Reference Figure 4 The first reflector 30A and in Figure 2a and Figure 2b The reflective portion 30 described in the embodiment is the same, but the difference is that a hole 32 is formed in the central portion.

[0067] Furthermore, the second reflector 30B and in Figure 2a and Figure 2b The reflective portion 30 described in the embodiments is basically the same, but the difference is that it is smaller in size than the first reflective portion 30A, and is configured such that the tilt angle of the second reflective portion 30B is not parallel to the tilt angle of the first reflective portion 30A inside the hole 32 of the first reflective portion 30A.

[0068] The first reflector 30A and the second reflector 30B are like... Figure 2a and Figure 2bThe first reflecting portion 30A and the second reflecting portion 30B are configured so that the reflecting surfaces thereof are inclined with respect to the optical axis of the incident light, respectively, to reflect the incident image light to the first lens portion 10A and the second lens portion 10B, respectively.

[0069] The image light reflected by the first reflecting portion 30A and emitted is transmitted to the first lens portion 10A and transmitted to the first image sensor 20A through the first lens portion 10A, as described in Figure 2a and Figure 2b

[0070] Further, the image light reflected by the second reflecting portion 30B and emitted is transmitted to the second lens portion 10B and transmitted to the second image sensor 20B through the second lens portion 10B.

[0071] The respective electric signals outputted from the first image sensor 20A and the second image sensor 20B are synthesized by an image synthesizing portion (not shown) to generate a final image.

[0072] Figure 5 A front view of the first reflecting portion 30A and the second reflecting portion 30B is shown.

[0073] As shown in Figure 5 , the second reflecting portion 30B having a size smaller than the first reflecting portion 30A is arranged inside a hole 32 formed in the central portion of the first reflecting portion 30A. Since Figure 5 is a front view, the hole 32 is not visible because it is blocked by the second reflecting portion 30B.

[0074] For example, when the size of the first reflecting portion 30A is made to be 4 mm or less as described above, the size of the second reflecting portion 30B can be made to be 2 mm or less.

[0075] As for the reflecting portions 30 of the embodiments of Figure 4 and Figure 5 , likewise, as described in the foregoing in the embodiments of Figure 2a and Figure 2b , it is preferable that the reflecting surfaces of the first reflecting portion 30A and the second reflecting portion 30B are arranged to be at an angle of 45° with respect to the optical axis of the incident light, respectively, and that the reflecting surfaces of the first reflecting portion 30A and the second reflecting portion 30B are arranged perpendicularly to each other.

[0076] In this case, the optical axes of the emitted light emitted to the first lens portion 10A and the second lens portion 10B are parallel to each other.

[0077] According to such an embodiment, the size of the second reflecting portion 30B is smaller than the first reflecting portion 30A, and thus an image having a depth of field deeper than that of the image generated by the first reflecting portion 30A can be generated.

[0078] ​Further, since images are generated using the image light which has entered through the same opening portion (not shown), there is an advantage that it is easy to synthesize the images generated by the image sensors 20A, 20B.

[0079] Figure 6 is a side view of a camera module 400 for explaining still another embodiment of the present application.

[0080] Figure 6 The camera module 400 of the embodiment of Figure 4 is the same as that of the embodiment of

[0081] Here, the semi-transparent material means that the incident image light is partially transmitted. The concept of partially transmitting light is not a direct object of the present application per se and is known in the art, and thus detailed description will be omitted here.

[0082] Further, the second reflecting portion 30B is the same as that of the embodiment of Figure 4 , but differs in that it is not formed inside the hole 32, but is disposed at the rear side of the first reflecting portion 30A with reference to the incident image light. Since the first reflecting portion 30A is formed of a semi-transparent material, the second reflecting portion 30B transmits the image light transmitted from the first reflecting portion 30A to the second lens portion 10B.

[0083] As for the embodiment of Figure 6 , likewise, since the size of the second reflecting portion 30B is formed to be smaller than the size of the first reflecting portion 30A, it is possible to generate an image having a deeper depth of field than the image generated by the first reflecting portion 30A.

[0084] Further, the embodiment of Figure 6 also has the advantage that it is easy to synthesize the images generated by the image sensors 20A, 20B, like the embodiments of Figure 4 and Figure 5 , since images are generated using the image light which has entered through the same opening portion (not shown).

[0085] Figure 7 is a diagram for explaining a case where a plurality of camera modules 200, 200A, 200B, 200C, 300, 400 of embodiments of the present application are formed to implement a composite camera module 500.

[0086] Figure 7 The composite camera module 500 is characterized in that a plurality of the aforementioned camera modules 200, 200A, 200B, 200C, 300, 400 of the embodiments are disposed.

[0087] That is, in the embodiment of Figure 7The embodiment of the present application is characterized in that the lens portion 10, the image sensor 20, and the reflection portion 30 are combined to form one unit camera module 200, 200A, 200B, 200C, 300, 400, and the reflection portion 30 of each unit camera module 200, 200A, 200B, 200C, 300, 400 reflects and transmits the image light to the combined lens portion 10, respectively.

[0088] In Figure 7 , four unit camera modules 200, 200A, 200B, 200C, 300, 400 are arranged, and each unit camera module 200, 200A, 200B, 200C, 300, 400 is arranged at an angle of 90° with respect to the center point.

[0089] Preferably, each unit camera module 200, 200A, 200B, 200C, 300, 400 is arranged in a plane perpendicular to the optical axis of the incident image light.

[0090] In addition, each unit camera module 200, 200A, 200B, 200C, 300, 400 is preferably arranged at an equal angle interval with respect to the center point as the intersection point of the connecting lines connecting the reflection portions 30 of the respective unit camera modules 200, 200A, 200B, 200C, 300, 400 arranged in the vertical plane.

[0091] The reflection portion 30 of each unit camera module 200, 200A, 200B, 200C, 300, 400 reflects and transmits the incident image light to the lens portion 10 and the image sensor 20 as described above, the image sensor 20 converts the incident image light into an electrical signal and outputs it, and the respective electrical signals output from the image sensor 20 are synthesized by an image synthesizer (not shown) to generate a final image.

[0092] Figure 7 In the above embodiment, four camera modules 200 are illustrated, but this is merely exemplary, and it is obvious that two, three, five, etc. can be arranged as needed.

[0093] Figure 8 And Figure 9 is a diagram for explaining an augmented reality optical device 600 including the camera module 200 of the present application, Figure 8 is a side view, Figure 9 is a front view.

[0094] Referring to Figure 8 and Figure 9The optical device for augmented reality 600 is characterized by including the camera module 200 as described in the foregoing embodiments, and further including an image emission section 40 that emits image light corresponding to an augmented reality image, and the reflection section 30 provides the user with the augmented reality image by reflecting and transmitting the image light corresponding to the augmented reality image emitted from the image emission section 40 toward the pupil 50 of the user's eye.

[0095] The image emission section 40 is a mechanism that emits image light corresponding to an augmented reality image, and can be, for example, a display device such as a small LCD, or a reflection mechanism or a refraction mechanism that reflects or refracts the image light emitted from the display device.

[0096] That is, the image emission section 40 means the display device itself that displays an augmented reality image, or other various mechanisms such as a reflection or refraction mechanism that emit the image light emitted from the display device.

[0097] Since such an image emission section 40 itself is not a direct object of the present application and is known in the art, detailed description will be omitted here.

[0098] On the other hand, the augmented reality image means a virtual image displayed on the display device and transmitted to the pupil 50 of the user through the reflection section 30 when the display device is the image emission section 40, or a virtual image displayed on the display device and transmitted to the pupil 50 of the user through the image emission section 40 and the reflection section 30 when the display device is not the image emission section 40.

[0099] Such an augmented reality image can be a still image in the form of an image or a video, for example.

[0100] The augmented reality image provides the user with a virtual image by being emitted by the image emission section 40 and transmitted to the pupil 50 of the user through the reflection section 30, and at the same time, by the camera module 200 as described above, the image light emitted from the actual object existing in the actual world is transmitted to the image sensor 20 through the reflection section 30 and the lens section 10, so that the user can obtain an image of the image light from the actual world while receiving the augmented reality image.

[0101] On the other hand, it is preferable that the image emission section 40 be disposed in the direction opposite to the lens section 10 with the reflection section 30 as the center.

[0102] As described above, the reflection part 30 is included in the camera module 200, is formed to have a size of 4mm or less, and reflects the incident image light to be transmitted to the lens part, and for this reason, the reflection part 30 is configured so that the reflection surface 31 is inclined with respect to the optical axis of the incident light. Therefore, the image light incident from the actual world is transmitted to the image sensor 30 by the reflection surface 31 of the reflection part 30 through the lens part 10, and at the same time, the image light corresponding to the augmented reality image is transmitted to the pupil 50 through the periphery of the reflection part 30 having a size smaller than the pupil 50.

[0103] As described above, the reflection surface 31 of the reflection part 30 is configured to be angled at 45° with respect to the optical axis of the incident light. Therefore, the image emission part 40 is configured in the direction opposite to the lens part 10 with the reflection part 30 as the center, and for this reason, the opposite surface 32 of the reflection surface 31 of the reflection part 30 is also configured to be angled at 45° with respect to the optical axis of the image light corresponding to the augmented reality image incident from the image emission part 40.

[0104] On the other hand, the opposite surface 32 of the reflection surface 31 of the reflection part 30 reflects the image light corresponding to the augmented reality image emitted from the image emission part 40 configured in the direction opposite to the lens part 10 with the reflection part 30 as the center, and transmits the image light to the pupil 50 of the user's eye to provide the user with the augmented reality image.

[0105] On the other hand, the augmented reality image emitted from the image emission part 40 can also be electrically combined with the image of the actual world entering the image sensor 20.

[0106] On the other hand, since the reflection part 30 is formed to have a size smaller than the size of the pupil of a person, i.e., is formed to be 8mm or less, and more preferably 4mm or less, as described above, in order to obtain a pin hole effect by deepening the depth of field, the depth of field of the light incident to the pupil 50 through the reflection part 30 can be made close to infinity, i.e., the depth of field can be made very deep, and therefore, even if the user changes the focal distance to the actual world while gazing at the actual world, a pin hole effect in which the focal point of the augmented reality image is always recognized to be in focus regardless of this can occur.

[0107] On the other hand, the image light corresponding to the augmented reality image emitted from the image emission part 40 can be directly transmitted to the reflection part 30, but can also be transmitted after being reflected at least once between the image emission part 40 and the reflection part 30.

[0108] Although the present application has been described above with reference to the preferred embodiments of the present application, the present application is not limited to the above-described embodiments, and it is noted that various modifications and changes can be made within the scope of the present application.

Claims

1. A camera module utilizing a small reflective portion, the camera module comprising a first lens portion and a second lens portion configured with at least one lens, and a first image sensor and a second image sensor for converting image light incident through the lens portion into electrical signals and outputting them, the camera module utilizing the small reflective portion being characterized in that it comprises: The first reflective portion has a hole formed in its central portion and reflects the incident image light to the first lens portion; as well as The second reflective element is disposed inside the aperture and reflects the incident image light to the second lens element. The first reflective portion and the second reflective portion are configured such that the reflecting surfaces of the first reflective portion and the second reflective portion are tilted relative to the optical axis of the incident light, so as to reflect the incident image light to the first lens portion and the second lens portion, respectively, and the tilt angle of the second reflective portion is not parallel to the tilt angle of the first reflective portion.

2. The camera module utilizing a small reflector according to claim 1, characterized in that, The size of the second reflective part is smaller than the size of the first reflective part.

3. The camera module utilizing a small reflector according to claim 1, characterized in that, The optical axes of the light emitted from the first lens section and the second lens section are parallel to each other.

Images