Lens device

Abstract

The present invention relates to a lens device, comprising: a lens module having an optical axis along a first direction; a beam splitting module for splitting light from the lens module into at least a first light beam and a second light beam; and an image sensing module, comprising at least two image sensing units corresponding to the light beams, the at least two image sensing units being used to sense the corresponding light beams and being arranged on different sides of the beam splitting module.

Description

Technical Field

[0001] The present invention relates to the field of optics, and more particularly to a lens device. Background Art

[0002] Figure 1 Schematic diagram of a lens device in the prior art. Figure 1 As shown, the lens device 1 includes: a prism module 11, which is used to reflect the light incident from the second direction Y to the first direction X; a lens module 12, which has an optical axis along the first direction X; and an image sensing unit 13. The lens module 12 can be, for example, a telephoto lens module. As the telephoto multiple of the telephoto lens module increases, its effective focal length (EFL) also increases exponentially. Due to the thickness limitation of the lens device 1, when the effective focal length of the lens module 12 increases exponentially while the effective incident area remains unchanged, its aperture becomes smaller, resulting in the light incident on the image sensing unit 13 being unacceptably dark, which will have a significant adverse effect on imaging. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a lens device in view of the above-mentioned defects of the lens device in the prior art, which can ensure the imaging quality when its lens module has a longer focal length or a higher telephoto multiple.

[0004] The technical solution adopted by the present invention to solve the technical problem is: construct a lens device, which comprises:

[0005] A lens module having an optical axis along a first direction;

[0006] a light splitting module, used for splitting the light from the lens module into at least a first light beam and a second light beam, wherein the first and second light beams have different wavelength ranges; and

[0007] The image sensing module comprises at least two image sensing units corresponding to the light beams. The at least two image sensing units are used to sense the corresponding light beams and are arranged on different sides of the light splitting module.

[0008] According to the lens device of the present invention, the light splitting module splits the light from the lens module into at least a first light beam and a second light beam, wherein the first light beam and the second light beam have different wavelength ranges respectively, and the image sensing module includes a first light beam image sensing unit and a second light beam image sensing unit for sensing the first light beam and the second light beam respectively.

[0009] According to the lens device of the present invention, the light splitting module splits the light from the lens module into a first light beam, a second light beam and a third light beam, wherein the first light beam, the second light beam and the third light beam have different wavelength ranges respectively, and the image sensing module further comprises a third light beam image sensing unit for sensing the third light beam;

[0010] The optical splitting module comprises:

[0011] The first prism unit comprises: a first surface for allowing incident light to pass through; a second surface for allowing the first light beam to reflect and the second light beam and the third light beam to pass through, wherein the second surface is coated with a first beam splitting film; and a third surface for allowing the first light beam to emit; and

[0012] The second prism unit adjacent to the first prism unit includes: a fourth surface for the second light beam and the third light beam to pass through, the fourth surface and the second surface are opposite to each other; a fifth surface for reflecting the second light beam and allowing the third light beam to pass through, the fifth surface being coated with a second dichroic film; and a sixth surface for the second light beam to emit.

[0013] According to the lens device of the present invention, the light splitting module further comprises a third prism unit adjacent to the second prism unit, the third prism unit comprising: a seventh surface for the third light beam to pass through, arranged adjacent to the fifth surface; and an eighth surface for the third light beam to emit;

[0014] After the first light beam is reflected by the second surface to the first surface, it is totally reflected on the first surface and emitted from the third surface, and the first dichroic film on the second surface allows light with a wavelength range of 500 to 700 nm to pass through;

[0015] After the second light beam is reflected by the fifth surface to the fourth surface, it is totally reflected on the fourth surface and emitted from the sixth surface. The second dichroic film on the fifth surface allows light with a wavelength range of 400 to 600 nm to pass through.

[0016] According to the lens device of the present invention, the second prism unit reflects and deflects the second light beam, the second light beam image sensing unit is used to sense the corresponding second light beam and is arranged adjacent to the sixth surface, the second light beam image sensing unit and the first light beam image sensing unit are arranged on the same side of the light splitting module, and the third light beam image sensing unit and the first light beam image sensing unit and the second light beam image sensing unit are arranged on different sides of the light splitting module.

[0017] According to the lens device of the present invention, the light splitting module splits the light from the lens module into a first light beam and a second light beam, wherein the first light beam and the second light beam have different wavelength ranges, and the image sensing module includes a first light beam image sensing unit and a second light beam image sensing unit for respectively sensing the first and second light beams.

[0018] According to the lens device of the present invention, the light splitting module comprises: a light incident surface, for light to enter the light splitting module; a light splitting surface, for the first light beam to pass through and the second light beam to reflect; a first emission surface, for the first light beam to emit; and a second emission surface, for the second light beam to emit;

[0019] The image sensing module includes: a first image sensing unit, arranged adjacent to the first exit surface; a second image sensing unit, arranged adjacent to the second exit surface; a first filter arranged between the first image sensing unit and the first exit surface; and a second filter arranged between the second image sensing unit and the second exit surface; the first filter allows light in a wavelength range of 400 to 600 nm to pass; and the second filter allows light in a wavelength range of 500 to 700 nm to pass.

[0020] According to the lens device of the present invention, the lens device further comprises a reflection module for reflecting light incident from the second direction along the first direction to the lens module, and the lens device further comprises an optical path turning module arranged between the lens module and the light splitting module on the optical path.

[0021] According to the lens device of the present invention, the optical path turning module includes a first reflection unit and a second reflection unit that can move in the same direction or in opposite directions along a third direction, the first reflection unit includes a first reflection surface for reflecting light emitted from the lens module to the second reflection unit; the second reflection unit includes a second reflection surface for reflecting light from the first reflection surface to the splitting module, and the third direction is perpendicular to the first and second directions.

[0022] According to the lens device of the present invention, the optical path turning module comprises:

[0023] A first reflecting unit, used for reflecting light from the lens module;

[0024] a reflective prism unit movable along a third direction, for reflecting the light from the first reflective unit, wherein the third direction is perpendicular to the first and second directions; and

[0025] a second reflecting unit, used to reflect the light from the reflecting prism unit;

[0026] The reflecting prism unit comprises a first prism unit surface and a second prism unit surface, wherein the first prism unit surface is used to reflect light entering the reflecting prism unit to the second prism unit surface, and the second prism unit surface is used to reflect light from the first prism unit surface to the second reflecting unit.

[0027] According to the lens device of the present invention, the optical path turning module comprises: a first reflecting unit, a second reflecting unit, and a third reflecting unit that can move in the same direction or in opposite directions along a third direction, wherein the third direction is perpendicular to the first and second directions;

[0028] The first reflecting unit reflects the light emitted from the lens module to the second reflecting unit, the second reflecting unit reflects the light from the first reflecting unit to the third reflecting unit, and the third reflecting unit reflects the light from the second reflecting unit to the light splitting module.

[0029] According to the lens device of the present invention, the optical path turning module comprises: a first reflecting unit and a second reflecting unit that can move in the same direction or in opposite directions along a third direction, and a reflecting prism unit, wherein the third direction is perpendicular to the first and second directions; the first reflecting unit reflects the light emitted from the lens module to the second reflecting unit, and the second reflecting unit reflects the light from the first reflecting unit to the reflecting prism unit;

[0030] The reflective prism unit comprises: a first prism incident surface for light to be incident; a first prism reflection surface for reflecting the incident light; a second prism reflection surface for receiving and reflecting the light reflected from the first prism reflection surface; and a first prism exit surface;

[0031] The optical path turning module further includes a third reflecting unit for reflecting the light emitted from the reflecting prism unit to the light splitting module. The third reflecting unit is arranged behind the reflecting prism unit and before the light splitting module on the optical path.

[0032] According to the lens device of the present invention, the optical path turning module includes a first reflecting prism unit and a second reflecting prism unit both of which can move along a third direction, the third direction is perpendicular to the first and second directions, the first reflecting prism unit includes: a first prism incident surface for light to be incident; a first prism reflecting surface for reflecting the incident light; a second prism reflecting surface for receiving and reflecting the light reflected from the first prism reflecting surface; and a first prism exiting surface;

[0033] The second reflecting prism unit includes: a second prism incident surface receiving light from the first reflecting prism unit; a third prism reflecting surface reflecting the incident light; a fourth prism reflecting surface receiving and reflecting light reflected from the third prism reflecting surface; and a second prism exit surface adjacent to the light splitting module.

[0034] According to the lens device described in the present invention, the optical path turning module includes a first reflection unit, a second reflection unit, a third reflection unit and a fourth reflection unit; the first reflection unit includes a first front reflection surface and a first back reflection surface, and the first front reflection surface and the first back reflection surface are arranged on the front and back surfaces of the first reflection unit; the first front reflection surface is used to reflect the light emitted from the lens module to the second reflection unit, the second reflection unit reflects the light from the first reflection surface to the third reflection unit, the third reflection unit reflects the light from the second reflection unit to the fourth reflection unit, the fourth reflection unit reflects the light from the third reflection unit to the first back reflection surface, and the first back reflection surface reflects the light to the spectroscopic module.

[0035] According to the lens device of the present invention, the optical path turning module comprises:

[0036] The first reflecting prism unit comprises: a first surface for incident light from the lens module; a second surface for reflecting the incident light; and a third surface for reflecting the light reflected from the second surface back to the first surface and causing total reflection on the first surface, and then vertically penetrating the second surface;

[0037] The second reflecting prism unit comprises: a fourth surface, which is opposite to the second surface and is incident on the light; a fifth surface, which totally reflects the incident light; and a sixth surface, which reflects the light reflected from the fifth surface back to the fourth surface and totally reflects the light on the fourth surface, and then vertically penetrates the fifth surface;

[0038] The first reflection unit receives the light from the second reflection prism unit and reflects the light to the light splitting module.

[0039] The lens device of the present invention has the following beneficial effects: incident light is divided into at least a first light beam and a second light beam by using a light splitting module, and images are formed on corresponding at least a first light beam image sensing unit and a second light beam image sensing unit, respectively, thereby effectively increasing the image sensing area and sensing the incoming light to the greatest extent. When the lens module has a longer focal length or a higher telephoto multiple, the image quality can also be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0041] Figure 1 It is a schematic diagram of a lens device in the prior art;

[0042] Figure 2A is a schematic diagram of a first embodiment of a lens device according to the present invention;

[0043] Figure 2B is an optical path diagram of a first embodiment of a lens device according to the present invention;

[0044] Figure 3 is a schematic diagram of a second embodiment of a lens device according to the present invention;

[0045] Figure 4 is a schematic diagram of a third embodiment of a lens device according to the present invention;

[0046] Figure 5A is a schematic diagram of a fourth embodiment of a lens device according to the present invention;

[0047] Figure 5B is another schematic diagram of a fourth embodiment of a lens device according to the present invention;

[0048] Figure 6 is a schematic diagram of a fifth embodiment of a lens device according to the present invention;

[0049] Figure 7 is a schematic diagram of a sixth embodiment of a lens device according to the present invention;

[0050] Figure 8 is a schematic diagram of a seventh embodiment of a lens device according to the present invention;

[0051] Fig. 9 is a schematic diagram of an eighth embodiment of a lens device according to the present invention;

[0052] Fig.10 is a schematic diagram of a ninth embodiment of a lens device according to the present invention;

[0053] Fig.11 is a schematic diagram of a tenth embodiment of a lens device according to the present invention;

[0054] Fig.12 is a schematic diagram of an eleventh embodiment of a lens device according to the present invention;

[0055] Fig.13 is a schematic diagram of a twelfth embodiment of a lens device according to the present invention;

[0056] Fig.14is a schematic diagram of a thirteenth embodiment of a lens device according to the present invention;

[0057] Fig.15 is a schematic diagram of a fourteenth embodiment of a lens device according to the present invention;

[0058] Fig.16 is a schematic diagram of a fifteenth embodiment of a lens device according to the present invention;

[0059] Fig.17 is a schematic diagram of a lens device according to a sixteenth embodiment of the present invention. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0061] Figure 2A is a schematic diagram of a first embodiment of a lens device according to the present invention. Figure 2A As shown, in the first embodiment, the lens device 100 includes: a reflection module 110; a lens module 120 having an optical axis along a first direction X; a light splitting module 130 for splitting the light from the lens module 120 into a first, a second and a third light beam, wherein the first, the second and the third light beam have different wavelength ranges, and can be, for example, one of red, green and blue light; and an image sensing module 140, including a first light beam image sensing unit 141, a second light beam image sensing unit 142 and a third light beam image sensing unit 143 for sensing the first, the second and the third light beams, respectively. The lens device 100 may further include an optical path turning module 150 disposed between the lens module 120 and the light splitting module 130 on the optical path.

[0062] The reflection module 110 may include: a reflection unit, such as a reflection prism or a reflection mirror, for reflecting the light incident from the second direction Y to the first direction X; a reflection unit carrier for fixing the reflection unit; and a reflection unit fixing seat for carrying the reflection unit carrier. The reflection surface of the reflection unit preferably includes a metal layer, such as a metal layer formed by aluminum (Al) or silver (Ag), etc. The manufacturing method of the metal layer is not limited, including but not limited to plating, printing, coating, etc. The metal layer can avoid color deviation and halo phenomenon during imaging, so that the lens device can improve color deviation and effectively concentrate the point light source to obtain good imaging quality.

[0063] The lens module 120 may be, for example, a zoom lens module, which changes its focal length by moving different lenses along the optical axis. The lens module 120 may include: a lens unit fixing seat; a lens unit having an optical axis along a first direction X; a lens unit carrier, which carries the lens unit and is connected to the lens unit fixing seat. In a preferred embodiment, the lens unit carrier can move relative to the lens unit fixing seat in at least one of the first direction X, the second direction Y, and the third direction Z. The third direction Z is perpendicular to the first direction X and the second direction Y. However, the present invention is not limited thereto, and the lens module 120 may also be, for example, a fixed-focus lens module.

[0064] The optical path turning module 150 includes a first reflection unit 151 and a second reflection unit 152. The first reflection unit 151 includes a first reflection surface 151a, which is used to reflect the light emitted from the lens module 120 to the second reflection unit 152, and the first reflection surface 151a may be at an angle of 45 degrees with the first direction X; the second reflection unit 152 includes a second reflection surface 152a, which is used to reflect the light from the first reflection surface 151a to the light splitting module 130, and the second reflection surface 152a may be perpendicular to the first reflection surface 151a. The first reflection surface 151a and the second reflection surface 152a preferably include a metal layer, such as a metal layer formed by aluminum (Al) or silver (Ag), etc. The manufacturing method of the metal layer is not limited, including but not limited to plating, printing, coating, etc. The metal layer can avoid color deviation and halo phenomenon during imaging, so that the lens device can improve color deviation and effectively concentrate the point light source to obtain good imaging quality.

[0065] The light splitting module 130 includes: a first prism unit 131, a second prism unit 132 adjacent to the first prism unit 131, and a third prism unit 133 adjacent to the second prism unit 132. The first prism unit 131 includes: a first surface 131a for allowing incident light to pass through; a second surface 131b for reflecting the first light beam and allowing the second light beam and the third light beam to pass through, the second surface 131b being coated with a first light splitting film; and a third surface 131c, the third surface 131c can be connected between the first surface 131a and the second surface 131b. After the first light beam is reflected by the second surface 131b to the first surface 131a, it is greater than the critical angle, so it is totally reflected on the first surface 131a and emitted from the third surface 131c. The first light beam image sensing unit 141 is disposed adjacent to the third surface 131c, and is used to receive the first light beam emitted from the third surface 131c and form an image. Among them, the first surface 131a is based on Snell's Law. When light waves propagate from one medium to another medium with a different refractive index, refraction will occur. If the light is incident from a medium with a larger refractive index to a medium with a smaller refractive index, its incident angle exceeds the critical angle, the light will no longer be refracted but will be completely reflected back to the original medium, that is, there is no refracted light but only reflected light, forming a total reflection phenomenon (Total Reflection). The critical angle is the minimum incident angle that causes total reflection to occur. Light that meets the total reflection angle will directly undergo total reflection without penetrating.

[0066] The first dichroic film on the second surface 131 b may be a long-wave pass filter film, which can allow light with a wavelength range of, for example, 400 to 600 nm to pass through, that is, allow blue light and green light to pass through and reflect red light.

[0067] The second prism unit 132 includes: a fourth surface 132a for the second and third light beams to pass through, which is opposite to the second surface 131b, and the fourth surface 132a can be parallel to the second surface 131b and an air gap is left between the two, and the air gap can be, for example, 10 μm; a fifth surface 132b for reflecting the second light beam and allowing the third light beam to pass through, and the fifth surface 132b is coated with a second beam splitting film; and a sixth surface 132c, which can be connected between the fourth surface 132a and the fifth surface 132b, and after the second light beam is reflected by the fifth surface 132b to the fourth surface 132a, it is totally reflected on the fourth surface 132a and emitted from the sixth surface 132c. The second light beam image sensing unit 142 is disposed adjacent to the sixth surface 132c, and is used to receive the second light beam emitted from the sixth surface 132c and form an image.

[0068] The second spectroscopic film on the fifth surface 132b may be a bandpass filter film, which allows light with a wavelength range of, for example, 500 to 600 nm to pass through, that is, allows green light to pass through and red light to reflect. It is understood that the wavelength ranges of the long-wave pass filter film and the bandpass filter film may be adjusted according to demand. For example, the long-wave pass filter film may also allow light with a wavelength range of, for example, 500 to 700 nm to pass through, that is, allows red light and green light to pass through and blue light to reflect. The bandpass filter film may also allow light with a wavelength range of, for example, 400 to 600 nm to pass through, that is, allows green light to pass through and red light to reflect. The spectroscopic wavelength ranges on the first spectroscopic film and the second spectroscopic film may change in accordance with demand, and the present invention is not limited thereto.

[0069] The third prism unit 133 includes a seventh surface 133a for the third light beam to pass through, and an eighth surface 133b for the third light beam to be emitted. The seventh surface 133a is disposed adjacent to the fifth surface 132b. The third light beam image sensing unit 143 is disposed adjacent to the eighth surface 133b, and is used to receive the third light beam emitted from the eighth surface 133b and form an image.

[0070] The first prism unit 131 and the second prism unit 132 may be triangular prisms, for example. Those skilled in the art may understand that the third prism unit 133 is not necessary, and the third light beam image sensing unit 143 may be directly disposed adjacent to the fifth surface 132b of the second prism unit 132 to receive the emitted third light beam.

[0071] The lens device 100 further includes an image synthesis module for synthesizing the images formed by the first light beam image sensing unit 141, the second light beam image sensing unit 142, and the third light beam image sensing unit 143. Image synthesis is a prior art and will not be described in detail herein.

[0072] In the present invention, the light is incident on the reflection module 110 along the second direction Y, and then is reflected by the reflection module 110 along the first direction to the lens module 120. The light emitted from the lens module 120 reaches the first reflection unit 151 of the optical path turning module 150 and is reflected, and then reaches the second reflection unit 152 and is reflected into the first surface 131a of the light splitting module 130; then the first light beam is split on the second surface 131b, the first light beam is reflected, and the second light beam and the third light beam pass through. After the first light beam is reflected by the second surface 131b to the first surface 131a, it is totally reflected on the first surface 131a and emitted from the third surface 131c, and finally reaches the first light beam image sensing unit 141. After the second light beam and the third light beam pass through the fourth surface 132a, the second light beam is split on the fifth surface 132b, the second light beam is reflected, and the third light beam passes through. After the second light beam is reflected by the fifth surface 132b to the fourth surface 132a, it is totally reflected on the fourth surface 132a and emitted from the sixth surface 132c, and finally reaches the second light beam image sensing unit 142. After the third light beam passes through the seventh surface 133a, it is emitted from the eighth surface 133b and finally reaches the third light beam image sensing unit 143.

[0073] The present invention utilizes the light splitting module 130 to split the incident light twice, into the first, second and third light beams, and forms images on the first light beam image sensing unit 141, the second light beam image sensing unit 142 and the third light beam image sensing unit 143 respectively, thereby effectively increasing the image sensing area and sensing the incoming light to the greatest extent. When the lens module has a high telephoto multiple, it can compensate for the problem of insufficient incident light brightness and effectively improve the image quality.

[0074] Figure 2B is an optical path diagram of a first embodiment of a lens device according to the present invention; in one implementation, the first reflection unit 151 and the second reflection unit 152 of the optical path turning module 150 can move in the same direction or in opposite directions along a third direction Z, thereby changing the optical path between the lens module 120 and the image sensing module 140, and realizing auto focus (Auto Focus) and vibration compensation (Optical Image Stabilization) of the lens device 100. Figure 2BThe figure shows a schematic diagram of the optical path of the first reflection unit 151 and the second reflection unit 152 moving away from each other along the third direction Z. The solid line shows the initial positions of the first reflection unit 151 and the second reflection unit 152; the dotted line shows the positions of the first reflection unit 151 and the second reflection unit 152 after they move. The first reflection unit 151 moves a distance L1 in the third direction Z, and the second reflection unit 152 moves a distance L2 in the opposite direction in the third direction Z, so that the two move away from each other. At this time, the optical path between the lens module 120 and the image sensing module 140 increases by ΔS=L1+L2, thereby realizing the automatic focus of the lens device 100. L1 and L2 are absolute values.

[0075] Those skilled in the art can understand that when the values ​​of the reverse movement of L1 and L2 are equal, the light will still move along the path that coincides with the path before the movement after being reflected by the second reflection unit 152. At this time, the imaging position of the light on the image sensing module 140 will not change, and the lens device 100 only realizes automatic focus. When the values ​​of the reverse movement of L1 and L2 are not equal, the light will deviate from the path before the movement after being reflected by the second reflection unit 152. At this time, the imaging position of the light on the image sensing module 140 will deviate, and the distance of deviation relative to the distance before the movement is S=|L1-L2|. Thus, vibration compensation of the lens device 100 in the third direction Z is realized.

[0076] When the first reflection unit 151 and the second reflection unit 152 move in the same direction in the third direction Z, vibration compensation of the lens device 100 in the third direction Z can be achieved.

[0077] However, the present invention is not limited to the above automatic focusing method. In an alternative embodiment, the lens module further includes a driving member for driving the lens unit carrier to move relative to the lens unit fixing seat in the first direction X to achieve automatic focusing.

[0078] In this embodiment, there are several implementations to achieve vibration compensation of the lens device in the second direction Y and the third direction Z, and the present invention is not limited thereto.

[0079] In an optional embodiment, the lens module further includes a driving member (not shown) for driving the lens unit carrier to move relative to the lens unit fixing seat in the second direction Y, thereby achieving vibration compensation in the second direction Y. The lens device 100 further includes a driving member for driving the light splitting module 130 and the image sensing module 140 to move along the third direction Z, thereby achieving vibration compensation in the third direction Z.

[0080] In another optional embodiment, the reflective unit carrier is connected to the reflective unit fixing seat via a rotating shaft along the third direction Z, and the lens device 100 further includes a driving member for driving the reflective unit carrier to rotate along the third direction Z, thereby achieving vibration compensation in the second direction Y. The lens device 100 further includes a driving member for driving the optical path turning module 150 to translate along the first direction X, thereby achieving automatic focusing.

[0081] Figure 3 is a schematic diagram of a second embodiment of a lens device according to the present invention. For the sake of brevity, the same or similar parts as those of the first embodiment will not be described in detail. Figure 3 As shown, in the second embodiment, the lens device 100 includes: a reflection module 110; a lens module 120; a light splitting module 130; and an image sensing module 140. The lens device 100 also includes an optical path turning module 150 disposed between the lens module 120 and the light splitting module 130 on the optical path. The difference between the second embodiment and the first embodiment lies in the optical path turning module 150 and the optical path change caused thereby.

[0082] The optical path turning module 150 includes a first reflection unit 153 , a reflection prism unit 154 , and a second reflection unit 155 .

[0083] The first reflection unit 153 includes a front reflection surface 153a, which is used to reflect the light emitted from the lens module 120 to the reflection prism unit 154. The front reflection surface 153a can be at an angle of 45 degrees with the first direction X. The second reflection unit 155 includes a rear reflection surface 155a, which can be perpendicular to the front reflection surface 153a. The front and back here are relative to the order of arrival of the light on the optical path and should not be regarded as a limitation of the present invention. The reflection prism unit 154 includes a first prism unit surface 154a and a second prism unit surface 154b, the first prism unit surface 154a is used to reflect the light entering the reflection prism unit 154 to the second prism unit surface 154b, and the second prism unit surface 154b is used to reflect the light from the first prism unit surface 154a to the rear reflection surface 155a. The rear reflection surface 155a is used to reflect the light to the light splitting module 130. It should be noted that the first reflective unit 153 and the second reflective unit 155 can be an integrally formed single component.

[0084] In this embodiment, the reflective prism unit 154 can move along the third direction Z, thereby changing the optical path between the lens module 120 and the image sensing module 140, and realizing the automatic focusing of the lens device 100. When the reflective prism unit 154 moves L3 along the third direction Z and away from the first reflective unit 153, the optical path between the lens module 120 and the image sensing module 140 will increase by ΔS=2xL3. Wherein L3 is an absolute value. In an optional implementation, the reflective prism unit 154 can also rotate along the second direction Y as the axis to realize vibration compensation of the lens device 100.

[0085] However, the present invention is not limited to the above automatic focusing method. In an alternative embodiment, the lens module further includes a driving member for driving the lens unit carrier to move relative to the lens unit fixing seat in the first direction X to achieve automatic focusing.

[0086] In this embodiment, there may be several implementations to achieve vibration compensation of the lens device in the second direction Y and the third direction, and the present invention is not limited thereto.

[0087] In an optional embodiment, the reflection unit carrier is connected to the reflection unit fixing seat via a rotation axis along the third direction Z, and the lens device 100 further includes a driving member for driving the reflection unit carrier to rotate along the third direction Z, thereby achieving vibration compensation in the second direction Y. The lens device 100 further includes a driving member for driving the reflection prism unit 154 of the optical path turning module 150, or driving the first reflection unit 153 and the second reflection unit 155 of the optical path turning module 150 to move relative to the lens module 120 along the first direction X, thereby achieving vibration compensation in the third direction Z.

[0088] Those skilled in the art will appreciate that the two different optical path turning modules 150 in the first and second embodiments are not limited to the embodiments to which they are applied, but can be applied to all embodiments having the optical path turning module 150 .

[0089] Figure 4 FIG. 2 is a schematic diagram of a third embodiment of a lens device according to the present invention; for the sake of brevity, the same or similar parts as those of the second embodiment are not described in detail. Figure 4 As shown, in the third embodiment, the lens device 100 includes: a reflection module 110; a lens module 120; a light splitting module 130; and an image sensing module 140. The lens device 100 also includes an optical path turning module 150 disposed between the lens module 120 and the light splitting module 130 on the optical path. The difference between the third embodiment and the second embodiment lies in the structure of the light splitting module 130, the arrangement of the image sensing module 140, and the resulting optical path changes.

[0090] like Figure 4As shown, the light splitting module 130 includes: a first prism unit 134, a second prism unit 135 adjacent to the first prism unit 134, and a third prism unit 136 adjacent to the second prism unit 135. The first prism unit 134 includes: a first surface 134a for allowing incident light to pass through; a second surface 134b for reflecting the first light beam and allowing the second and third light beams to pass through, the second surface 134b being coated with a first light splitting film, and the incident light is first split on the second surface 134b; and a third surface 134c, from which the first light beam is emitted. The first light beam image sensing unit 141 is disposed adjacent to the third surface 134c, and is used to receive the first light beam emitted from the third surface 134c and form an image.

[0091] The first dichroic film on the second surface 134 b may be a long-wave pass filter film, which can allow light with a wavelength range of, for example, 500 to 700 nm to pass through, that is, allow green light and red light to pass through and reflect blue light.

[0092] The second prism unit 135 includes: a fourth surface 135a for the second light beam and the third light beam to pass through, which is opposite to the second surface 134b, and the fourth surface 135a can be parallel to the second surface 134b and an air gap is left between the two, and the air gap can be, for example, 10 μm, or can be a gapless bonding method; a fifth surface 135b for reflecting the second light beam and allowing the third light beam to pass through, and the fifth surface 135b is coated with a second beam splitting film, and the second beam splitting is performed on the fifth surface 135b; and a sixth surface 135c, from which the second light beam is emitted. The second light beam image sensing unit 142 is disposed adjacent to the sixth surface 135c, and is used to receive the second light beam emitted from the sixth surface 135c and form an image.

[0093] The second spectroscopic film on the fifth surface 135b may be a bandpass filter film, which can allow light with a wavelength range of 600 to 700 nm to pass, that is, red light to pass. Similarly, it can be understood that the spectroscopic wavelength ranges on the first spectroscopic film and the second spectroscopic film can be changed according to the needs, which has been described in detail in the first embodiment and will not be repeated here.

[0094] The third prism unit 136 includes: a seventh surface 136a for the third light beam to pass through, and an eighth surface 136b for the third light beam to be emitted. The seventh surface 136a is disposed adjacent to the fifth surface 135b. The third light beam image sensing unit 143 is disposed adjacent to the eighth surface 136b, and is used to receive the third light beam emitted from the eighth surface 136b and form an image. It can be understood by those skilled in the art that the third prism unit 133 is not necessary.

[0095] That is, in the third embodiment, the separated first light beam is no longer totally reflected in the first prism unit 134 but is directly emitted, and the separated second light beam is no longer totally reflected in the second prism unit 135 but is directly emitted. The incident light is split twice by the light splitting module 130 into the first, second and third light beams, and images are formed on the first light beam image sensing unit 141, the second light beam image sensing unit 142 and the third light beam image sensing unit 143 respectively.

[0096] exist Figure 4 , the second surface 134b and the fifth surface 135b are at an angle to each other, and the angle may be, for example, 90 degrees, so that the first light beam and the second light beam are reflected in opposite directions. The first light beam image sensing unit 141 and the second light beam image sensing unit 142 are arranged on different sides of the spectroscopic module 130, and the third light beam image sensing unit 143 and the first light beam image sensing unit 141 and the second light beam image sensing unit 142 are arranged on different sides of the spectroscopic module 130, but the present invention is not limited thereto. In other embodiments, the second surface 134b and the fifth surface 135b may be parallel to each other, so that the first light beam and the second light beam are reflected in the same direction. At this time, the first light beam image sensing unit 141 and the second light beam image sensing unit 142 are arranged on the same side of the spectroscopic module 130, and the third light beam image sensing unit 143 still maintains being arranged on a different side of the spectroscopic module 130 from the first light beam image sensing unit 141 and the second light beam image sensing unit 142.

[0097] In this embodiment, the reflective prism unit 154 can move along the third direction Z, thereby changing the optical distance between the lens module 120 and the image sensor module 140 to achieve automatic focusing of the lens device 100 .

[0098] However, the present invention is not limited to the above automatic focusing method. In an alternative embodiment, the lens module further includes a driving member for driving the lens unit carrier to move relative to the lens unit fixing seat in the first direction X to achieve automatic focusing.

[0099] In this embodiment, there are several implementations to achieve vibration compensation of the lens device in the second direction Y and the third direction Z, and the present invention is not limited thereto.

[0100] In an optional embodiment, the reflection unit carrier is connected to the reflection unit fixing seat via a rotation axis along the third direction Z, and the lens device 100 further includes a driving member for driving the reflection unit carrier to rotate along the third direction Z, thereby achieving vibration compensation in the second direction Y. The lens device 100 further includes a driving member for driving the reflection module 110 to move relative to the lens module 120 along the third direction Z, thereby achieving vibration compensation in the third direction Z.

[0101] Figure 5A is a schematic diagram of a fourth embodiment of a lens device according to the present invention. For the sake of brevity, the same or similar parts as those of the third embodiment will not be described in detail. Figure 5A As shown, in the fourth embodiment, the lens device 100 comprises: a reflection module 110; a lens module 120; a light splitting module 130; and an image sensing module 140. Different from the fourth embodiment, in this embodiment, no light path turning module is provided.

[0102] In this embodiment, the lens module further comprises a driving member for driving the lens unit carrier to move in a first direction X relative to the lens unit fixing seat to achieve automatic focusing.

[0103] In this embodiment, there may be several implementations to achieve vibration compensation of the lens device in the second direction Y and the third direction Z, and the present invention is not limited thereto.

[0104] In an optional embodiment, the reflection unit carrier is connected to the reflection unit fixing seat via a rotation axis along the third direction Z, and the lens module further includes a driving member for driving the reflection unit carrier to rotate along the third direction Z, thereby achieving vibration compensation in the second direction Y. The lens module further includes a driving member for driving the reflection module 110 to move relative to the lens module 120 along the third direction Z, thereby achieving vibration compensation in the third direction Z.

[0105] Figure 5B 2 is another schematic diagram of a fourth embodiment of a lens device according to the present invention; Figure 5B As shown, the lens module 120 can be, for example, a zoom lens module, which changes its focal length by moving different lenses along the optical axis. The figure shows a process in which one lens group moves along the optical axis to achieve zooming. The solid line shows the position before zooming, and the dotted line shows the position after zooming, so as to achieve the switching of magnification. Figure 5B The zoom conditions shown are applicable to all embodiments.

[0106] Figure 6 is a schematic diagram of a fifth embodiment of a lens device according to the present invention. For the sake of brevity, the same or similar parts as those of the fourth embodiment are not described in detail. Figure 6 As shown, in the fifth embodiment, the lens device 100 includes: a reflection module 110; a lens module 120; a light splitting module 130; and an image sensing module 140. The fifth embodiment is different from the fourth embodiment in the locations of the light splitting module 130 and the image sensing units of the image sensing module 140.

[0107] exist Figure 6In the embodiment, the second surface 134b, the fourth surface 135a and the fifth surface 135b are parallel to each other. The first light beam and the second light beam are reflected in the same direction. The first light beam image sensing unit 141 and the second light beam image sensing unit 142 are disposed on the same side of the light splitting module 130.

[0108] Figure 7 is a schematic diagram of a sixth embodiment of a lens device according to the present invention. For the sake of brevity, parts identical or similar to those of the fourth embodiment will not be described in detail. Figure 7 As shown, in the sixth embodiment, the lens device 100 includes: a reflection module 110; a lens module 120; a light splitting module 130; and an image sensing module 140. In this embodiment, no light path turning module is provided. The sixth embodiment differs from the fourth embodiment in the light splitting module 130.

[0109] The light splitting module 130 includes: a light incident surface 137 for light to enter the light splitting module 130; a light splitting surface 138, on which a semi-reflective and semi-transmissive film is coated, which splits the incident light into a first light beam and a second light beam, wherein the first light beam passes through and the second light beam is reflected; a first exit surface 139a, from which the first light beam is emitted; and a second exit surface 139b, from which the second light beam is emitted. The image sensing module 140 includes: a first image sensing unit 144, which is disposed adjacent to the first exit surface 139a; a second image sensing unit 145, which is disposed adjacent to the second exit surface 139b; a first filter disposed between the first image sensing unit 144 and the first exit surface 139a, which is used to filter out the red light in the first light beam by utilizing the different wavelength bands of different colors of light; and a second filter disposed between the second image sensing unit 145 and the second exit surface 139b, which is used to filter out the blue light in the second light beam by utilizing the different wavelength bands of different colors of light.

[0110] The light splitting surface 138 may be coated with, for example, a dielectric light splitting film. The first filter may be coated with, for example, a short-wave pass filter film, which allows, for example, light in the wavelength range of 400 to 600 nm to pass, that is, allows blue light and green light to pass, and reflects red light. The second filter may be coated with, for example, a long-wave pass filter film, which allows, for example, light in the wavelength range of 500 to 700 nm to pass, that is, allows green light and red light to pass, and reflects blue light.

[0111] After the red light is filtered out from the first light beam, only GB color (blue, green) light remains. After the red light is filtered out from the second light beam, only GR (green, red) light remains. The image obtained by the first image sensing unit 145 sensing the GB color light and the image obtained by the second image sensing unit 145 sensing the GR light are combined to obtain the final image. The technology of synthesizing images using GB and GR light can refer to the Bayer array.

[0112] This embodiment uses the spectroscopic module 130 to split the incident light into a first light beam and a second light beam, and after filtering, images are formed on the first image sensing unit 144 and the second image sensing unit 145, respectively, which effectively increases the image sensing area and can sense the incoming light to the greatest extent. When the lens module has a high telephoto multiple, it can make up for the problem of insufficient incident light brightness and effectively improve the image quality.

[0113] In this embodiment, the lens module further comprises a driving member for driving the lens unit carrier to move in a first direction X relative to the lens unit fixing seat to achieve automatic focusing.

[0114] In this embodiment, there are several implementations to achieve vibration compensation of the lens device in the second direction Y and the third direction Z, and the present invention is not limited thereto.

[0115] In an optional embodiment, the reflection unit carrier is connected to the reflection unit fixing seat via a rotation axis along the third direction Z, and the lens module further includes a driving member for driving the reflection unit carrier to rotate along the third direction Z, thereby achieving vibration compensation in the second direction Y. The lens module further includes a driving member for driving the reflection module 110 to move relative to the lens module 120 along the third direction Z, thereby achieving vibration compensation in the third direction.

[0116] Figure 8 is a schematic diagram of a seventh embodiment of a lens device according to the present invention. For the sake of brevity, the same or similar parts as those of the sixth embodiment will not be described in detail. Figure 8 As shown, in the seventh embodiment, the lens device 100 includes: a reflection module 110; a lens module 120; a light splitting module 130; and an image sensing module 140. Different from the fifth embodiment, in this embodiment, an optical path turning module 150 is provided. The optical path turning module 150 is completely the same as the optical path turning module of the second embodiment. No further description is given here.

[0117] In this embodiment, the reflective prism unit 154 can move along the third direction Z, thereby changing the optical distance between the lens module 120 and the image sensor module 140 to achieve automatic focusing of the lens device 100 .

[0118] However, the present invention is not limited to the above automatic focusing method. In an alternative embodiment, the lens module further includes a driving member for driving the lens unit carrier to move relative to the lens unit fixing seat in the first direction X to achieve automatic focusing.

[0119] In this embodiment, there are several implementations to achieve vibration compensation of the lens device in the second direction Y and the third direction Z, and the present invention is not limited thereto.

[0120] In an optional embodiment, the reflection unit carrier is connected to the reflection unit fixing seat via a rotation axis along the third direction Z, and the lens device 100 further includes a driving member for driving the reflection unit carrier to rotate along the third direction Z, thereby achieving vibration compensation in the second direction Y. The lens device 100 further includes a driving member for driving the reflection prism unit 154 of the optical path turning module 150, or driving the first reflection unit 153 and the second reflection unit 155 of the optical path turning module 150 to move relative to the lens module 120 along the first direction X, thereby achieving vibration compensation in the third direction Z.

[0121] Fig. 9 is a schematic diagram of an eighth embodiment of a lens device according to the present invention. This embodiment is an improvement made on the basis of the sixth embodiment. For the sake of brevity, the same or similar parts as those of the sixth embodiment will not be described in detail. Fig. 9 As shown, in the eighth embodiment, the lens device 100 includes: a reflection module 110; a lens module 120; a light splitting module 130; and an image sensing module 140. Different from the sixth embodiment, in this embodiment, an optical path turning module 150 is further provided. The optical path turning module 150 is completely the same as the optical path turning module of the first embodiment. No further description is given here.

[0122] In this embodiment, the first reflection unit 151 and the second reflection unit 152 can move along the third direction Z, thereby changing the optical path between the lens module 120 and the image sensing module 140 to achieve automatic focusing of the lens device 100 and vibration compensation in the third direction Z.

[0123] However, the present invention is not limited to the above automatic focusing method. In an alternative embodiment, the lens module further includes a driving member for driving the lens unit carrier to move relative to the lens unit fixing seat in the first direction X to achieve automatic focusing.

[0124] In this embodiment, there are several implementations to achieve vibration compensation of the lens device in the second direction Y and the third direction Z, and the present invention is not limited thereto.

[0125] In an optional embodiment, the reflection unit carrier is connected to the reflection unit fixing seat via a rotation axis along the third direction Z, and the lens device 100 further includes a driving member for driving the reflection unit carrier to rotate along the third direction Z, thereby achieving vibration compensation in the second direction Y. The lens device 100 further includes a driving member for driving the optical path turning module 150 to move relative to the lens module 120 along the first direction X, thereby achieving automatic focusing.

[0126] Fig.10is a schematic diagram of a ninth embodiment of a lens device according to the present invention. This embodiment is an improvement made on the basis of the eighth embodiment. For the sake of brevity, the same or similar parts as the eighth embodiment are not described in detail. Fig.10 As shown, in the ninth embodiment, the lens device 100 comprises: a reflection module 110; a lens module 120; an optical path turning module 150; a light splitting module 130; and an image sensing module 140. Different from the eighth embodiment, in this embodiment, the structure of the optical path turning module 150 is changed.

[0127] The optical path turning module 150 includes a first reflecting unit 151, a second reflecting unit 152 and a third reflecting unit 156. The first reflecting unit 151 includes a first reflecting surface 151a, which is used to reflect the light emitted from the lens module 120 to the second reflecting unit 152, and the first reflecting surface 151a may be at an angle of 45 degrees with the first direction X; the second reflecting unit 152 includes a second reflecting surface 152a, which is used to reflect the light from the first reflecting surface 151a to the third reflecting unit 156, and the second reflecting surface 152a may be perpendicular to the first reflecting surface 151a; the third reflecting unit 156 includes a third reflecting surface 156a, which may be parallel to the second reflecting surface 152a, and is used to reflect the light from the second reflecting surface 152a to the light splitting module 130.

[0128] In this embodiment, the first reflection unit 151 and the second reflection unit 152 can move along the third direction Z and move in the same direction or opposite directions to each other, thereby changing the optical path between the lens module 120 and the image sensing module 140 to achieve automatic focusing and vibration compensation of the lens device 100.

[0129] However, the present invention is not limited to the above automatic focusing method. In an alternative embodiment, the lens module further includes a driving member for driving the lens unit carrier to move relative to the lens unit fixing seat in the first direction X to achieve automatic focusing.

[0130] In this embodiment, there are several implementations to achieve vibration compensation of the lens device in the second direction Y and the third direction Z, and the present invention is not limited thereto.

[0131] In an optional embodiment, the reflection unit carrier is connected to the reflection unit fixing seat via a rotation axis along the third direction Z, and the lens device 100 further includes a driving member for driving the reflection unit carrier to rotate along the third direction Z, thereby achieving vibration compensation in the second direction Y. The lens device 100 further includes a driving member for driving the optical path turning module 150 to move relative to the lens module 120 along the first direction X, thereby achieving automatic focusing.

[0132] Fig.111 is a schematic diagram of a tenth embodiment of a lens device according to the present invention. This embodiment is an improvement made on the basis of the eighth embodiment. For the sake of brevity, the same or similar parts as the eighth embodiment are not described in detail. Fig.11 As shown, in the tenth embodiment, the lens device 100 comprises: a reflection module 110, a lens module 120, an optical path turning module 150, a light splitting module 130, and an image sensing module 140. Different from the eighth embodiment, the structure of the optical path turning module 150 is changed.

[0133] The optical path turning module 150 includes a first reflecting unit 151 , a second reflecting unit 152 , and a reflecting prism unit 157 . The reflecting prism unit 157 is disposed after the second reflecting unit 152 and before the light splitting module 130 on the optical path, that is, between the second reflecting unit 152 and the light splitting module 130 .

[0134] The reflective prism unit 157 includes: a first prism incident surface 157a, which may be perpendicular to the first direction X; a first prism reflection surface 157c that reflects light; a second prism reflection surface 157b that receives and reflects the light reflected by the first prism reflection surface 157c; and a first prism output surface 157d, which may be parallel to the first direction X. The first prism output surface 157d is adjacent to the light incident surface 137 of the light splitting module 130, and the two may be parallel to each other.

[0135] The first prism incident surface 157a may be coated with a fully dielectric high-transmittance film, which allows more than 98% of light to pass through. The second prism reflection surface 157b and the first prism reflection surface 157c may be coated with a high-reflection film.

[0136] The light is incident on the reflection module 110 along the second direction Y, and then is reflected by the reflection module 110 along the first direction to the lens module 120. The light emitted from the lens module 120 reaches the first reflection unit 151 of the optical path turning module 150 and is reflected, and then reaches the second reflection unit 152 and is reflected into the first prism incident surface 157a of the reflection prism unit 157, and then is reflected on the first prism reflection surface 157c, and reaches the second prism reflection surface 157b and is reflected again, and then is emitted from the first prism exit surface 157d and enters the spectrometer module 130 for spectrometry.

[0137] The reflective prism unit 157 may be, for example, a pentagonal prism. The advantage of using a pentagonal prism is that a longer focal length and a higher magnification optical zoom can be achieved within a limited space. Using a pentagonal prism can compress a long focal length within a limited space.

[0138] In this embodiment, the first reflection unit 151 and the second reflection unit 152 can move along the third direction Z and move in the same direction or opposite directions to each other, thereby changing the optical path between the lens module 120 and the image sensing module 140 to achieve automatic focusing of the lens device 100 and vibration compensation in the first direction X.

[0139] However, the present invention is not limited to the above automatic focusing method. In an alternative embodiment, the lens module further includes a driving member for driving the lens unit carrier to move relative to the lens unit fixing seat in the first direction X to achieve automatic focusing.

[0140] In this embodiment, there are several implementations to achieve vibration compensation of the lens device in the second direction Y and the third direction Z, and the present invention is not limited thereto.

[0141] In an optional embodiment, the reflection unit carrier is connected to the reflection unit fixing seat via a rotation axis along the third direction Z, and the lens device 100 further includes a driving member for driving the reflection unit carrier to rotate along the third direction Z, thereby achieving vibration compensation in the second direction Y. The lens device 100 further includes a driving member for driving the optical path turning module 150 to move relative to the lens module 120 along the first direction X, thereby achieving automatic focusing.

[0142] Fig.12 1 is a schematic diagram of an eleventh embodiment of a lens device according to the present invention. This embodiment is an improvement made on the basis of the seventh and tenth embodiments. For the sake of brevity, the same or similar parts as those of the seventh and tenth embodiments are not described in detail. Fig.12 As shown, in the eleventh embodiment, the lens device 100 comprises: a reflection module 110; a lens module 120; an optical path turning module 150; a light splitting module 130; and an image sensing module 140. Different from the seventh and tenth embodiments, the structure of the optical path turning module 150 is changed.

[0143] The optical path turning module 150 includes a first reflecting prism unit 158 ​​and a second reflecting prism unit 159 .

[0144] The first reflecting prism unit 158 ​​includes: a first prism incident surface 158a, which can be perpendicular to the first direction X; a first prism reflecting surface 158b that reflects light; a second prism reflecting surface 158c that receives the light reflected by the first prism reflecting surface 158b and reflects it; and a first prism exit surface 158d, which can be parallel to the first direction X.

[0145] The first prism incident surface 158a may be coated with a fully dielectric high-transmittance film, which allows more than 98% of light to pass through. The first prism reflection surface 158b and the second prism reflection surface 158c may be coated with a high-reflection film.

[0146] The second reflective prism unit 159 includes: a second prism incident surface 159a, which can be parallel to the first direction X; a third prism reflection surface 159c for reflecting light; a fourth prism reflection surface 159b for receiving and reflecting the light reflected by the third prism reflection surface 159c; and a second prism output surface 159d, which can be perpendicular to the first direction X. The second prism output surface 159d is adjacent to the light incident surface 137 of the light splitting module 130, and the two can be parallel to each other.

[0147] The second prism incident surface 159a may be coated with a fully dielectric high-transmittance film, which allows more than 98% of light to pass through. The third prism reflection surface 159c and the fourth prism reflection surface 159b may be coated with a high-reflection film.

[0148] The light is incident on the reflection module 110 along the second direction Y, and then is reflected by the reflection module 110 along the first direction to the lens module 120. The light emitted from the lens module 120 enters the first prism incident surface 158a of the first reflection prism unit 158, and then is reflected on the first prism reflection surface 158b, reaches the second prism reflection surface 158c and is reflected again, and then is emitted from the first prism exit surface 158d. The light then enters the second prism incident surface 159a of the second reflection prism unit 159, and then is reflected on the third prism reflection surface 159c, reaches the fourth prism reflection surface 159b and is reflected again, and then is emitted from the second prism exit surface 159d and enters the light splitting module 130 for light splitting.

[0149] In this embodiment, the first prism reflection surface 158b forms an obtuse angle with the first direction X, and the second reflection prism unit 159 is located in the negative direction of the third direction Z relative to the first reflection prism unit 158, that is, the first reflection prism unit 158 ​​and the second reflection prism unit 159 are arranged along the third direction Z.

[0150] The first reflecting prism unit 158 ​​and the second reflecting prism unit 159 may be, for example, penta-prisms. The advantage of using two penta-prisms is that the focal length is further increased and a higher magnification optical zoom is performed.

[0151] In this embodiment, the first reflective prism unit 158 ​​and the second reflective prism unit 159 can move in the same direction or in opposite directions along the third direction Z, thereby changing the optical path between the lens module 120 and the image sensing module 140 to achieve automatic focusing of the lens device 100 and vibration compensation in the third direction Z.

[0152] However, the present invention is not limited to the above automatic focusing method. In an alternative embodiment, the lens module further includes a driving member for driving the lens unit carrier to move relative to the lens unit fixing seat in the first direction X to achieve automatic focusing.

[0153] In this embodiment, there are several implementations to achieve vibration compensation of the lens device in the second direction Y and the third direction Z, and the present invention is not limited thereto.

[0154] In an optional embodiment, the reflection unit carrier is connected to the reflection unit fixing seat via a rotation axis along the third direction Z, and the lens device 100 further includes a driving member for driving the reflection unit carrier to rotate along the third direction Z, thereby achieving vibration compensation in the second direction Y. The lens device 100 further includes a driving member for driving the optical path turning module 150 to move relative to the lens module 120 along the first direction X, thereby achieving automatic focusing.

[0155] Fig.13 1 is a schematic diagram of a twelfth embodiment of the lens device 100 according to the present invention. This embodiment is an improvement made on the basis of the eleventh embodiment. For the sake of brevity, the same or similar parts as those of the eleventh embodiment are not repeated.

[0156] Different from the eleventh embodiment, in this embodiment, the first prism reflection surface 158 b forms an acute angle with the first direction X, and the second reflection prism unit 159 is located in the positive direction of the third direction Z relative to the first reflection prism unit 158 ​​.

[0157] Fig.14 1 is a schematic diagram of a thirteenth embodiment of a lens device 100 according to the present invention; this embodiment is an improvement made on the basis of the ninth embodiment. For the sake of brevity, the same or similar parts as those of the ninth embodiment will not be described in detail. Fig.14 As shown, in the thirteenth embodiment, the lens device 100 includes: a reflection module 110; a lens module 120; an optical path turning module 150; a light splitting module 130; and an image sensing module 140. Different from the ninth embodiment, in this embodiment, the structure of the optical path turning module 150 is changed.

[0158] In this embodiment, the third reflective surface 156a may be perpendicular to the second reflective surface 152a, and is used to reflect the light from the second reflective surface 152a to the light splitting module 130. This embodiment can make the structure of the lens device 100 more compact and applicable to more limited space.

[0159] Fig.1514 is a schematic diagram of a lens device 100 according to the present invention; this embodiment is an improvement made on the basis of the thirteenth embodiment. For the sake of brevity, the same or similar parts as the thirteenth embodiment are not described in detail. Fig.15 As shown, in the fourteenth embodiment, the lens device 100 includes: a reflection module 110; a lens module 120; an optical path turning module 150; a light splitting module 130; and an image sensing module 140. Different from the thirteenth embodiment, in this embodiment, the structure of the optical path turning module 150 is changed.

[0160] The optical path turning module 150 includes a first reflection unit 1510, a second reflection unit 1511, a third reflection unit 1512 and a fourth reflection unit 1513. The first reflection unit 1510 includes a first front reflection surface 1510a and a first back reflection surface 1510b, and the first front reflection surface 1510a and the first back reflection surface 1510b are arranged on the front and back opposite sides of the first reflection unit 1510. The first front reflection surface 1510a is used to reflect the light emitted from the lens module 120 to the second reflection unit 1511, and the first front reflection surface 1510a may be at an angle of 45 degrees with the first direction X; the second reflection unit 1511 includes a second reflection surface 1511a, which is used to reflect the light from the first front reflection surface 1510a to the third reflection unit 1512, and the second reflection surface 1511a may be parallel to the first front reflection surface 1510a; the third reflection unit 1512 includes a third reflection surface 1512a, and the third reflection surface 1512b is parallel to the first front reflection surface 1510a. 512a can be perpendicular to the second reflecting surface 1511a, and is used to reflect the light from the second reflecting surface 1511a to the fourth reflecting unit 1513; the fourth reflecting unit 1513 includes a fourth reflecting surface 1513a, and the fourth reflecting surface 1513a can be perpendicular to the third reflecting surface 1512a, and is used to reflect the light from the third reflecting surface 1512a to the first back reflecting surface 1510b, the first back reflecting surface 1510b is parallel to the fourth reflecting surface 1513a, and the first back reflecting surface 1510b reflects the light to the splitting module 130.

[0161] In this embodiment, the third reflection unit 1512 and the fourth reflection unit 1513 can move in the same direction or in opposite directions along the third direction Z, thereby changing the optical path between the lens module 120 and the image sensing module 140 to achieve automatic focusing of the lens device 100 and vibration compensation in the first direction X.

[0162] The present invention is not limited thereto, the second reflection unit 1511 and the third reflection unit 1512 can move in the same direction or in opposite directions along the first direction X, thereby changing the optical path between the lens module 120 and the image sensor module 140 to achieve automatic focusing of the lens device 100 and vibration compensation in the first direction X.

[0163] However, the present invention is not limited to the above automatic focusing method. In an alternative embodiment, the lens module further includes a driving member for driving the lens unit carrier to move relative to the lens unit fixing seat in the first direction X to achieve automatic focusing.

[0164] In this embodiment, there are several implementations to achieve vibration compensation of the lens device in the second direction Y and the third direction Z, and the present invention is not limited thereto.

[0165] In an optional embodiment, the reflection unit carrier is connected to the reflection unit fixing seat via a rotation axis along the third direction Z, and the lens device 100 further includes a driving member for driving the reflection unit carrier to rotate along the third direction Z, thereby achieving vibration compensation in the second direction Y. The lens device 100 further includes a driving member for driving the optical path turning module 150 to move relative to the lens module 120 along the first direction X, thereby achieving automatic focusing.

[0166] Fig.16 FIG. 15 is a schematic diagram of a fifteenth embodiment of a lens device according to the present invention. This embodiment is an improvement made on the basis of the eighth embodiment. For the sake of brevity, the same or similar parts as the eighth embodiment are not described in detail. Fig.16 As shown, in the fifteenth embodiment, the lens device 100 includes: a reflection module 110; a lens module 120; an optical path turning module 150; a light splitting module 130; and an image sensing module 140. Different from the eighth embodiment, in this embodiment, the structure of the optical path turning module 150 is changed.

[0167] The optical path turning module 150 includes a first reflecting prism unit 1514, a second reflecting prism unit 1515 and a first reflecting unit 1516, wherein the first reflecting prism unit 1514 can be a triangular prism, including: a first surface 1514a for incident light from the lens module 120, the first surface 1514a can be perpendicular to the first direction X; a second surface 1514c, which reflects the incident light, the second surface 1514c can be at an angle of 135 degrees to the first direction; a third surface 1514b, which reflects the light reflected from the second surface 1514c back to the first surface 1514a, the third surface 1514b can be at an angle of 30 degrees to the first direction; wherein the first surface 1514a, the second surface 1514c, and the third surface 1514b form an acute triangle, the light reflected from the third surface 1514b returns to the first surface 1514a and undergoes total reflection, and then vertically incidents on the second surface 1514c and penetrates the second surface 1514c.

[0168] The second reflecting prism unit 1515 may be a triangular prism, including: a fourth surface 1515a, which is opposite to the second surface 1514c, and an air gap may be left between the two or they may fit together, and the light penetrating the second surface 1514c is incident from the fourth surface 1515a; a fifth surface 1515b, which totally reflects the incident light, and the fifth surface may be parallel to the first direction X; a sixth surface 1515c, which reflects the light reflected from the fifth surface 1515b back to the fourth surface 1515a, and then the light is totally reflected on the fourth surface 1515a, vertically incident on the fifth surface 1515b and emitted.

[0169] The first reflection unit 1516 receives the light from the second reflection prism unit 1515 and reflects it to the light splitting module 130 .

[0170] In this embodiment, the lens module further comprises a driving member for driving the lens unit carrier to move in a first direction X relative to the lens unit fixing seat to achieve automatic focusing.

[0171] In this embodiment, there are several implementations to achieve vibration compensation of the lens device in the second direction Y and the third direction Z, and the present invention is not limited thereto.

[0172] In an optional embodiment, the reflection unit carrier is connected to the reflection unit fixing seat via a rotation axis along the third direction Z, and the lens device 100 also includes a driving member for driving the reflection unit carrier to rotate along the third direction Z, thereby achieving vibration compensation in the second direction Y.

[0173] Fig.17 16 is a schematic diagram of a lens device according to the present invention. This embodiment is an improvement made on the basis of the tenth embodiment. For the sake of brevity, the same or similar parts as the tenth embodiment are not described in detail. Fig.17 As shown, in the sixteenth embodiment, the lens device 100 comprises: a reflection module 110, a lens module 120, an optical path turning module 150, a light splitting module 130, and an image sensing module 140. Different from the tenth embodiment, the structure of the optical path turning module 150 is changed.

[0174] The optical path turning module 150 includes: a first reflecting unit 151, a second reflecting unit 152, a reflecting prism unit 157, and a third reflecting unit 1517. The third reflecting unit 1517 is arranged after the reflecting prism unit 157 and before the light splitting module 130 on the optical path, that is, between the reflecting prism unit 157 and the light splitting module 130. The positions and structures of the first reflecting unit 151, the second reflecting unit 152 and the reflecting prism unit 157 are not changed.

[0175] The third reflection unit 1517 may be disposed at 45 degrees to the first direction X, and is used to reflect the light emitted from the reflection prism unit 157 to the light splitting module 130. This embodiment can further achieve a longer focal length and perform a higher magnification optical zoom.

[0176] In this embodiment, the first reflection unit 151 and the second reflection unit 152 can move in the same direction or in opposite directions along the third direction Z, thereby changing the optical path between the lens module 120 and the image sensing module 140 to achieve automatic focusing of the lens device 100 and vibration compensation in the third direction Z.

[0177] However, the present invention is not limited to the above automatic focusing method. In an alternative embodiment, the lens module further includes a driving member for driving the lens unit carrier to move relative to the lens unit fixing seat in the first direction X to achieve automatic focusing.

[0178] In this embodiment, there are several implementations to achieve vibration compensation of the lens device in the second direction Y and the third direction Z, and the present invention is not limited thereto.

[0179] In an optional embodiment, the reflection unit carrier is connected to the reflection unit fixing seat via a rotation axis along the third direction Z, and the lens device 100 further includes a driving member for driving the reflection unit carrier to rotate along the third direction Z, thereby achieving vibration compensation in the second direction Y. The lens device 100 further includes a driving member for driving the optical path turning module 150 to move relative to the lens module 120 along the first direction X, thereby achieving automatic focusing.

[0180] In the present invention, a light splitting module is used to split the incident light into at least a first light beam and a second light beam, and images are formed on the corresponding at least first light beam image sensing unit and second light beam image sensing unit, respectively, thereby effectively increasing the image sensing area and sensing the incoming light to the greatest extent. When the lens module has a high telephoto multiple, the problem of insufficient incident light brightness can be compensated, and the image quality can also be effectively improved.

[0181] It should be noted that the optical path turning module 150 of the present invention has multiple implementation forms, and these optical path turning modules 150 are not limited to a single embodiment in which they are applied. In the embodiment of dividing the light into two beams, the optical path turning module 150 can also be applied to the embodiment of dividing the light into three beams, and the positions and directions of the light splitting module 130 and the image sensing module 140 are adaptively adjusted, and vice versa. For the sake of brevity, it will not be repeated here.

[0182] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lens device, characterized in that: In order: A lens module having an optical axis along a first direction; a light splitting module, used for splitting the visible light from the lens module into a first light beam, a second light beam and a third light beam, wherein the first light beam, the second light beam and the third light beam have different wavelength ranges; and An image sensing module, comprising at least two image sensing units corresponding to the light beam, wherein the at least two image sensing units are used to sense the corresponding light beam and are arranged on different sides of the light splitting module; The light splitting module comprises: a first prism unit, comprising: a first surface for allowing light incident to the light splitting module to pass through; and a second surface for allowing a first light beam to be reflected and a second light beam and a third light beam to pass through, the second surface being coated with a first light splitting film, the first light splitting film allowing the first light beam of the incident visible light to be reflected and the second and third light beams to pass through; and a third surface for allowing the first light beam to be emitted; and The spectroscopic module also includes: a second prism unit adjacent to the first prism unit, including: a fourth surface for the second light beam and the third light beam to pass through, the fourth surface and the second surface are opposite to each other; a fifth surface for reflecting the second light beam and allowing the third light beam to pass through, the fifth surface being coated with a second spectroscopic film; and a sixth surface for the second light beam to emit.

2. The lens device according to claim 1, characterized in that: The image sensing module includes a first light beam image sensing unit and a second light beam image sensing unit for sensing the first light beam and the second light beam respectively.

3. The lens device according to claim 2, characterized in that: The image sensing module further includes a third light beam image sensing unit for sensing the third light beam.

4. The lens device according to claim 3, characterized in that: The light splitting module further includes a third prism unit adjacent to the second prism unit, and the third prism unit includes: a seventh surface for the third light beam to pass through, disposed adjacent to the fifth surface; and an eighth surface for the third light beam to emit; After the first light beam is reflected by the second surface to the first surface, it is totally reflected on the first surface and emitted from the third surface, and the first dichroic film on the second surface allows light with a wavelength range of 500 to 700 nm to pass through; After the second light beam is reflected by the fifth surface to the fourth surface, it is totally reflected on the fourth surface and emitted from the sixth surface. The second dichroic film on the fifth surface allows light with a wavelength range of 400 to 600 nm to pass through.

5. The lens device according to claim 3 or 4, characterized in that: The second prism unit reflects and deflects the second light beam. The second light beam image sensing unit is used to sense the corresponding second light beam and is arranged adjacent to the sixth surface. The second light beam image sensing unit and the first light beam image sensing unit are arranged on the same side of the light splitting module. The third light beam image sensing unit and the first light beam image sensing unit and the second light beam image sensing unit are arranged on different sides of the light splitting module.

6. The lens device according to claim 2, characterized in that: The first light beam image sensing unit is disposed adjacent to the third surface; the second light beam image sensing unit is disposed adjacent to the sixth surface; The spectroscopic module also includes: a first filter arranged between the first light beam image sensing unit and the third surface; and a second filter arranged between the second light beam image sensing unit and the sixth surface; the first filter allows light in the wavelength range of 400 to 600 nm to pass; the second filter allows light in the wavelength range of 500 to 700 nm to pass.

7. The lens device according to any one of claims 1 to 4 or 6, characterized in that: The lens device further comprises a reflection module for reflecting light incident from a second direction along the first direction to the lens module, and the lens device further comprises an optical path turning module arranged between the lens module and the light splitting module on the optical path.

8. The lens device according to claim 7, characterized in that: The optical path turning module includes a first reflection unit and a second reflection unit which can move in the same direction or in opposite directions along a third direction, wherein the first reflection unit includes a first reflection surface for reflecting the light emitted from the lens module to the second reflection unit; the second reflection unit includes a second reflection surface for reflecting the light from the first reflection surface to the splitting module, and the third direction is perpendicular to the first and second directions.

9. The lens device according to claim 7, characterized in that: The optical path turning module comprises: A first reflecting unit, used for reflecting light from the lens module; a reflective prism unit movable along a third direction, for reflecting the light from the first reflective unit, wherein the third direction is perpendicular to the first and second directions; and a second reflecting unit, used for reflecting the light from the reflecting prism unit; The reflecting prism unit comprises a first prism unit surface and a second prism unit surface, wherein the first prism unit surface is used to reflect light entering the reflecting prism unit to the second prism unit surface, and the second prism unit surface is used to reflect light from the first prism unit surface to the second reflecting unit.

10. The lens device according to claim 7, characterized in that: The optical path turning module comprises: a first reflecting unit, a second reflecting unit, and a third reflecting unit which can move in the same direction or in opposite directions along a third direction, wherein the third direction is perpendicular to the first and second directions; The first reflecting unit reflects the light emitted from the lens module to the second reflecting unit, the second reflecting unit reflects the light from the first reflecting unit to the third reflecting unit, and the third reflecting unit reflects the light from the second reflecting unit to the light splitting module.

11. The lens device according to claim 7, characterized in that: The optical path turning module comprises: a first reflecting unit and a second reflecting unit which can move in the same direction or in the opposite direction to each other along a third direction, and a reflecting prism unit, wherein the third direction is perpendicular to the first and second directions; the first reflecting unit reflects the light emitted from the lens module to the second reflecting unit, and the second reflecting unit reflects the light from the first reflecting unit to the reflecting prism unit; The reflective prism unit comprises: a first prism incident surface for light to be incident; a first prism reflection surface for reflecting the incident light; a second prism reflection surface for receiving and reflecting the light reflected from the first prism reflection surface; and a first prism exit surface; The optical path turning module further includes a third reflecting unit for reflecting the light emitted from the reflecting prism unit to the light splitting module. The third reflecting unit is arranged behind the reflecting prism unit and before the light splitting module on the optical path.

12. The lens device according to claim 7, characterized in that: The optical path turning module includes a first reflecting prism unit and a second reflecting prism unit both of which can move along a third direction, the third direction is perpendicular to the first and second directions, the first reflecting prism unit includes: a first prism incident surface for light to be incident; a first prism reflecting surface for reflecting the incident light; a second prism reflecting surface for receiving and reflecting the light reflected from the first prism reflecting surface; and a first prism exiting surface; The second reflecting prism unit includes: a second prism incident surface receiving light from the first reflecting prism unit; a third prism reflecting surface reflecting the incident light; a fourth prism reflecting surface receiving and reflecting light reflected from the third prism reflecting surface; and a second prism exit surface adjacent to the light splitting module.

13. The lens device according to claim 7, characterized in that: The optical path turning module includes a first reflection unit, a second reflection unit, a third reflection unit and a fourth reflection unit; the first reflection unit includes a first front reflection surface and a first back reflection surface, and the first front reflection surface and the first back reflection surface are arranged on the front and back surfaces of the first reflection unit; the first front reflection surface is used to reflect the light emitted from the lens module to the second reflection unit, the second reflection unit reflects the light from the first reflection surface to the third reflection unit, the third reflection unit reflects the light from the second reflection unit to the fourth reflection unit, the fourth reflection unit reflects the light from the third reflection unit to the first back reflection surface, and the first back reflection surface reflects the light to the spectroscopic module.

14. The lens device according to claim 7, characterized in that: The optical path turning module comprises: The first reflecting prism unit comprises: a first surface for incident light from the lens module; a second surface for reflecting the incident light; and a third surface for reflecting the light reflected from the second surface back to the first surface and causing total reflection on the first surface, and then vertically penetrating the second surface; The second reflecting prism unit comprises: a fourth surface, which is opposite to the second surface and is incident on the light; a fifth surface, which totally reflects the incident light; and a sixth surface, which reflects the light reflected from the fifth surface back to the fourth surface and totally reflects the light on the fourth surface, and then vertically penetrates the fifth surface; The first reflection unit receives the light from the second reflection prism unit and reflects the light to the light splitting module.

Images