CN109210411B

CN109210411B - Light source device and image sensor

Info

Publication number: CN109210411B
Application number: CN201811260020.7A
Authority: CN
Inventors: 王虎岩; 于超; 王凤秀; 王家重; 曹慧俐; 曲涛
Original assignee: Weihai Hualing Opto Electronics Co Ltd
Current assignee: Weihai Hualing Opto Electronics Co Ltd
Priority date: 2018-10-26
Filing date: 2018-10-26
Publication date: 2024-07-05
Anticipated expiration: 2038-10-26
Also published as: CN109210411A

Abstract

The application provides a light source device and an image sensor. The light source device includes: the frame body comprises at least one frame body unit, and the frame body unit is provided with a containing cavity; at least one light source unit, at least part of light source unit sets up in holding the intracavity, and light source unit includes a light emitting device, at least one reflection portion and a lens, and light emitting device sets up in holding the intracavity, and reflection portion setting is in holding the intracavity and with the diapire nonparallel setting of framework unit, and the lens setting is in the one side of keeping away from the diapire of framework unit of reflection portion, and light that light emitting device sent passes through reflection portion and lens in proper order, forms parallel light. The light source device has smaller volume.

Description

Light source device and image sensor

Technical Field

The present application relates to the field of image sensors, and in particular, to a light source device and an image sensor.

Background

The existing parallel light source is mostly used for size and shape detection, is limited by technical conditions and cost, and has smaller general size; while the light source device described in CN106303145A has a larger length, the shorter the focal length is, the larger the distortion is, and the worse the parallel light effect is, since the light source is located at the actual focal point of the lens, and for the convex lens 5. Therefore, in order to obtain a good parallel light effect, a lens having a large focal length is required, which makes the light source device have a large external shape. The invention aims to overcome the defect, thereby reducing the volume in width and height and providing an ultra-long linear light source device with small volume, compact structure and low cost.

Disclosure of Invention

The present application provides a light source device and an image sensor, which solve the problem of large size caused by large width and/or height of the light source device in the prior art.

In order to achieve the above object, according to one aspect of the present application, there is provided a light source device including: a frame body comprising at least one frame body unit, wherein the frame body unit is provided with a containing cavity; at least one light source unit, at least part of the light source unit is arranged in the accommodating cavity, the light source unit comprises a light emitting device, at least one reflecting part and a lens, the light emitting device is arranged in the accommodating cavity, the reflecting part is arranged in the accommodating cavity and is not parallel to the bottom wall of the frame body unit, the lens is arranged on one side of the reflecting part far away from the bottom wall of the frame body unit, and light emitted by the light emitting device sequentially passes through the reflecting part and the lens to form parallel light.

Further, the frame unit includes a first side wall, a second side wall, and a bottom wall, where the first side wall and the second side wall are disposed opposite to each other.

Further, the frame unit has one.

Further, the light source unit has a plurality of light source units, the light source device further includes at least one blocking member, the blocking member is located between the first side wall and the second side wall and divides the accommodated cavity into a plurality of sub-accommodated cavities, at least part of the light source units are located in the sub-accommodated cavities in a one-to-one correspondence manner, and the blocking member is used for preventing light rays in one light source unit from being incident into the lens of the adjacent light source unit; preferably, the barrier member includes four side surfaces and two surfaces, one side surface and the lens have a distance d1 in a height direction of the frame, and the remaining three side surfaces are disposed in contact with a side wall and a bottom wall of the frame, respectively; further preferably, in the light source device, the lenses are all the same, d1=t1f/L, where t1 is a thickness of the barrier, f is a focal length of the lenses, L is a length of a spot of the outgoing light of the light source unit in a first direction, the first direction is perpendicular to a thickness direction of the first sidewall and perpendicular to a height direction of the frame unit, and a light transmittance of the barrier is less than or equal to 10%; still more preferably, the barrier is a barrier plate.

Further, the plurality of frame units are arranged in sequence along a first direction, the first direction is perpendicular to the thickness direction of the first side wall and is perpendicular to the height direction of the frame units, the plurality of light source units are arranged, and at least part of each light source unit is located in the accommodating cavity in a one-to-one correspondence manner; preferably, the frame unit includes a third side wall and a fourth side wall disposed opposite to each other, the third side wall and the fourth side wall being connected to the first side wall and the second side wall, respectively, to form the accommodating chamber, and preferably, the third side wall and the corresponding lens have a distance d2 in a height direction of the frame, and/or the fourth side wall and the corresponding lens have a distance d3 in the height direction of the frame; further preferably, in the light source device, the lenses are all the same, d2=t2f/L, where t2 is a thickness of the third sidewall, d3=t3f/L, where t3 is a thickness of the fourth sidewall, f is a focal length of the lenses, and L is a length of a spot of the light emitted from the light source unit in a first direction, and the first direction is perpendicular to a thickness direction of the first sidewall and perpendicular to a height direction of the frame unit.

Further, the light source device further includes a base, and each of the frame units is disposed on the base.

Further, the light source unit includes one of the reflecting portions.

Further, the light source unit includes at least two reflecting portions, and in the light source unit, light emitted from the light emitting device sequentially passes through the at least two reflecting portions and the one lens to be emitted in parallel.

Further, the light source unit includes three reflection parts, the three reflection parts are a first reflection part, a second reflection part and a third reflection part, respectively, and the light emitted from the light emitting device sequentially passes through the first reflection part, the second reflection part and the third reflection part.

Further, the light emitting device is provided on an inner surface of the first side wall or in the first side wall, one end surface of the third reflecting portion is provided on the first side wall, the other end surface is provided on the bottom wall, one end surface of the first reflecting portion is provided on the bottom wall, the other end surface is provided on the second side wall, one end surface of the second reflecting portion is provided on the top wall, the other end surface is provided on the second side wall, or one end surface of the second reflecting portion is provided on the bottom wall, the other end surface is provided on the second side wall, one end surface of the first reflecting portion is provided on the top wall, and the other end surface is provided on the second side wall.

Further, each of the light emitting devices is a point light source, preferably an LED.

Further, in the light source unit, an angle between each of the reflecting portions and the bottom wall is θ,0 ° < θ <180 °, and preferably θ=45°.

Further, the light emitting device is disposed within the first sidewall or on an inner surface of the first sidewall; preferably, the light source unit further includes a conductive substrate portion provided on an inner surface of the first sidewall or in the first sidewall, and the light emitting device is provided on a surface of the conductive substrate portion adjacent to the accommodation chamber; further preferably, the first sidewall has a first mounting groove therein, and the conductive substrate portion and the light emitting device are mounted in the first mounting groove.

Further, the frame unit further includes an emission control unit for controlling an emission angle of the emitted light of the light emitting device.

Further, the first side wall has a first mounting groove therein, the light emitting device is mounted in the first mounting groove, the light emitting control unit is a light emitting groove, the light emitting groove is located in the first side wall, one side of the light emitting groove is communicated with the first mounting groove, the other side of the light emitting groove is communicated with the accommodating cavity, and the center of the light emitting device is on an extension line of an axis of the light emitting groove.

Further, the light emitting device is disposed on an inner surface of the first sidewall, the light emitting control portion is a light emitting shroud, and the light emitting shroud is disposed on the inner surface of the first sidewall and surrounds an outer periphery of the light emitting device.

Further, the bottom wall, the side wall and/or the top wall of the frame unit has a second mounting groove in which a portion of the reflecting portion including the end face is mounted.

Further, the reflecting portion is a plane reflecting mirror, preferably the lens is a convex lens or a fresnel lens, and preferably the light source unit has a plurality of lenses, and the corresponding plurality of lenses in the plurality of light source units are disposed in contact with each other in order.

Further, at least one of the light source units further comprises a first position control device connected to the light emitting device, the first position control means is for adjusting the position of the light emitting device, and preferably the light source device further comprises a second position control device connected to the lens, and the second position control means is for adjusting the position of the lens.

Further, at least one of the frame units further includes a protector covering at least a portion of a surface of the lens remote from the reflecting portion, and the light transmittance of the protector is 90% or more.

Further, the top wall of the frame unit has an opening, and the lens is disposed in the opening or is disposed on one side of the opening.

Further, the plurality of lenses are identical, and the plurality of light emitting devices are identical.

According to another aspect of the present application, there is provided an image sensor including a light source device, the light source device being any one of the light source devices described above.

In the light source device according to the present application, most of the light emitted from the light emitting device is reflected by the reflecting portion, and the direction of the light is changed, and the light is irradiated onto the lens. Thus, the height H of the frame unit can be greatly reduced, and the volume of the frame unit can be further reduced, thereby reducing the volume of the light source device.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

Fig. 1 shows a schematic cross-sectional view of a light source device according to embodiment 1 of the present application;

FIG. 2 shows an enlarged partial schematic view of FIG. 1;

fig. 3 is a schematic perspective view showing a light source device of embodiment 1 of the present application;

fig. 4 shows a front view of the light source device of fig. 3;

fig. 5 shows a schematic diagram of the distribution of the light emission intensity of the point light source in the light source device in embodiment 1;

fig. 6 shows a sectional view of the light source device of embodiment 2;

fig. 7 shows a sectional view of the light source device of embodiment 3;

fig. 8 is a schematic perspective view showing a frame unit in the light source device of embodiment 4;

fig. 9 shows a schematic perspective view of the light source device of embodiment 4.

Wherein the above figures include the following reference numerals:

10. A base; 20. a frame; 21. a frame unit; 22. a first sidewall; 221. a first mounting groove; 222. a light outlet groove; 23. a second sidewall; 231. a second mounting groove; 24. a third sidewall; 25. a fourth sidewall; 26. a bottom wall; 27. a top wall; 271. an opening; 272. a step; 28. a light-emitting coaming; 30. a conductive substrate portion; 40. a light emitting device; 50. a reflection section; 51. a first reflection section; 52. a second reflection part; 53. a third reflection section; 60. a lens; 70. a barrier; 80. a protective member; 90. a first position control device; 100. a second position control device; 110. a first fixing member; 120. and a second fixing member.

Detailed Description

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Furthermore, in the description and in the claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.

As described in the background art, the present application provides a light source device and an image sensor, which solve the above problems, because the light source device has a large width and/or a large height.

In an exemplary embodiment of the present application, there is provided a light source device including a frame 20 and at least one light source unit as shown in fig. 1, 3, 4, and 6 to 9.

Wherein the frame 20 comprises at least one frame unit 21, and the frame unit 21 is provided with a containing cavity; at least a part of the light source unit is disposed in the housing chamber, the light source unit includes a light emitting device 40, at least one reflecting portion 50, and a lens 60, the light emitting device 40 is disposed in the housing chamber, the reflecting portion 50 is disposed in the housing chamber and is disposed non-parallel to the bottom wall 26 of the housing unit 21, that is, the reflecting portion 50 is disposed obliquely with respect to the bottom wall 26 of the housing unit 21, the lens 60 is disposed on a side of the reflecting portion 50 away from the bottom wall 26 of the housing unit 21, and light emitted from the light emitting device 40 sequentially passes through the reflecting portion 50 and the lens 60 to form parallel light.

In the light source device described above, the light emitted from the light emitting device irradiates the reflecting portion, most of the light is reflected by the reflecting portion, the direction of the light is changed, and the light irradiates the lens, and according to the principle of linear propagation of the light, when the stroke of the light is equal to the focal length of the lens (for example, ab 2+b2c2=f, f is the focal length of the lens in fig. 1), the center of the light emitting device corresponds to the focal point O of the lens, so that the light is reflected by the reflecting portion to the lens, refracted by the lens, and then corresponds to the light emitted from the light emitting device at the focal point of the lens, and the light directly irradiates the lens, thereby forming parallel light. Thus, the height H of the frame unit can be greatly reduced, and the volume of the frame unit can be further reduced, thereby reducing the volume of the light source device.

In a specific embodiment, as shown in fig. 1,3, 4, and 6 to 9, the frame unit 21 includes a first side wall 22, a second side wall 23, and a bottom wall 26, where the first side wall 22 and the second side wall 23 are disposed opposite to each other.

The first side wall and the second side wall are not limited to the planar structures shown in fig. 1,3, 4, and 6 to 9, and may be curved surfaces, and one of the first side wall and the second side wall may be a planar surface, and the other may be a curved surface, as long as the two are disposed opposite to each other.

More specifically, as shown in fig. 1,3, 4, and 6 to 9, the frame unit is a cubic frame unit. Of course, the frame unit of the present application is not limited to the cube shape, but may be other shapes.

The frame unit in the present application may be one, and in the embodiments corresponding to fig. 1, 3 and 4, only one frame unit is provided, and the frame is actually the frame unit. Of course, there may be a plurality of frame units, as in the embodiment shown in fig. 8 and 9. The person skilled in the art can choose to arrange a suitable number of frame units according to the actual situation.

When there is only one frame unit in the frame, there may be one or more light source units, and one or more light source units may be provided in the frame according to actual circumstances by those skilled in the art.

In an embodiment of the present application, when there is only one frame unit in the frame, as shown in fig. 3 and 4, the light source unit has a plurality of light source units, and the light source device further includes at least one blocking member 70, where the blocking member 70 is located between the first sidewall 22 and the second sidewall 23 and divides the accommodated cavity into a plurality of sub-accommodating cavities, and at least part of the light source units are located in the sub-accommodating cavities in a one-to-one correspondence manner, that is, at least the light emitting devices and the reflecting portions in the light source units are disposed in the sub-accommodating cavities, and the blocking member is used to prevent light from one of the light source units from entering the lens of the adjacent light source unit, that is, to ensure that light from the light emitting device in one light source unit enters the corresponding lens after being reflected by the reflecting portion, to prevent the light from entering the lens of the adjacent light source unit, and affect the parallelism of light emission of the adjacent light source unit.

In order to further prevent light from one light source unit from entering the lens of an adjacent light source unit and to ensure that light at the joint of the adjacent lens is not lost, in one embodiment of the present application, as shown in fig. 4, the barrier 70 includes four sides and two surfaces, one side and the lens 60 have a distance d1 in the height direction of the frame 20, and the remaining three sides are disposed in contact with the side wall and the bottom wall 26 of the frame 20, respectively.

In order to further reduce the reflection of the stray light, avoid affecting the parallelism of the light, and simplify the structure of the light source device, in another embodiment of the present application, the lenses 60 in the light source device are all the same, d1=t1f/L, where t1 is the thickness of the barrier 70, f is the focal length of the lenses 60, L is the length of the spot of the outgoing light of the light source unit in the first direction, the first direction is perpendicular to the thickness direction of the first side wall 22 and perpendicular to the height direction of the frame unit 21, and the light transmittance of the barrier 70 is less than or equal to 10% and may be made of a black opaque metal or non-metal material, so that the reflection of the stray light can be reduced as much as possible to avoid affecting the parallelism of the light.

In one embodiment, as shown in FIG. 4, the preferred baffle 70 is a baffle plate, and the four sides and two surfaces of the group of baffle plates are planar.

Of course, the blocking member of the present application is not limited to a structure including four sides and two surfaces, but may be a curved surface structure having an integrated surface, and a blocking member of an appropriate structure may be selected according to actual circumstances in the art as long as it can be adapted to the frame unit and can function as a lens blocking light from being incident into an adjacent light source unit.

In another specific embodiment, as shown in fig. 9, there are a plurality of the frame units 21, and the plurality of frame units 21 are sequentially arranged along a first direction, where the first direction is perpendicular to a thickness direction of the first sidewall 22 and perpendicular to a height direction of the frame units 21, and there are a plurality of the light source units, and at least a portion of each of the light source units is located in the accommodating cavity in a one-to-one correspondence manner, that is, at least a light emitting device and a reflecting portion in the light source unit are disposed in the accommodating cavity.

It should be noted that, the plurality of frame units of the present application are not limited to being arranged along the first direction, and those skilled in the art may set the arrangement of the plurality of frame units according to actual needs, for example, when a linear light source is required, the plurality of frame units may be arranged along the first direction, and when a surface light source is required, the plurality of frame units may be arranged along the first direction and in a direction parallel to the thickness direction of the first sidewall. Of course, in the above embodiment including the barrier member, the barrier member may divide the accommodating chamber into a plurality of sub-accommodating chambers arranged along the first direction and the second direction, the second direction being a direction parallel to the thickness direction of the first sidewall, and being perpendicular to the first direction.

In the embodiment shown in fig. 8, the frame unit 21 includes a third sidewall 24 and a fourth sidewall 25 disposed opposite to each other, and the third sidewall 24 and the fourth sidewall 25 are connected to the first sidewall 22 and the second sidewall 23, respectively, to form the accommodating cavity.

In order to prevent light in one frame unit from entering the lenses of the adjacent frame units, that is, to ensure that light emitted from the light emitting devices in one frame unit is reflected by the reflecting portions and then enters the corresponding lenses, to prevent the light from entering the lenses in the adjacent frame units, to affect the parallelism of light emission of the adjacent light source units, and to ensure that light at the joints of the adjacent lenses is not lost, in one embodiment of the present application, it is preferable that the third side wall 24 and the corresponding lenses 60 have a distance d2 in the height direction of the frame 20, and/or that the fourth side wall 25 and the corresponding lenses 60 have a distance d3 in the height direction of the frame 20.

In order to further reduce reflection of stray light, avoid influencing parallelism of light, and simplify the structure of the light source device, in another embodiment of the present application, the lenses 60 in the light source device are identical, d2=t2f/L, where t2 is the thickness of the third sidewall 24, d3=t3f/L, where t3 is the thickness of the fourth sidewall 25, f is the focal length of the lenses 60, L is the length of the spot of the outgoing light of the light source unit in the first direction, and the first direction is perpendicular to the thickness direction of the first sidewall 22 and perpendicular to the height direction of the frame unit 21.

In order to minimize the reflection of stray light so as not to affect the parallelism of light, the transmittance of the third side wall and the fourth side wall of the frame unit is less than or equal to 10%, and the frame unit may be made of a black opaque metal or nonmetal material.

In order to better fix the plurality of frame units, in one embodiment of the present application, as shown in fig. 9, the light source device further includes a base 10, and each of the frame units 21 is disposed on the base 10.

The light source unit of the present application may include only one of the light emitting devices 40, one of the reflecting parts 50, and one of the lenses 60, as shown in fig. 1, 6, and 8; further, the light source unit may include one light emitting device 40, at least two reflecting portions 50, and one lens 60, and light emitted from the light emitting device 40 may be sequentially emitted through the at least two reflecting portions 50 and the one lens 60 to form parallel light. The person skilled in the art can set a proper number of reflecting parts according to practical situations, so long as the light emitted by the light emitting device can sequentially pass through one or more reflecting parts and then enter the lens to emit parallel light.

It should be noted that, no matter how many light emitting devices and lenses of the reflecting portions are in one light source unit, the center of the light emitting device corresponds to the focal position of the lens.

It should be noted that, the light source device of the present application may further have a reflecting device, such as a reflecting plane mirror, and the reflecting device is divided into a plurality of areas according to a certain direction, and each area corresponds to a reflecting portion, so that the installation is convenient, but the material is wasted. In practical use, in order to consider the comprehensive performance, the two methods are generally combined.

In a specific embodiment, as shown in fig. 7, the light source unit includes three reflecting portions 50, and the three reflecting portions 50 are respectively a first reflecting portion 51, a second reflecting portion 52 and a third reflecting portion 53, and the light emitted from the light emitting device 40 sequentially passes through the first reflecting portion 51, the second reflecting portion 52 and the third reflecting portion 53. The specific positions of the respective reflecting portions may be set according to the specific positions of the lenses and the light emitting device by those skilled in the art.

For example, when the light emitting device 40 is disposed on the inner surface of the first sidewall 22 or within the first sidewall 22, one end surface of the third reflecting portion 53 is disposed on the first sidewall 22 and the other end surface is disposed on the bottom wall 26. One end surface of the first reflecting portion 51 is provided on the bottom wall 26, the other end surface is provided on the second side wall 23, one end surface of the second reflecting portion 52 is provided on the top wall 27, the other end surface is provided on the second side wall 23, or one end surface of the second reflecting portion 52 is provided on the bottom wall 26, the other end surface is provided on the second side wall 23, one end surface of the first reflecting portion 51 is provided on the top wall 27, and the other end surface is provided on the second side wall 23. Specifically, the specific positions of the first and second reflection parts are also set according to the specific positions of the light emitting devices. As shown in fig. 7, the light emitting device is disposed near the top wall of the housing unit, so that one end surface of the first reflecting portion 51 is disposed on the top wall 27, the other end surface is disposed on the second side wall 23, one end surface of the second reflecting portion 52 is disposed on the bottom wall 26, and the other end surface is disposed on the second side wall 23.

In order to further ensure the parallelism of the light emission of the light source device, in one embodiment of the present application, each of the light emitting devices 40 is a point light source, preferably an LED. Specifically, the point light source can emit monochromatic light, can be a combination of several light sources, can emit visible light and can emit invisible light, and can be selected by a person skilled in the art according to actual needs.

In one embodiment of the present application, in the light source unit, an angle between each of the reflecting portions 50 and the bottom wall 26 is θ, and 0 ° < θ <180 °. In a specific embodiment, θ=45°, as shown in fig. 6 and 7.

The light emitting device in the present application may be provided at any position in the frame unit as long as it is mated with the reflecting portion and the lens and emits parallel light. The person skilled in the art can arrange the light emitting device in a suitable position according to the actual situation.

As shown in fig. 1, 6 to 8, the light emitting device 40 is disposed in the first sidewall 22 or on an inner surface of the first sidewall 22.

In order to more conveniently and efficiently control the operation of the light emitting device and improve the integration of the light source device, in one embodiment of the present application, as shown in fig. 1,2, and 6 to 8, the light source unit further includes a conductive substrate part 30, the conductive substrate part 30 is disposed on the inner surface of the first sidewall 22 or disposed in the first sidewall 22, and the light emitting device 40 is disposed on the surface of the conductive substrate part 30 adjacent to the receiving cavity.

In the present application, the conductive substrate portions of the plurality of light source units may be a plurality of conductive substrate portions isolated from each other; the light source device may also include a conductive substrate, where the conductive substrate may be divided into a plurality of areas, each area corresponds to a conductive substrate, and the light emitting devices are arrayed in a direction according to a certain pitch, and one conductive substrate has the advantage that the light source array formed by the light emitting devices 40 is completed by using a high-precision machine, so that the die bonding precision is high, and the control of the position precision of the light emitting devices 40 is facilitated.

In another embodiment of the present application, as shown in fig. 1,2, 6 and 7, the first sidewall 22 has a first mounting groove 221 therein, and the conductive substrate part 30 and the light emitting device 40 are mounted in the first mounting groove 221.

Of course, the conductive substrate portion may also be disposed directly on the inner surface of the first sidewall, and the light emitting device may be disposed on the surface of the conductive substrate portion remote from the first sidewall, as shown in fig. 8.

In order to control the emission angle of the emitted light of the light emitting device 40 and ensure uniform brightness of the spot, in one embodiment of the present application, the housing unit 21 further includes an emission control part. The luminous intensity distribution of the light emitting device is closely related to the exit angle, the relationship of which is shown in fig. 5.

When the light source device comprises a plurality of light source units, the light emitted by the light source device is actually formed by splicing parallel light spots emitted by one or more light source units, so that the light emitted by the whole light source device is regularly uneven in brightness, and the light cannot be completely uniform in brightness, so that the light can be controlled within an allowable range, and the light is related to the use requirement of a product.

In a specific embodiment, as shown in fig. 1, the first sidewall 22 has a first mounting groove 221 therein, the light emitting device 40 is mounted in the first mounting groove 221, the light emitting control part is a light emitting groove 222, the light emitting groove 222 is located in the first sidewall 22, one side of the light emitting groove 222 is communicated with the first mounting groove 221, and the other side of the light emitting groove 222 is communicated with the accommodating cavity. As can be seen from fig. 1, the light having an exit angle larger than δ is blocked by the wall of the light exit groove. Therefore, the angle of the light beam that can be emitted is determined by the depth n, length k, and width z of the light-emitting groove.

In order to simplify the design, in one embodiment of the present application, the center of the light emitting device 40 is on the extension line of the axis of the light emitting slot 222.

According to the use requirement, the delta angle in fig. 1 can be predetermined, z= ntg delta, and according to the structure, the use requirement and the like, two parameters in the formula are arbitrarily determined, so that the other parameter can be obtained; meanwhile, according to fig. 1, the width of the light spot can be obtained by c1c3=ftgδ, and c1c3, and the length k of the light emitting slot and the width of the light spot can be determined according to the value of δ, so that the width of the lens can be determined, and as shown in fig. 8, the length of the light spot can be determined according to the angle r and the length of the light emitting slot, so that the width L of the light spot can be determined, generally, the width of the light spot should be slightly greater than or equal to the width of the lens, and the length L of the light spot should be slightly greater than or equal to the length of the lens, so that the light spot cannot reach the edge of the lens due to error accumulation, and the light spot brightness difference at the joint of the light spots is ensured to be small.

In still another embodiment of the present application, as shown in fig. 8, the light emitting device 40 is disposed on the inner surface of the first sidewall 22, the light emitting control part is a light emitting shroud 28, and the light emitting shroud 28 is disposed on the inner surface of the first sidewall 22 and surrounds the outer circumference of the light emitting device 40. The parameters such as the height, the opening width and the like of the light-emitting coaming determine the light-emitting angle of the light-emitting device, and the light-emitting coaming with specific structural parameters can be designed according to the performance requirements of products.

In order to ensure the stability of the performance of the light source device, improve the reliability thereof, and at the same time simplify the installation process of the light source device, in one embodiment of the present application, the bottom wall 26, the side wall and/or the top wall 27 of the frame unit 21 has a second installation groove 231, the portion of the reflecting portion 50 including the end surface is installed in the second installation groove 231, and in the embodiment shown in fig. 8, the second side wall of the frame unit 21 has the second installation groove 231, and one end surface of the reflecting portion 50 is installed in the second installation groove 231. Of course, the bottom wall and the top wall may also have second mounting grooves, and one or more second mounting grooves may be provided according to the position of the reflecting portion.

In a specific embodiment of the present application, the reflecting portion is a plane mirror, and the plane mirror 4 has a good specular reflection effect, so that most of the light emitted by the light emitting device can be reflected by the plane mirror.

In still another embodiment of the present application, the lens 60 is a convex lens or a fresnel lens, wherein the fresnel lens has advantages of small thickness, simple manufacture and low cost.

In order to ensure the continuity of the light spot of the outgoing light of the light source device, in one embodiment of the present application, there are a plurality of light source units, and a plurality of lenses 60 corresponding to the plurality of light source units are disposed in contact in sequence. When the light emitted from the light source device is linear light, the lenses may be closely arranged in order in the first direction.

Of course, the reflecting portion and the lens of the present application are not limited to the above-mentioned ones, but may be other structures or devices that can realize the corresponding functions.

It should be noted that, in the present application, one reflecting portion is not necessarily a plane reflecting mirror, and when a plurality of light source units are included in the light source device and each light source unit includes one reflecting portion, the light source device may have only one plane reflecting mirror, and the plane reflecting mirror may be divided into a plurality of areas along the length direction of the light source device, each area corresponding to one reflecting portion. When each light source unit includes a plurality of reflecting portions, for example, three reflecting portions, the light source device may have only three plane mirrors, and each plane mirror may be divided into a plurality of regions along the length direction of the light source device, one reflecting portion for each region.

In order to further ensure that the parallelism of the light emitted from the light source device is better and the position of the parallel light spots is suitable, in one embodiment of the present application, as shown in fig. 7, at least one of the light source units further includes a first position control device 90, where the first position control device 90 is connected to the light emitting device 40, and the first position control device is used to adjust the position of the light emitting device 40, so as to eliminate the accumulated error and make the position of the light emitting device relative to the lens more accurate.

In a preferred embodiment, the first position control apparatus can also fix the light emitting device after the position adjustment, so that no additional fixing device is required to fix the light emitting device after the position adjustment, thereby saving cost and simplifying the structure of the light source device.

In another embodiment of the present application, as shown in fig. 7, the light source apparatus further includes a second position control device 100, where the second position control device 100 is connected to the lens 60, and the second position control device is used to adjust a position of the lens 60, so that the position of the lens can be adjusted by the second position control device, so that a center of the light emitting device is equivalent to a focal position of the lens, thereby further ensuring that the light source apparatus has better light-emitting parallelism and suitable parallel light spot positions.

In another preferred embodiment, the second position control device can also fix the lens after the position adjustment, so that no additional fixing device is needed to fix the lens after the position adjustment, thereby saving the cost and simplifying the structure of the light source device.

In another specific embodiment, the second position control device can only adjust the position of the lens in the first direction and the second direction. The second direction is a direction parallel to the thickness direction of the first sidewall, i.e., perpendicular to the first direction.

In order to protect and dust-proof the lens, in one embodiment of the present application, as shown in fig. 1, at least one of the frame units 21 further includes a protecting member 80, wherein the protecting member 80 covers at least a portion of a surface of the lens 60 remote from the reflecting portion 50, and a light transmittance of the protecting member 80 is greater than or equal to 90%. The protective material may be glass or a material having good light transmittance such as plastic. Those skilled in the art can select appropriate materials to form the protector according to the actual circumstances. In a specific embodiment, the protective member is a light-transmitting plate.

In still another embodiment of the present application, the top wall 27 of the housing unit 21 has an opening 271, and the lens 60 is disposed in the opening 271 or disposed on one side of the opening 271, specifically, the lens may be disposed in the opening, may be disposed on a side of the opening away from the accommodating chamber, and may be disposed on a side of the opening close to the accommodating chamber. One skilled in the art may choose to place the lens in the appropriate position depending on the actual situation. In the embodiment shown in fig. 1, the lens 60 is disposed in the opening 271, and in practice, two opposite side walls of the opening 271 are each provided with a recess in which both ends of the lens 60 are respectively mounted. As shown in fig. 8, the two sidewalls of the opening have steps 272, and both ends of the lens may be respectively overlapped on the steps 272 of the two sidewalls.

In order to simplify the structure of the light source device, in a specific embodiment of the present application, the plurality of lenses 60 are identical, and the plurality of light emitting devices 40 are identical.

In another exemplary embodiment of the present application, there is provided an image sensor including a light source device, which is any one of the light source devices described above.

The image sensor has a small volume due to the inclusion of the light source device.

In order to make the technical solution of the present application more clearly understood by those skilled in the art, the following description will be made with reference to specific embodiments.

Example 1

As shown in fig. 1 to 3, the light source device includes a frame 20 and a plurality of identical light source units, the frame 20 includes only one frame unit 21, that is, the frame 20 is also the frame unit 21, the frame unit 21 is formed by a first side wall 22, a second side wall 23, a third side wall 24, a fourth side wall 25, a bottom wall 26, a top wall 27 and a protection member 80, the first side wall 22, the second side wall 23, the third side wall 24, the fourth side wall 25 and the bottom wall 26 form a receiving cavity, the first side wall 22 and the second side wall 23 are disposed opposite to each other, a first mounting groove 221 is formed in the first side wall 22, a light emitting groove 222 is further formed in the first side wall, one side of the light emitting groove 222 is communicated with the first mounting groove 221, the other side of the light emitting groove 222 is communicated with the receiving cavity, and a center of the light emitting device 40 is formed on an extension line of an axis of the light emitting groove 222. The top wall 27 of the frame unit 21 has an opening 271.

As shown in fig. 3, a plurality of light source units are sequentially arranged along a first direction, the light source units are composed of one light emitting device 40, one reflecting portion 50, one lens 60 and one conductive substrate portion 30, wherein the light emitting device 40 is a point light source LED which can emit red light, and the light emitting device 40 is located at a focal position of the lens 60. The reflecting portion 50 is a reflecting plane mirror, the reflecting portion 50 is obliquely arranged in the accommodating cavity, one end of the reflecting portion 50 contacts with the second side wall, the other end of the reflecting portion contacts with the bottom wall, and an included angle θ between the reflecting portion 50 and the bottom wall is 45 °.

The lenses 60 are convex lenses 60, and the focal length f=120 mm, the width of the lenses 60 is 30mm, and the lenses 60 are closely arranged along the first direction to ensure continuity of the formed spots. The light emitting device 40 is disposed on a surface of the conductive substrate part 30 near the receiving cavity. Grooves are formed in two side walls of the opening of the top wall, two ends of the convex lens 60 are respectively inserted into the two grooves, the protection piece 80 is arranged on one side of the opening far away from the lens 60, the protection piece 80 is a transparent plate formed by glass, and the lens 60 and the protection piece 80 are placed in parallel. The conductive substrate portion 30 is mounted in the first mounting groove 221, and the conductive substrate portion 30 is an LED PCB board.

The light emitted from the light emitting device 40 irradiates the reflecting portion 50, and since the specular reflection effect of the reflecting portion 50 is excellent, it is possible to achieve 90% or more, and therefore most of the light is specularly reflected, changed in direction, and irradiated onto the lens 60, and it is known that when the light ray travel ab1+b1c1=f, f is the focal length of the lens 60, the center of the light emitting device 40 corresponds to the focal point O of the lens 60, and therefore, when the reflecting portion 50 reflects the light ray to the lens 60, it is equivalent to the light emitted from the light emitting device 40 at the focal point position of the lens 60 after being refracted by the lens 60, and thus, the parallel light is emitted. This can greatly reduce the height H of the housing 20.

In this embodiment, the lens 60, the LED PCB board and the reflecting portion 50 are all independent units and are independently mounted, which has advantages in that it is advantageous to standardize the product and to adjust the mounting position, and at the same time, save materials. In the present embodiment, the reflecting portion 50 is fixed in the accommodation chamber of the housing unit 21 at an inclination angle θ=45°. As can be seen from fig. 1, the light emitted from the light emitting device 40 is reflected by the reflecting portion 50, enters the lens 60 after being reflected by the mirror surface, and is refracted by the lens 60 to obtain parallel light parallel to the LED PCB.

The light exit slot 222 is used to control the angle of the emitted light, and as can be seen in fig. 1, the light having an exit angle greater than δ is blocked by the wall of the light exit slot 222. In this embodiment, δ=9°, r=35° of the depth n=3.9 mm of the light-emitting groove 222, the length k=5.4 mm, and the width z=1.3 mm are set. The corresponding spot length= f tgr =166 mm of each light source unit, and the spot length L is larger than the width of the lens 60, so that the spot brightness difference at the spot connection position is smaller, and the angle r can be shown in fig. 8.

Example 2

The difference from example 1 is that: as shown in fig. 4, in the accommodation chamber, at the joint position of the two lenses 60, a blocking member 70, specifically a partition plate, is installed, the thickness t=2mm of which is, except for the side adjacent to the lenses 60, three sides of which are in close contact with the inner wall of the frame unit 21, and between the partition plate and the lenses 60, a gap d is left, d=tf/l=12mm, which prevents light from entering the adjacent lenses 60, which causes an influence on the parallelism of light, and ensures that the light at the joint position of the adjacent lenses 60 is not lost. The baffle is made of black PC material, so that the reflection of stray light can be reduced as much as possible, and the influence on the parallelism of light is avoided.

Example 3

The difference from example 1 is that: as shown in fig. 6, θ=30°. Since the reflecting portion 50 uses the principle of specular reflection of a plane mirror, as shown in fig. 6, the incident light ray ab1 and the reflected light ray b1c1 are completely symmetrical with respect to the normal line b1p1 of the plane mirror, that is, = 1= 2, and in the same manner, = 3= 4, OQ is the optical central axis of the lens 60. In order to save space, the entire lens 60 is not used, but only half of the lens 60 is used for illustration, and the light ray b1c1 coincides with the optical central axis OQ of the lens 60, so that the lens 60 should be perpendicular to the light ray b1c1, and therefore the lens 60 also has a certain inclination angle, specifically, the angle between the lens 60 and the bottom wall is 30 °.

Example 4

As shown in fig. 7, this embodiment differs from embodiment 1 in that in this embodiment, three reflection parts 50 are provided in each light source unit, namely, a first reflection part 51, a second reflection part 52 and a third reflection part 53, and each reflection part 50 is the same as the reflection part 50 of embodiment 12, and the angle between each reflection part 50 and the bottom wall is 45 °, and by this angle installation, the dimensions in the width W and height H directions of the light source device can be reduced to the maximum. The light emitting device 40 is mounted on the focal position of the lens 60, the light emitted from the light emitting device 40 is first irradiated onto the first reflecting portion 51, for example, the light ab1 is irradiated onto the point b1 of the first reflecting portion 51, is reflected by the mirror surface of the first reflecting portion 51 and then is emitted, and is irradiated onto the point c1 of the second reflecting portion 52, then the light b1c1 is specularly reflected by the second reflecting portion 52, is irradiated onto the point d1 of the third reflecting portion, and is also reflected by the third reflecting portion 53, and the light d1e1 enters the lens 60 and is refracted into parallel light and is emitted.

Each light source unit further includes a first position control device 90 and a second position control device 100, wherein the first position control device 90 is connected to the light emitting device 40, the first position control device is used for adjusting the position of the light emitting device 40 and fixing the adjusted position of the light emitting device 40, the second position control device 100 is connected to the lens 60, and the second position control device is used for adjusting the position of the lens 60 and fixing the adjusted position of the lens 60. The second position control apparatus 100 described above can adjust the position of the lens 60 only in the X and Y directions. The first position control device 90 and the second position control device 100 further ensure that the light source device has good light-emitting parallelism and proper parallel light spot position.

The tilting angle of the mirror can be adjusted as required, but in any case, it should be ensured that ab1+b1c1+c1d1+d1e1=f. This ensures that the light emitted by the lens 60 is collimated.

Example 5

As shown in fig. 8 and 9, the light source device includes a base 10, a frame 20, and a plurality of identical light source units, the frame 20 includes a plurality of frame units 21 arranged along a first direction, the frame units 21 are formed of a first side wall 22, a second side wall 23, a third side wall 24, a fourth side wall 25, a bottom wall 26, a top wall 27, a protector 80, and a light-emitting shroud 28, and the first side wall 22, the second side wall 23, the third side wall 24, the fourth side wall 25, and the bottom wall 26 form a receiving chamber, and the first side wall 22 and the second side wall 23 are disposed opposite to each other.

The light source units are sequentially arranged along the first direction, and each light source unit is composed of one light emitting device 40, one reflecting part 50, one lens 60 and one conductive substrate part 30, wherein the light emitting device 40 is a point light source LED, which can emit red light, and the light emitting device 40 is located at the focal position of the lens 60.

The reflecting portion 50 is a reflecting plane mirror, the reflecting portion 50 is obliquely arranged in the accommodating cavity, one end of the reflecting portion 50 contacts with the second side wall, the other end of the reflecting portion contacts with the bottom wall, and an included angle θ between the reflecting portion 50 and the bottom wall is 45 °. The lenses 60 are convex lenses 60, and the focal length f=120 mm, the width of the lenses 60 is 30mm, and the lenses 60 are closely arranged along the first direction to ensure continuity of the formed spots.

The conductive substrate portion is disposed on the inner surface of the first sidewall by two second fixing members 120, the second fixing members 120 are positioning posts, the light emitting device 40 is disposed on the surface of the conductive substrate portion 30 far from the first sidewall, and the light emitting coaming 28 is disposed on the inner surface of the first sidewall 22 and surrounds the outer periphery of the light emitting device 40. The lens 60 is fixed to the step 272 of the opening sidewall by the first fixing member 110, and the convex lens 60 is placed in parallel with the protection member 80. The conductive substrate portion 30 is mounted in the first mounting groove 221, and the conductive substrate portion 30 is an LED PCB board.

The third side wall 24 and the corresponding lens 60 have a distance d2 in the height direction of the frame 20, and the fourth side wall 25 and the corresponding lens 60 have a distance d3 in the height direction of the frame 20, d2=t2f/L, where t2 is the thickness of the third side wall 24, t2=2mm, d3=t3f/L, where t3 is the thickness of the fourth side wall 25, t3=2mm, f is the focal length of the lens 60, f=120 mm, L is the length of the spot of the light emitted from the light source unit in the first direction, l= = ftgr =166 mm, and the first direction is perpendicular to the thickness direction of the first side wall 22 and perpendicular to the height direction of the frame unit 21.

The third and fourth sidewalls act similarly to the barrier 70, and are intended to block light from entering the adjacent lens 60 as much as possible, thereby affecting the parallelism of the light and not causing the absence of light at the seams of the lenses 60.

Each of the frame units 21 in this embodiment can operate independently. The present embodiment is characterized in that individual frame units 21 are utilized, and are arranged in a line to form a parallel light source of a desired length, and the frame units 21 are fixed to the base 10 by screws, and are integrally connected by the base 10, as shown in fig. 8. Because the base structure is simple, the base with larger length and higher precision can be manufactured easily, so that the requirement of the ultra-long linear parallel light source is met. In this embodiment, the protector 80 is disposed on a side of the lens 60 away from the accommodating chamber, and the protector 80 is a glass-formed light-transmitting plate, and the lens 60 is disposed in parallel with the protector 80. In fact, in this example, the light source device comprises a protective body which can be divided into a plurality of zones along the first direction, each zone being a protective element 80 which, on the one hand, protects the lens 60 against the ingress of dust and, on the other hand, also acts to strengthen the connection. The present embodiment has the advantage that the frame unit 21 can be molded in one step by injection molding, so that the dimensional accuracy is high, and the assembly error is reduced, so that the relative positions of the light emitting device 40, the reflecting portion 50, and the lens 60 can be better ensured, the subsequent adjustment workload is greatly reduced, and the efficiency and the product accuracy are improved. In addition, with the structure, the product is more flexible, and only the frame units 21 are assembled on the base, so that standardized operation can be performed, and the efficiency is improved; meanwhile, the requirements of various lengths can be met by arbitrary combination according to the needs, and the combination is flexible.

From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

1) In the light source device of the present application, the light emitted from the light emitting device irradiates the reflecting portion, most of the light is reflected by the reflecting portion, the direction of the light is changed, and the light irradiates the lens, and according to the principle of linear propagation of the light, when the travel of the light is equal to the focal length of the lens (for example, ab2+b2c2=f, f is the focal length of the lens in fig. 1), the center of the light emitting device corresponds to the focal point O of the lens, so that the light is reflected by the reflecting portion to the lens, refracted by the lens, and then corresponds to the light emitted from the light emitting device at the focal point of the lens, and the light directly irradiates the lens, thereby forming parallel light. Thus, the height H of the frame unit can be greatly reduced, and the volume of the frame unit can be further reduced, thereby reducing the volume of the light source device.

2) The image sensor of the application has smaller volume due to the light source device.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A light source device, characterized in that the light source device comprises:

A frame (20) comprising at least one frame unit (21), said frame unit (21) having a receiving cavity;

at least one light source unit, at least part of which is arranged in the accommodating cavity, wherein the light source unit comprises a light emitting device (40), at least one reflecting part (50) and a lens (60), the light emitting device (40) is arranged in the accommodating cavity, the reflecting part (50) is arranged in the accommodating cavity and is not parallel to the bottom wall (26) of the frame unit (21), the lens (60) is arranged on one side, far away from the bottom wall (26) of the frame unit (21), of the reflecting part (50), and light emitted by the light emitting device (40) sequentially passes through the reflecting part (50) and the lens (60) to form parallel light;

The frame body unit (21) comprises a first side wall (22), a second side wall (23) and a bottom wall (26), wherein the first side wall (22) and the second side wall (23) are oppositely arranged;

The frame unit (21) further includes an emission control section for controlling an emission angle of emitted light of the light emitting device (40);

The bottom wall (26), side wall and/or top wall (27) of the frame unit (21) has a second mounting groove (231), and a portion of the reflecting portion (50) including an end face is mounted in the second mounting groove (231);

one of the frame units (21) is provided;

The light source units are multiple, the light source device further comprises at least one blocking piece (70), the blocking piece (70) is located between the first side wall (22) and the second side wall (23) and divides the accommodated cavity into a plurality of sub accommodating cavities, at least part of the light source units are located in the sub accommodating cavities in a one-to-one correspondence manner, and the blocking piece (70) is used for preventing light rays in one light source unit from entering the lens (60) of the adjacent light source unit;

The blocking member (70) comprises four side surfaces and two surfaces, one side surface and the lens (60) have a distance d1 in the height direction of the frame body (20), and the other three side surfaces are arranged in contact with the side wall and the bottom wall (26) of the frame body (20) respectively;

Further, the lenses (60) in the light source device are all the same, d1=t1f/L, wherein t1 is the thickness of the barrier (70), f is the focal length of the lenses (60), L is the length of the light spot of the outgoing light of the light source unit in a first direction, the first direction is perpendicular to the thickness direction of the first side wall (22) and perpendicular to the height direction of the frame unit (21), and the light transmittance of the barrier (70) is less than or equal to 10%; the barrier (70) is a barrier plate.

2. The light source device according to claim 1, wherein the plurality of frame units (21) are provided, the plurality of frame units (21) being arranged in order along a first direction which is perpendicular to a thickness direction of the first side wall (22) and to a height direction of the frame units (21), the plurality of light source units being provided, at least part of each of the light source units being located in the accommodation chamber in one-to-one correspondence; the frame body unit (21) comprises a third side wall (24) and a fourth side wall (25) which are oppositely arranged, the third side wall (24) and the fourth side wall (25) are respectively connected with the first side wall (22) and the second side wall (23) to form the accommodating cavity,

The third side wall (24) and the corresponding lens (60) have a distance d2 in the height direction of the frame (20), and/or the fourth side wall (25) and the corresponding lens (60) have a distance d3 in the height direction of the frame (20);

The lenses (60) in the light source device are the same, d2=t2f/L, wherein t2 is the thickness of the third side wall (24), d3=t3f/L, wherein t3 is the thickness of the fourth side wall (25), f is the focal length of the lenses (60), L is the length of the light spot of the outgoing light of the light source unit in the first direction, and the first direction is perpendicular to the thickness direction of the first side wall (22) and perpendicular to the height direction of the frame unit (21).

3. A light source device according to claim 2, further comprising a base (10), each of the frame units (21) being provided on the base (10).

4. A light source device according to any one of claims 1-2, characterized in that the light source unit comprises one of the reflecting portions (50).

5. A light source device according to any one of claims 1-2, characterized in that the light source unit comprises at least two of the reflecting portions (50), in which light emitted by the light emitting means (40) passes sequentially through at least two of the reflecting portions (50) and one of the lenses (60) forming a parallel light emission.

6. The light source device according to claim 4, wherein the light source unit includes three reflection parts (50), the three reflection parts (50) being a first reflection part (51), a second reflection part (52) and a third reflection part (53), respectively, and the light emitted from the light emitting element (40) sequentially passes through the first reflection part (51), the second reflection part (52) and the third reflection part (53).

7. A light source device according to claim 6, wherein the light emitting means (40) is provided on an inner surface of the first side wall (22) or in the first side wall (22), one end face of the third reflecting portion (53) is provided on the first side wall (22), the other end face is provided on the bottom wall (26),

One end face of the first reflecting portion (51) is arranged on the bottom wall (26), the other end face of the first reflecting portion is arranged on the second side wall (23), one end face of the second reflecting portion (52) is arranged on the top wall (27), the other end face of the second reflecting portion is arranged on the second side wall (23), or one end face of the second reflecting portion (52) is arranged on the bottom wall (26), the other end face of the second reflecting portion is arranged on the second side wall (23), one end face of the first reflecting portion (51) is arranged on the top wall (27), and the other end face of the first reflecting portion is arranged on the second side wall (23).

8. A light source arrangement according to any one of claims 1-2, characterized in that each light emitting device (40) is a point light source.

9. A light source device according to any one of claims 1-2, characterized in that in the light source unit, the angle between each reflecting portion (50) and the bottom wall (26) is θ,0 ° < θ <180 °.

10. A light source device as claimed in claim 9, characterized in that θ = 45 °.

11. The light source arrangement according to any one of claims 1 to 2, characterized in that the light emitting device (40) is arranged within the first side wall (22) or on an inner surface of the first side wall (22); the light source unit further comprises a conductive substrate part (30), wherein the conductive substrate part (30) is arranged on the inner surface of the first side wall (22) or in the first side wall (22), and the light emitting device (40) is arranged on the surface, close to the accommodating cavity, of the conductive substrate part (30); the first side wall (22) has a first mounting groove (221) therein, and the conductive substrate portion (30) and the light emitting device (40) are mounted in the first mounting groove (221).

12. The light source device according to claim 1, wherein the first side wall (22) has a first mounting groove (221) therein, the light emitting device (40) is mounted in the first mounting groove (221), the light emitting control portion is a light emitting groove (222), the light emitting groove (222) is located in the first side wall (22), one side of the light emitting groove (222) is communicated with the first mounting groove (221), the other side of the light emitting groove (222) is communicated with the accommodating cavity, and a center of the light emitting device (40) is on an extension line of an axis of the light emitting groove (222).

13. A light source device according to claim 1, wherein the light emitting means (40) is provided on an inner surface of the first side wall (22), the light emitting control portion is a light emitting shroud (28), and the light emitting shroud (28) is provided on an inner surface of the first side wall (22) and surrounds an outer periphery of the light emitting means (40).

14. A light source device according to any one of claims 1 to 2, wherein the reflecting portion (50) is a plane mirror, the lens (60) is a convex lens or a fresnel lens, the light source unit has a plurality, and a corresponding plurality of the lenses (60) in the plurality of light source units are disposed in contact in order.

15. A light source arrangement according to any one of claims 1-2, characterized in that at least one of the light source units further comprises a first position control device (90), the first position control device (90) being connected to the light emitting means (40), the first position control device being for adjusting the position of the light emitting means (40), the light source arrangement further comprising a second position control device (100), the second position control device (100) being connected to the lens (60), the second position control device being for adjusting the position of the lens (60).

16. A light source device according to any one of claims 1 to 2, wherein at least one of the frame units (21) further comprises a protector (80), the protector (80) covering at least a portion of a surface of the lens (60) remote from the reflecting portion (50), the protector (80) having a light transmittance of 90% or more.

17. The light source device according to any one of claims 1 to 2, wherein a top wall (27) of the frame unit (21) has an opening (271), and the lens (60) is disposed within the opening (271) or is erected on one side of the opening (271).

18. A light source device according to claim 1 or 2, wherein a plurality of said lenses (60) are identical and a plurality of said light emitting devices (40) are identical.

19. An image sensor comprising a light source device, characterized in that the light source device is the light source device of any one of claims 1 to 18.