Optical module, optical system, and vehicle lamp

Abstract

An optical module (111), an optical system (110), and a vehicle lamp (100), relating to the technical field of vehicle lamps. The optical module (111) comprises a first light source (1111), and a primary optical element (1112) and a light-emergent lens (112) which are sequentially arranged in the transmission direction of a light path, wherein the primary optical element (1112) is a transparent element and comprises a light-incident surface (1112a), a fully reflecting surface (1112c) and a first light-emergent surface (1112d); the light-incident surface (1112a) and the fully reflecting surface (1112c) are arranged opposite each other; a cutoff line structure is arranged at the boundary of the fully reflecting surface (1112c) close to the light-incident surface (1112a); and light emitted by the first light source (1111) is incident from the light-incident surface of the primary optical element (1112), is reflected by the fully reflecting surface (1112c), is then emitted from the first light-emergent surface (1112d) and passes through the light-emergent lens (112) to form on a target plane a low beam pattern having a cut-off line. A cutoff line structure formed only by a mirror is omitted, such that the mirror is omitted, thereby simplifying the structure of the optical system, and saving on the production costs.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of vehicle lamps, and specifically relates to an optical module, an optical system, and a vehicle lamp.BACKGROUND ART

[0002] The vehicle lamps are lighting tools for vehicles traveling on the road at night and also indication tools for sending various vehicle driving signals, which play an important role in ensuring safe driving of vehicles. With the continuous development of automobile lighting technology, more requirements have been put forward for the functions of the vehicle lamps.

[0003] In the vehicle lamp illumination, the low-beam light pattern needs to have a cutoff line in the horizontal direction to avoid dazzling drivers of other vehicles on the road and affecting driving safety. In the prior art, the reflector is generally used as a primary optical device, wherein a cutoff line structure is formed by a reflecting surface boundary to form a cutoff line of a low-beam light pattern. However, the reflector needs to be prefabricated into a body with a reflecting surface, and then a reflecting film is formed on the body surface through a coating process. The film material includes aluminum, and silver, etc., which results in higher production cost, higher energy consumption, and influences the production rate. The coating process itself will also cause environmental pollution and other defects, such as losses due to the higher rate of coating failure.SUMMARY

[0004] The objective of the present disclosure is to provide an optical module, an optical system, and a vehicle lamp, which can simplify the optical module structure, eliminate the need for an aluminum-coated reflector, and save production cost.

[0005] The embodiments of the present disclosure are realized in the following technical solutions.

[0006] One aspect of the embodiments of the present disclosure provides an optical module, including a first light source, and a primary optical component and a light-emitting lens which are sequentially arranged in a transmission direction of a light path, wherein the primary optical component is a transparent component including a light-incident surface, a total reflecting surface, and a first light-emitting surface. The light-incident surface and the total reflecting surface are oppositely arranged; a cutoff line structure is arranged on a boundary of the total reflecting surface close to the light-incident surface; and a light emitted by the first light source enters the primary optical component from its light-incident surface, is reflected by the total reflecting surface, emitted by the first light-emitting surface, and then passes through the light-emitting lens, thereby forming a low-beam light pattern with a cutoff line on a target plane.

[0007] Optionally, as an optional embodiment, the total reflecting surface is a parabolic reflecting surface or a quasi-parabolic reflecting surface.

[0008] Optionally, as an optional embodiment, the optical module further includes a second light source, and the primary optical component further includes a guiding surface for receiving the light emitted from the second light source. The light emitted from the second light source enters the primary optical component through the guiding surface, is emitted from the first light-emitting surface, and then emitted after passing through the light-emitting lens.

[0009] Optionally, as an optional embodiment, a guiding surface is arranged on one side of the first light-emitting surface away from the light-emitting lens, and the second light source is arranged corresponding to the guiding surface, wherein the light emitted from the second light source enters the primary optical component through the guiding surface, and is transmitted to the first light-emitting surface for emission.

[0010] Optionally, as an optional embodiment, the guiding surface includes an auxiliary light-incident surface and an auxiliary reflecting surface; the auxiliary light-incident surface and the light-incident surface are located on the same side; the auxiliary reflecting surface is arranged on one side of the first light-emitting surface away from the light-emitting lens; an angle exists between the auxiliary light-incident surface and the auxiliary reflecting surface; and the light emitted from the second light source passes through the auxiliary light-incident surface and enters the primary optical component, and is reflected by the auxiliary reflecting surface and emitted by the first light-emitting surface.

[0011] Optionally, as an optional embodiment, the auxiliary reflecting surface is a parabolic reflecting surface or a quasi-parabolic reflecting surface.

[0012] Optionally, as an optional embodiment, the first light-emitting surface is a cylindrical surface, and the first light-emitting surface is a curved surface formed by stretching a sectional line in the vertical direction along a sectional line in the horizontal direction, and is configured to collimate light in a single horizontal direction.

[0013] Optionally, as an optional embodiment, the light-emitting lens has a second light-emitting surface; the second light-emitting surface is a cylindrical surface; and the second light-emitting surface is a curved surface formed by stretching a sectional line in the horizontal direction along a sectional line in the vertical direction, and is configured to collimate light in a single vertical direction.

[0014] Another aspect of the embodiments of the present disclosure provides an optical system, including at least one optical module according to any one of the above.

[0015] Optionally, as an optional embodiment, a plurality of primary optical components are provided, and the plurality of primary optical components are arrayed in a transverse direction and integrally molded; and a plurality of light-emitting lenses are provided, and the plurality of light-emitting lenses are arrayed in the transverse direction and integrally molded.

[0016] Optionally, as an optional embodiment, the optical system further includes a circuit board, and the first light source and the second light source of the optical system are arranged on the circuit board.

[0017] The embodiments of the present disclosure further provide a vehicle lamp, including the optical system according to any one of the above.

[0018] The embodiments of the present disclosure include the following beneficial effects.

[0019] The optical module, the optical system, and the vehicle lamp provided by the present disclosure includes a first light source, and a primary optical component and a light-emitting lens which are sequentially arranged in a transmission direction of a light path. The primary optical component is a transparent component including a light-incident surface, a total reflecting surface, and a first light-emitting surface. A cutoff line structure is arranged on a boundary of the total reflecting surface close to the light-incident surface. The light emitted by the first light source enters the primary optical component via its light-incident surface, is reflected by the total reflecting surface, emitted from the first light-emitting surface, and then passes through the light-emitting lens, thereby projecting and forming a low-beam light pattern with a cutoff line on a target plane. By using the total reflecting surface to form the cutoff line structure, the need for a reflector with a coated film to form a cutoff line is omitted, which simplifies the structure of the optical system and saves certain production costs.BRIEF DESCRIPTION OF DRAWINGS

[0020] FIG. 1 shows a structure schematic diagram of a vehicle lamp provided by the embodiments of the present disclosure; FIG. 2 shows a light path diagram of an optical system in a vehicle lamp provided by the embodiments of the present disclosure; FIG. 3 shows a schematic diagram of a low-beam light pattern of an optical system in a vehicle lamp provided by the embodiments of the present disclosure; FIG. 4 shows another structure schematic diagram of a vehicle lamp provided by the embodiments of the present disclosure; FIG. 5 shows another light path diagram of an optical system in a vehicle lamp provided by the embodiments of the present disclosure; FIG. 6 shows another structure schematic diagram of a vehicle lamp provided by the embodiments of the present disclosure; FIG. 7 shows another light path diagram of an optical system in a vehicle lamp provided by the embodiments of the present disclosure; FIG. 8 shows a structure schematic diagram of a primary optical component in an optical module provided by the embodiments of the present disclosure; FIG. 9 shows a schematic diagram of a high-beam light pattern of an optical system in a vehicle lamp provided by the embodiments of the present disclosure; and FIG. 10 shows a schematic diagram of a superimposed high-beam and low-beam light pattern of an optical system in a vehicle lamp provided by the embodiments of the present disclosure.

[0021] Reference numbers: 100-vehicle lamp; 110-optical system; 111-optical module; 1111-first light source; 1112-primary optical component; 1112a-light-incident surface; 1112b-transition surface; 1112c-total reflecting surface; 1112d-first light-emitting surface; 1112e-guiding surface; 1113-second light source; 112-light-emitting lens; 113-circuit board; 120-heat sink.DETAILED DESCRIPTION OF EMBODIMENTS

[0022] In order to make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be described clearly and completely as follows in conjunction with drawings in the embodiments of the present disclosure. It is clear that the embodiments described are partial embodiments of the present disclosure, and not all of the embodiments. The assembly in embodiments of the present disclosure generally described and shown in the drawings herein can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present disclosure provided in the drawings is not intended to limit the scope of the present disclosure for which protection is claimed, but only represents selected embodiments of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without inventive efforts shall fall within the scope of protection of the present disclosure.

[0024] It should be noted that similar symbols and letters denote similar items in the following drawings. Therefore, once an item has been defined in one of the drawings, it does not need to be further defined and explained in subsequent drawings.

[0025] It should be noted that in the description of the embodiments of the disclosure, the terms "first", "second", etc., are used only to distinguish descriptions, and are not to be understood as indicating or implying a relative importance.

[0026] Referring to FIG. 1, FIG. 2 and FIG. 3, the embodiment provides an optical module 111, including a first light source 1111, and a primary optical component 1112 and a light-emitting lens 112 which are sequentially arranged in a transmission direction of a light path. The primary optical component 1112 is a transparent component, and the primary optical component 1112 includes a light-incident surface 1112a, a total reflecting surface 1112c, and a first light-emitting surface 1112d. A cutoff line structure is arranged on a boundary of the total reflecting surface 1112c close to the light-incident surface 1112a, and the light emitted by the first light source 1111 enters the primary optical component 1112 via the light-incident surface 1112a, is reflected by the total reflecting surface 1112c and emitted by the first light-emitting surface 1112d, and then passes through the light-emitting lens 112, thereby projecting and forming a low-beam light pattern with a cutoff line on a target plane. It is to be noted that the target plane can be a vertical plane arranged 25 meters in front of the vehicle.

[0027] Specifically, the light emitted from the first light source 1111 enters the primary optical component 1112 via the light-incident surface 1112a, is intercepted by the cutoff line structure, reflected by the total reflecting surface 1112c, and then emitted from the first light-emitting surface 1112d. The primary optical component 1112 is processed as a transparent component including the total reflecting surface 1112c, the light-incident surface 1112a, and the first light-emitting surface 1112c, and the boundary of the total reflecting surface 1112c close to the light-incident surface 1112a is taken as the cutoff line structure. Therefore, the light enters the primary optical component 1112 via the light-incident surface 1112a, is intercepted by the cutoff line structure, reflected by the total reflecting surface 1112c, and then emitted by the first light-emitting surface 1112d. Finally, after passing through the light-emitting lens 112, it projects and forms a low-beam light pattern with a cutoff line on the target plane. The total reflecting surface 1112c causes the incident light to undergo the total reflection phenomenon, thereby reducing light loss. The total reflection phenomenon refers to the phenomenon where the light is incident to the interface of the two media and is only reflected without refraction. When the light is emitted from the light-dense medium to the light-rear medium, the refraction angle will be larger than the incidence angle. When the incidence angle increases to a certain value, the refraction angle will reach 90 °. At this time, no refracted light will appear in the light-rear medium, and when the incidence angle is larger than or equal to the above value, the refraction phenomenon will no longer exist. In the present disclosure, by using the total reflection phenomenon, the light transmitted to the total reflecting surface 1112c undergoes the total reflection, and then is emitted from the first light-emitting surface 1112d, thereby reducing the loss of light.

[0028] The optical module 111 provided by the present disclosure includes a first light source 1111, and a primary optical component 1112 and a light-emitting lens 112 which are sequentially arranged in a transmission direction of a light path. The primary optical component 1112 is a transparent component, and the primary optical component 1112 includes a light-incident surface 1112a, a total reflecting surface 1112c, and a first light-emitting surface 1112d, wherein a cutoff line structure is arranged on a boundary of the total reflecting surface 1112c close to the light-incident surface 1112a; and the light emitted by the first light source 1111 enters the primary optical component 1112 via the light-incident surface 1112a, is intercepted by the cutoff line structure, reflected by the total reflecting surface 1112c, and emitted by the first light-emitting surface 1112d. After passing through the light-emitting lens 112, it projects and forms a low-beam light pattern with a cutoff line on a target plane. The optical module 111 provided by the present disclosure uses a transparent component as the primary optical component 1112, and uses the boundary of the total reflecting surface 1112c to form the cutoff line structure, which simplifies the structure of the optical module 111, eliminates the need for the reflector with a coated film, and saves the production cost.

[0029] In one feasible embodiment of the present disclosure, as shown in FIG. 1, the total reflecting surface 1112c is a parabolic reflecting surface or a quasi-parabolic reflecting surface.

[0030] Specifically, the total reflecting surface 1112c is provided as a parabolic reflecting surface or a quasi-parabolic reflecting surface Thus, the total reflecting surface 1112c can converge the diffused light emitted from the light source, and the light reflected from the total reflecting surface 1112c is parallel light or nearly parallel light. This can reduce the size of the light-incident surface of the light-emitting lens 112 corresponding to the primary optical component 1112. Without the need for a large light-emitting lens 112, the light emitted from the primary optical component 1112 can be ensured to enter the light-emitting lens 112 as much as possible after passing through the incidence surface of the light-emitting lens 112, so as to reduce the loss of the light and ensure the light efficiency.

[0031] It should be noted that in the context of the present disclosure, when the term "quasi-parabolic surface" is used, it should be understood as a surface shape that is close to the parabolic surface and has optical characteristics similar to those of the parabolic surface. For example, similar to the parabolic reflecting surface, when a quasi-parabolic surface is taken as a reflecting surface, the light emitted from a light source located at or near the focal point of the quasi-parabolic surface can be emitted in a substantially parallel manner after being reflected by the quasi-parabolic surface.

[0032] In one feasible embodiment of the present disclosure, as shown in FIG. 4-FIG. 7, the optical module 111 further includes a second light source 1113, and the primary optical component 1112 further includes a guiding surface 1112e for receiving the light emitted from the second light source 1113. The light emitted from the second light source 1113 passes through the guiding surface 1112e and enters the primary optical component 1112. Subsequently, it is emitted from the first light-emitting surface 1112d of the primary optical component 1112, and then passes through the light-emitting lens 112 for emission. One end of the guiding surface 1112e is connected to the total reflecting surface 1112c via the transition surface 1112b, and the other end of the guiding surface 1112e is connected to the light-incident surface 1112a.

[0033] The first light source 1111 and the second light source 1113 can both be provided as LED light sources. The LED light source has gradually become the main configuration of the automobile lamp 100. The LED light source, as a cold light source, has a lower temperature, which reduces the energy loss during the light transmission process of the first light source 1111 and the second light source 1113, and extends the service life of the first light source 1111 and the second light source 1113. According to different application scenarios, the colors of the first light source 1111 and the second light source 1113 can be set according to different needs. For example, the first light source 1111 and the second light source 1113 can be white light sources, yellow light sources, or colored light sources that can change colors.

[0034] In addition, the second light source 1113 can be applied in high beam lighting scenarios as a high beam source, and can also be applied in a vehicle signal light as a signal light source. The optical module 111 can realize the reuse of the front light and the signal light.

[0035] In one feasible embodiment of the present disclosure, as shown in FIG. 4 and FIG. 5, a guiding surface 1112e is located on one side of the first light-emitting surface 1112d away from the light-emitting lens 112, and the second light source 1113 is arranged corresponding to the guiding surface 1112e. The light emitted from the second light source 1113 passes through the guiding surface 1112e and is incident to the primary optical component 1112, and it is then transmitted to the first light-emitting surface 1112d for emission.

[0036] The guiding surface 1112e can be provided as an arc surface, which has the effect of converging light. It converges the diffused light emitted from the second light source 1113, and thus more light can be ensured to enter the primary optical component 1112 and reach the first light-emitting surface 1112d, thereby reducing the loss of light and ensuring the light efficiency. In addition, after the light is converged, there is no need for a large-sized first light-emitting surface 1112d and the corresponding light-emitting lens 112, and the light emitted from the first light-emitting surface 1112d can enter the light-emitting lens 112 as much as possible.

[0037] In one feasible embodiment of the present disclosure, as shown in FIG. 6 and FIG. 7, the guiding surface 1112e includes an auxiliary light-incident surface 1112e1 and an auxiliary reflecting surface 1112e2; the auxiliary light-incident surface 1112e1 and the light-incident surface 1112a are located on the same side; the auxiliary reflecting surface 1112e2 is arranged on one side of the first light-emitting surface 1112d away from the light-emitting lens 112; an angle exists between the auxiliary light-incident surface 1112e1 and the auxiliary reflecting surface 1112e2. Therefore, the light can reach the auxiliary reflecting surface 1112e2 for reflection after passing through the auxiliary light-incident surface 1112e1, and the light emitted from the second light source 1113 passes through the auxiliary light-incident surface 1112e1 and enters the primary optical component 1112, and is reflected by the auxiliary reflecting surface 1112e2 and emitted from the first light-emitting surface 1112d.

[0038] Specifically, the light emitted from the second light source 1113 passes through the auxiliary light-incident surface 1112e1 and enters the primary optical component 1112, and the auxiliary reflecting surface 1112e2 is provided as a total reflecting surface. By using the total reflection phenomenon, the light entering the auxiliary reflecting surface 1112e2 will undergo the total reflection, and then is transmitted to the first light-emitting surface 1112d for emission, thereby reducing the loss of the light.

[0039] Further, one end of the auxiliary reflecting surface 1112e2 is connected to the auxiliary light-incident surface 1112e1; the other end of the auxiliary reflecting surface 1112e2 is connected to one end of the transition surface 1112b away from the total reflecting surface 1112c; and the auxiliary light-incident surface 1112e1 and the light-incident surface 1112a are connected and located in the same plane.

[0040] When the second light source 1113 emits light and is applied to the high beam illumination, the high-beam light pattern projected to the target plane is shown in FIG. 9; and when the first light source 1111 and the second light source 1113 emit light at the same time, the superimposed high-beam and low-beam light pattern projected to the target plane is shown in FIG. 10.

[0041] In one feasible embodiment of the present disclosure, as shown in FIG. 7, the auxiliary reflecting surface 1112e2 is a parabolic reflecting surface or a quasi-parabolic reflecting surface.

[0042] Specifically, the light emitted from the second light source 1113 passes through the auxiliary light-incident surface 1112e1 and enters the primary optical component 1112, and is reflected by the auxiliary reflecting surface 1112e2 and emitted from the first light-emitting surface 1112d. The auxiliary reflecting surface 1112e2 is a parabolic reflecting surface or a quasi-parabolic reflecting surface. The parabolic reflecting surface or the quasi-parabolic reflecting surface converges the diffused light emitted from the second light source 1113 into parallel light or nearly parallel light to ensure the convergence degree of the emitted light, thereby increasing the light energy of the high-beam light pattern formed on the target plane after the light passes through the light-emitting lens 112. In addition, after the light is converged, there is no need for a large-sized first light-emitting surface 1112d and the corresponding light-emitting lens 112, and the light can enter the light-emitting lens 112 as much as possible, so as to ensure the luminous efficiency.

[0043] Further, the curvature of the longitudinal section of the auxiliary reflecting surface 1112e2 is set to be consistent with the curvature of the longitudinal section of the total reflecting surface 1112c. Therefore, when the first light source 1111 and the second light source 1113 emit light at the same time, the light reflected from the total reflecting surface 1112c and the light from the auxiliary reflecting surface 1112e2 will not interfere with each other, and the superimposed high-beam and low-beam light pattern connects naturally at the junction of the light pattern (as shown in FIG. 10).

[0044] In one feasible embodiment of the present disclosure, as shown in FIG. 4 and FIG. 5, the first light-emitting surface 1112d is a cylindrical surface.

[0045] Specifically, the first light-emitting surface 1112d is provided as the cylindrical surface to collimate the light passing through the first light-emitting surface 1112d in a single direction, so as to converge the light, ensure the light energy, and reduce the size of the light-emitting lens 112. Further, the first light-emitting surface 1112d has a horizontal unidirectional collimation to the light, and the first light-emitting surface 1112d is a curved surface formed by stretching a sectional line in the vertical direction along a sectional line in the horizontal direction.

[0046] In one feasible embodiment of the present disclosure, the light-emitting lens 112 has a second light-emitting surface 112a, and the second light-emitting surface 112a is a cylindrical surface.

[0047] Specifically, the second light-emitting surface 112a is provided as the cylindrical surface to collimate the light passing through the second light-emitting surface 112a in a single direction, so as to converge the light and ensure the light energy of the light pattern. Further, the second light-emitting surface 112a has a vertical unidirectional collimation to the light, and the second light-emitting surface 112a is a curved surface formed by stretching a sectional line in the horizontal direction along a sectional line in the vertical direction.

[0048] When the second light-emitting surface 112a of the light-emitting lens 112 is a cylindrical surface and the first light-emitting surface 1112d of the primary optical component 1112 is also a cylindrical surface, and both light-emitting surfaces can collimate the light in a single direction, the transverse section line of the second light-emitting surface 112a is perpendicular to the longitudinal line section of the first light-emitting surface 1112d. The light emitted from the light source 1111 is converged by the first light-emitting surface 1112d of the primary optical component 1112, and the light is collimated in one direction. When the light enters the light-emitting lens 112 and is emitted from the second light-emitting surface 112a of the light-emitting lens 112, the light is converged again and the second light-emitting surface 112a collimates the light in the other direction. At this time, the light pattern obtained by projecting the light through the light-emitting lens 112 has a higher light energy because the light is more concentrated.

[0049] Referring to FIG. 1-FIG. 7, the embodiment provides an optical system 110, including at least one optical module 111 of the foregoing embodiments.

[0050] In one feasible embodiment of the present disclosure, a plurality of primary optical components 1112 are provided, and the plurality of primary optical components 1112 are arrayed in a transverse direction and integrally molded. A plurality of light-emitting lenses 112 are provided, and the plurality of light-emitting lenses 112 are arrayed in the transverse direction and integrally molded. The first light-emitting surface 1112d of each primary optical component 1112 collimates the light in a single direction, and the longitudinal section line of the first light-emitting surface 1112 is perpendicular to the transverse sectional line of the second light-emitting surface 112a of the light-emitting lens 112. The light is converged in the horizontal direction by the first light-emitting surface 1112d of the primary optical component 1112, the light is converged in the vertical direction by the second light-emitting surface 112a of the light-emitting lens 112, and the plurality of primary optical components 1112 are arrayed in the transverse direction. Finally, the light is projected on the target plane to obtain the required superimposed light pattern.

[0051] In one feasible embodiment of the present disclosure, as shown in FIG. 4-FIG. 7, the optical system 110 further includes a circuit board 113, and the first light source 1111 and the second light source 1113 of the optical module 111 are arranged on the circuit board 113.

[0052] Specifically, the circuit board 113 is electrically connected to the first light source 1111 and the second light source 1113, so that the operation device connected to the circuit board 113 can control the turning on and turning off of the first light source 1111 and the second light source 1113 respectively, so as to make the control of the optical system 110 more convenient. The first light source 1111 and the second light source 1113 can be turned on together, or the first light source 1111 and the second light source 1113 can be turned on separately, so as to adapt to the different lighting requirements. Further, as shown in FIG. 7, the first light source 1111 and the second light source 1113 can be arranged on the same side of the same circuit board 113, which reduces the use of the circuit board and reduces the cost.

[0053] Referring to FIG. 4 and FIG. 6, the present embodiment provides a vehicle lamp 100, including the optical system 110 in the foregoing embodiment, and further including a heat sink 120 connected to the optical system 110.

[0054] Specifically, the heat sink 120 includes a heat sink plate and a plurality of heat sink sheets arranged on the heat sink plate. The plurality of heat sink sheets are used to increase the overall heat dissipation area of the heat sink 120, so that the heat sink 120 can quickly absorb the heat emitted by the first light source 1111 and the second light source 1113. The heat emitted by the first light source 1111 and the second light source 1113 is transferred to the heat sink plate first, and then subsequently transferred to the heat sink sheets, which avoids that the heat emitted by the first light source 1111 and the second light source 1113 affects their work efficiency, thus ensuring that the first light source 1111 and the second light source 1113 can work stably for a long time.

[0055] The foregoing are merely some embodiments of the present disclosure, and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present disclosure, shall be included in the scope of protection of the present disclosure.Industrial Applicability

[0056] The optical module, the optical system, and the vehicle lamp are provided by the present disclosure. The reflector is eliminated, which saves production cost and simplifies the structure of the optical module. It can also realize the low-beam light pattern having a cutoff line, and can be more flexibly applied in the actual structure. The optical system and the vehicle lamp of the present disclosure can be applied in the front light of the automobile field, and the optical system of the present disclosure can be applied in other illumination according to the requirements.

Claims

1. An optical module, comprising a first light source, and a primary optical component and a light-emitting lens that are sequentially arranged in a transmission direction of a light path, wherein the primary optical component is a transparent component comprising a light-incident surface, a total reflecting surface, and a first light-emitting surface; the light-incident surface and the total reflecting surface are oppositely arranged; a cutoff line structure is arranged on a boundary of the total reflecting surface close to the light-incident surface; and a light emitted by the first light source enters the primary optical component via a light-incident surface, is reflected by the total reflecting surface, emitted from the first light-emitting surface, and then passes through the light-emitting lens, thereby forming a low-beam light pattern with a cutoff line on a target plane.

2. The optical module according to claim 1, wherein the total reflecting surface is a parabolic reflecting surface or a quasi-parabolic reflecting surface.

3. The optical module according to claim 1, wherein the optical module further comprises a second light source, and the primary optical component further comprises a guiding surface for receiving light emitted from the second light source; the light emitted from the second light source enters the primary optical component via the guiding surface and is emitted from the first light-emitting surface, and passes through the light-emitting lens for emission.

4. The optical module according to claim 3, wherein the guiding surface is arranged on one side of the first light-emitting surface away from the light-emitting lens, the second light source is arranged corresponding to the guiding surface, and the light emitted from the second light source enters the primary optical component through the guiding surface and is transmitted to the first light-emitting surface for emission.

5. The optical module according to claim 3, wherein the guiding surface comprises an auxiliary light-incident surface and an auxiliary reflecting surface; the auxiliary light-incident surface and the light-incident surface are located on a same side; the auxiliary reflecting surface is arranged on one side of the first light-emitting surface away from the light-emitting lens; an angle exists between the auxiliary light-incident surface and the auxiliary reflecting surface; and the light emitted from the second light source passes through the auxiliary light-incident surface and enters the primary optical component, and is reflected by the auxiliary reflecting surface and emitted from the first light-emitting surface.

6. The optical module according to claim 5, wherein the auxiliary reflecting surface is a parabolic reflecting surface or a quasi-parabolic reflecting surface.

7. The optical module according to claim 1, wherein the first light-emitting surface is a cylindrical surface, and the first light-emitting surface is a curved surface formed by stretching a sectional line in a vertical direction along the sectional line in a horizontal direction, and is configured to collimate light in the single horizontal direction.

8. The optical module according to claim 1, wherein the light-emitting lens has a second light-emitting surface; the second light-emitting surface is a cylindrical surface; and the second light-emitting surface is a curved surface formed by stretching the sectional line in the horizontal direction along the sectional line in the vertical direction, and is configured to collimate light in a single vertical direction.

9. An optical system, comprising at least one optical module according to any one of claims 1-8.

10. The optical system according to claim 9, wherein a plurality of primary optical components of the optical module are provided, and the plurality of primary optical components are arrayed in a transverse direction and integrally molded; and a plurality of light-emitting lenses of the optical module are further provided, and the plurality of light-emitting lenses are arrayed in the transverse direction and integrally molded.

11. The optical system according to claim 9, wherein the optical system further comprises a circuit board, and the first light source and the second light source of the optical system are arranged on the circuit board.

12. A vehicle lamp, comprising the optical system according to any one of claims 9-11.

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