CN218481758U - Separating optical machine, separating projector and separating projection system - Google Patents

Abstract

The application relates to the technical field of projection display, and discloses a separated optical machine, a separated projector and a separated projection system, wherein the separated optical machine comprises a light source module, an optical machine module and a flexible transmission piece, and the light source module is used for sending a first signal; the optical-mechanical module is arranged on a transmission path of the light source module and used for receiving the first signal and modulating the first signal; the flexible transmission piece is connected between the light source module and the optical-mechanical module and used for transmitting the first signal to the optical-mechanical module, wherein the flexible transmission piece is further used for transmitting a first control signal in the optical-mechanical module to the light source module, the first control signal is used for modulating the light source module, and the transmission direction of the first signal is opposite to that of the first control signal. Through the mode, the light source module and the optical machine module are designed separately, so that the installation flexibility and the brightness index of the projection system can be greatly improved.

Description

Separating optical machine, separating projector and separating projection system

Technical Field

The present application relates to the field of projection display technologies, and in particular, to a separated optical machine, a separated projector, and a separated projection system.

Background

Projection devices applied to automobiles include projection displays of intelligent cabins and laser pixel headlamps, and due to the limited size of installation space and the limited heat dissipation conditions, it is often difficult for the projection devices to find an ideal installation position.

SUMMERY OF THE UTILITY MODEL

Accordingly, the present application provides a separation type optical machine, a separation type projector and a separation type projection system which can improve the installation flexibility of the projection system.

On one hand, the application provides a separated optical-mechanical device, which comprises a light source module, an optical-mechanical module and a flexible transmission piece, wherein the light source module is used for sending a first signal; the optical-mechanical module is arranged on a transmission path of the light source module and used for receiving the first signal and modulating the first signal; the flexible transmission piece is connected between the light source module and the optical-mechanical module and used for transmitting the first signal to the optical-mechanical module, wherein the flexible transmission piece is further used for transmitting a first control signal in the optical-mechanical module to the light source module, the first control signal is used for modulating the light source module, and the transmission direction of the first signal is opposite to that of the first control signal.

In another aspect, the present application provides a separated projector, including the above separated optical engine and a lens, where the separated optical engine is configured to generate modulated light; the lens is used for converting the modulated light into an imaging light beam and emitting the imaging light beam out.

In another aspect, the present application provides a split type projection system, which includes the split type projector and a projection screen, wherein the split type projector is configured to emit an image beam and emit the image beam, and the projection screen is disposed on an optical path of the image beam emitted by the split type projector and configured to receive the image beam.

The technical scheme provided by the application can achieve the following beneficial effects: the light source module and the optical-mechanical module are mutually independent and are connected through the flexible transmission piece, so that the light source module and the optical-mechanical module can be respectively arranged in different places, the installation flexibility and the brightness index of the optical-mechanical module can be greatly improved, the light source module and the optical-mechanical module can be designed according to high-grade water resistance and dust resistance, and the stability of the performance of equipment is improved and the service life of the equipment is prolonged; the flexible transmission piece can transmit a first signal generated by the light source module to the optical machine module and also can transmit a first control signal generated by the optical machine module to the light source module, namely, the first control signal and the second control signal are transmitted simultaneously, so that the equipment is simplified, and the projection system is convenient to install and use.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:

fig. 1 is a block schematic diagram of a split projector provided in some embodiments of the present application;

fig. 2 is a schematic structural diagram of a separated projector provided in embodiment 1 of the present application;

fig. 3 is a schematic structural diagram of a separated projector provided in embodiment 2 of the present application;

fig. 4 is a schematic structural diagram of a separated projector provided in embodiment 3 of the present application.

Fig. 5 is a schematic structural diagram of a separated projector provided in embodiment 4 of the present application.

Fig. 6 is a schematic diagram of the optical paths of the first signal and the second signal in the plating film in fig. 5.

Fig. 7 is a schematic view of the structure of fig. 5 in different positions of the coating film in the separated projector.

Fig. 8 is a schematic structural diagram of a separated projector provided in embodiment 5 of the present application.

Fig. 9 is a schematic diagram of the optical path of the first signal in the plating film in fig. 8.

Fig. 10 is a schematic structural diagram of a separated projector provided in embodiment 6 of the present application.

Fig. 11 is a schematic diagram of the optical path of the optical splitter in fig. 10.

Fig. 12 is a schematic structural diagram of a separation type projector according to embodiment 7 of the present application.

Fig. 13 is a schematic structural diagram of a separation type projector according to embodiment 8 of the present application.

Fig. 14 is a schematic structural diagram of a vehicle using the split projector according to embodiment 9 of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The light engine of the projection system mainly comprises a light source module and an optical machine module, which are designed according to integration at present. With the increasing use of projection in automobiles, such as roof displays, side window transparent displays, rear window displays, automobile headlights, etc., it is a challenging need to install a projection device that is as bright as possible in a limited space.

Through research, the volume of the light source module approximately occupies three fourths of the light engine, the heating value occupies more than 80% of the heating value of the whole light engine, and the volume and the heating value of the optical-mechanical module for displaying are small.

Based on this, this application provides a disconnect-type system, disconnect-type projection system mainly includes disconnect-type projecting apparatus and projection screen, wherein the disconnect-type projecting apparatus includes disconnect-type ray apparatus and camera lens, disconnect-type ray apparatus is the ray apparatus in the broad sense, including light source module and ray apparatus module, be used for producing modulated light, and with modulated light outgoing to the camera lens, the camera lens converts modulated light into image beam, and with image beam projection to the projection screen show, the projection screen sets up in the light path of disconnect-type projecting apparatus outgoing image beam, be used for receiving image beam. The separated projection system may be used for roof display, side window transparent display, rear window display, automobile headlight, etc. of the vehicle-mounted service, and may also be used for screen display, television display, etc., and is not limited specifically herein.

Specifically, please refer to fig. 1, fig. 1 is a schematic structural diagram of a separated projector according to some embodiments of the present application. The separated projector 1 includes a light source module 10, an optical-mechanical module 20, and a flexible transmission member 30. The light source module 10 is used for emitting a first signal; the optical-mechanical module 20 is arranged on an emergent light path of the light source module 10 and is used for receiving a first signal and modulating the first signal; the flexible transmission member 30 is connected between the light source module 10 and the optical mechanical module 20, and is configured to transmit the first signal to the optical mechanical module 20, and further transmit the first control signal in the optical mechanical module 20 to the light source module 10, where the transmission directions of the first signal and the first control signal are opposite.

The first signal emitted by the light source module 10 may be an optical signal, and may include an illumination beam (working beam), for example.

The first control signal sent by the optical-mechanical module 20 may include an optical signal, such as a signal control light, which is used to modulate the light source module 10 to control the illumination light beam sent by the light source module 10, and in addition, the first control signal may also include an electrical signal, which is used to control the working current. The transmission direction of the first control signal is opposite to that of the first signal, that is, the first signal is transmitted from the light source module 10 to the optical module 20, and the first control signal is transmitted from the optical module 20 to the light source module 10.

One end of the flexible transmission member 30 is connected to the light source module 10, and the other end is connected to the optical-mechanical module 20, and is configured to transmit the first signal sent by the light source module 10 to the optical-mechanical module 20, and transmit the first control signal sent by the optical-mechanical module 20 to the light source module 10. In some embodiments, the flexible transmission member 30 includes at least one optical fiber for transmitting the first signal to the optical-mechanical module 20 and transmitting the first control signal to the light source module 10 in a first mode, wherein the first mode is at least one of: spatial mode, wavelength division multiplexing mode, time division multiplexing mode, or polarization multiplexing mode.

In the spatial mode, different optical fibers may be used to transmit different signals, for example, one optical fiber transmits a first signal in a forward direction (a transmission direction from the light source module to the optical module), that is, transmits a working light beam (a lighting light beam), and the other optical fiber or cable transmits a first control signal in a reverse direction (a transmission direction from the optical module to the light source module).

In the wavelength division multiplexing mode, for example, only the same optical fiber may be used to transmit different signals, wherein a forward direction may transmit a first signal (which may be optical energy, such as RGB plus infrared), and a reverse direction may transmit a first control signal, such as infrared light with a wavelength different from that of the first signal, such as 1550nm, and when used, the spectral splitting sheets may be added on both sides of the optical fiber.

In the polarization division multiplexing mode, polarization-maintaining optical fibers can be used for transmitting different signals, wherein forward direction transmittable light energy is in one polarization state, and backward direction transmittable light is in the other polarization state.

In the time division multiplexing mode, for example, when the optical-mechanical module is to control to turn off the laser, the light is blocked at the optical fiber, the light source module turns off the laser after finding that the reflected light becomes strong, and at the moment, the optical-mechanical module transmits data by using the channel, and after the control signal for turning on the laser is transmitted again, the light source module turns on the laser.

In order to further explain the technical scheme of the application, the application will explain the main technical features of the application in detail through the following embodiments.

Example 1

Referring to fig. 2, fig. 2 is a schematic structural diagram of a separated projector 1 provided in embodiment 1 of the present application. The separated projector 1 includes a light source module 10, a light source interface module 40, a flexible transmission member 30, an optical-mechanical interface module 50, and an optical-mechanical module 20.

The light source module 10 provides a first signal, which may be a working light beam of any color, such as any one of red, blue and green in three primary colors, or various colors of light generated by mixing the three primary colors in any proportion. The way of generating the first signal by the light source module 10 is not limited, for example, the light source module can directly provide three primary color laser beams, and can generate various color lights by spatially combining light or exciting fluorescent powder by the laser beams.

The embodiment 1 of the present application will be described by taking a spatial light combination as an example. The light source module 10 may include a light source assembly 11, a light combining assembly 12, a light splitting assembly 13, a first coupling-in assembly 14, and a light source control module 15. Wherein, the light source assembly 11 is used for emitting a first signal; the light combining component 12 is configured to perform light combining processing on the first signal; the light source light splitting component 13 is configured to separate the first signal and the first control signal, so that the first signal is transmitted to the optical mechanical module 20 and the first control signal is transmitted to the light source control module 15; the first incoupling component 14 is used for coupling a first signal into the flexible transmission member 30 and for coupling a first control signal out of the optical transmitter module 20; the light source control module 15 is used for controlling the on/off of the light source assembly 11.

The light source assembly 11 may include a single laser, multiple sets of lasers or a laser array, which may be selected as needed and is not limited in this application. The light source assembly 11 comprises at least one working laser for emitting an illumination beam (a laser beam of one of the three primary colors), for example red, blue or green light. In some embodiments, the at least one working laser includes a first working laser 110a, a second working laser 110b, and a third working laser 110c. The laser beams emitted by the first working laser 110a, the second working laser 110b and the third working laser 110c are all different in color, for example, the first working laser 110a is used for emitting a red laser beam, the second working laser 110b is used for emitting a green laser beam and the third working laser 110c is used for emitting a blue laser beam. The number and arrangement of the first working laser 110a, the second working laser 110b, and the third working laser 110c are not limited, and may be selected as needed. In one embodiment, the number of the first working laser 110a, the second working laser 110b and the third working laser 110c is one, and they are horizontally spaced, as shown in fig. 2.

The light combining unit 12 is used for combining the laser beams emitted from the light source unit 11, for example, combining a red laser beam, a green laser beam, and a blue laser beam into a white laser beam. The form of the light combining component 12 is not limited, and is related to the arrangement of the lasers, and can be designed as required, in some embodiments of the present application, the light combining component 12 includes multiple light combining elements, for example, a first light combining element 120a, a second light combining element 120b, and a third light combining element 120c, respectively, and the first light combining element 120a, the second light combining element 120b, and the third light combining element 120c are any optical element of a dichroic mirror, a light combining sheet, or a band pass filter. The first light combining part 120a is disposed on a light path of the first working laser 110a emitting the first laser beam, and emits the first laser beam onto the second light combining part 120 b; the second light combining element 120b is disposed at the intersection of the light path of the second laser beam emitted by the second working laser 110b and the light path of the first laser beam emitted by the first light combining element 120a, and emits the first laser beam and the second laser beam received from the first light combining element 120a to the third light combining element 120c; the third light combining part 120c is disposed at the intersection of the light path of the third laser beam emitted by the third working laser 110c and the light path of the first laser beam and the second laser beam emitted by the second light combining part 120 b. In an embodiment, the first light combining element 120a may be provided with a reflective layer or a red-reflecting green-transmitting blue-transmitting film for reflecting the red laser beam emitted by the first working laser 110a to the second light combining element 120b, the second light combining element 120b may be provided with a green-reflecting red-transmitting film for combining the red laser beam emitted by the first light combining element 120a and the green laser beam emitted by the second working laser 110b, and the third light combining element 120c may be provided with a blue-reflecting yellow-transmitting film for combining the combined light beam emitted by the second light combining element 120b and the blue laser beam and emitting white laser, i.e., the first signal. In some embodiments, the three primary color lasers may be combined in other manners, which is not limited to this. It will be appreciated that the light source splitting assembly 13 may not include the light combining assembly 12 under certain requirements, such as when only a single color projection is to be provided.

The light source splitting component 13 is disposed on an exit light path of the light combining component 12, and is configured to separate a light combining light beam (a first signal) from a first control signal. For example, in some embodiments, the light source splitting assembly 13 may be provided with a dichroic film, and the light source splitting assembly 13 may transmit the combined light beam and reflect the first control signal, which may be designed according to the type of the combined light beam and the first control signal. For example, in some embodiments, the light combining beam is visible light, and the wavelength of the first control signal is 1550nm, which is a wavelength commonly used in optical fiber communication, so that the light source splitting component 13 can be designed to transmit visible light and reflect infrared light, although the wavelengths of the light combining beam and the first control signal are not limited thereto.

The first coupling-in component 14 is disposed on a side of the light source splitting component 13 away from the light combining component 12, and is disposed on a light path of the combined light beam emitted by the light source splitting component 13, that is, disposed at an input end of the flexible transmission member 30, and is configured to couple the combined light beam into the flexible transmission member 30 and couple a first control signal into the light source splitting component 13. In this embodiment, the combined light beam emitted from the light source splitting component 13 is the first signal. In some embodiments, the first coupling-in component 14 includes a coupling-in part for coupling the combined light beam emitted from the light source splitting component 13 into the flexible transmission part 30; the coupling-in component is used for coupling the first control signal generated by the optical mechanical module 20 into the light source light splitting component 13, and the light source light splitting component 13 transmits the first signal and reflects the first control signal, so that the first control signal can be reflected to the light source control module 15.

The light source control module 15 is electrically connected to the light source module 11, and is configured to ensure normal operation of the light source module 10, such as heat dissipation control, on the one hand, and receive a first control signal transmitted from the optical mechanical module 20 to the light source module 10 by the flexible transmission member 30, so as to control a switch of the light source module 11 and control a current value of the light source module 11 on the other hand. Specifically, the first control signal may be converted into an electrical signal through a photoelectric conversion module, and the light source control module 15 receives the electrical signal to control the on/off of the first working laser 110a, the second working laser 110b, and/or the third working laser 110c and the current value of the light source assembly 11.

The flexible transmission member 30 is connected to the light source module 10 through the light source interface module 40 and connected to the opto-mechanical module 20 through the opto-mechanical interface module 50. On one hand, the flexible transmission member 30 is used for transmitting the first signal output by the light source module 10 to the optical mechanical module 20, and on the other hand, the flexible transmission member 30 is used for transmitting the first control signal generated by the optical mechanical module 20 to the light source module 10. In this embodiment, the first signal output by the light source module 10 is a combined light beam. The flexible transmission member 30 may include at least one optical fiber, and in some embodiments, the flexible transmission member 30 includes an optical fiber.

The optical module 20 includes a first coupling-out component 21, an optical splitter component 22, a spatial light modulator 23, a signal control module 24, and a lens 25. The first coupling-out component 21 is configured to couple out the first signal to the optical mechanical module 20, and couple out the first control signal to the flexible transmission member 30; the optical-mechanical light splitting component 22 is arranged at the intersection of the light path of the first signal emitted by the first coupling-out component 21 and the emergent light path of the first control signal, and is used for separating the first signal from the first control signal; the spatial light modulator 23 is configured to modulate the received first signal to generate modulated light; the signal control module 24 is electrically connected to the spatial light modulator 23, and is configured to generate a first control signal after performing photoelectric conversion according to a modulation state of the spatial light modulator 23; the lens 25 is used for converting the modulated light into an imaging light beam and emitting the imaging light beam.

The first outcoupling assembly 21 is arranged at the output end of the flexible transmission member 30. In particular, the first out-coupling member 21 may include an out-coupling member, which may be a coupling lens. The coupling lens is used for receiving the first signal transmitted by the flexible transmission member 30 and coupling the first signal out to the optical module 20.

The optical mechanical light splitting assembly 22 has a structure similar to that of the light source light splitting assembly 13. Specifically, in some embodiments, the optical mechanical dispersion assembly 22 may be provided with a dichroic film, and the optical mechanical dispersion assembly 22 may transmit the first signal and reflect the first control signal, which may be specifically designed according to the type of the first signal and the first control signal, for example, in some embodiments, the first signal is visible light, i.e., an illumination light beam, and the wavelength of the first control signal is a common wavelength for optical fiber communication at 1550nm, and then the optical mechanical dispersion assembly 22 may be designed to transmit visible light and reflect infrared light, although the wavelength of the first control signal is not limited thereto. Since the optical mechanical dispersion element 22 transmits the first signal and reflects the first control signal, the first control signal can be reflected to the first coupling-out element 21 and the first signal can be emitted to the spatial light modulator 23.

The spatial light modulator 23 is electrically connected to the signal control module 24, and is configured to modulate according to a first signal emitted by the optical mechanical splitting assembly 22 of the signal control module 24 to generate modulated light. The type and form of the spatial light modulator 23 are not limited, and can be selected according to the requirement, for example, the spatial light modulator 23 may be a Liquid Crystal Display ("LCD"), a Digital micro-mirror Device ("DMD"), a Liquid Crystal on Silicon ("LCoS"), or the like, and the spatial light modulator 23 may be in a single chip type, a double chip type, or a triple chip type.

The signal control module 24 may be configured to generate a first light source control signal, where the first light source control signal is converted by the electro-optical conversion module to generate a first control signal, and the first control signal is emitted to the optical mechanical light splitting assembly 22. The signal control module 24 is further configured to generate a modulation signal of the spatial light modulator 23 according to the display content to control the spatial light modulator 23 to modulate the received first signal.

The lens 25 receives the modulated light emitted from the spatial light modulator 23 and converts the modulated light into an image beam for projection, and the lens 25 may project a display image onto a projection screen, which may be a curved surface or a flat surface, such as a roof, a side window, a rear window, a headlight of an automobile, a display screen, a desktop or a wall surface, and so on.

It can be understood that the separation type optical machine provided in the present application may not include all the structures described above, and specifically, the structure may be designed according to actual situations, for example, in the separation type optical machine provided with only one laser, the light combining component in the foregoing may not be included, and the light combining component does not need to combine the first signal emitted by the light source component, in which case, the light source light splitting component is disposed on the light emitting path of the light source component; for the case of generating the illumination light beam by using the fluorescence method, the light source module may include a light source assembly and a color wheel, wherein the color wheel is used for exciting the light beam emitted from the light source assembly to generate fluorescence.

In the embodiment of the present application, the light source module 10 and the optical mechanical module 20 are independently disposed, and the optical mechanical module 20 and the light source module 10 are connected by the flexible transmission member 30, so that the light source module 10 and the optical mechanical module 20 can be respectively disposed in different places or different positions of the same place, for example, in different positions in a vehicle, and the installation flexibility and the brightness index of the optical mechanical module 20 can be greatly improved; the flexible transmission member 30 can transmit the first signal generated by the light source module 10 to the optical mechanical module 20, and can also transmit the first control signal generated by the optical mechanical module 20 to the light source module 10, i.e. bidirectional transmission is performed, so that the apparatus is simplified, and the projection system is convenient to install and use; light source module 10 and ray apparatus module 20 are connected through flexible transmission piece 30, therefore light source module 10 and ray apparatus module 20 all can design according to high-grade waterproof dustproof, have improved stability and the life of equipment performance.

Example 2

Referring to fig. 3, fig. 3 is a schematic structural diagram of a separated projector 1A provided in embodiment 2 of the present application. The separated projector 1A includes a light source module 10A, a light source interface module 40A, a flexible transmission member 30A, an optical-mechanical interface module 50A, and an optical-mechanical module 20A.

The light source module 10A may include a light source module 11, at least one second incoupling component 14A, a light source fiber component 16 and a light source control module 15. Wherein, the light source assembly 11 is used for emitting a first signal; at least one second coupling-in component 14A for coupling a first signal into the flexible transmission member 30A and for coupling a first control signal out; the light source control module 15 is used to control the switching and current values of the light source assembly 11.

The light source assembly 11 may include a single laser, multiple sets of lasers, or an array of lasers, and in some embodiments, the light source assembly 11 includes multiple sets of lasers, e.g., 2, 3, 4, 5, 6, 7, 8, 9, 10, etc., that emit the same or different primary color laser beams. In some embodiments of the present application, the plurality of sets of lasers includes a first working laser 110a, a second working laser 110b, and a third working laser 110c. The structure of the light source module 11 provided in example 2 is the same as that of the light source module 11 provided in example 1, and is not specifically described here.

The at least one second coupling-in component 14A is disposed at one side of the light source component 11, the at least one second coupling-in component 14A may include a plurality of sets of coupling-in members, the plurality of sets of coupling-in members are disposed in one-to-one correspondence with the plurality of sets of lasers, and one coupling-in member is disposed on an optical path of a laser beam emitted by a corresponding working laser and is configured to couple the laser beam emitted by the corresponding working laser. In some embodiments of the present application, the coupling-in member is a coupling lens. In an application scenario, the at least one second coupling-in component 14A includes a first coupling-in member 141, a second coupling-in member 142 and a third coupling-in member 143. The first coupling-in part 141 is disposed on the optical path of the first laser beam emitted by the first working laser 110A, and is used for coupling the first laser beam emitted by the first working laser 110A into the flexible transmission part 30A; the second coupling-in part 142 is disposed on the optical path of the second laser beam emitted by the second working laser 110b, and is used for coupling the second laser beam emitted by the second working laser 110b into the flexible transmission part 30A; the third coupling-in part 143 is disposed on the optical path of the third laser beam emitted by the third working laser 110c, and is used for coupling the third laser beam emitted by the third working laser 110c into the flexible transmission part 30A.

In some embodiments, light source fiber assembly 16 includes multiple sets of light source fibers, with the laser beam emitted by each working laser coupled into a respective light source fiber through a respective coupler. In some embodiments, the plurality of sets of light source fibers includes a plurality of sets of first light source fibers 161 and a second light source fiber 162, wherein the plurality of sets of first light source fibers 161 correspond to the plurality of sets of lasers one by one, and one first light source fiber 161 is configured to receive a laser beam emitted by one working laser. In some embodiments, the plurality of sets of first light source fibers 161 include a first light source fiber 161a, a first light source fiber 161b, a first light source fiber 161c and a second light source fiber 162, the first light source fiber 161a is configured to receive the first laser beam coupled by the first coupler 141 and transmit the first laser beam; the first light source fiber 161b is used for receiving the second laser beam coupled by the second coupler 142 and transmitting the second laser beam; the first light source fiber 161c is used for receiving the third laser beam coupled by the third coupler 143 and transmitting the third laser beam; the second light source fiber 162 is connected to the light source control module 15, and can receive the first control signal generated by the optical mechanical module 20A transmitted by the flexible transmission member 30A, and transmit the first control signal to the light source control module 15.

The light source control module 15 is electrically connected to the light source assembly 11, and is configured to ensure normal operation of the light source module 10A, such as heat dissipation control, on the one hand, and receive a first control signal transmitted from the flexible transmission member 30A to the light source module 10A, so as to control on/off of the light source assembly 11 and control current on the other hand. Specifically, the first control signal may be converted into an electrical signal through a photoelectric conversion module, and the light source control module 15 receives the electrical signal to control the on/off of the first working laser 110a, the second working laser 110b, and/or the third working laser 110c and the current value of the light source assembly 11.

The light source interface module 40A is disposed on the light source module 10A, and can be used as an interface for the flexible transmission member 30A to access the light source module 10A. The light source interface module 40A may include a plurality of sets of light source connectors, which are disposed in one-to-one correspondence with the plurality of sets of light source fibers. In some embodiments, the plurality of sets of light source connectors include a plurality of sets of first light source connectors 41 and a second light source connector 42, wherein the plurality of sets of first light source connectors 41 include a first light source connector 41a, a first light source connector 41b, and a first light source connector 41c. The first light source connector 41a is for connecting the first light source fiber 161a and the flexible transmission member 30A; the first light source connector 41b is for connecting the first light source fiber 161b and the flexible transmission member 30A; the first light source connector 41c is used for connecting the first light source fiber 161c and the flexible transmission member 30A; the second light source connector 42 is used to connect the second light source fiber 162 and the flexible transmission member 30A.

The flexible transmission member 30A is connected to the light source module 10A through the light source interface module 40A and connected to the optical mechanical module 20A through the optical mechanical interface module 50A, on one hand, is configured to transmit a first signal generated by the light source module 10A to the optical mechanical module 20A, and on the other hand, is configured to transmit a first control signal output by the optical mechanical module 20A to the light source module 10A. In some embodiments, the flexible transmission member 30A may be a fiber bundle, the fiber bundle may include a plurality of optical fibers, and one working laser is connected to the optical-mechanical module 20A through one optical fiber. The plurality of optical fibers may include a plurality of first optical fibers 31 and a second optical fiber 32. In some embodiments, the plurality of sets of first optical fibers 31 may include first optical fibers 31a, first optical fibers 31b, and first optical fibers 31c. The first optical fiber 31a is used for being connected with the first light source optical fiber 161a through the first light source connector 41a to receive the first laser beam transmitted by the first light source optical fiber 161a and transmit the first laser beam to the optical engine module 20A; the first optical fiber 31b is used for being connected with the corresponding first light source optical fiber 161b through the first light source connector 41b to receive the second laser beam transmitted by the first light source optical fiber 161b and transmit the second laser beam to the optical-mechanical module 20A; the first optical fiber 31c is used for being connected with the first light source optical fiber 161c through the first light source connector 41c to receive the third laser beam transmitted by the first light source optical fiber 161c and transmit the third laser beam to the optical module 20A; the second optical fiber 32 is connected to the second light source connector 42, and is configured to transmit signals, including a switch control signal of the light source assembly 11 and a communication signal between the light source module 10A and the optical mechanical module 20A, specifically, the second optical fiber 32 may receive a first control signal sent by the optical mechanical module 20A, and transmit the first control signal to the light source control module 15 through the second light source optical fiber 162.

The optical-mechanical interface module 50A is disposed on the optical-mechanical module 20A, and can be used as an interface for the flexible transmission member 30A to access the optical-mechanical module 20A. The optical-mechanical interface module 50A may include multiple sets of optical-mechanical connectors, which are arranged in one-to-one correspondence with the multiple sets of optical fibers. In some embodiments, the plurality of sets of optical-mechanical connectors include a plurality of sets of first optical-mechanical connectors 51 and second optical-mechanical connectors 52, wherein the plurality of sets of first optical-mechanical connectors 51 include a first optical-mechanical connector 51a, a first optical-mechanical connector 51b, and a first optical-mechanical connector 51c. The first opto-mechanical connector 51a is disposed on the opto-mechanical module 20A and connected to the first optical fiber 31a; the first opto-mechanical connector 51b is disposed on the opto-mechanical module 20A and connected to the first optical fiber 31b; the first opto-mechanical connector 51c is disposed on the opto-mechanical module 20A and connected to the first optical fiber 31c; the second opto-mechanical connector 52 is disposed on the opto-mechanical module 20A and connected to the second optical fiber 32.

The optical-mechanical module 20A includes at least one second coupling-out element (not shown), an optical-mechanical fiber element 26, a light homogenizing and shaping element 27, a spatial light modulator 23, a signal control module 24, and a lens 25. The at least one second coupling-out component is arranged at the output end of the optical fiber bundle and is used for coupling the first signal out of the optical fiber bundle and coupling the first control signal out of the optical machine module 20A; the optical-mechanical optical fiber assembly 26 can be used for receiving the first signal transmitted by the flexible transmission member 30A and transmitting the first signal to the dodging shaping assembly 27; the dodging and shaping component 27 is connected with the optical mechanical fiber component 26 and is used for dodging the first signal transmitted by the optical mechanical fiber component 26 and guiding the first signal to be emitted to the spatial light modulator 23 so as to provide a uniform illumination beam field for the spatial light modulator 23; the spatial light modulator 23 is used for modulating the laser beam emitted by the dodging shaping component 27 according to the control of the signal control module 24 to generate modulated light; the lens 25 is used for converting the modulated light into an imaging light beam and emitting the imaging light beam.

The at least one second coupling-out element may comprise a plurality of sets of coupling-out members. In some embodiments of the present application, the coupling-out member is a coupling-in member. In an application scenario, a plurality of groups of coupling-out pieces correspond to a plurality of groups of coupling-in pieces one to one.

The opto-mechanical fiber assembly 26 includes a plurality of sets of opto-mechanical fibers, and the laser beam emitted by each laser is coupled into a corresponding source fiber through a corresponding coupler, transmitted to the fiber through a corresponding source fiber, and transmitted to a corresponding opto-mechanical fiber through the fiber. In some embodiments, the plurality of sets of optical-mechanical fibers includes a plurality of sets of first optical-mechanical fibers 261 and a second optical-mechanical fiber 262, wherein the plurality of sets of first optical-mechanical fibers 261 correspond to the plurality of sets of first optical fibers 31 one by one, and one first light source fiber 161 is configured to receive a laser beam transmitted by one first optical fiber 31. In some embodiments, the plurality of sets of first optical-machine fibers 261 includes a first optical-machine fiber 261a, a first optical-machine fiber 261b, and a first optical-machine fiber 261c; the first optical fiber 261a is used for receiving the first laser beam transmitted by the first optical fiber 31a and transmitting the first laser beam to the dodging shaping component 27; the first optical machine fiber 261b is used for receiving the second laser beam transmitted by the corresponding first optical fiber 31b and transmitting the second laser beam to the dodging and shaping assembly 27; the first optical fiber 261c is used for receiving the third laser beam transmitted by the first optical fiber 31c and transmitting the third laser beam to the dodging shaping component 27; the second optical-mechanical fiber 262 is connected to the signal control module 24 and the second optical-mechanical connector 52, and can receive the first control signal generated by the signal control module 24, and transmit the first control signal to the second light source fiber 162 through the second optical fiber 32, and further transmit the first control signal to the light source control module 15.

The dodging shaping component 27 can be a dodging shaping element such as a compound eye or a light rod. In one embodiment, a diffuser film is disposed in the dodging profile 27 for decoherently modulating the laser beam transmitted by the optical fiber assembly 26.

The spatial light modulator 23 is electrically connected to the signal control module 24, and is configured to modulate the laser beam emitted from the dodging shaping component 27 according to the control of the signal control module 24 to generate modulated light. The type and form of the spatial light modulator 23 are not limited, and can be selected according to the requirement, for example, the spatial light modulator 23 can be LCD, DMD or LCoS, etc., and the form of the spatial light modulator 23 can be monolithic, or two-piece, or three-piece.

It is understood that the opto-mechanical light splitting assembly 22A may also include other guiding devices known in the art, such as relay lenses and mirrors, which may be designed as desired.

The signal control module 24 may be configured to generate a first light source control signal, where the first light source control signal is converted by the electro-optical conversion module to generate a first control signal, and the first control signal is emitted to the second optical-mechanical fiber 262. The signal control module 24 may also be configured to control the spatial light modulation device 23 to modulate the first signal.

The lens 25 receives the modulated light emitted from the spatial light modulator 23 and converts the modulated light into an image beam for projection, and the lens 25 can project a display image onto a projection screen, where the head may be a curved surface or a flat surface, such as a roof, a side window, a rear window, a headlight of an automobile, a display screen, a desktop, or a wall surface.

The separate system 1A provided in embodiment 2 of the present application is substantially the same as the separate system 1 provided in embodiment 1, and the difference is that, in embodiment 1, different laser beams emitted by the light source module 11 are combined and then transmitted to the optical module 20 through the same optical fiber of the flexible transmission member 30 to be modulated, so as to generate an imaging light beam, in embodiment 2, different laser beams emitted by the light source module 11 are transmitted to the optical module 20A through different optical fibers of the flexible transmission member 30A, respectively, so as to be modulated, so as to generate an imaging light beam, in embodiment 1, the same optical fiber is used to transmit a first signal, the communication between the light source module 10A and the optical module 20, and the first control signal for controlling the light source module 11, and in embodiment 2, the communication between the light source module 10A and the optical module 20A, and the first control signal for controlling the light source module 11 are returned through an independent optical fiber, and the independent optical fiber for transmitting the first signal is made into an optical fiber bundle together.

In the above-mentioned embodiment of this application, set up light source module and ray apparatus module separation, the light-emitting of every light source subassembly is with a corresponding fiber coupling and transmission, can increase the quantity of light source subassembly in a flexible way and increase projection system's luminance.

Example 3

Referring to fig. 4, fig. 4 is a schematic structural diagram of a separated projector 1B provided in embodiment 3 of the present application. The separated projector 1B includes a light source module 10A, a flexible transmission member 30A, an optical-mechanical interface module 50A, an optical-mechanical module 20A, and a circuit module 60.

The structure of the separated projector 1B provided in embodiment 3 of the present application is basically the same as that of the separated projector 1A provided in embodiment 2, and the difference is that the separated projector 1B provided in embodiment 3 of the present application further includes a circuit module 60 for supplying power from the light source module 10A to the optical module 20A and communicating the light source module 10A with the optical module 20A. Specifically, the circuit module 60 includes a first cable 61, a light source connector 62, a second cable 63, an optical machine connector 64, and a third cable 65, which are connected in sequence. In some embodiments, the first, second, and third cables 61, 63, 65 are electrical wires. In other embodiments, the first, second and third cables 61, 63, 65 are twisted pairs of wires and communication lines; one end of the first cable 61 is electrically connected with the light source control module 15, and the other end of the first cable 61 is connected with the light source connector 62; the light source connector 62 is disposed on the light source module 10; one end of the third cable 65 is electrically connected with the signal control module 24, and the other end of the third cable 65 is connected with the optical machine connector 64; the optical-mechanical connector 64 is arranged on the optical-mechanical module 20; one end of the second cable 63 is connected with the light source connector 62, the other end of the second cable 63 is connected with the optical machine connector 64, the second cable 63 and the optical fiber bundle in the flexible transmission member 30A are routed in the same position, wherein the optical fiber bundle is used for transmitting the first signal to the optical machine module 20A, and the electric wire is used for transmitting the first control signal to the light source module 10A and is also used for transmitting a communication protocol. The communication protocol can be used for controlling the on-off of the laser spoke, and can also be used for transmitting current setting and acquiring the state of the light source, such as current, temperature, whether the light source is in fault and the like. In this embodiment, since the light source module 10A and the optical mechanical module 20A can transmit current and communication through a cable, the second optical mechanical fiber 262 and the second light source fiber 162 only need to transmit the on-off signal of the laser, and do not need to transmit a protocol signal with a large data volume, so that the real-time performance is high. It is understood that the circuit module 60 in embodiment 3 of the present application can also be applied to embodiment 1, that is, the separated projector 1 provided in embodiment 1 can include a circuit module, so that the light source module 10 and the optical mechanical module 20 can transmit current and communicate through a cable.

In some embodiments, the separate light engine further comprises a power supply assembly for supplying power to the light source assembly and for supplying power to the light engine module through the wire, and particularly, the power supply assembly may comprise a circuit board. In some embodiments, the light source module further includes a second coupling-in component, and the optical transceiver module further includes a second coupling-out component, wherein the light source module is disposed at an input end of the second cable and is configured to couple the first control signal out of the second cable; the second coupling-out component is arranged at the output end of the second cable and used for coupling the first control signal into the second cable, the second coupling-in component is arranged adjacent to the first coupling-in component, and the second coupling-out component is arranged adjacent to the first coupling-out component, so that the optical fiber bundles and the second cable are routed in the same position.

Example 4

The application researcher finds that the optical fiber is easy to leak light in the using process due to the damage of the protective layer, the breakage of the optical fiber and the like in the research process, and the optical fiber leaks light to cause abnormal projection or influence the projection effect as a transmission medium of the illumination light beam. In addition, when the laser power is high and the leakage amount is too large, the device is likely to be ignited, and the normal operation of the automobile is affected. And because the optical fiber is usually hidden in the automobile and is not easy to detect at ordinary times, the optical fiber is a great safety hazard, and a larger traffic accident can be caused if the automobile is running. Therefore, in practical use, it is necessary to support an optical fiber projection system that automatically detects the light leakage of the optical fiber and can turn off the light source in time.

In order to solve the technical problem, infrared light is introduced and coated at the tail end of the optical fiber, whether the optical fiber leaks light or not is detected through loss of the infrared light different from a working laser beam in the optical fiber, and the function of automatically closing a laser light source is further realized. Specifically as follows.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a separated projector 1C according to an embodiment of the present application. The separated projector 1C includes a light source module 10C, a flexible transmission member 30, an optical-mechanical interface module 50, and an optical-mechanical module 20.

The light source module 10C is used for providing and controlling the first signal and the detection light source. The light source module 10C may include a light source assembly 11C, a light combining assembly 12C, a light splitting assembly 13C, a light detecting module 17, a first coupling-in assembly 14, and a light source control module 15C. Wherein the light source assembly 11C is for providing a first signal and a second signal; the light combining component 12C is configured to combine the first signal and the second signal to generate a combined light beam; the light source light splitting component 13C is used for splitting the combined light beam and the reflected second signal; the optical detection module 17 is used for measuring the reflected light intensity of the second signal and converting the optical signal into an electrical signal such as current, voltage, power and the like; the first coupling-in assembly 14 is used for coupling the combined light beam into the flexible transmission member 30; the light source control module 15C is used for controlling the on/off and the current value of the light source assembly 11C and for determining whether the flexible transmission member 30 leaks light according to the light signal generated by the light detection module 17.

The light source module 11C includes a working laser 110 and a detection laser 111. Wherein the working laser 110 is the same as the working laser 110 in embodiment 1, and is used for providing the first signal, which in the embodiment of the present application is the illumination beam (working beam). The detection laser is used for emitting a second signal, in the embodiment of the application, the second signal is detection laser, the wavelength of the second signal is different from that of the first signal, the first signal is visible light, the wavelength of the detection laser is infrared light, and the first signal and the second signal with proper wavelengths can be selected according to different application scenes. The light source control module 15 is used to control the switching of the working laser 110 and the detection laser 111. When the split carriage is in operation, the active laser 110 and the detection laser 111 are simultaneously turned on.

The light combining component 12C is configured to spatially combine the first signal and the second signal to generate a combined light beam, and the combined light beam passes through the light source splitting component 13C and is coupled into the flexible transmission member 30 through the first coupling-in component 14, and then is transmitted in the flexible transmission member 30 in a direction away from the light source module 10C. The structure of the light combining assembly 12C in this embodiment is similar to the structure of the light combining assembly 12 in embodiment 1, and the light combining assembly 12C includes a fourth light combining element 120d and a fifth light combining element 120e, and the fourth light combining element 120d and the fifth light combining element 120e are any optical element of a dichroic mirror, a light combining sheet, or a band pass filter. The fourth light combining part 120d is disposed on a light path of the working laser 110 emitting the working laser beam, and emits the working laser beam to the fifth light combining part 120 e; the fifth light combining element 120e is disposed at the intersection of the light path of the detection laser 111 emitting the detection beam and the light path of the fourth light combining element 120d emitting the working laser beam, and emits the working laser beam and the detection laser beam received from the fourth light combining element 120d to the light source splitting assembly 13C. In an embodiment, the working beam is a visible beam, the detection beam is an infrared beam, the fourth light combining member 120d may be provided with a reflective layer for reflecting the laser beam emitted by the working laser 110 to the fifth light combining member 120e, and the fifth light combining member 120e may be provided with an anti-infrared visible light-transmitting film for combining the laser beam emitted by the fourth light combining member 120d and the second signal emitted by the detection laser 111.

The light source splitting component 13C is disposed on the exit light path of the light combining component 12, and is configured to separate the light combining beam and the reflected second signal. For example, in some embodiments, the optical light source splitting component 13C is used to output the combined light beam to the flexible transmission member 30 and output the reflected second signal to the optical detection module 17 (the output combined light beam and the reflected second signal have different output ports or angles), and the optical light source splitting component 13C may be a beam splitter or an optical circulator, etc.

The optical detection module 17 is configured to measure the reflected light intensity of the second signal, convert the optical signal into electrical signals such as current, voltage, power, and the like, and transmit the electrical signals to the light source control module 15C, and one end of the optical detection module 17 may include an optical filter configured to filter light outside the second signal band. The reflected light intensity of the second signal is closely related to the determination of the light leakage.

The light source control module 15C is electrically connected to the light source assembly 11C and the light detection module 17, and is configured to determine whether the flexible transmission member 30 leaks light according to the electrical signal transmitted by the light detection module 17, and when the electrical signal is abnormal, determine that the flexible transmission member 30 leaks light, control to turn off the working laser 110 and the detection laser 111.

In one application scenario, as shown in FIG. 6, the detection process may be performed by a coating, for example, in some embodiments, the coating 18 may be a dichroic beam splitting film that reflects infrared light with longer wavelengths and transmits visible light with shorter wavelengths. Referring to fig. 7, the positions of the coating can be three: 1) The flexible transmission member 30 is far away from the port a of the light source module 10C; 2) The optical-mechanical interface module 50 is close to the port b of the light source module 10C; 3) The opto-mechanical interface module 50 is located away from the port c of the flexible transmission 30. Most of the reflected second signal and a small portion of the first signal (back-scattered) are transmitted back from the end or splice of the optical fiber in the flexible transmission member 30 to the fiber port and then back to the optical source splitting assembly 13.

Due to the coating 18, the second signal is transmitted in the optical fiber, most of the light is reflected back to the entrance of the optical fiber, and if there is no light leakage in the optical fiber, the intensity of the reflected light should be kept at a stable high level for the second signal with a certain input power. If the optical fiber is broken or leaks light, a considerable portion of the detection light will be refracted out from the broken or leaked optical fiber, and the intensity of the corresponding reflected light will be reduced, so that the electrical signal output by the optical detection module 17 will be obviously reduced. Therefore, whether the optical fiber leaks light can be judged by, but not limited to, the following two ways: 1) Specifically, in some embodiments, the first threshold may be a preset fixed value, and if the light source control module 15C detects that the electrical signal output by the light detection module 17 drops and is smaller than the first threshold, it may be determined that light leakage occurs in the optical fiber. In other embodiments, the first threshold may be a preset fixed percentage, and if the light source control module 15C detects that the electrical signal output by the light detection module 17 is less than 70% of the intensity of the electrical signal when no light leakage occurs, it is determined that the optical fiber leaks light. 2) In some embodiments, if the light source control module 15C recognizes that the electrical signal output by the light detection module 17 fluctuates sharply, for example, if the electrical signal drops greatly in a short time, it is determined that the optical fiber leaks light.

In some embodiments, the flexible transmission member 30 may include an optical fiber for transmitting a combined light beam. One end of the optical fiber is connected to the light source module 10C, and the other end of the optical fiber is connected to the optical-mechanical module 20 through the optical-mechanical interface module 50, for emitting the first signal to the optical-mechanical module 20.

In some embodiments, the opto-mechanical module 20 may include a beam expander device, a spatial light modulator 23, a signal control module 24, and a lens 25. The first signal light is projected by the beam expander, the spatial light modulator 23 and the lens 25 to display a projection picture. The second signal in the optical fiber is not emitted through the optical mechanical interface module 50 but reflected back to the optical fiber or reflected in the optical fiber and is transmitted back to the optical fiber entrance port.

The split type projector provided in embodiment 4 of the present application is basically the same as the split type projector provided in embodiment 1 of the present application in structure, and the main difference is that in embodiment 4 of the present application, the light source module 11C includes the detection laser 111, and the light source module 10C further includes the light detection module 17, and whether the light leakage of the optical fiber is determined by combining with the film coating mode.

Example 5

Referring to fig. 8, fig. 8 is a schematic structural diagram of a separated projector 1D provided in embodiment 5 of the present application. The separated projector 1D includes a light source module 10D, a flexible transmission member 30, an optical module interface module 50, and an optical module 20.

The structure of the separated projector 1D provided in embodiment 5 of the present application is substantially the same as that of the separated projector 1C provided in embodiment 4, and the difference is that in the separated projector 1D provided in embodiment 5 of the present application, the light source module 10D does not use the detection laser to emit the second signal to detect whether the flexible transmission member 30 leaks light, but uses the effect of a part of the first signal to replace the second signal to achieve light leakage detection, that is, eliminates the detection light with a wavelength different from that of the illumination light beam, and the coating film 18D is disposed at the port a of the flexible transmission member 30 far from the light source module 10D, or the port b of the optical-mechanical interface module 50 near the light source module 10D, or the port C of the optical-mechanical interface module 50 far from the flexible transmission member 30, and the coating film 18D is used to reflect a part of the first signal, and determines whether the flexible transmission member 30 leaks light by detecting the intensity of the part of the reflected first signal.

The light source module 10D includes a light source assembly 11D, a reflective element 19, a light source splitting assembly 13D, a light detection module 17D, and a light source control module 15D. Light source module 11D includes a working laser 110 for providing a first signal, which in the present embodiment is an illumination beam. The reflecting element 19 is disposed on an emitting light path of the working laser 110, and is configured to reflect the first signal; the light source light splitting component 13D is disposed on an outgoing light path of the reflection element 19, and may be an optical splitter or an optical circulator, and is configured to transmit the first signal and reflect a part of the reflected first signal to the optical detection module 17D; the light detection module 17D is configured to detect the light intensity of the reflected part of the first signal; the flexible transmission member 30 is used for transmitting the first signal to the opto-mechanical interface module 50. Referring to fig. 7, a film is coated on an end a of the flexible transmission member 30 far away from the light source module 10D, an end b of the optical-mechanical interface module 50 near the light source module 10D, or an end c of the optical-mechanical interface module 50 far away from the light source module 10D, so that a part of the first signal is reflected and reversely transmitted back to an end of the flexible transmission member 30 near the light source module 10D along the flexible transmission member 30.

In embodiment 5 of the present application, the plated film 18 is a semi-transparent and semi-reflective film, and partially reflects the first signal and partially transmits the first signal, as shown in fig. 9. The reflection and transmission ratio of the semi-transparent and semi-reflective film can be set according to the thickness of the coating film 18D, and in order to improve the light efficiency, the ratio of the transmitted light can be higher, for example, the ratio of the transmitted light to the reflected light is 8, 2, 8. Therefore, most of the first signals are emitted through the optical-mechanical interface module 50 and realize projection display, and a small part of the light is transmitted reversely along the flexible transmission member 30 and detected by the light detection module 17 through the light source light splitting assembly 13D. The light source splitting assembly 13D in embodiment 5 of the present application may be a beam splitter or an optical circulator, similar to the light source splitting assembly 13C in embodiment 4. The light detection module 17D is also similar to the light detection module 17 in embodiment 4, and the only difference is that the operating wavelength band of the light detection module 17D is the operating light wavelength band or is provided with a filter of the operating light wavelength band. The light source control module 15 is configured to determine light leakage according to the electrical signal output by the light detection module 17D.

Example 6

Referring to fig. 10, fig. 10 is a schematic structural diagram of a separated projector 1E provided in embodiment 6 of the present application. The separated projector 1E includes a light source module 10A, a flexible transmission member 30A, an optical-mechanical interface module 50A, an optical-mechanical module 20E, and a circuit module 60.

The structure of the separated projector 1E provided in embodiment 6 of the present application is substantially the same as that of the separated projector 1B provided in embodiment 3, and the difference is that the optical-mechanical module 20E provided in embodiment 6 of the present application further includes a light leakage detection module 28, which is used for determining whether the flexible transmission member 30A leaks light together with the signal control module 24.

Specifically, in some embodiments, leak light detection module 28 includes a beam splitter 281 and a photodetector 282. The optical splitter 281 is disposed on an exit light path of the flexible transmission member 30A, in some embodiments, on an exit light path of the optical mechanical fiber assembly 26, specifically, on an exit light path of the light homogenizing and shaping assembly 27, and is configured to allow a third part of the first signal transmitted by the flexible transmission member 30A to pass through the optical splitter 281, and reflect a fourth part of the first signal to form a first detection signal, where the first detection signal is an optical signal. In some embodiments, referring to fig. 11, the beam splitter 281 may be a half mirror, wherein the ratio of reflection and transmission may be controlled by the thickness of a coating film 2810 of the half mirror, and in order to ensure the brightness of the projected image, the transmittance of the beam splitter 281 is 99% or more, and thus the fourth portion first signal ratio is 1%. The optical detector 282 is disposed on the emitting light path of the optical splitter 281, and is configured to measure light intensity information of the first detection signal, convert the light intensity information of the first detection signal into a first detection electrical signal such as current, voltage, and power, and the optical detector 282 is electrically connected to the signal control module 24 and configured to transmit the first detection electrical signal to the signal control module 24. In some embodiments of the present application, the light detector 282 may be a light sensor, and specifically, the row selection may be modified as needed, and the present application is not limited specifically. The signal control module 24 is configured to determine whether the flexible transmission member 30A leaks light according to the first detection electrical signal. In order to prevent the influence of noise and the like, a second threshold may be set according to calculation and actual conditions for determining whether light leakage occurs, when the light intensity information of the first detection signal is smaller than the second threshold, the signal control module 24 determines that the flexible transmission member 30A generates light leakage, and then sends a second light source control signal, the second light source control signal is converted by the electro-optical conversion module to generate a second control signal, and the second control signal is transmitted to the light source module 10A through the circuit module 60, so as to control the on/off of the light source assembly 11. In some embodiments, if the signal control module 24 determines that light leakage occurs, the enable signal of the light source assembly 11 is interrupted, and the light source control module 15 fails to receive the enable signal transmitted by the circuit module 60, and then turns off the light source assembly 11.

The split projector 1E provided in embodiment 6 of the present application includes the light leakage detection module 28, and automatically identifies whether light leakage occurs in the optical fiber in the flexible transmission member 30A by detecting intensity information of the partially reflected light of the first signal, and further controls the switch of the light source assembly 11, so that the method is simple and the safety of the split projector is improved.

Example 7

Referring to fig. 12, fig. 12 is a schematic structural view of a separated projector 1F provided in embodiment 7 of the present application. The separated projector 1F includes a light source module 10A, a flexible transmission member 30A, an optical-mechanical interface module 50A, an optical-mechanical module 20F, and a circuit module 60.

A separate projector 1F provided in embodiment 7 of the present application has substantially the same structure as the separate projector 1E provided in embodiment 6, and is different from the separate projector 1E provided in embodiment 6 in that a leak light detection module 28F in the separate projector 1F provided in embodiment 7 of the present application is different from the leak light detection module 28 in the separate projector 1E provided in embodiment 6. Specifically, the leak light detection module 28F includes a light converging mechanism 283 and a photodetector 282. Stray light cannot be avoided in the optical mechanical module 20F, and the intensity of the stray light has a linear relationship with the light intensity of the first signal, so that the light intensity of the first signal emitted by the flexible transmission member 30A can be judged according to the light intensity information of the stray light in the optical mechanical module 20F. The light converging mechanism 283 is used for converging a part of the stray light in the optical module 20F to form a third detection electrical signal, and in some embodiments, the light converging mechanism 283 may be a concave mirror or a lens. The optical detector 282 is disposed at the light converging position of the light converging mechanism 283, and is configured to measure the light intensity information of the third detection signal, convert the light intensity information of the third detection signal into third detection electrical signals such as current, voltage, and power, and the optical detector 282 is electrically connected to the signal control module 24, and is configured to transmit the third detection electrical signals to the signal control module 24. Similarly, a third threshold may be set according to calculation and actual conditions for determining whether light leakage occurs, when the light intensity information of the third detection signal is smaller than the third threshold, the signal control module 24 determines that the flexible transmission member 30A generates light leakage, and then sends a second light source control signal, the second light source control signal is converted by the electro-optical conversion module to generate a second control signal, and the second control signal is transmitted to the light source module 10A through the circuit module 60, so as to control the switching of the light source assembly 11.

Example 8

Referring to fig. 13, fig. 13 is a schematic structural diagram of a separated projector 1G provided in embodiment 8 of the present application. The separated projector 1G includes a light source module 10A, a flexible transmission member 30A, an optical-mechanical interface module 50A, an optical-mechanical module 20G, and a circuit module 60.

A separate projector 1G provided in embodiment 8 of the present application has substantially the same structure as the separate projector 1F provided in embodiment 7, and is different from the separate projector 1F provided in embodiment 7 in that a leak light detection module 28G in the separate projector 1G provided in embodiment 8 of the present application is different from the leak light detection module 28 in the separate projector 1F provided in embodiment 7. Specifically, leak light detection module 28F includes only photodetector 282. The optical detector 282 is disposed at a fixed position where there is much stray light in the optical module 20G, has high sensitivity, and is configured to measure light intensity information of a third detection signal formed by a portion of stray light in the optical module 20G, convert the light intensity information of the third detection signal into a third detection electrical signal such as current, voltage, and power, and the optical detector 282 is electrically connected to the signal control module 24 and configured to transmit the third detection electrical signal to the signal control module 24. Similarly, a fourth threshold may be set according to calculation and actual conditions for determining whether light leakage occurs, when the light intensity information of the third detection signal is smaller than the fourth threshold, the signal control module 24 determines that the flexible transmission member 30A leaks light, and then sends a second light source control signal, the second light source control signal is converted by the electro-optical conversion module to generate a second control signal, and the second control signal is transmitted to the light source module 10A through the circuit module 60 to control the on/off of the light source assembly 11.

The split type projector 1F and the split type projector 1G provided in embodiments 7 and 8 of the present application automatically identify whether the optical fiber in the flexible transmission member 30A leaks light by using the intensity information of the stray light in the optical module 20F and the optical module 20G, and further control the switch of the light source assembly 11, so that the method is simple and the safety of the split type projector is improved.

Example 9

Referring to fig. 14, fig. 14 is a schematic structural diagram of a separated projection system according to an embodiment of the present application, which is a vehicle 100. The vehicle 100 includes a separate projector 1 and a projection screen 2, the projection screen 2 is disposed on an optical path of the image beam emitted from the separate projector 1, and the projection light emitted from the separate projector 1 can be projected to any position of a vehicle body, for example, a roof, a side window, or a rear window, i.e., the roof, the side window, or the rear window corresponds to the projection screen 2.

In the above embodiment, it is not limited that the projection system necessarily includes all the components mentioned in the embodiments, and it is also not limited that all the components must be disposed adjacently or in direct contact, and in practical applications, suitable components may be selected according to requirements such as product structures, or relative position relationships, or other structures may be disposed between adjacent components to make the adjacent components indirectly contact.

The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure or those directly or indirectly applied to other related technical fields are intended to be included in the scope of the present disclosure.

Claims (27)

1. A split light engine, comprising:

the light source module is used for sending a first signal;

the optical-mechanical module is arranged on a transmission path of the light source module and used for receiving the first signal and modulating the first signal;

the flexible transmission piece is connected between the light source module and the optical mechanical module and used for transmitting the first signal to the optical mechanical module, wherein the flexible transmission piece is further used for transmitting a first control signal in the optical mechanical module to the light source module, the first control signal is used for modulating the light source module, and the transmission direction of the first signal is opposite to that of the first control signal.

2. The split light machine of claim 1,

the flexible transmission member at least comprises an optical fiber, the optical fiber is used for transmitting the first signal to the optical-mechanical module and transmitting the first control signal to the light source module by adopting a first mode, and the first mode is at least one of the following modes: wavelength division multiplexing mode, time division multiplexing mode, or polarization multiplexing mode.

3. The carriage of claim 2, wherein the carriage module comprises:

a spatial light modulator for modulating the first signal and generating modulated light;

the signal control module is electrically connected with the spatial light modulator so as to generate the first control signal after electro-optical conversion according to the modulation state of the spatial light modulator; and

and the first light splitting component is arranged on an incident light path of the spatial light modulator and is used for transmitting the first signal and reflecting the first control signal.

4. The split carriage of claim 3, wherein the light source module comprises:

a light source assembly for emitting the first signal;

and the second light splitting component is arranged on an emergent light path of the light source component and used for transmitting the first signal and reflecting the first control signal, and the first control signal is used for controlling the opening and closing of the light source component or the current value of the light source component.

5. The split light engine of claim 2, further comprising:

the first coupling-in component is arranged at the input end of the optical fiber and is used for coupling the first signal into the optical fiber and for coupling the first control signal out; and

the first coupling-out component is arranged at the output end of the optical fiber and is used for coupling the first signal out of the optical fiber and coupling the first control signal out.

6. The split light machine of claim 1,

the flexible transmission piece at least comprises an optical fiber bundle and an electric wire, the optical fiber bundle is used for transmitting the first signal to the optical machine module, the electric wire is used for transmitting the first control signal to the light source module, and the optical fiber bundle and the electric wire are wired in a coordinated mode.

7. The split carriage of claim 6, wherein the light source module comprises:

a light source assembly for emitting the first signal;

and the power supply assembly is used for supplying power to the light source assembly and is also used for supplying power to the optical machine module through the electric wire.

8. The carriage of claim 7, wherein the carriage module comprises:

the light leakage detection module is arranged on an emergent light path of the optical fiber bundle and used for converting part of the first signal into a first detection signal and converting light intensity information of the first detection signal into a first detection light signal; and

and the signal control module is electrically connected with the light leakage detection module and used for judging whether the optical fiber bundle leaks light or not according to the first detection light signal.

9. The split optical-mechanical apparatus of claim 8, wherein the light leakage detection module comprises:

the optical splitter is arranged on an emergent light path of the optical fiber bundle and is used for enabling a third part of the first signals to be transmitted and a fourth part of the first signals to be reflected to form the first detection signals; and

the optical detector is arranged on a light path of the first detection signal emitted by the optical splitter and used for measuring light intensity information of the first detection signal and converting the light intensity information of the first detection signal into the first detection light signal;

the signal control module is electrically connected with the optical detector and used for generating a second control signal after electro-optical conversion according to the first detection optical signal, and the second control signal is used for controlling the switch of the light source component.

10. The carriage of claim 7, wherein the carriage module comprises:

the light leakage detection module is used for measuring light intensity information of a third detection signal formed by part of stray light in the optical-mechanical module and converting the light intensity information of the third detection signal into a third detection light signal; and

and the signal control module is electrically connected with the light leakage detection module and used for judging whether the optical fiber bundle is switched on or off according to the third detection light signal.

11. The split optical-mechanical apparatus of claim 10, wherein the leak light detection module comprises a light detector, and the light detector is configured to measure light intensity information of the third detection signal and convert the light intensity information of the third detection signal into the third detection light signal;

the signal control module is electrically connected with the optical detector and used for generating a second control signal after electro-optical conversion according to the third detection optical signal, and the second control signal is used for controlling the switch of the light source component.

12. The split optical-mechanical system of claim 11, wherein the leak light detection module further comprises a light converging mechanism, and the light converging mechanism is configured to converge the part of the stray light in the optical-mechanical system to form the third detection signal; the light detector is arranged at the light convergence position of the light convergence mechanism.

13. The split light engine of claim 6, wherein the wire is further configured to transmit a communication protocol.

14. The split light engine of claim 6, further comprising:

at least one second coupling-in component arranged at the input end of the optical fiber bundle and used for coupling the first signal into the optical fiber bundle;

at least one second coupling-out component arranged at the output end of the optical fiber bundle and used for coupling the first signal out of the optical fiber bundle;

the third coupling-in component is arranged at the input end of the electric wire and is used for coupling the first control signal out of the electric wire; and

and the third coupling-out component is arranged at the output end of the electric wire and is used for coupling the first control signal into the electric wire, wherein the second coupling-in component and the third coupling-in component are arranged adjacently, and the second coupling-out component and the third coupling-out component are arranged adjacently, so that the optical fiber bundle and the electric wire are routed in the same place.

15. The split carriage of claim 14,

the light source module comprises a plurality of groups of light source components;

the second coupling-in assembly comprises a plurality of groups of coupling-in pieces, and the plurality of groups of light source assemblies correspond to the plurality of groups of coupling-in pieces one to one; and

the second coupling-out assembly comprises a plurality of groups of coupling-out pieces, and the plurality of groups of coupling-out pieces correspond to the plurality of groups of coupling-in pieces one to one.

16. The separating optical-mechanical apparatus of claim 1, wherein the light source module comprises a plurality of light source modules and a light combining module, and the first signal emitted from the light source modules is spatially combined by the light combining module and then transmitted to the optical-mechanical module.

17. The split optical-mechanical system of claim 1, wherein the light source module comprises a light source module and a color wheel, and the color wheel is configured to excite a light beam emitted from the light source module to generate fluorescence.

18. The split carriage of claim 1, wherein the first signal is an illumination beam.

19. The split carriage of claim 1, wherein the first control signal is an optical signal or an electrical signal.

20. The split carriage of claim 2,

the optical fiber is further used for transmitting a second signal to the light source module from one side, away from the optical mechanical module, of the optical fiber, and the second signal is used for detecting whether the optical fiber leaks light or not.

21. The split light engine of claim 20, further comprising:

a coating for reflecting the second signal and refracting at least a portion of the first signal; and

the optical-mechanical interface module is used for connecting the optical fiber to the optical-mechanical module;

the coating is arranged at a port on one side, far away from the light source module, of the optical fiber, and is arranged at a port on one side, near to the optical fiber, of the optical machine interface module or is arranged at a port on one side, far away from the optical fiber, of the optical machine interface module.

22. The split light machine of claim 21,

the coating film is a semi-transparent semi-reflective film and is used for enabling a first part of the first signals to be reflected and a second part of the first signals to be refracted, and the second signals are the reflected first signals.

23. The split carriage of claim 21,

the light source module includes:

a light source assembly for emitting the first signal and the second signal, the second signal having a wavelength different from the first signal;

the optical detection module is used for detecting the light intensity of the reflected second signal and converting the light intensity into an electric signal; and

the light source control module is used for detecting whether the optical fiber leaks light or not according to the electric signal;

the optical fiber is used for transmitting a light beam combined by the first signal and the second signal, the coating film is a dichroic film, and the dichroic film is used for transmitting the first signal and reflecting the second signal.

24. The split light engine of claim 23, further comprising:

a power supply assembly for powering the light source assembly;

the light source control module is used for controlling the power supply assembly to be closed according to the detected abnormal electrical signal.

25. A separated projector, comprising:

a split carriage for generating modulated light; and

a lens, configured to convert the modulated light into an imaging light beam and emit the imaging light beam, wherein the split carriage is the split carriage according to any one of claims 1 to 24.

26. A split projection system, comprising:

the separated projector is used for emitting imaging light beams and emitting the imaging light beams out; and

a projection screen disposed on a light path of the split projector for emitting the image beam, and configured to receive the image beam, wherein the split projection system is the split projector according to claim 25.

27. The split projection system of claim 26, wherein the split projection system is a vehicle, and wherein the projection screen is a roof, a side window, or a rear window.

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