TWI781881B - Active sensor high-efficiency light field projection device - Google Patents

Abstract

An active sensor high-efficiency light field projection device includes a plurality of light emitting units. An optical axis of light beams which are emitted from the light emitting units individually projected to the center of a light emitting convex lens. The optical axes of the light emitting units and the optical axis of the light emitting convex lens are an optical coaxial relationship, so that each of the projected beams can efficiently radiate into the required light field range. The active sensor high-efficiency light field projection device further includes at least one emitting convex lens sheet, a multi-angle board carrier, and a bearing seat. The emitting convex lens sheet includes the emitting convex lens, the bearing seat has a seat body, and the seat body is provided with a plurality of seat bodies mounting surface. The mounting surfaces of the bases respectively face the lens center of the emitting convex lens, the light emitting units are respectively electrically connected to the multi-angle board carrier and then arranged on the mounting surface of the base of the carrier; the mounting surfaces of the individual light emitting units. The optical axis should be directed toward the center of the emitting convex lens, so the aperture of each projected beam can evenly cover the emitting convex lens, and the light beam of the light emitting unit can be efficiently projected to the light field of the sensing range through the light emitting convex lens, which improves the emission of the sensor. The energy of the light field is uniformly projected, and the high efficiency of the projected light source is ensured.

Description

Active Sensor High-Efficiency Light Field Projection Device

The invention relates to a projection device capable of creating a high-efficiency light field, which can be applied to any sensor that needs to create a projected light field range. The optical axes of the LEDs of the light-emitting module respectively shoot to the mirror center of the emitting convex lens, especially a sensor for sensing the approach, entry or departure of people or objects, which can make the light emitted by the light-emitting LEDs of the sensor be able to High-efficiency light field uniformly projected to the sensing range can increase the energy of the light field emitted by the sensor.

When it is necessary to create a projected (sensing) light field range, an infrared light sensor can be installed to sense the approach, entry or departure of people or objects. However, the existing light sensor, when the emitted light is projected onto the convex lens, cannot ensure that the optical axis of the LED projected light is coaxial with the optical axis of the geometric optical projection angle of the convex lens, so it is difficult for the angle of the LED emitted light to evenly cover the convex lens lens , so that the energy of the light field projected into the sensing range is uneven, which indirectly leads to the unevenness of the light intensity reflected back to the sensor within the light field range.

The technical problem to be solved by the present invention is to provide an active sensor high-efficiency light field projection device for the deficiencies of the prior art, including a light emitting part, the light emitting part includes at least one emitting convex lens sheet and at least one light emitting module Group. The emitting lenticular sheet contains at least one Convex lens. The light emission module includes a multi-angle circuit board carrier and a multi-angle emission bearing seat. The multi-angle circuit board carrier includes a plurality of light emitting units and a multi-angle combined circuit board, the combined circuit board is formed by electrically connecting a plurality of light emitting independent circuit boards, and the light emitting units are respectively electrically installed on these The light emitting independent circuit board has a multi-angle circuit board carrier mounting surface on the back. Wherein the multi-angle launch bearing seat has a launch seat body, the launch seat body is provided with a multi-angle seat body mounting surface, the multi-angle circuit board carrier mounting surface is correspondingly arranged on the seat body mounting surface, and the multi-angle mounting surfaces of the two correspond to each other Bonding; the light emitting units installed on the multi-angle circuit board carrier can individually face the emitting convex lens, and the corresponding angles between the light emitting units and the emitting convex lens can allow the optical axes of the light emitting units to project onto the emitting convex lens individually. At the mirror center of the convex lens, the light beams individually projected by the light emitting units can individually and evenly cover the emitting convex lens, forming a high-efficiency projected light field.

The beneficial effect of the present invention is that the active sensor high-efficiency light field projection device provided by the present invention includes a plurality of light emitting units and at least one emitting convex lens sheet, and these light emitting units can be arranged in multiple arrays, and these The optical axis emitted by the light emitting unit is close to the same axis as the optical axis of the geometric optics of the emitting convex lens, and the projected light angle can evenly cover the emitting convex lens with the aperture, so the light energy projected by individual light emitting units at different angles can be projected uniformly to the The light field of the sensing range is used to sense the approach, entry or departure of people or objects.

In order to further understand the features and technical content of the present invention, please refer to the following detailed description and drawings related to the present invention. However, the provided drawings are only for reference and description, and are not intended to limit the present invention.

01: Light emitting module

110: Multi-angle circuit board carrier

111: Light emitting unit

112: Light emitting combination circuit board

113: V-groove

114: Mounting surface of light-emitting combined circuit board

115: Groove

120: Multi-angle launch bearing seat

121: connecting conductor

122:Launcher body

123: Seat mounting surface

124: positioning column

02:Visible light emission module

210: Visible light circuit board carrier

211: Visible light emission unit

212:Visible light combination circuit board

220: Visible light bearing seat

221:Visible light link conductor

222: Visible light base

223: Mounting surface of visible light base

03: Photoelectric signal conversion carrier

301: Guang Guang receiving unit

302: Optical near receiving unit

04: Near the light receiving part

410: Near receiving convex lens sheet

401: close receiving convex lens group

402: Visible light emitting convex lens group

05: Light emitting part

510: launch convex lens sheet

501: launch convex lens

06: Light and wide receiving part

610: wide receiver convex lens sheet

601: wide receiver convex lens group

07: Inductive signal processing carrier

701: Light field switch

08: Sensing lens

09: Housing

901: Bottom shell

902: upper shell

903: Light field switch hole

904: filter lens

905: shell

10: Traffic sensor

G: Light field projection range

H1: near receiving optical axis

I: Wide light receiving and reflection range

I1: Wide receiving optical axis

J1: Optical axis of light emission

K: Visible light range

K1: Optical axis of visible light emission

LF-u-l: upper left LED projected light field

LF-m-l: Left middle LED projected light field

LF-d-l: lower left LED projected light field

LF-u-c: upper middle LED projected light field

LF-m-c: centered LED projected light field

LF-d-c: Middle and lower LED projected light field

LF-u-r: upper right LED projected light field

LF-m-r: Right middle LED projected light field

LF-d-r: Lower right LED projected light field

u-r: upper right optical axis

u-c: middle and upper optical axis

u-l: upper left optical axis

m-r: right middle optical axis

m-c: median optical axis

m-l: left middle optical axis

d-r: lower right optical axis

d-c: middle and lower optical axis

d-l: lower left optical axis

s-r: right optical axis

s-c: middle optical axis

s-l: left optical axis

FIG. 1 is a three-dimensional exploded view of a sensing lens and a casing of the present invention.

FIG. 2 is a schematic diagram of relative positions of light emitting parts inside the sensing lens of the present invention.

Figure 3 is the internal light emission of the device for high-efficiency light field projection of the active sensor of the present invention Schematic diagram of the relative location of the parts.

4 is an exploded view of the light emission module and the visible light emission module inside the active sensor high-efficiency light field projection device of the present invention.

Fig. 5 is a schematic diagram showing the coaxial relationship of the individual optical angles of the active sensor high-efficiency light field projection device of the present invention.

FIG. 6 is a schematic diagram of the high-efficiency light field projection device of the active sensor of the present invention, which extends the individual optical axes projected by the light emitting part in FIG.

Fig. 7 is a schematic diagram of the high-efficiency light field projection device of the active sensor of the present invention. Its multiple light emitting units in a wide range and the optical axes of visible light beams are projected to the center of the convex lens at different angles to generate a schematic diagram of the coaxial relationship of individual optical angles. .

Fig. 8 is a device for high-efficiency light field projection of an active sensor of the present invention, which extends the individual optical axes projected by the light emission and visible light parts in Fig. 7, and generates a schematic diagram of the light field range corresponding to individual radiation rays.

Fig. 9 is a schematic diagram of the high-efficiency light field projection device of the active sensor of the present invention. The optical axes of the multiple light emitting units and visible light beams in the near range are projected to the center of the convex lens at different angles to generate individual optical coaxial relationships.

Fig. 10 is a device for high-efficiency light field projection of an active sensor of the present invention, which extends the individual optical axes projected by the light emitting and visible light parts in Fig. 9, and generates a schematic diagram of the light field range corresponding to individual radiation rays.

Fig. 11 is a schematic diagram of the high-efficiency light field projection device of the active sensor of the present invention, the light in the high-efficiency light field range is reflected to the wide-receiving and near-receiving convex lens groups and individually focused to the light receiving unit.

Figure 12 is a device for high-efficiency light field projection of the active sensor of the present invention, showing traffic The reflection optical axis of the light field range, which is reflected to the schematic diagram of the light wide receiving part and the light near receiving part in Fig. 11 .

The following are specific examples to illustrate the implementation methods disclosed in the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various modifications and changes can be made to the details in this specification based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only for simple illustration, and are not drawn according to the actual size, which is stated in advance. The following embodiments will further describe the relevant technical content of the present invention in detail, but the disclosed content is not intended to limit the protection scope of the present invention. In addition, the term "or" used herein may include any one or a combination of more of the associated listed items depending on the actual situation.

Please refer to FIG. 1 to FIG. 5 , the present invention provides a high-efficiency light field projection device for an active sensor. The high-efficiency light field projection device for an active sensor is a sensor with a variable light field range. It can be installed in various projection (sensing) light fields to sense the approach, entry or departure of people or objects, ensuring high efficiency of projection light sources. The active sensor high-efficiency light field projection device of the present invention includes at least one emitting convex lens sheet 510 , multiple multi-angle circuit board carriers 110 and a bearing seat 120 . The emitting lenticular lens sheet 510 includes at least one emitting lenticular lens 501 and adjacently includes at least one light receiving portion, and the light receiving portion includes a light receiving lenticular lens sheet composed of a plurality of light receiving units and a plurality of lenticular lenses. The light emitting units 111 project a light emitting optical axis. A plurality of light emitting units 111 are disposed on a photoelectric signal conversion carrier 03 . The light field modulation circuit includes a plurality of light field switches 701 and a plurality of electronic switch elements 702 , and the light field switches 701 are exposed in a light field switch hole 903 . The light-receiving unit includes a light-receiving convex lens sheet. The light-receiving convex lens sheet includes a near-receiving convex lens sheet 410 and a wide-receiving convex lens sheet 610 . The wide-receiving convex lens sheet 610 includes a wide-receiving convex lens group 601 . The light receiving unit also includes a wide light receiving unit 301 and a near light receiving unit 302 . The optical wide receiving unit 301 is electrically disposed on the photoelectric signal conversion carrier 03 . The light receiving unit may be an infrared receiving LED.

The multi-angle circuit board carrier 110 includes a plurality of light emitting units 111 , a light emitting combined circuit board 112 , a V-shaped groove 113 , a light emitting combined circuit board mounting surface 114 and a groove 115 . The light emitting units 111 are respectively disposed on the multi-angle circuit board carriers 110 , that is, one light emitting unit 111 is disposed on each multi-angle circuit board carrier 110 . The multi-angle circuit board carrier 110 is flat, and the light emitting units 111 are respectively arranged on one side (front) of the multi-angle circuit board carrier 110, and the light emitting units 111 are electrically connected to the multi-angle circuits respectively. board carrier 110 . These multi-angle circuit board carriers 110 can be independent entities, and these multi-angle circuit board carriers 110 can also be connected to each other as a whole, and the mode of setting V-shaped grooves 113 between each other makes these multi-angle circuit board carriers 110 can be bent and adjusted to different angles. The back of the multi-angle circuit board carrier 110 is a plurality of multi-angle circuit board carrier mounting surfaces. The multi-angle circuit board carrier 110 contains multiple light emitting individual circuit boards. The light-emitting independent circuit boards face the emitting convex lens 501 at different angles and are electrically connected to form a light-emitting combined circuit board.

The light-emitting combined circuit board is cut with a plurality of V-shaped grooves 113 and grooves 115 corresponding to the joint positions of the mounting surfaces 123 of a flat board, thereby splitting the flat board. The circuit board of the flat board and the mounting surface 123 of the flat panel after being folded form a structure with angles corresponding to each other. At the center, the back of the light-emitting combined circuit board is the mounting surface of the light-emitting combined circuit board, and they are attached to the base mounting surface 123 of the emitting base 122 at corresponding angles, and the electrical devices are on the light-emitting combined circuit board. The optical axis of the light beam emitted by the light emitting unit 111 can project toward the mirror center of the emitting convex lens 501 in a relationship close to the optical coaxiality, so that the light beam can evenly cover the emitting convex lens 501 .

A plurality of light-emitting units 111 are respectively electrically disposed on the fronts of a plurality of light-emitting combined circuit boards 112 at different angles, and the back of the light-emitting combined circuit board 112 is a light-emitting combined circuit board mounting surface 114 . The light-emitting combined circuit board faces the mirror center body of the emitting convex lens at different angles The mounting surface 123 and the mounting surface 114 of the light-emitting combined circuit board are respectively integrated at the same angle to form a light-emitting module 01 . Wherein the light-emitting optical axis J1 of individual light-emitting unit 111 casts to the mirror center of emitting convex lens 501, the light beam will be able to evenly cover on the emitting convex lens 501, because the two are close to the optical coaxial relationship, so the emitting light beam can be individually and efficiently Projected to the light field projection range G (as shown in Figure 6).

The light emitting units 111 can be used to emit light beams. In this embodiment, the light emitting units 111 can be infrared LED emitters and can be used to emit infrared rays, but not limited thereto. The light emitting units 111 can be SMD or DIP type. The light emitting units 111 are provided in multiples, and the light emitting units 111 are arranged in an array, but not limited thereto. The light emitting units 111 are arranged in at least one row to form a near receiving sensor, and the light emitting units 111 can also be arranged in multiple rows such as two, three or four rows to form a wide receiving sensor. When the light emitting units 111 have only one row, then the row includes a plurality of light emitting units 111; There are two, three, four, etc. multiple light emitting units 111 .

In this embodiment, the light emitting units 111 can be electrically disposed on the photoelectric signal conversion carrier 03, the photoelectric signal conversion carrier 03 can be a circuit board, and the light emitting units 111 pass through the photoelectric signal conversion carrier 03 through the circuit Or the connection conductor 121 is electrically connected to the optical field modulation circuit, but not limited thereto. The light field switch 701 individually controls the light emitting units 111 to project light emitting optical axes J1 at different angles, and the light emitting optical axes J1 can be infrared rays, but not limited thereto. The light field modulation circuit can be switched on and off in different modes, and combined into various light fields with different depths and widths. The opening and closing of the light field modulation circuit can use existing electronic technology or mechanical switches, etc. Controlled by means of switching, because the switching method is the prior art, so it will not be repeated and limited.

Please refer to Figure 1 and Figure 2 again. The sensing lens 08 may include a light near receiving part 04 , a light emitting part 05 , and a light wide receiving part 06 . The light near receiving part 04 can include a near receiving convex lens sheet 410, a plurality of light near receiving units 302, a plurality of visible light emitting units 211 and a visible light emitting convex lens group 402; the light emitting part 05 includes a emitting convex lens sheet 510 and a plurality of light emission The unit 111 ; the light receiving part 06 includes a wide receiving convex lens sheet 610 and a plurality of light receiving units 301 , and the light receiving part may include the light near receiving part 04 and the light receiving part 06 . The light receiving unit and the light emitting unit 111 can be disposed on the photoelectric signal conversion carrier 03 , but not limited thereto. The sensing lens 08 may also include a visible light emitting portion.

The light emitting part 05 and the visible light emitting part can be separated from each other in the same direction. The light emitting part includes a visible light emitting unit 211 and a visible light emitting convex lens. The visible light beam projected by the visible light emitting unit 211 is radiated and displayed in front of the light field through the visible light emitting convex lens. edge position.

When the wide-receiving reflection range I and the visible light range K (as shown in FIG. 12 ) in the passing range are reflected to the wide-receiving convex lens group 601 due to the intervention of foreign objects, the light is focused on the light wide-receiving unit 301 in the sensing lens 08 according to the optical principle and converted The photoelectric signal is output through the signal processing system to sense the approach, entry or departure of people or objects.

The sensing lens 08 includes a light emitting module 01 . The light emission module 01 includes a multi-angle emission carrier 120 and a multi-angle circuit board carrier 110. The multi-angle emission carrier 120 includes a connecting conductor 121, an emission seat 122, at least a seat mounting surface 123 and at least one positioning Column 124. The mounting surface 123 of the base body can be arranged in a variety of different angles and face the mirror center of the emitting convex lens 501 individually.

The connecting conductor 121 is made of a conductor, and the connecting conductor 121 is arranged on the base body 122 at intervals, and the two ends of the connecting conductor 121 can pass through the base body 122, that is, one end of the connecting conductor 121 can pass through the mounting surface of the base body 123, and one end of the connecting conductor 121 can be passed through and electrically connected to these multi-angle circuit board carriers 110, so that the connecting conductor 121 can not only be used to position the multi-angle circuit board carrier 110, but also can be used as a position for signal connection. The other end of the connection conductor 121 can also be electrically connected to a multi-angle circuit board carrier 110 of a photoelectric signal conversion carrier 03 . In addition, the positioning posts 124 (positioning posts) can also be made of conductors, so that these positioning posts 124 can also be used as connecting conductors.

These base mounting surfaces 123 can be adjacently arranged, and the number of these base mounting surfaces 123 Corresponding to the number of the light emitting units 111 and the multi-angle circuit board carriers 110, the base mounting surfaces 123 can be flat, and the base mounting surfaces 123 should correspond to the multi-angle circuit board carriers 110 respectively. The other side (the back, that is, the multi-angle circuit board carrier mounting surface). The mounting surface of the multi-angle circuit board carrier and the mounting surface of the seat body are attached to each other. The multi-angle circuit board carriers 110 are respectively arranged on the base mounting surfaces 123, and the multi-angle circuit board carriers 110 can also be properly fixed on the base mounting surfaces 123 by means of gluing, so that the The light emitting units 111 can be respectively electrically mounted on the multi-angle circuit board carriers 110 and correspondingly disposed on the bearing seat 120 . Since the optical axes of these individual light emitting units 111 should face the mirror center of the emitting convex lens 501, the projected light angles can evenly cover the emitting convex lens 501 (as shown in FIGS. 5 to 7 ). Correspondingly, the light generated by the geometrical optics can be efficiently projected into the light field projection range G (as shown in FIG. 8 ), which improves the light field energy emitted by the sensor and ensures high efficiency of the light source. FIG. 5 and FIG. 6 respectively show the corresponding relationship between the light emitting optical axis J1 and the projected light field projection range G.

The positioning posts 124 are used for positioning and outputting the overall signals of the multi-angle circuit board carriers 110 . The positioning posts 124 can position the multi-angle circuit board carriers 110 in a penetrating manner, so that the multi-angle circuit board carriers 110 can be accurately arranged on the seat mounting surfaces 123 .

The light near receiving part 04, the light emitting part 05, and the light wide receiving part 06 emit and receive light in the same direction, and are separated and connected with each other to form a wide and near integrated sensing lens 08. The light field projection range of light emission is G After the light is reflected, a near-receiving optical axis H1 (that is, a near-receiving light) and a wide-receiving optical axis I1 (that is, a wide-receiving light) are formed, wherein the light-emitting part 05, the near-receiving part 04 and the wide-receiving part 06 generate light According to the corresponding relationship between emission and reception, the sensing lens 08 can individually receive the wide receiving optical axis 11 and the near receiving optical axis H1.

The light-emitting part 05 and the light-receiving part 06, both of which can emit and receive light in the same direction and are separated and connected with each other to form a sensing lens 08, wherein the light-emitting part 05 and the light-receiving part 06 generate a corresponding relationship between light emission and reception , the sensing lens 08 will be able to receive light from wide receivers Receive the wide receiving optical axis 11 of reflection range I (as Fig. 11, Fig. 12). FIG. 11 and FIG. 12 respectively represent the corresponding relationship between the wide-receiving optical axis 11 and the wide-receiving reflection range I.

The light emitting part 05 and the light near receiving part 04, both of which can emit and receive light in the same direction and are separated and connected with each other to form a sensing lens 08, wherein the light emitting part 05 and the light near receiving part 04 have a corresponding relationship between emission and reception , the sensing lens 08 can receive light near the receiving optical axis H1 of the reflecting range H.

The sensing lens 08 can also include at least one visible light emitting convex lens group 402 and a plurality of visible light emitting units 211. The visible light emitting unit 211 and the visible light emitting convex lens group 402 project the visible light emitting optical axis K1 according to the optical principle (as shown in FIG. 7 ), displaying the visible light range K (as shown in FIG. 8 ), wherein the visible light emitting unit 211 can be a visible light LED or a visible light laser, but it is not limited thereto. FIG. 7 and FIG. 8 respectively show the corresponding relationship between the visible light emitting optical axis K1 and the visible light range K.

The emitting convex lens 501 can be arranged in front of the light emitting unit 111 corresponding to the requirements of geometric optics. The emitting convex lens 501 can be biconvex lens, plano-convex lens or Fresnel convex lens, etc. The form of the emitting convex lens 501 is not limited.

As shown in Figures 5 to 10, the upper left LED projected light field LF-u-l refers to the light field projected by the upper left optical axis u-l, the left middle LED projected light field LF-m-l refers to the left middle optical axis m-l projected light field, and the lower left The LED projected light field LF-d-l refers to the light field projected by the lower left optical axis d-l. The projected light field LF-u-c of the upper middle LED refers to the light field projected by the upper middle optical axis u-c, the projected light field LF-m-c of the central LED refers to the light field projected by the central optical axis m-c, and the projected light field LF-d-c of the lower middle LED is Refers to the light field projected by the middle and lower optical axis d-c. The upper right LED projected light field LF-u-r refers to the light field projected by the upper right optical axis u-r, the right middle LED projected light field LF-m-r refers to the right middle optical axis m-r projected light field, and the lower right LED projected light field LF-d-r is Refers to the light field projected by the lower right optical axis d-r, the right optical axis s-r, the middle optical axis s-c, and the left optical axis s-l are respectively formed by three visible light emitting units 211 (right, middle, left) on the visible light combined circuit board 212 emitted light axis. Among them, u stands for up, m stands for middle, d stands for down, l stands for left, c stands for center, and r stands for right.

As shown in FIG. 2 to FIG. 4 , the photoelectric signal conversion carrier 03 can be a circuit board, and the optical wide receiving unit 301 and the optical near receiving unit 302 can be electrically disposed on the photoelectric signal conversion carrier 03 . The light-wide receiving unit 301 and the light-near receiving unit 302 are not limited to be arranged at the intervals on both sides of the light emitting unit 111, and the interval positions can be interadjusted under the condition of the mechanism design requirements. The above-mentioned diagrams and descriptions are only for reference , not intended to limit the present invention.

One or two light-receiving convex lens sheets can be arranged. The wide receiving convex lens sheet 610 comprises a wide receiving convex lens group 601, and the near receiving convex lens sheet 410 comprises a near receiving convex lens group 401, and the two light receiving convex lens sheets (near receiving convex lens sheet 410, wide receiving convex lens sheet 610) are individually combined into one by a plurality of convex lenses. The receiving convex lens groups (near receiving convex lens group 401 and wide receiving convex lens group 601 ) are respectively focused on the light near receiving unit 302 and the light wide receiving unit 301 according to the requirements of geometric optics. The light beams emitted by these light emitting units 111 are projected onto the emitting convex lens 501 according to the requirements of geometric optics, and are combined into a passing light field range according to the radiation of light rays at different angles. The light reflected in the light field range can pass through the wide receiving convex lens. The group 601 and the near receiving convex lens group 401 focus on the light wide receiving unit 301 and the light near receiving unit 302 respectively. A visible light emitting convex lens group 402 can also be further disposed on the near receiving convex lens sheet 410 .

In this embodiment, as shown in Figure 1, the traffic sensor 10 can also include a casing 09, a sensing lens 08 and a sensing signal processing carrier 07, and the casing 09 includes a bottom shell 901, an upper shell 902 and A light field switch hole 903 may also include a housing 905 and a filter lens 904 . The induction signal processing carrier 07 can be provided with a light field switch 701 , the light field switch 701 is exposed corresponding to the position of the light field switch hole 903 and forms a modular design for adjusting the range of the light field.

As shown in FIG. 4 , the visible light emission module 02 includes a visible light circuit board carrier 210 and a visible light carrier 220 . The visible light circuit board carrier 210 includes a plurality of visible light emitting units 211 and a plurality of visible light combined circuit boards 212 . The visible light emitting units 211 are respectively disposed on the visible light combined circuit boards 212, and the visible light emitting units 211 are respectively electrically disposed on the visible light combined circuit. The front side of the board 212 , and the visible light emitting units 211 can be electrically installed on the visible light combined circuit boards 212 respectively. The visible light bearing base 220 has a plurality of visible light connecting conductors 221 and a visible light base body 222. The visible light base body 222 is provided with a plurality of visible light base body mounting surfaces 223. Correspondingly, the visible light combined circuit boards 212 are properly fixed on the mounting surfaces 223 of the visible light base body, and the visible light emitting units 211 can be electrically disposed on the visible light combined circuit boards 212 and on the visible light carrying base 220 respectively. The optical axis of the beam emitted by the visible light emitting unit 211 faces the mirror center of the visible light emitting convex lens group 402, so the angle of the projected visible light rays can evenly cover the visible light emitting convex lens group 402, due to the corresponding relationship between the two and the optical principle. The visible light emitting optical axis K1 (as shown in FIG. 9 ) can efficiently project a visible light range K (as shown in FIG. 10 ). FIG. 9 and FIG. 10 respectively show the corresponding relationship between the visible light emitting optical axis K1 and the visible light range K.

These visible light combined circuit boards 212 can be a plurality of independent individual circuit boards and are electrically connected to each other, or these visible light combined circuit boards 212 are an integral structure, and the back of the visible light combined circuit board 212 corresponds to the above-mentioned multiple independent individual circuits A plurality of V-shaped grooves 113 are cut at the same position of the board, and the V-shaped grooves 113 make the visible light combined circuit board 212 of the overall structure and the visible light combined circuit board 212 of a single independent body broken and electrically connected at the same position.

Please refer to Fig. 12, in this embodiment, these light-emitting units 111 are arranged into upper, middle and lower three columns, each column has three light-emitting units 111, and the three light-emitting units 111 arranged on the upper row emit light from the upper right The optical axis u-r, the upper middle optical axis u-c, and the upper left optical axis u-l, the three light emitting units 111 arranged in the middle column emit the optical axis right middle m-r, the middle optical axis m-c, and the left middle optical axis m-l, which are arranged in the following three The light emitting unit 111 emits the lower right optical axis d-r, the lower middle optical axis d-c, the lower left optical axis d-l, the upper right optical axis u-r, the upper middle optical axis u-c, the upper left optical axis u-l, the right middle optical axis m-r, the middle light axis m-c, the left The middle optical axis m-1, the lower right optical axis d-r, the lower middle optical axis d-c, and the lower left optical axis d-l form an optical coaxial relationship with the emitting convex lens 501, so the light beams emitted by these light emitting units 111 will evenly cover the emitting convex lens 501 on the lens. The emission beams of each light emission unit 111 in the light emission module 01 are directed at different angles to the emission The mirror center of the convex lens 501 projects the combined passing sensing light field range due to the optical principle.

These light-emitting units 111 project light-emitting optical axes J1 of different angles, and the light-emitting optical axes J1 of individual light-emitting units 111 are projected toward the mirror center of the emitting convex lens 501, and the light beam will be evenly covered on the emitting convex lens 501. Since the two are close to the optical coaxial relationship, the emitted light beams can be individually projected into the light field projection range with high efficiency. The visible light emitting unit 211 and the visible light emitting convex lens group 402 project the visible light emitting optical axis K1 according to the optical principle to display the visible light range. The light in the projected range of the light field emitted by the light is reflected to form a near-receiving optical axis H1 (near receiving light) and a wide-receiving optical axis I1 (i.e. wide-receiving light). The sensing lens can individually receive the wide-receiving optical axis I1 , The near receiving optical axis H1, the wide receiving optical axis I1, and the near receiving optical axis H1 are processed by a signal processing system before performing subsequent actions such as position display.

[Advantageous Effects of Embodiment]

The beneficial effect of the present invention is that the active sensor high-efficiency light field projection device provided by the present invention includes a plurality of light emitting units and at least one emitting convex lens sheet, and these light emitting units can be arranged in multiple arrays, and these The optical axis emitted by the light emitting unit is close to the same axis as the optical axis of the geometric optics of the emitting convex lens, and the projected light angle can evenly cover the emitting convex lens with the aperture, so the light energy projected by individual light emitting units at different angles can be projected uniformly to the The light field of the sensing range is used to sense the approach, entry or departure of people or objects.

The content disclosed above is only a preferred feasible embodiment of the present invention, and does not therefore limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made by using the description and drawings of the present invention are included in the application of the present invention. within the scope of the patent.

01: Light emitting module

110: Multi-angle circuit board carrier

111: Light emitting unit

112: Light emitting combination circuit board

113: V-groove

114: Mounting surface of light-emitting combined circuit board

115: Groove

120: Multi-angle launch bearing seat

121: connecting conductor

122:Launcher body

123: Seat mounting surface

124: positioning column

02: Visible light emission module

210: Visible light circuit board carrier

211: Visible light emission unit

212:Visible light combination circuit board

220: Visible light bearing seat

221:Visible light link conductor

222: Visible light base

223: Mounting surface of visible light base

03: Photoelectric signal conversion carrier

301: Guang Guang receiving unit

302: Optical near receiving unit

401: close receiving convex lens group

402: Visible light emitting convex lens group

510: launch convex lens sheet

501: launch convex lens

610: wide receiver convex lens sheet

601: wide receiver convex lens group

Claims (7)

A high-efficiency light field projecting device for an active sensor includes a light emitting part, and the light emitting part includes: at least one emitting lenticular sheet comprising at least one emitting lenticular lens; and At least one light emission module, the light emission module includes a multi-angle circuit board carrier and a multi-angle emission bearing seat; Wherein the multi-angle circuit board carrier includes a plurality of light-emitting units and a multi-angle combined circuit board, the combined circuit board is formed by electrically connecting a plurality of light-emitting independent circuit boards, and the light-emitting units are respectively electrically installed on These light-emitting independent circuit boards have a multi-angle circuit board carrier mounting surface on the back; Wherein the multi-angle launch bearing seat has a launch seat body, the launch seat body is provided with a multi-angle seat body mounting surface, and the multi-angle circuit board carrier mounting surface is correspondingly arranged on the seat body mounting surface, and the multi-angle seat body mounting surface of the two The mounting surfaces are attached to each other correspondingly; the light-emitting units installed on the multi-angle circuit board carrier can face the emitting convex lens individually, and the corresponding angles between the light-emitting units and the emitting convex lens can allow the light-emitting units The optical axes of the light beams are individually projected onto the mirror center of the emitting convex lens, and the light beams individually projected by the light emitting units can cover the emitting convex lens individually and uniformly, forming a high-efficiency projecting light field. The active sensor high-efficiency light field projection device as described in Claim 1, wherein the individual light-emitting circuit boards face the emitting convex lens at different angles and are electrically connected to form a light-emitting combined circuit board. The light-emitting combined circuit board cuts a plurality of V-shaped grooves and grooves from a flat circuit board corresponding to the positions where the multi-angle base mounting surfaces connect to each other, so as to crack the flat circuit board. The circuit board of the flat panel and the mounting surface of the base form a structure corresponding to each other in angles, similar to a light-emitting combined circuit board formed by electrically connecting and combining light-emitting independent circuit boards of a plurality of blocks, and the front side of the light-emitting combined circuit board The light-emitting units of the electrical device face the mirror center of the emitting convex lens at different angles, and the back of the light-emitting combined circuit board is the mounting surface of the light-emitting combined circuit board, and are attached to each other at corresponding angles. The base mounting surfaces of the emitting bases, the optical axes of the light beams emitted by the light emitting units of the light emitting combined circuit board can be projected to the mirror center of the emitting convex lens in a relationship close to the optical coaxial relationship, so that the light beams It can evenly cover the emitting convex lens. The active sensor high-efficiency light field projection device as described in Claim 1 further includes a light receiving part, the light emitting units are infrared LED emitters, and the light receiving units are infrared receiving LEDs. The active sensor high-efficiency light field projection device as described in claim 1 further includes a visible light emitting part, the light emitting part and the visible light emitting part are isolated from each other and project light beams in the same direction, and the visible light emitting part includes At least one visible light emitting unit and a visible light emitting convex lens, the visible light beam projected by the visible light emitting unit is projected and displayed at the front edge of the light field through the visible light emitting convex lens. The active sensor high-efficiency light field projection device as claimed in Claim 4, wherein the visible light emitting unit is a visible light emitting LED and a visible light laser. The active sensor high-efficiency light field projection device as described in claim 1, wherein the light emitting units are combined into a row, and the light emitting units respectively project light beams to the emitting convex lens, and the emitting convex lens is then in accordance with The optical principle radiates the light beam to the range of passing light field required in the near range. The active sensor high-efficiency light field projecting device as described in claim 1, wherein the light emitting units are combined into multiple columns, and the light emitting units respectively project light beams to the emitting convex lens, and the emitting convex lens is then According to the principle of optics, the light beam is radiated into the range of passing light field required by a wide range.

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