CN-122015052-A - Self-adaptive lighting device for capturing movement of high-speed visual insect

CN122015052ACN 122015052 ACN122015052 ACN 122015052ACN-122015052-A

Abstract

The invention discloses a self-adaptive lighting device for capturing high-speed visual insect motion, which adopts an axial stacked integrated structure, and comprises a control driving assembly, a multispectral light source assembly and a mixed optical assembly, wherein the control driving assembly is electrically connected with the multispectral light source assembly, the multispectral light source assembly comprises an annular substrate and a plurality of light emitting units which are arranged on the annular substrate, the light emitting units are concentrically distributed on the annular substrate in a multi-circle way, red light chips, green light chips and blue light chips in the light emitting units are arranged in a staggered way, and the mixed optical assembly is positioned on a light emitting path of the multispectral light source assembly and comprises a double-sided compound eye light homogenizer. The invention solves the contradiction between the high frame rate imaging requirement and the biological low interference requirement, and realizes high-quality uniform illumination.

Inventors

WANG WEI
GU XIAOHAO
LEI XIUJUN
CHENG JIE
ZHANG SHANMING
SUN JIE
CHEN HUAN
WANG SHENGRONG
GUO CHANGJIE
HONG JUNWEI

Assignees

合肥中科君达视界技术股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260228

Claims (10)

1. The utility model provides a self-adaptation lighting device for high-speed vision insect motion catches, its characterized in that, this self-adaptation lighting device adopts axial range upon range of integrated structure, self-adaptation lighting device includes control drive assembly, multispectral light source subassembly and mixed optical subassembly, control drive assembly with multispectral light source subassembly electricity is connected, multispectral light source subassembly include annular base plate and arrange in a plurality of light emitting units on the annular base plate, light emitting unit is the concentric ring-shaped distribution of multiturn on the annular base plate, just red light chip, green light chip, the blue light chip in the light emitting unit adopt staggered arrangement, mixed optical subassembly is located on the light-emitting path of multispectral light source subassembly, mixed optical subassembly includes two-sided compound eye light homogenizer.
2. The device of claim 1, wherein the effective clear aperture of the two-sided compound eye homogenizer covers the entire light emitting area of the annular array of light emitting units such that the marginal outgoing light beams of the light emitting units enter the two-sided compound eye homogenizer intact.
3. The adaptive illumination device for high-speed visual insect motion capture as recited in claim 2, wherein the pitch of the annularly arranged red light chips, green light chips and blue light chips is smaller than the aperture of a single microlens unit of the double-sided compound eye homogenizer.
4. The device of claim 3, wherein the light-emitting units on the annular substrate comprise at least three strip-shaped light-emitting channels distributed radially, and the strip-shaped light-emitting channels are matched with the micro-lens array of the double-sided compound eye light homogenizer.
5. The adaptive lighting device for high-speed visual insect motion capture of claim 4, wherein said light-emitting strip channel is a 120-degree included angle Y-shaped light-emitting channel.
6. The adaptive illumination device for high-speed vision insect motion capture as recited in claim 5, wherein the hybrid optical assembly further comprises a primary optical lens array, each of the primary lens units in the primary optical lens array being respectively and correspondingly housed outside one of the light emitting units, the primary optical lens array being configured to collimate the large-angle divergent light of the light emitting units into a narrow light beam, the divergence angle of the narrow light beam matching the incident numerical aperture of the double-sided compound eye homogenizer.
7. The adaptive illumination device for high-speed vision insect motion capture of claim 6, wherein the double-sided compound eye homogenizer comprises a first compound eye plate and a second compound eye plate, the first compound eye plate dividing a light beam from the activated light emitting unit on the multispectral light source assembly into a plurality of sub-light beams, the second compound eye plate superimposing the plurality of sub-light beams into a target illumination plane.
8. The adaptive lighting device for high-speed visual insect motion capture of claim 7, wherein the red light chip, the green light chip, and the blue light chip are each connected to separate PWM dimming channels of the control drive assembly.
9. The adaptive lighting device for high-speed visual insect motion capture of claim 8, wherein the light exiting means of the hybrid optical assembly further comprises an infrared cut-off filter cooperating with the pulsed light emission mode of the multi-spectral light source assembly.
10. A method of high-speed visual insect motion capture lighting control based on the apparatus of any one of claims 1-7, wherein the method is implemented by synergistic cooperation of electronic modulation of a multispectral light source assembly and optical transformation of a hybrid optical assembly, the method comprising the steps of: s1, receiving an exposure synchronizing signal from external high-speed image acquisition equipment and spatial position information of an insect target through the control driving assembly; S2, the control driving assembly activates a specific luminous area corresponding to the insect target azimuth on the multispectral light source assembly according to the spatial position information and forms an asymmetric discrete incident light field; S3, utilizing the double-sided compound eye light homogenizer to divide and superimpose the wave front of the asymmetric discrete incident light field generated in the step S2, and reconstructing a local illumination light spot in the area where the insect target is located; S4, the control driving assembly controls and activates the driving proportion of the red light chip, the green light chip and the blue light chip in the light emitting unit according to the types of insect targets, and the three-color light beams are spatially mixed by using the double-sided compound eye light homogenizer to output colorless and separated synthesized spectrum illumination; And S5, responding to the exposure synchronizing signal, the control driving assembly drives the light emitting units in the specific light emitting area determined in the step S2, and emits light pulses according to the driving proportion of the red light chip, the green light chip and the blue light chip determined in the step S4, wherein the duration of the light pulses is controlled within the single-frame effective exposure time of the high-speed image acquisition equipment, and the starting time of the light pulses is kept synchronous with the starting time of the effective exposure time.

Description

Self-adaptive lighting device for capturing movement of high-speed visual insect Technical Field The invention relates to the technical field of optical illumination and high-speed imaging, in particular to a self-adaptive illumination device for capturing high-speed visual insect motion. Background In the front research fields of insect behaviours, bionic aerodynamics, neuroecology and the like, a three-dimensional motion capturing technology based on high-speed multi-view vision is a key means for analyzing fine motions and flight mechanisms of insects, and in order to clearly capture high-frequency flapping and rapid displacement details of insect wings, a shooting frame rate of a high-speed camera system is usually required to be set to be 1000fps to 5000fps or even higher. At such high photographing frame rates, the exposure time of a single frame image is extremely compressed, and according to the sensitization principle, in order to ensure that the imaging has a sufficient signal-to-noise ratio, definition, and sufficient depth of field, the illumination system must provide an extremely high luminous flux density. Currently, existing high-speed imaging illumination solutions commonly employ high-power halogen lamps, metal halogen lamps, or high-power LED arrays for global continuous illumination, however, this high-intensity continuous illumination mode has serious drawbacks in the observation for active micro-organisms, such as insects, in particular in the following aspects: 1. The heat effect interference, while the traditional highlight light source emits visible light, a large amount of infrared radiation is often accompanied, the temperature of the observed microenvironment is rapidly increased under the state of high-power continuous opening, and the insect is used as a temperature-changing animal and is sensitive to the temperature, so that the active or escape behavior of the insect is likely to be caused by stress response to high temperature, rather than the natural behavior expected by experimental design, and research data distortion is caused. 2. Behavioral disturbance, on the one hand, the continuous high-intensity light environment can cause continuous nervous tension and physiological force to photophobic insects, and on the other hand, many insects possess extremely sharp ultraviolet vision channels for navigation, foraging or puppet. The existing general white light LED light source often contains ultraviolet band radiation invisible to human eyes but visible to insects, so that the sense organs of the insects are interfered, and normal communication and navigation mechanisms of the insects are interfered. 3. In terms of optical performance, a traditional LED array light source is generally formed by simply arranging discrete lamp beads, and a projected light field usually presents Gaussian distribution with too bright center and too dark edge, so that multiple images or brightness rapid changes are easily generated if insects move to the edge of a light spot or an overlapping area of different LEDs during multi-vision three-dimensional reconstruction, and the feature extraction precision and the point cloud reconstruction quality of a severe image stereo matching algorithm are very easy to generate. Accordingly, there is a difficult reconciliation between obtaining high quality high speed images and maintaining the natural state of living beings in the prior art, and there is a need for an adaptive illumination device for high speed visual insect motion capture that addresses the above-described problems. Disclosure of Invention Aiming at the problems in the prior art, the invention provides a self-adaptive lighting device for capturing the movement of high-speed visual insects, so as to solve the contradiction between the high-frame-rate imaging requirement and the biological low-interference requirement and realize high-quality uniform lighting. In order to achieve the above purpose, the self-adaptive lighting device for capturing high-speed visual insect motion adopts an axial stacked integrated structure, the self-adaptive lighting device comprises a control driving assembly, a multispectral light source assembly and a mixed optical assembly, the control driving assembly is electrically connected with the multispectral light source assembly, the multispectral light source assembly comprises an annular substrate and a plurality of light emitting units arranged on the annular substrate, the light emitting units are concentrically distributed on the annular substrate in a plurality of circles, red light chips, green light chips and blue light chips in the light emitting units are arranged in a staggered mode, and the mixed optical assembly is positioned on a light emitting path of the multispectral light source assembly and comprises a double-sided compound eye light homogenizer. As a further optimization of the above scheme, the effective clear aperture of the double-sided compo