Portable EBAPS imaging test box

Abstract

The invention discloses a portable EBAPS imaging test system, which is characterized in that an integrating sphere with a standard A light source is integrated in a 20-inch luggage case, illumination can be adjusted by adjusting a diaphragm and an attenuation sheet, illumination coverage from 10 <-5 > lx to 10 lx is realized, milk white glass and the integrating sphere ensure uniformity of output illumination, and the portable EBAPS imaging test system has the advantages of high reliability and high reliability. Light enters the black box after illuminating the resolution target plate, interference of external stray light does not exist, the light is converged by the prime lens and is imaged on the EBAPS, the EBAPS and the low-light illuminometer can be switched freely so as to measure the illuminance of the EBAPS, the whole machine is installed on an aluminum honeycomb plate, and the size of the illuminance at the position of the EBAPS can be measured. A single person can carry a common long-distance vehicle so as to realize on-site demonstration of EBAPS imaging performance.

Description

Technical Field

[0001] The present invention relates to an imaging test device for an image sensor, and more particularly to a portable EBAPS imaging test box Background Art

[0002] An Electron Bombarded Active Pixel Sensor (EBAPS) is a high-performance vacuum-semiconductor hybrid device with characteristics of high sensitivity, high resolution, low noise, small volume, and low power consumption. It is becoming a new generation of advanced ultra-weak light imaging sensors and is widely used in fields such as military equipment, remote sensing mapping, and space exploration. Research on EBAPS has become a key development direction in the field of digital low-light night vision technology research

[0003] Existing EBAPS imaging tests are usually carried out in a laboratory, and its imaging process requires low-light conditions and depends on a darkroom. When carrying the device for demonstration to the customer, most customers do not have a darkroom environment, and it is impossible to control the illuminance to observe the imaging performance of EBAPS in real time, making it difficult to quickly, conveniently, and real-time display the imaging properties of EBAPS devices at different locations. Therefore, this application proposes a portable EBAPS imaging test box Summary of the Invention

[0004] Aiming at the difficulty of the traditional EBAPS imaging test system to quickly, conveniently, and real-time display the imaging properties of EBAPS devices at different locations, the present invention provides a portable EBAPS imaging test system that can be carried by a single person on common means of transportation to quickly and conveniently demonstrate the imaging properties of EBAPS at different locations

[0005] A portable EBAPS imaging test box includes a test box body (1), an aluminum honeycomb panel (2), an integrating sphere (15), and a dark box (4). It is characterized in that the aluminum honeycomb panel (2) is fixed on the test box body (1), a slot-shaped through hole is opened in the base of the integrating sphere (15) for fixing with the aluminum honeycomb panel (2), and a dark box (4), the display screen (19) of a micro-illuminance meter, and the switching power supply (14) of a standard A light source (3) are also installed on the aluminum honeycomb panel (2). The switching power supply (14) is fixed on the aluminum honeycomb panel (2) through self-designed pressure strips (18), (13)

[0006] Furthermore, the standard A light source (3) is connected to the light inlet of the integrating sphere (15), and a manually adjustable diaphragm (17) is installed between them. There are two manually adjustable diaphragms. After the manually adjustable diaphragm and before the light inlet, a milky white glass (16) is installed through a compression ring, and a closed filter holder (12) is fixed at the light outlet of the integrating sphere (15) by a setscrew

[0007] Furthermore, a hole is opened at a position corresponding to the light outlet on the light-tight box (4) for fixedly connecting with the closed filter holder, and a hole is opened on the same surface for the electrical and communication connections of the EBAPS (9) and the micro-photometer probe (8).

[0008] Furthermore, two axial slide rails (5) are fixed inside the light-tight box (4), and a longitudinal slide rail (6) is fixed on the axial slide rails (5). The longitudinal slide rail has two sliders that can slide independently.

[0009] Furthermore, the micro-photometer probe (8) is connected to the longitudinal slide rail (6) through a self-designed connecting piece (7). The connecting piece has three counterbores connected to the longitudinal slide rail (6) and two through holes connected to the micro-photometer probe (8).

[0010] Furthermore, the lens (10) is fixed on the dovetail plate through a three-point fixing ring and thus connected to the slider. The lens (10) is connected to the EBAPS (9) to be measured through a standard camera C-mount.

[0011] The beneficial effects of the present invention are that the entire system can adjust the illuminance by adjusting the manual diaphragm and replacing the attenuation sheet, measure and control the illuminance in combination with the micro-photometer, the axial slide rail supports the adjustment of the working distance to meet the matching relationship between the lens and the EBAPS SENSOR to be measured, and the longitudinal slide rail can realize the switching between the micro-photometer and the EBAPS to be measured; the entire test system is independent of the laboratory, and the overall dimensions are controlled within 20 inches, enabling single-person carrying to meet the need for quickly, conveniently, and real-time displaying the imaging properties of EBAPS devices at different locations. Description of the Drawings

[0012] The present invention will be further described below in conjunction with the drawings and embodiments.

[0013] Figure 1 is a schematic diagram of the present invention;

[0014] In the figure, 1. test box body, 2. aluminum honeycomb board, 3. standard A light source, 4. light-tight box, 5. axial slide rail, 6. longitudinal slide rail, 7. illuminometer tooling part, 8. micro-photometer probe, 9. EBAPS to be measured, 10. fixed-focus lens, 11. customized tooling part, 12. closed filter holder, 13. switch power supply tooling part, 14. switch power supply, 15. integrating sphere, 16. milky white glass, 17. manually adjustable diaphragm, 18. illuminometer display screen tooling part, 19. illuminometer display screen.

[0015] Figure 2 is the test flow chart of the portable EBAPS imaging test box of the present invention;

[0016] Figure 3 To test the illuminance range achievable by matching the test chamber with attenuation sheets of different grades, an illuminance coverage from 10 -5 lx to 10 lx was achieved. Detailed implementation manners

[0017] The following will disclose multiple implementation manners of the present invention with diagrams. For the sake of clear illustration, many practical details will be described together in the following narrative. However, it should be understood that these practical details are not used to limit the present invention. That is to say, in some implementation manners of the present invention, these practical details are unnecessary. In addition, for the purpose of simplifying the diagrams, some conventional structures and components will be shown in a simple schematic manner in the diagrams.

[0018] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture as shown in the accompanying drawings. If this specific posture changes, then the directional indications will also change accordingly.

[0019] To further understand the content, features and effects of the present invention, the following embodiments are exemplified, and

[0020] are described in detail in conjunction with the accompanying drawings as follows:

[0021]

Embodiment 1

[0022] The overall size of the test chamber is 20 inches. An integrating sphere 15 with an inner diameter of 150 mm is installed on the bottom plate 2. A standard A light source 3 of 12V 10W is installed at the light inlet of the integrating sphere 15. The standard A light source 3 is connected to a switching power supply 14 through a power cord. A manually adjustable diaphragm and a milky white glass are installed between the standard A light source and the light inlet of the integrating sphere through a pressing piece.

[0023] The holes of the aluminum honeycomb panel are M6 threaded holes with a hole pitch of 25 mm, and the surface is black. The test chamber is made of 9 mm wood board, with universal wheels at the bottom, a pull rod and a handle on the side.

[0024] After the light is homogenized by the integrating sphere, it is emitted from the light outlet. A closed filter holder is installed at the light outlet of the integrating sphere; a 1951 resolution target board of 50 mm × 50 mm and a filter of 50 mm × 50 mm are fixed in the filter holder through a retaining ring. The illuminance can be adjusted by adjusting the manually adjustable diaphragm and replacing the filter. The filter holder is connected to the dark box through a customized tooling part. There is a light passing port in the center, and there are setscrew holes around the light passing port for fixing with the closed filter holder, and four screw holes around for connecting with the dark box.

[0025] On the side where the dark box is connected to the closed filter holder, there is a light passing hole with a diameter of 46 mm and a wire passing hole with a diameter of 50 mm, which is used for communication between the micro illuminance meter display screen and the micro illuminance meter probe, as well as the power supply and communication of EBAPS. A conical rubber plug is installed in the wire passing hole for light shielding. There are four M8 screw holes at the four corners of the top of the dark box, and the dark box lid and the dark box are fixedly connected through the four screw holes.

[0026] Two axial slide rails are fixed to the bottom plate by M6 bolts. Above the axial slide rails, a longitudinal slide rail connects the two axial slide rails. The longitudinal slide rail has two independently sliding sliders, and the micro illuminance meter is fixed on the slider through a customized illuminance meter tooling part.

[0027] The illuminance meter display screen and the micro illuminance meter probe are connected through DB15, and the measured EBAPS and the computer are connected through a type-c data cable.

[0028] The illuminance meter display screen and the switching power supply of the standard A light source are fixed between the bottom plate through a designed pressure strip.

Claims

1. A portable EBAPS imaging test box, comprising a test box body (1), an aluminum honeycomb panel (2), an integrating sphere (15), and a dark box (4), characterized in that The aluminum honeycomb panel (2) is fixed on the test box body (1). The base of the integrating sphere (15) is provided with a through hole for fixing to the aluminum honeycomb panel (2). A light-tight box, a micro illuminance meter display screen (19), and the switching power supply (14) of the standard A light source (3) are also installed on the aluminum honeycomb panel (2) and fixed on the aluminum honeycomb panel (2) through self-designed pressure strips (18) and (13).

2. The portable EBAPS imaging test box according to claim 1, wherein, The standard A light source (3) is connected to the light inlet of the integrating sphere (15), and a manually adjustable diaphragm (17) is installed between them. There are two manually adjustable diaphragms. After the manually adjustable diaphragm (17) and before the light inlet, a milky white glass (16) is installed through a retaining ring, and a closed filter holder (12) is fixed at the light outlet of the integrating sphere (15).

3. The portable EBAPS imaging test box according to claim 2, characterized in that, A hole corresponding to the light outlet is opened on the light-tight box (4) for fixed connection with the closed filter holder, and a hole is opened on the light-tight box (4) for electrical and communication connections of the EBAPS (9) and the micro illuminance meter probe (8).

4. The portable EBAPS imaging test box according to claim 3, wherein Two axial slide rails (5) are fixed inside the light-tight box (4), and a longitudinal slide rail (6) is fixed on the axial slide rails (5). The longitudinal slide rail has two sliders that can slide independently.

5. The portable EBAPS imaging test box according to claim 4, characterized in that, The micro illuminance meter probe (8) is connected to the slider through a self-designed connecting piece (7). The connecting piece has three counterbores connected to the slider and two through holes connected to the micro illuminance probe (8).

6. The portable EBAPS imaging test box according to claim 5, wherein The lens (10) is fixed on the dovetail plate through a three-point fixing ring and thus connected to the slider. The lens (10) is connected to the measured EBAPS (9) through a standard camera C mount.

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