A dual-light-source lighting device

Abstract

The present invention discloses a dual-light source lighting device, comprising an illumination objective lens, an iodine-tungsten lamp assembly, a collimating lens group, an LED diode assembly, and a housing. The housing houses an infrared lighting system and a visible light lighting system. The infrared lighting system comprises an illumination objective lens, an illumination reflector, and an iodine-tungsten lamp, while the visible light lighting system comprises an illumination objective lens, a diode collimator, and an LED diode. The illumination reflector has a central circular hole, and the diode collimator is embedded in the central circular hole of the illumination reflector. Both the iodine-tungsten lamp and the LED diode are mounted on the optical axis of the illumination system. The present invention utilizes a dual-light source lighting device that can simultaneously accommodate both the visible light band and the long-wave infrared band, covering the vast majority of optical instrument lighting needs.

Description

Technical Field

[0001] The present invention belongs to the technical field of lighting, and in particular relates to a dual-light source lighting device. Background Art

[0002] The illumination system is a crucial component of optical instruments. Many optical instruments require a light source to operate. These instruments typically illuminate the object using a light source, which then forms an image through the system. To maximize light source utilization and fully utilize the imaging optical system, an additional illumination system is required between the light source and the illuminated object. Currently, the commonly used illumination optical path often utilizes a single aspheric condenser. This problem is that in broadband illumination, the focal length deviation between the visible light band and the long-wave infrared band is significant, making it difficult to achieve a balanced balance, resulting in a decrease in overall illumination quality. Summary of the Invention

[0003] In order to overcome the shortcomings of existing lighting systems, the purpose of the present invention is to provide a dual-light source lighting device that can simultaneously take into account the visible light band and the long-wave infrared band, and even a certain monochromatic band, greatly improving the utilization rate of light energy and the uniformity of irradiation, and providing a better lighting environment for the illuminated object plane.

[0004] In order to achieve the above-mentioned object, the technical solution adopted by the present invention is: a dual-light source lighting device, including an illumination objective lens, an iodine tungsten lamp assembly, a collimating lens group, an LED diode assembly and a housing, wherein two lighting systems are installed inside the housing, and the two lighting systems are an infrared lighting system and a visible light lighting system respectively; wherein the infrared lighting system includes an illumination objective lens, an illumination reflector and an iodine tungsten lamp, and the visible light lighting system includes an illumination objective lens, a diode collimator and an LED diode; a circular hole is opened at the center of the illumination reflector, and the diode collimator is embedded in the circular hole at the center of the illumination reflector, and the diode collimator is aligned with the plane of the illumination reflector, and the iodine tungsten lamp and the LED diode are both installed on the optical axis of the illumination system.

[0005] Furthermore, the lighting objective lens is a meniscus lens, the substrate material is ZNS, and the front and rear surfaces of the lighting objective lens are plated with antireflection films that can improve the transmittance in the 400nm-700nm and 8μm-12μm bands.

[0006] Furthermore, the lighting reflector is a plano-concave lens, the base material of which is K9, and the concave surface of the lighting reflector is plated with a reflective film that can improve the reflectivity in the 400nm-12μm band.

[0007] Furthermore, the diode collimator is a plano-convex lens, the base material of which is K9, and the front and rear surfaces of the diode collimator are both plated with an antireflection film that can improve the transmittance in the 400nm to 700nm band.

[0008] Furthermore, the lighting objective lens is installed on one end of the shell through a pressure ring, and an LED diode assembly is fixed to the other end of the shell by screws. The collimating lens group is located on one side of the LED diode assembly, and the collimating lens group is pressed and fixed inside the shell by the LED diode assembly; the iodine tungsten lamp assembly is installed on the side of the shell and is located between the lighting objective lens and the collimating lens group.

[0009] Furthermore, the collimating lens group includes an illumination reflector and a diode collimating lens.

[0010] Furthermore, the iodine tungsten lamp assembly includes an iodine tungsten lamp, a second lamp holder, a second power connector and a mounting base. The mounting base is installed on the side of the outer shell by screws, and a side groove is opened on the inner wall of the mounting base. The second lamp holder is installed in the side groove of the mounting base. The second lamp holder and the mounting base form a sliding connection. The second power connector is installed in the middle of the second lamp holder, and the iodine tungsten lamp is installed on the electrode of the second power connector.

[0011] Furthermore, the LED diode assembly includes an LED diode, a power connector and a lamp holder. The lamp holder is fixed to the end of the shell by screws, and the end of the lamp holder presses and fixes the collimating lens group inside the shell; a power connector is installed in the middle of the lamp holder, and the LED diode is installed on the positive and negative poles of the power connector.

[0012] Furthermore, a heat dissipation hole is opened on the outer wall of the shell, and the position of the heat dissipation hole corresponds to the position of the iodine tungsten lamp assembly.

[0013] Furthermore, a heat dissipation groove is formed on the outer wall of the shell, and the position of the heat dissipation groove corresponds to the position of the LED diode assembly.

[0014] Compared with the prior art, the beneficial effects of the present invention are embodied in the following aspects:

[0015] (1) The dual-light source lighting device can take into account both the visible light band and the long-wave infrared band, covering the lighting needs of most optical instruments.

[0016] (2) Greatly improve the light energy utilization rate and light beam uniformity, and significantly enhance the lighting effect.

[0017] (3) The overall structure is simple, the devices are highly integrated, and they are easy to install and adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the internal structure of the dual-light source lighting device of the present invention;

[0019] Figure 2 Schematic diagram of the optical system of the dual-light source lighting device of the present invention;

[0020] Figure 3 This is a schematic diagram of the composition of the lighting source components of the dual-light source lighting device of the present invention;

[0021] Figure 4 This is an outline diagram of the housing of the dual-light source lighting device of the present invention;

[0022] In the figure: 1. Illumination objective lens, 2. Collimating lens group, 3. Illumination reflector, 4. Diode collimator, 5. LED diode, 6. Iodine tungsten lamp, 7. Iodine tungsten lamp assembly, 8. LED diode assembly, 9. Power connector 1, 10. Lamp holder 1, 11. Mounting base, 12. Power connector 2, 13. Lamp holder 2, 14. Housing, 15. Heat dissipation hole, 16. Heat dissipation groove. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0024] like Figure 1-4 As shown, a dual-light source lighting device of this embodiment includes a lighting objective lens 1, an iodine tungsten lamp assembly 7, a collimating lens group 2, an LED diode assembly 8 and a housing 14.

[0025] A dual-light source lighting device of the present invention has two lighting systems installed in its housing 14, namely, an infrared lighting system and a visible light lighting system. The lighting system, consisting of an illumination objective lens 1, an illumination reflector 3, and an iodine-tungsten lamp 6, provides an infrared lighting environment for an illuminated object plane. The infrared light emitted by the iodine-tungsten lamp 6 is reflected by the concave surface of the illumination reflector 3, passes through the illumination objective lens 1 to form a uniform light beam, and illuminates the object plane. The lighting system, consisting of the illumination objective lens 1, a diode collimator 4, and an LED diode 5, provides a visible light lighting environment for the illuminated object plane. The light emitted by the LED diode 5 passes through the diode collimator 4 and the illumination objective lens 1 in sequence, and then evenly illuminates the object plane.

[0026] The lighting objective lens 1 is mounted on one end of the housing 14 and fastened by a pressure ring. The lighting objective lens 1 is in the shape of a meniscus lens, the base material is ZNS, the optical focal length is 0.02026, the surface curvature radii are 45 and 122.14 respectively, and the front and back surfaces are coated with an antireflection film, which can make the average transmittance in the 400nm to 700nm band ≥95%, and the average transmittance in the 8μm to 12μm band ≥85%.

[0027] The collimating lens group 2 includes an illumination reflector 3 and a diode collimator 4. A circular hole with a diameter of φ10 is opened in the center of the illumination reflector 3, and the outer diameter of the diode collimator 4 is φ10. The diode collimator 4 is embedded in the circular hole in the center of the illumination reflector 3, and the diode collimator 4 is aligned with the plane of the illumination reflector 3.

[0028] The lighting reflector 3 is a plano-concave lens, the base material is K9, the concave curvature radius is -50, and the concave surface of the lighting reflector 3 is coated with a reflective film, which can make the average reflectivity in the 400nm~14μm band ≥90%.

[0029] The diode collimator 4 is a plano-convex lens with a base material of K9, an optical focal length of 0.06935, and a convex curvature radius of 7.5. The front and back surfaces of the diode collimator 4 are both coated with an antireflection film, which can make the average transmittance in the 400nm to 700nm band ≥99%.

[0030] The iodine tungsten lamp assembly 7 is mounted on the side of the housing 14 and is located between the illumination objective lens 1 and the collimating lens group 2. The iodine tungsten lamp assembly 7 includes an iodine tungsten lamp 6, a second lamp holder 13, a second power connector 12, and a mounting base 11. The mounting base 11 is screwed to the side of the housing 14, and a side groove is defined on the inner wall of the mounting base 11. The second lamp holder 13 is mounted in the side groove of the mounting base 11, forming a sliding connection between the second lamp holder 13 and the mounting base 11. The second power connector 12 is threadedly mounted in the middle of the second lamp holder 13. The iodine tungsten lamp 6 is mounted on the electrode of the second power connector 12. The position of the iodine tungsten lamp 6 can be adjusted up and down using the side groove of the mounting base 11.

[0031] The LED diode assembly 8 is installed on one side of the collimating lens group 2. The LED diode assembly 8 includes an LED diode 5, a power connector 9 and a lamp holder 10. The lamp holder 10 is fixed to the end of the housing 14 by screws, and the end of the lamp holder 10 presses and fixes the collimating lens group 2 inside the housing 14; the middle part of the lamp holder 10 is threadedly mounted with a power connector 9, and the LED diode 5 is mounted on the positive and negative poles of the power connector 9.

[0032] The iodine tungsten lamp 6 and the LED diode 5 of this embodiment are both installed on the optical axis of the lighting system and can be replaced by other light sources.

[0033] The outer wall of the housing 14 of this embodiment is provided with heat dissipation holes 15 , and the positions of the heat dissipation holes 15 correspond to the positions of the iodine tungsten lamp assembly 7 . The heat dissipation holes 15 can dissipate heat well to avoid damage to the device due to excessive internal temperature.

[0034] In this embodiment, a heat dissipation groove 16 is formed on the outer wall of the housing 14. The position of the heat dissipation groove 16 corresponds to the position of the LED diode assembly 8. The heat dissipation groove 16 can dissipate heat well to avoid damage to the device due to excessive internal temperature.

[0035] The above description is only a description of the preferred embodiment of the present invention and does not limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solution of the present invention by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A dual-light source lighting device, characterized in that: The invention comprises an illumination objective lens (1), an iodine tungsten lamp assembly (7), a collimating lens group (2), an LED diode assembly (8) and a housing (14), wherein two illumination systems are installed inside the housing (14), and the two illumination systems are an infrared illumination system and a visible light illumination system respectively; wherein the infrared illumination system comprises an illumination objective lens (1), an illumination reflector (3) and an iodine tungsten lamp (6), and the visible light illumination system comprises an illumination objective lens (1), a diode collimating lens (4) and an LED diode (5); a circular hole is provided at the center of the illumination reflector (3), the diode collimating lens (4) is embedded in the circular hole at the center of the illumination reflector (3), and the planes of the diode collimating lens (4) and the illumination reflector (3) are aligned, and the iodine tungsten lamp (6) and the LED diode (5) are both installed on the optical axis of the illumination system; The iodine tungsten lamp assembly (7) includes an iodine tungsten lamp (6), a second lamp holder (13), a second power connector (12) and a mounting base (11), wherein the mounting base (11) is mounted on the side of the housing (14) by screws, and a side groove is provided on the inner wall of the mounting base (11), the second lamp holder (13) is mounted in the side groove of the mounting base (11), and the second lamp holder (13) and the mounting base (11) are slidably connected, and a second power connector (12) is installed in the middle of the second lamp holder (13), and the iodine tungsten lamp (6) is mounted on the electrode of the second power connector (12).

2. The dual-light source lighting device according to claim 1, wherein: The lighting objective lens (1) is a meniscus lens, the base material of which is ZNS, and the front and rear surfaces of the lighting objective lens (1) are both coated with anti-reflection films.

3. The dual-light source lighting device according to claim 2, wherein: The lighting reflector (3) is a plano-concave lens, the base material of which is K9, and the concave surface of the lighting reflector (3) is plated with a reflective film.

4. The dual-light source lighting device according to claim 3, wherein: The diode collimator (4) is a plano-convex lens, the base material of which is K9, and the front and rear surfaces of the diode collimator (4) are both plated with an anti-reflection film capable of improving the transmittance in the 400nm to 700nm band.

5. The dual-light source lighting device according to claim 1, wherein: The lighting objective lens (1) is mounted on one end of the housing (14) via a pressure ring, and an LED diode assembly (8) is fixed to the other end of the housing (14) via screws. The collimating lens group (2) is located on one side of the LED diode assembly (8), and the collimating lens group (2) is pressed and fixed inside the housing (14) via the LED diode assembly (8); the iodine tungsten lamp assembly (7) is mounted on the side of the housing (14) and is located between the lighting objective lens (1) and the collimating lens group (2).

6. The dual-light source lighting device according to claim 1, wherein: The collimating lens group (2) comprises an illumination reflector (3) and a diode collimating lens (4).

7. The dual-light source lighting device according to claim 5, wherein: The LED diode assembly (8) comprises an LED diode (5), a power connector (9) and a lamp holder (10), wherein the lamp holder (10) is fixed to the end of the housing (14) by screws, and the end of the lamp holder (10) presses and fixes the collimating lens group (2) inside the housing (14); a power connector (9) is installed in the middle of the lamp holder (10), and the LED diode (5) is installed on the positive and negative poles of the power connector (9).

8. The dual-light source lighting device according to claim 1, wherein: A heat dissipation hole (15) is provided on the outer wall of the housing (14), and the position of the heat dissipation hole (15) corresponds to the position of the iodine tungsten lamp assembly (7).

9. The dual-light source lighting device according to claim 1, wherein: A heat dissipation groove (16) is provided on the outer wall of the housing (14), and the position of the heat dissipation groove (16) corresponds to the position of the LED diode assembly (8).

Images