Electric variable-focus light source

Abstract

The utility model discloses an electric variable-focus light source which is characterized in that a lamp holder is mounted in the top of a fixed seat in a threaded manner, a high-power LED is mounted in the center of the interior of the lamp holder, a cylindrical telescopic lens module is mounted on the lower portion of the interior of the fixed seat, a motor is mounted on the side edge of the fixed seat, and the motor is connected with an external power source through a power line; a shell is installed below the side edge of the fixing base, a transmission gear is installed in the shell, an output shaft of the motor is connected with the transmission gear, the transmission gear drives the lens module to stretch out and draw back, a light source cable is installed on the side edge of the lamp holder, and power is supplied to the high-power LED through the light source cable. The light source is reasonable in design, the most ideal light spot effect can be debugged within the specific working distance, the light source can be adjusted in a variable mode, limitation of the working distance of the light source in the prior art is effectively solved, and the installation position of the light source does not need to be changed when other types of products are replaced.

Description

TECHNICAL FIELD

[0001] The utility model relates to automatic detection equipment field especially, and it is a kind of electric zoom point light source. BACKGROUND

[0002] Under the development trend of today's automatic industry, the development of machine vision field is rapid, and the efficiency and accuracy of automatic detection are improved;It can detect the scratch, impurity and bad point of transparent product;It has obvious effect, and can better distinguish bad products.The traditional point light source cannot adjust the spot size for the same working distance, so it cannot adapt to products of different sizes. INVENTION CONTENT

[0003] The utility model discloses a kind of electric zoom point light sources, to solve the problems raised in the above background technology.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A kind of electric zoom point light source, including fixed seat, lamp holder, high-power LED, lens module, motor, shell, transmission gear, light source cable, it is characterized by: the lamp holder is installed in the top inner thread of fixed seat, the high-power LED is installed in the inside center of lamp holder, the telescopic lens module of cylindrical shape is installed in the inside lower portion of fixed seat, the motor is installed in the side of fixed seat, and the motor is connected with external power supply by power cord, the shell is installed in the lower portion of the side of fixed seat, and transmission gear is installed in the shell, the motor output shaft is connected with transmission gear, and high-power LED is powered by light source cable, and the lens module is driven to extend and retract by transmission gear.

[0006] Preferably, the transmission gear further includes driving gear and gear ring, the motor output shaft is connected with driving gear, and the driving gear drives the gear ring meshed with it to rotate, the gear ring is installed on the outside of lens module, and the inside of gear ring and the outside of lens module are provided with matching threads, and the lens module is driven to extend and retract by the rotation of gear ring.

[0007] The beneficial effects of this utility model are as follows: This utility model is reasonably designed, adopts high-power LEDs, adjustable lens modules, and increases the electric adjustable lens spacing. In a specific sealed environment, the focal length can be controlled numerically, so that the most ideal light spot effect can be achieved at a specific working distance. It is adjustable and effectively solves the limitation of the working distance of this type of light source in the past. When replacing other types of products, there is no need to change the installation position of the light source. When inspecting the appearance, scratches, impurities, etc. of products, it can be used with a camera lens to clearly detect product defects, better avoid reflection on the surface of transparent products, and the clear image can accurately determine whether there are scratches on the product surface and whether there are impurities in the product. Attached Figure Description

[0008] Fig. 1 This is a schematic diagram of the structure of the electrically adjustable focal point light source of this utility model;

[0009] Fig. 2 This is a schematic diagram of the structure of the electrically adjustable focal point light source of this utility model.

[0010] In the diagram: 1. Mounting base, 2. Lamp holder, 3. High-power LED, 4. Lens module, 5. Motor, 6. Housing, 7. Transmission gear, 8. Light source cable. Detailed Implementation

[0011] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0012] like Figs. 1-2 As shown, an electrically adjustable focus light source includes a mounting base 1, a lamp holder 2, a high-power LED 3, a lens module 4, a motor 5, a housing 6, a transmission gear 7, and a light source cable 8. The lamp holder 2 is threaded onto the top of the mounting base 1, and the high-power LED 3 is installed in the center of the lamp holder 2. A cylindrical, retractable lens module 4 is installed at the lower part of the mounting base 1. The motor 5 is installed on the side of the mounting base 1 and is connected to an external power source via a power cord. The housing 6 is installed at the lower part of the side of the mounting base 1, and the transmission gear 7 is installed inside the housing 6. The output shaft of the motor 5 is connected to the transmission gear 7, and the transmission gear 7 drives the lens module 4 to extend and retract. The light source cable 8 is installed on the side of the lamp holder 2 and supplies power to the high-power LED 3 through the light source cable 8. The transmission gear 7 also includes a drive gear and a gear ring. The output shaft of the motor 5 is connected to the drive gear, and the drive gear drives the gear ring that meshes with it to rotate. The gear ring is installed around the outside of the lens module 4. The inside of the gear ring and the outside of the lens module 4 are provided with matching threads. The rotation of the gear ring drives the lens module 4 to spirally extend and retract.

[0013] The utility model discloses a use method: adopt high -power LED 3, change the divergence angle of light through lens module 4, make under the fixed working distance, utilize motor 5 to adjust the distance between the lens, change focal length, obtain high uniform, high brightness, the light spot of proper size, use this visual light source irradiation on the linear light spot of work surface that forms, use industrial camera and lens and take the light spot, use optical detection software and test the light spot uniformity.

[0014] It is obvious for those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point, the embodiments should be regarded as exemplary, and equivalent changes in the equivalent scope are included in the scope of the utility model.

Claims

1. A motorized zoomable light source, comprising a fixed base (1), a lamp holder (2), a high-power LED (3), a lens module (4), a motor (5), a housing (6), a transmission gear (7), a light source cable (8), characterized in that: The fixed seat (1) top inside screw installation lamp holder (2), the lamp holder (2) inside center installation high-power LED (3), the fixed seat (1) inside below installation cylindrical telescopic lens module (4), the fixed seat (1) side installation motor (5), and motor (5) through power cord and external power source is connected, the fixed seat (1) side below installation shell (6), and shell (6) inside installation transmission gear (7), motor (5) output shaft and transmission gear (7) are connected, and through transmission gear (7) drive lens module (4) telescopic, the lamp holder (2) side installation light source cable (8), and through light source cable (8) for high-power LED (3) power supply.

2. The electrically power zoomable point source of claim 1, wherein: The transmission gear (7) further comprises a driving gear and a gear ring, the output shaft of the motor (5) is connected with the driving gear, and the driving gear drives the gear ring meshed therewith to rotate, the gear ring is installed outside the lens module (4) for one turn, and the inside of the gear ring and the outside of the lens module (4) are provided with matching threads, and the gear ring is rotated to drive the lens module (4) to spiral telescopic.

Images