Luminous module as well as method for aligning and assembling thereof

Abstract

The invention discloses a luminescence module and its calibration and assembly method. The luminescence module comprises a shell seat unit, a luminescence unit which is fixed into the shell seat unit and a lens unit. An opening is formed on one side of the shell seat unit. The lens unit is placed on the shell seat corresponding to the luminescence unit and is exposed in the opening. Therefore, during the assembly, the lens unit passes the shell seat unit through the opening; during the calibration, the central position of the lens unit is coincided with the central position from the luminescence unit to the imaging position, then the optical alignment can be completed. The invention greatly improves the accuracy and convenience of the assembly.

Description

technical field [0001] The invention relates to a light-emitting module, in particular to a light-emitting module capable of projecting light and an alignment and assembly method thereof. Background technique [0002] General optical output devices such as printers, copiers, etc., mainly use a light-emitting module to project light onto a photosensitive drum, so that the photosensitive drum generates electric charge to absorb toner, and then transfers the absorbed toner to paper. The light sources used in the light emitting module include lasers and light emitting diode arrays (light emitting device arrays). Compared with the traditional laser output device, the LED array output device has the advantages of small size, fast printing speed and low cost. [0003] see figure 1 , figure 2 Take a light-emitting module 1 using a light-emitting diode array as a light source as an example, which includes a housing unit 11 , a light-emitting unit 12 and a lens unit 13 . The hous...

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Problems solved by technology

[0005] 1. The light-emitting module 1 can only be aligned in three dimensions manually at present, and the adjustment can reach up to six degrees of freedom (displacement and rotation of the X, Y, and Z axes). The assembly and alignment of each light-emitting module 1 It takes about 20 to 25 minutes to prepare, which is not only lengthy, time-consuming and inefficient, but not economical

[0006] 2. Since the lens unit 13 is aligned with six degrees of freedom, a complex six-axis control mechanism is required, and a control module that can drive the light-emitting unit 12 to light must be configured during the test, and the accuracy of the measurement platform must be The high requirements for stability and stability will greatly increase the cost of equipment, making the cost of the light-emitting module 1 remain high

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