CN-224224545-U - Optical module and photocuring 3D printer

Abstract

The application provides an optical module and a photocuring 3D printer, and belongs to the technical field of printing equipment. The light emitting device includes an optical module, a light emitting panel on which a plurality of light emitting modules are mounted, each light emitting module being configured to be selectively turned on or off, a collimating lens array including a plurality of collimating modules, and a light shielding member disposed between the light emitting panel and the collimating lens array and having a plurality of channels, wherein a single channel is aligned with a single light emitting module and a single collimating module. According to the optical module provided by the application, the shading element is arranged between the light-emitting plate and the collimating lens array, the collimating lens array is supported by the shading element, and the single channel is aligned with the single light-emitting assembly and the single collimating assembly to prevent crosstalk between the light-emitting assemblies, so that the printing quality is improved.

Inventors

• LUO MING
• ZHANG YUZHE
• CHENG FACHAO
• CHEN JIANLIN

Assignees

• 广州黑格智造信息科技有限公司

Dates

Publication Date

20260512

Application Date

20250430

Claims (10)

1. 1. An optical module, comprising: A light emitting panel on which a plurality of light emitting modules are mounted, each light emitting module being configured to be selectively turned on or off; a collimating lens array comprising a plurality of collimating components; A light shielding element disposed between the light emitting panel and the collimating lens array and having a plurality of channels, wherein a single channel is aligned with a single light emitting assembly and a single collimating assembly.
2. 2. The optical module of claim 1, wherein the cross-section of the channel is any one of triangular, rectangular, regular hexagonal, regular octagonal, or regular decagonal.
3. 3. The optical module of claim 1, further comprising a fly-eye lens array disposed on a side of the collimating lens array remote from the light shielding element.
4. 4. The optical module of claim 1, further comprising a heat sink mounted to a side of the light emitting panel remote from the collimating lens array.
5. 5. The optical module of claim 1, wherein each light emitting assembly comprises: individual LEDs, or And the wave bands of the light rays emitted by the LEDs are the same.
6. 6. The optical module of claim 1, wherein each light emitting assembly comprises at least one first LED for emitting light in a first wavelength band and at least one second LED for emitting light in a second wavelength band, the first wavelength band being different from the second wavelength band.
7. 7. The optical module of claim 1, wherein a plurality of the light emitting elements are arranged in an array, staggered, or embedded arrangement.
8. 8. A photo-curing 3D printer is characterized by comprising: A tray carrying printing material; The optical module according to any one of claims 1-7, wherein a light outlet of the optical module is disposed corresponding to the tray to cure the printing material.
9. 9. The light-curable 3D printer of claim 8 further comprising an LCD screen disposed between the tray and the optical module.
10. 10. The light-curable 3D printer according to claim 9, wherein the light rays emitted by the two adjacent light-emitting components are configured to be collimated and spread to form two light spots which are partially overlapped on the LCD screen, wherein the diameter of each light spot or the length along the arrangement direction of the two adjacent light-emitting components is D, and the distance between the central axes of the two adjacent light-emitting components is D; wherein d=2×d×n, n is an integer.

Description

Optical module and photocuring 3D printer Technical Field The application belongs to the technical field of printing equipment, and particularly relates to an optical module and a photo-curing 3D printer. Background A 3D printer with LED lamps and a Digital Micromirror Device (DMD) activates all the LED lamps when in use and adjusts the angle of the mirror of the digital micromirror device to achieve light intensity adjustment in the target area. The 3D printer with the LED lamps and the LCD screen starts all the LED lamps when in use, and mask adjustment is realized through the LCD screen. The above-described technique turns on all the LED lamps at start-up, which is disadvantageous for energy saving. Further, in actual use of the LCD screen, even if adjusted so as not to allow light to pass through in a predetermined area, it is limited by, for example, the influence of the LCD material, and part of the light irradiates the predetermined area with weaker light intensity, which may undesirably cure the resin of the predetermined area. The two aforementioned printers expose one pattern at a time to achieve the face exposure. This also presents challenges for the uniformity of the intensity of the projected light over a predetermined area. Disclosure of utility model The embodiment of the application aims to provide an optical module and a photocuring 3D printer, which are used for solving the technical problem of uneven light intensity of projected light in the photocuring 3D printer in the prior art. In order to achieve the above purpose, the present application adopts the technical scheme that an optical module is provided, which comprises: A light emitting panel on which a plurality of light emitting modules are mounted, each light emitting module being configured to be selectively turned on or off; a collimating lens array comprising a plurality of collimating components; A light shielding element disposed between the light emitting panel and the collimating lens array and having a plurality of channels, wherein a single channel is aligned with a single light emitting assembly and a single collimating assembly. Optionally, the cross section of the channel is any one of triangle, rectangle, regular hexagon, regular octagon or regular decagon. Optionally, the optical module further includes a fly eye lens array, and the fly eye lens array is disposed on a side of the collimating lens array away from the light shielding element. Optionally, the light emitting device further comprises a heat dissipation device, wherein the heat dissipation device is arranged on one side, away from the collimating lens array, of the light emitting plate. Optionally, each light emitting assembly comprises: individual LEDs, or And the wave bands of the light rays emitted by the LEDs are the same. Optionally, each light emitting assembly includes at least one first LED for emitting light of a first wavelength band and at least one second LED for emitting light of a second wavelength band, the first wavelength band being different from the second wavelength band. Optionally, a plurality of the light emitting components are arranged in an array, staggered, or embedded arrangement. The application also provides a photo-curing 3D printer, comprising: A tray carrying printing material; The optical module is characterized in that the light outlet of the optical module is arranged corresponding to the tray so as to solidify the printing material. Optionally, an LCD screen is further included, the LCD screen being arranged between the tray and the optical module. Optionally, the light emitted by two adjacent light emitting components is configured to be collimated and diffused to form two light spots partially overlapped on the LCD screen, wherein the diameter of each light spot or the length along the arrangement direction of the two adjacent light emitting components is D, and the distance between the central axes of the two adjacent light emitting components is D; Wherein d=2×d×n, n is an integer. Compared with the prior art, the optical module has the advantages that the grating is arranged between the light-emitting plate and the collimating lens array, the collimating lens array is supported by the grating, crosstalk among the light-emitting assemblies is prevented by virtue of the channels which are arranged in one-to-one correspondence with the light-emitting assemblies, the boundary of the light source is more clear, the area of the light spot overlapping area passing through the collimating assemblies is controllable, and the printing quality is improved. Drawings In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings ma