CN111381380A

CN111381380A - Laser beam lamp

Info

Publication number: CN111381380A
Application number: CN201811642748.6A
Authority: CN
Inventors: 孙凯; 宗明; 范敏虎; 黄轲琴; 陈永茂
Original assignee: Second Branch Of Xi'an Mingdu Optoelectronics Technology Co ltd
Current assignee: Second Branch Of Xi'an Mingdu Optoelectronics Technology Co ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2020-07-07

Abstract

The invention provides a laser beam lamp, which comprises a hollow shell, and a beam expanding lens or a beam expanding lens group arranged at the front end in the hollow shell; the rear end of the hollow shell is provided with a connecting part connected with a light outlet of the laser. The laser beam is expanded to the diameter of 20-30mm, so that the laser beam has visual impact and better performance effect.

Description

Laser beam lamp

Technical Field

The invention belongs to the laser application technology, and particularly relates to a laser beam lamp.

Background

The traditional light beam lamp adopts a xenon lamp, a mercury lamp and the like as light sources, has short service life, is not an environment-friendly light source and is easy to explode; the beam collimation is poor, and the spot uniformity is poor; the light energy utilization rate is low, and the electricity is consumed; the color is single and can not be continuously changed; the semiconductor laser has high efficiency, small volume, light weight and low price, especially the efficiency of multiple quantum well type is 20-40%, the P-N type is up to-25%, and the energy efficiency is high. In addition, products whose continuous output wavelength covers the infrared to visible range and whose optical pulse output is on the order of 50W (bandwidth 100ns) have also been commercialized. Therefore, semiconductor lasers have attracted considerable attention for their application in the field of lighting.

Patent No. 201320262828.5 discloses a laser beam lamp that passes through a laser, a fiber head, a focusing lens group, an integrating rod, a relay lens group, a diaphragm, an aspherical mirror, and a concave mirror arranged in this order along an optical path, wherein the concave mirror is located spatially between the diaphragm and the aspherical mirror. The problem of traditional light beam lamp life-span short is solved, and the light beam collimation nature is good, and the colourity and the illuminance homogeneity of facula are good, and light energy utilization is low, and the colour of light beam can make colour coordinate, light intensity continuously variable through the ratio of control RGB, does not have the risk of exploding the lamp.

However, the diameter of the light beam projected by the laser beam lamp is about 3-6mm, and the effect is good when animation characters are projected. When a laser beam needs to be projected, the beam appears too thin and the visual impact is poor. And the optical system thereof is relatively complicated.

Disclosure of Invention

The invention aims to overcome the defects that the prior laser projection beam has small diameter and can not meet the illumination requirement of a stage lamp, and the invention aims to provide a laser beam lamp with convenient beam direction adjustment.

Therefore, the invention provides a laser beam lamp which comprises a beam expanding assembly, a beam expanding lens and a beam expanding lens group, wherein the beam expanding assembly comprises a hollow shell, and the beam expanding lens or the beam expanding lens group is arranged at the front end in the hollow shell;

the rear end of the hollow shell is provided with a connecting part connected with a light outlet of the laser.

The beam expanding lens group consists of a primary beam expanding lens and a secondary beam expanding lens which are sequentially arranged on the same optical axis;

an inner core is arranged in the hollow shell, and the primary beam expanding lens and the secondary beam expanding lens are sequentially arranged along the axial direction of the inner core;

the inner cavity of the inner core is provided with two parallel annular clamping grooves, and the primary beam expanding lens and the secondary beam expanding lens are respectively clamped in the annular clamping grooves through the outer edges of the primary beam expanding lens and the secondary beam expanding lens;

two opposite peripheral walls of the annular clamping groove are respectively provided with a round hole and a spiral spring of which the outer end is fixed on the peripheral walls;

the spiral spring is abutted against the peripheral wall of the inner cavity of the annular clamping groove by the primary beam expanding lens or the secondary beam expanding lens;

the hollow shell is provided with an adjusting screw which is in threaded connection with a screw hole fixed on the hollow shell;

the screw hole is right opposite to the round hole so as to ensure that the adjusting screw is abutted on the first-level beam expanding lens or the second-level beam expanding lens, and therefore the position of the first-level beam expanding lens or the second-level beam expanding lens is adjusted.

And the front end part of the hollow shell is provided with protective glass and is arranged outside the beam expanding lens or the beam expanding lens group.

Above-mentioned protective glass's part plates the pellicle, and this protective glass installs through a ball seat end cover on the hollow shell, the outside of this ball seat end cover sets up one and adjusts the handle to change protective glass's terminal surface orientation, and then realize local irradiant intensity and adjust.

The inner surface of the end part of the connecting part is a spherical surface, a joint bearing is arranged at the end part, and the end part of the joint bearing is connected with an optical fiber for leading in laser.

The invention has the beneficial effects that: this patent adopts the laser beam technique of expanding, enlarges laser beam to diameter 20-30mm, makes the laser beam more have visual impact force, and the performance is better, and illumination direction adjustment is convenient.

The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of the beam expanding assembly of a laser beam lamp.

Fig. 2 is a schematic diagram of a beam expanding assembly of a laser beam lamp.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

In the present invention, the upper, lower, left, and right in the drawings are regarded as the upper, lower, left, and right of the laser beam lamp described in this specification.

The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.

Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.

First embodiment

The embodiment provides a laser beam lamp, which comprises a beam expanding assembly shown in fig. 1, wherein the beam expanding assembly comprises a hollow shell 1, and a beam expanding lens or a beam expanding lens group 2 arranged at the front end in the hollow shell 1; the rear end of the hollow shell 1 is provided with a connecting part 3 connected with a light outlet of the laser.

This laser beam lamp realizes the beam expanding to incident laser with the help of the function of beam expanding lens or beam expanding lens group to change the facula diameter of its final outgoing, can enlarge laser beam to diameter 20 ~ 30mm, make the laser beam more have visual impact force, the performance effect is better.

Second embodiment

The related beam expanding lens group 2 is composed of a primary beam expanding lens 4 and a secondary beam expanding lens 5 shown in fig. 2, and the primary beam expanding lens 4 and the secondary beam expanding lens are sequentially arranged on the same optical axis; through the secondary beam expanding, laser beams with larger light spots can be further generated, and the requirements of occasions with larger light spots and stronger sensory stimulation, such as outdoor singing meetings, are met.

An inner core 6 shown in fig. 2 is arranged in the hollow shell 1, and the primary beam expanding lens 4 and the secondary beam expanding lens 5 are sequentially installed along the axial direction of the inner core 6; the inner cavity of the inner core 6 is provided with two parallel annular clamping grooves 7, and the primary beam expanding lens 4 and the secondary beam expanding lens 5 are respectively clamped in the annular clamping grooves 7 through the outer edges of the primary beam expanding lens and the secondary beam expanding lens; two opposite peripheral walls of the annular clamping groove 7 are respectively provided with a round hole 8 and a spiral spring 9 of which the outer end is fixed on the peripheral walls; the spiral spring 9 is propped against the peripheral wall of the inner cavity of the annular clamping groove 7 by the primary beam expanding lens 4 or the secondary beam expanding lens 5; an adjusting screw 10 is arranged on the hollow shell 1, and the adjusting screw 10 is in threaded connection with a screw hole fixed on the hollow shell 1; the screw is just right with round hole 8 to ensure that adjusting screw contradicts on one-level beam expanding lens 4 or second grade beam expanding lens 5, thereby realize the position control to one-level beam expanding lens 4 or second grade beam expanding lens 5. The specific adjusting process is as follows: through the adjusting screw that just revolves for adjusting screw touches and presses the inner core, thereby realizes accomplishing the adjustment to the position of optical axis to coil spring's compression, and when needs reverse adjustment optical axis, reverse rotation adjusting screw, coil spring applys the effort simultaneously and gives the inner core, accomplishes the adjustment of inner core position, and then realizes the adjustment to the optical axis. Therefore, under the condition that the mounting position of the laser beam lamp is not moved, the direction of emergent laser can be adjusted by effectively matching with the mounting support, the adjustment of local laser energy is realized, the workload is reduced, and the illumination adjusting efficiency is improved.

Third embodiment

The front end part of the hollow shell 1 is provided with a protective glass 11 and is arranged outside the beam expanding lens or the beam expanding lens group 2. In order to realize the adjustment of the laser intensity in a specific direction, the partial coating of the protective glass 11 provided by the embodiment is provided with a semipermeable membrane, the protective glass 11 is installed on the hollow shell 1 through a ball seat end cover 12, and an adjusting handle 13 is arranged outside the ball seat end cover 12, so that the end face orientation of the protective glass 11 is changed, and the intensity adjustment of the partial illumination is realized.

The inner surface of the end part of the connecting part 3 is spherical, the end part is provided with a joint bearing 14, the end part of the joint bearing 14 is connected with an optical fiber 15 for leading in laser, especially the synchronous rotation of the optical fiber can be ensured when the position or the direction of a laser beam lamp is adjusted, and the pulling and the damage to the optical fiber caused by the fixed position of the connecting part can be effectively protected.

The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the invention, which is intended to be covered by the claims and any design similar or equivalent to the scope of the invention. The components and structures of the present embodiments that are not described in detail are well known in the art and do not constitute essential structural elements or elements.

Claims

1. A laser beam lamp comprising a beam expanding assembly, characterized in that: the beam expanding assembly comprises a hollow shell (1) and a beam expanding lens or a beam expanding lens group (2) arranged at the front end in the hollow shell (1);

the rear end of the hollow shell (1) is provided with a connecting part (3) connected with a light outlet of the laser.

2. The laser beam lamp of claim 1, wherein: the beam expanding lens group (2) is composed of a primary beam expanding lens (4) and a secondary beam expanding lens (5), and the primary beam expanding lens and the secondary beam expanding lens are sequentially arranged on the same optical axis;

an inner core (6) is arranged in the hollow shell (1), and the primary beam expanding lens (4) and the secondary beam expanding lens (5) are sequentially installed along the axial direction of the inner core (6);

the inner cavity of the inner core (6) is provided with two parallel annular clamping grooves (7), and the primary beam expanding lens (4) and the secondary beam expanding lens (5) are respectively clamped in the annular clamping grooves (7) through the outer edges of the primary beam expanding lens and the secondary beam expanding lens;

two opposite peripheral walls of the annular clamping groove (7) are respectively provided with a round hole (8) and a spiral spring (9) with the outer end fixed on the peripheral walls;

the spiral spring (9) is abutted against the peripheral wall of the inner cavity of the annular clamping groove (7) by the primary beam expanding lens (4) or the secondary beam expanding lens (5);

an adjusting screw (10) is arranged on the hollow shell (1), and the adjusting screw (10) is in threaded connection with a screw hole fixed on the hollow shell (1);

the screw with round hole (8) just right to ensure that adjusting screw contradicts on one-level beam expanding lens (4) or second grade beam expanding lens (5), thereby the realization is right the position control of one-level beam expanding lens (4) or second grade beam expanding lens (5).

3. The laser beam lamp of claim 2, wherein: and the front end part of the hollow shell (1) is provided with protective glass (11) and is arranged on the outer side of the beam expanding lens or the beam expanding lens group (2).

4. A laser beam lamp as claimed in claim 3, wherein: the pellicle is plated in the part of protection glass (11), and this protection glass (11) are installed through a ball seat end cover (12) on hollow shell (1), the outside of this ball seat end cover (12) sets up one and adjusts handle (13) to change the terminal surface orientation of protection glass (11), and then realize local irradiant intensity and adjust.

5. The laser beam lamp of claim 4, wherein: the inner surface of the end part of the connecting part (3) is spherical, a joint bearing (14) is arranged at the end part, and an optical fiber (15) is connected to the end part of the joint bearing (14) and used for guiding laser.