CN217034957U

CN217034957U - Novel laser pen with continuously adjustable brightness

Info

Publication number: CN217034957U
Application number: CN202220145628.0U
Authority: CN
Inventors: 王立勇; 赵吟雪
Original assignee: Wuhan University of Science and Engineering WUSE
Current assignee: Wuhan University of Science and Engineering WUSE
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-07-22
Anticipated expiration: 2032-01-19

Abstract

The utility model discloses a novel laser pen with continuously adjustable brightness, which comprises a first shell, a second shell and a third shell, wherein the first shell, the second shell and the third shell are sequentially connected, an emergent window is fixed at the tail end of the third shell, the first shell is connected with the second shell through a first pressing ring, and the third shell is connected with the second shell through a second pressing ring; a battery, a circuit board and a laser emitting head are arranged in the first shell, a switch button connected with the circuit board is arranged outside the first shell, and the laser emitting head is positioned on a non-central shaft of the laser pen; and a transmission rate continuously variable reflective neutral optical filter is arranged in the second shell, and a first reflector and a second reflector are oppositely arranged in parallel in the third shell. The laser pen disclosed by the utility model can realize continuous adjustment of the brightness of the laser pen, is convenient to operate and low in cost, and can meet various application requirements.

Description

Novel laser pen with continuously adjustable brightness

Technical Field

The utility model relates to a laser pen, in particular to a novel laser pen with continuously adjustable brightness.

Background

As a common tool, the laser pen has very wide and important application value in the aspects of teaching, various lectures, optical experiments, engineering application and the like.

The traditional laser pen has fixed brightness, and once the traditional laser pen is manufactured, the brightness of the traditional laser pen cannot be freely adjusted, so that the requirements of diversified application occasions and the personalized selection requirements of special crowds cannot be obviously met. For example, in rainy or other dark places, the entry of intense reflected light into the eyes is prone to visual fatigue and can cause some damage to the eyes of a person if used for a long period of time. In contrast, in a well-lighted environment, the scattering effect of the background light is too strong, so that a brighter laser brightness is often needed to make the laser easier to identify and see.

Therefore, the continuous adjustment of the brightness of the laser pen can meet the individual requirements of specific users in different occasions, and has urgent practical significance and wide application prospect.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides a novel laser pen with continuously adjustable brightness, so as to achieve the purposes of continuously adjusting the brightness of the laser pen and meeting the application requirements of different occasions.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

a novel laser pen with continuously adjustable brightness comprises a first shell, a second shell and a third shell which are sequentially connected, wherein an exit window is fixed at the tail end of the third shell, the first shell is connected with the second shell through a first pressing ring, and the third shell is connected with the second shell through a second pressing ring; a battery, a circuit board and a laser emitting head are arranged in the first shell, a switch button connected with the circuit board is arranged outside the first shell, and the laser emitting head is positioned on a non-central shaft of the laser pen; and a transmission rate continuously variable reflective neutral optical filter is arranged in the second shell, and a first reflector and a second reflector are oppositely arranged in parallel in the third shell.

In the above scheme, the optical filter is mounted inside the second shell through the fixing ring.

In the above scheme, the first reflector is mounted inside the third shell through the first fixing seat.

In the above scheme, the second reflector is mounted inside the third shell through the second fixing seat.

In the above scheme, the included angles between the first reflecting mirror and the second reflecting mirror and the central axis of the laser pen are both 45 degrees.

In the above scheme, the center of the second reflecting mirror is located on the central shaft of the laser pen.

Through the technical scheme, the novel laser pen with continuously adjustable brightness has the following beneficial effects:

1. the utility model realizes the continuous adjustment function of the laser brightness by utilizing the reflective neutral filter with continuously variable transmittance, and the laser intensity can be continuously changed between the maximum value and the minimum value.

2. Based on the pressing ring fixing method, the independent rotation of the first shell, the second shell and the third shell is realized, and the possibility is provided for various adjusting modes.

3. Based on the first reflecting mirror and the second reflecting mirror, the adjustment of the laser propagation direction is realized, and finally, the laser beam is emitted along the central shaft direction of the laser pen.

In conclusion, the utility model can realize the continuous adjustment of the brightness of the laser pen, and has the outstanding advantages of meeting various use requirements, being convenient to operate, having low cost and the like, thereby meeting various application requirements.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is a schematic diagram of a novel laser pen with continuously adjustable brightness according to an embodiment of the present invention;

fig. 2 is a schematic diagram of adjusting the laser brightness based on a reflective neutral density filter of a transmittance continuous variation type.

In the figure, 1, a first shell; 2. a second shell; 3. a third shell; 4. an exit window; 5. pressing a ring I; 6. pressing a ring II; 7. a battery; 8. a circuit board; 9. a switch button; 10. a laser emitting head; 11. a fixed ring; 12. an optical filter; 13. a first reflecting mirror; 14. a second reflecting mirror; 15. a first fixed seat; 16. a second fixed seat; 17. a laser beam.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The utility model provides a novel laser pen with continuously adjustable brightness, which comprises a first shell 1, a second shell 2 and a third shell 3 which are sequentially connected, wherein an exit window 4 is fixed at the tail end of the third shell 3.

Connect through clamping ring one 5 between shell one 1 and the shell two 2, connect through clamping ring two 6 between shell three 3 and the shell two 2, specifically do: the right side of the first shell 1 and the left side of the third shell 3 are of a hollow cylinder structure. The left side and the right side of the second shell 2 are hollow cylindrical external thread structures which can just penetrate through the hollow cylindrical ring structures on the right side of the first shell 1 and the left side of the third shell 3, so that the three parts are combined together. The first pressing ring 5 and the second pressing ring 6 are hollow cylindrical metal rings with internal thread structures, and are matched with the hollow cylindrical external thread structures on the left side and the right side of the second shell 2. After the first shell 1, the second shell 2 and the third shell 3 are combined together, the first shell 1, the second shell 2 and the third shell 3 are fixed and connected by the first pressing ring 5 and the second pressing ring 6. The second rotary shell 2 can drive the internal components to rotate along the central axis of the laser pen, but the first shell 1 and the third shell 3 do not rotate along with the second shell 2.

A battery 7, a circuit board 8 and a laser emitting head 10 are arranged in the first shell 1 and are used as a laser generating device, and the laser emitting head 10 is located on a non-central shaft of the laser pen. A switch button 9 connected with a circuit board 8 is arranged outside the first shell 1; the battery 7 acts on the laser emitting head 10 through the circuit board 8, and the switch button 9 controls whether the circuit board 8 works or not, so that the switch operation of the laser pen can be controlled.

A reflection neutral optical filter 12 (hereinafter referred to as an optical filter 12) with a continuously variable transmittance is arranged in the second housing 2, and the optical filter 12 is installed inside the second housing 2 through a fixing ring 11, specifically: the fixing ring 11 can be fixed on the inner wall of the housing 2 by gluing or other methods. The optical filter 12 can be embedded into the inner ring of the fixing ring 11, and the center O of the optical filter 12 is located on the central axis of the laser pen. The filter 12 has a circular structure, and the transmittance continuously changes in the direction of the arc. The specific manufacturing principle is that the transmittance value of light continuously changes from 100% to 0 along the clockwise direction (the direction indicated by the dotted arrow in fig. 2) according to the different thicknesses of the plated reflecting films. When the second shell 2 is rotated, the optical filter 12 can be driven to rotate, and the optical filter 12 is rotated along the central shaft due to the unchanged position of the laser beam 17, so that the continuous free adjustment of the finally emergent laser brightness (light intensity) from the maximum value to the minimum value of 0 can be realized.

The first reflector 13 and the second reflector 14 are oppositely arranged in parallel in the third shell 3, the first reflector 13 is mounted inside the third shell 3 through the first fixing seat 15, and the second reflector 14 is mounted inside the third shell 3 through the second fixing seat 16. The adjustment of the laser propagation direction is realized by two mirrors. In this embodiment, the contained angle of reflector one 13 and reflector two 14 and laser pen axis is 45, and the center of reflector two 14 is located the center pin of laser pen, can guarantee that laser passes through the reflection back of reflector one 13 and reflector two 14, along the central axis outgoing of laser pen.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A novel laser pen with continuously adjustable brightness is characterized by comprising a first shell, a second shell and a third shell which are sequentially connected, wherein an emergent window is fixed at the tail end of the third shell, the first shell is connected with the second shell through a first pressing ring, and the third shell is connected with the second shell through a second pressing ring; a battery, a circuit board and a laser emitting head are arranged in the first shell, a switch button connected with the circuit board is arranged outside the first shell, and the laser emitting head is positioned on a non-central shaft of the laser pen; and a transmission rate continuously variable reflective neutral optical filter is arranged in the second shell, and a first reflector and a second reflector are oppositely arranged in parallel in the third shell.

2. The laser pointer as claimed in claim 1, wherein the filter is mounted inside the second housing through a fixing ring.

3. The laser pointer with continuously adjustable brightness as claimed in claim 1, wherein the first reflecting mirror is installed inside the third housing through the first fixing seat.

4. The laser pen as claimed in claim 1, wherein the reflector two is mounted inside the housing three through a second fixing base.

5. The novel laser pen with continuously adjustable brightness as claimed in claim 1, wherein the included angles between the first reflector and the second reflector and the central axis of the laser pen are both 45 °.

6. The novel laser pen with continuously adjustable brightness as claimed in claim 1, wherein the center of the second reflecting mirror is located on the central axis of the laser pen.