CN103123436B

CN103123436B - Optical device with dustproof structure

Info

Publication number: CN103123436B
Application number: CN201310053484.1A
Authority: CN
Inventors: 温政昱; 魏宏任
Original assignee: Qisda Optronics Suzhou Co Ltd; Qisda Corp
Current assignee: Shenzhen City Xu Geng Photoelectric Technology Co Ltd
Priority date: 2013-02-20
Filing date: 2013-02-20
Publication date: 2015-03-25
Anticipated expiration: 2033-02-20
Also published as: CN103123436A

Abstract

The invention discloses an optical device with a dustproof structure. The optical device with the dustproof structure comprises a casing and an optical lens, the casing is provided with an opening, the opening is provided with inner walls, the inner walls are provided with first spiral threads, the optical lens is arranged at the opening and provided with an outer surface, second spiral threads are arranged on the outer surface, when the first spiral threads are convex, the second spiral threads are concave, or when the first spiral threads are concave, the second spiral threads are convex, and the concave spiral threads and the convex spiral threads are correspondingly arranged.

Description

There are the optical devices of dustproof construction

Technical field

The present invention relates to a kind of optical devices, particularly relate to the optical devices that a kind of combination with camera lens and housing reaches dust reduction capability.

Background technology

Optical devices collocation optical lens is as projector, camera or telescope are common optical devices mechanism, amplify or focusing because needing multiplying power during optical imagery, optical lens needs to be arranged on the housing of optical devices in the mode of movement, interfered by shell when lens moving for avoiding the body of camera lens, optical lens usually can be designed to not with housing contacts, therefore space can be there is between shell and camera lens, after optical devices use for a long time, even optical lens is inner often to have dust to be entered in housing by above-mentioned space, accumulation dust causes the fuzzy or brightness of optical image to be lowered on minute surface, for head it off, the invention provides a kind of dustproof construction between optical lens and housing, in order to solve the problem.

Summary of the invention

The object of the present invention is to provide a kind of optical devices with dustproof construction, to keep the clarity of the camera lens of optical devices.

For achieving the above object, a kind of optical devices with dustproof construction of the present invention comprise: a kind of optical devices, comprising: housing, have opening, and this opening has inwall, and this inwall has the first spiral lamination; And optical lens, be arranged at this opening, this optical lens has outside surface and arranges the second spiral lamination, wherein when this first spiral lamination is burr, this second spiral lamination is dimpled grain, or when this first spiral lamination is dimpled grain, this second spiral lamination is burr, and above-mentioned dimpled grain is corresponding with burr to be arranged.

Preferably, this optical lens is in rotary manner to moving by opening, and in the process of movement, this first spiral lamination and this second spiral lamination keep the first distance.This first distance is between 2mm to 5mm.

Preferably, this inwall and this outside surface maintain second distance, and this second distance is between 2mm to 5mm.

Preferably, this first spiral lamination is around this inwall multi-turn, and the distance between two adjacent rings is at least 8mm.

Preferably, the degree of depth of this dimpled grain is between 10mm to 20mm, and the width of this dimpled grain is between 3mm to 6mm.

Preferably, the degree of depth that this inwall extends to enclosure interior is at least greater than 30mm.

Preferably, the height of this burr is between 8mm to 18mm, and the width of this burr is between 1mm to 3mm.

Preferably, these optical devices more comprise drive unit and move in order to drive this optical lens, and when this optical lens moves, this inwall and this outside surface maintain the 3rd distance.

Preferably, these optical devices are projector, and this housing is the shell of projector.

Compared with prior art, the present invention has the optical devices of dustproof construction, can make to seal preferably between optical lens and housing, thus prevents dust from entering enclosure interior to affect the clarity of optical lens, and structure of the present invention is simple, and ensure between optical lens and housing with the use of.

Accompanying drawing explanation

Fig. 1 depicts the schematic diagram of first embodiment of the invention;

Fig. 2 depicts the corresponding relation schematic diagram of dimpled grain of the present invention and burr;

Fig. 3 depicts the schematic diagram of second embodiment of the invention;

Fig. 4 depicts the schematic diagram of third embodiment of the invention.

Embodiment

For making there is further understanding to object of the present invention, structure, feature and function thereof, embodiment is hereby coordinated to be described in detail as follows.

Please refer to Fig. 1, for first embodiment of the invention, depict the schematic diagram of optical devices 1, optical devices 1 are as projector, there is housing 10 (being equivalent to the shell of projector), optical lens 130 and drive unit 120, housing 10 has opening 140, opening 140 has inwall 110 and arranges the first spiral lamination 111 above, optical lens 130 is arranged at opening 140 inwall 110, inwall 110 is that tubular is to hold optical lens 130, optical lens 130 has outside surface 132 and arranges the second spiral lamination 131, corresponding second spiral lamination 131 of first spiral lamination 111 is arranged, in the present embodiment, the first spiral lamination 111 is around inwall about 3 circle, can according to the more circle time of the increase in demand of deviser, the degree of depth that inwall 110 extends to housing 10 inside is at least greater than 30mm, when optical lens 130 drives in rotary moving by drive unit 120, corresponding opening 140 adjust focal length or adjustment projection image size time, first spiral lamination 111 still keeps corresponding second spiral lamination 131 and keeps the first distance, this first distance can between 2mm to 5mm, surface 132 and inner wall surface 112 are also maintained at second distance in addition, this second distance is between 2mm to 5mm.

Further combined with Fig. 1 and Fig. 2, the first spiral lamination 111 and this second spiral lamination 131 will be further described below.In Fig. 1, the first spiral lamination 111 is dimpled grain, and when this second spiral lamination 131 is burr, burr can correspondence be arranged in dimpled grain.Fig. 2 illustrates the corresponding relation schematic diagram of the first spiral lamination 111 and the second spiral lamination 131, first spiral lamination 111 is around this inwall multi-turn, the distance a5 of two adjacent rings is at least 8mm, first spiral lamination 111 be dimpled grain and degree of depth a1 between 10mm to 20mm, the width a6 of dimpled grain is between 3mm to 6mm.Second spiral lamination 131 is that the height a2 of burr is between 8mm to 18mm, the width a7 of burr is between 1mm to 3mm, the bottom of the first spiral lamination 111 and the top of this second spiral lamination 131 a3 that keeps at a distance is about 2mm to 5mm, and the first distance a3 that also namely the first spiral lamination 111 and this second spiral lamination 131 keep is about 2mm to 5mm.In addition, outside surface 132 and inner wall surface 112 are also maintained at second distance a4 and are about 2mm to 5mm.

It should be noted that, above-mentioned first distance and the size of second distance are according to preferably numerical value between optical lens and housing, as too little in arranged, and interfered, arrange and then still likely have dust to enter enclosure interior too greatly when easily there is lens moving by shell.

Fig. 3 discloses second embodiment of the invention, the setting that optical devices 2 are identical haply with optical devices 1, difference is the second spiral lamination 231 that optical lens 230 is arranged to be the first spiral lamination 211 on dimpled grain and inwall 210 is the difference of burr, same, burr can correspondence be arranged in dimpled grain.

Fig. 4 discloses third embodiment of the invention, the setting that optical devices 3 are identical haply with optical devices 1, difference is in and arranges the outside that partly can expose to housing 10 in inwall 310, other parts of inwall 310 still can extend internally, optical lens 330 is arranged in inwall 310, if so when designing, enclosure interior needs more space just can move outside the inwall 310 of part, makes design more flexible.

The present invention is described by above-mentioned related embodiment, but above-described embodiment is only enforcement example of the present invention.Must it is noted that the embodiment disclosed limit the scope of the invention.On the contrary, change done without departing from the spirit and scope of the present invention and retouching, all belong to scope of patent protection of the present invention.

Claims

1. optical devices, is characterized in that, comprising:

Housing, has opening, and this opening has inwall, and this inwall has the first spiral lamination; And

Optical lens, is arranged at this opening, and this optical lens has outside surface and arranges the second spiral lamination, wherein when this first spiral lamination is burr, this second spiral lamination is dimpled grain, or when this first spiral lamination is dimpled grain, this second spiral lamination is burr, and above-mentioned dimpled grain is corresponding with burr to be arranged;

Wherein, this inwall and this outside surface maintain second distance, and this second distance is between 2mm to 5mm.

2. optical devices as claimed in claim 1, it is characterized in that, this optical lens is in rotary manner to moving by opening, and in the process of movement, this first spiral lamination and this second spiral lamination keep the first distance.

3. optical devices as claimed in claim 2, it is characterized in that, this first distance is between 2mm to 5mm.

4. optical devices as claimed in claim 1, it is characterized in that, this first spiral lamination is around this inwall multi-turn, and the distance between two adjacent rings is at least 8mm.

5. optical devices as claimed in claim 1, it is characterized in that, the degree of depth of this dimpled grain is between 10mm to 20mm, and the width of this dimpled grain is between 3mm to 6mm.

6. optical devices as claimed in claim 1, it is characterized in that, the degree of depth that this inwall extends to enclosure interior is greater than 30mm.

7. optical devices as claimed in claim 1, it is characterized in that, the height of this burr is between 8mm to 18mm, and the width of this burr is between 1mm to 3mm.

8. optical devices as claimed in claim 1, it is characterized in that, more comprise drive unit and move in order to drive this optical lens, when this optical lens moves, this inwall and this outside surface maintain this second distance.

9. optical devices as claimed in claim 1, it is characterized in that, these optical devices are projector, and this housing is the shell of projector.