CN109324380A - Carry on the back the lens construction of burnt variation compensation - Google Patents
Carry on the back the lens construction of burnt variation compensation Download PDFInfo
- Publication number
- CN109324380A CN109324380A CN201710638207.5A CN201710638207A CN109324380A CN 109324380 A CN109324380 A CN 109324380A CN 201710638207 A CN201710638207 A CN 201710638207A CN 109324380 A CN109324380 A CN 109324380A
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- China
- Prior art keywords
- burnt
- lock part
- lens barrel
- stationary lock
- body tube
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/028—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
A kind of lens construction for carrying on the back burnt variation compensation, camera lens back coke are set to F, comprising: camera lens ontology has a body tube；One outer lens barrel, the outer profile of the leading portion of the corresponding body tube of Internal periphery, back segment, and the thermal expansion coefficient of outer lens barrel material is different from the thermal expansion coefficient of body tube material；One first carries on the back burnt stationary lock part, locks on the outer profile of the back segment of outer lens barrel to body tube；And one second carry on the back burnt stationary lock part, locks on the outer profile of the leading portion of outer lens barrel to body tube；Whereby, outer lens barrel material is different from the thermal expansion coefficient of body tube material, when the temperature is changed, it chooses first and carries on the back burnt stationary lock part, make camera lens back burnt adjustable one first carry on the back burnt variable quantity to carry out carrying on the back burnt variation compensation, or choose second and carry on the back burnt stationary lock part, so that camera lens back burnt adjustable one second is carried on the back burnt variable quantity and carry out carrying on the back burnt variation compensation, therefore using different body tubes and outer lens barrel material and optionally selects the fixed position of different back cokes to do back coke variation compensation.
Description
Technical field
The present invention is in relation to a kind of lens construction for carrying on the back burnt variation compensation, and espespecially a kind of selection locks the first back coke fixing lock
Part or the burnt stationary lock part of the second back, and it is selected as the first back coke variable quantity or the burnt variable quantity of the second back.
Background technique
Due to optics scientific and technological progress, so that projector is can be used not only in office and carry out bulletin, be also gradually widely used in house
Front yard carries out ornamental video signal, program, and therefore, dealer is also directed to the mirror of reduced projection machine to allow projector to be easy to use and carry
The volume of head is researched and developed, meanwhile, the volume of the camera lens can also reduce the excessively high disadvantage of manufacturing cost when reducing.
Secondary person, the volume-diminished of the camera lens of the projector make the light-weight of projector, also meet the desired projection of consumer
Machine miniaturization, meanwhile, also meeting dealer reduces manufacturing cost, but due to the limitation of projector's miniaturization, makes the interior of the projector
Waste heat caused by portion's light source also can not effectively radiate, and cause the camera lens of the projector to have heat drift phenomenon, and then influence projection
Image quality.But it looks into, is also the class of the invention to be solved since the heat dissipating state of entire lens construction is difficult to accurate perception
Topic.
Summary of the invention
Technical problem underlying to be solved by this invention is, overcomes drawbacks described above of the existing technology, and provides one
The lens construction for kind carrying on the back burnt variation compensation chooses first and carries on the back burnt stationary lock part or second carry on the back burnt stationary lock part, and is selected as the
One carries on the back coke variable quantity or the burnt variable quantity of the second back, can compensate for back coke caused by heat drift and makes a variation, whole to solve prior art
The problem of heat dissipating state of a lens construction is difficult to accurate perception, and then the effect of promotion projection imaging quality.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of lens construction for carrying on the back burnt variation compensation, camera lens back coke are set to F, comprising: a camera lens ontology, the camera lens sheet
Body has a body tube and rear cylinder mirror, and the distance of rear end to the book office of the rear lens barrel is F set by camera lens back coke；Outside one
The thermal expansion coefficient setting of lens barrel, the outer profile of the leading portion of the corresponding body tube of Internal periphery, back segment, and the outer lens barrel material
It is set to Y at the thermal expansion coefficient that X is different from the body tube material, furthermore, the rear end face of the outer lens barrel forms a ray machine and bears against
Interface, the distance which bears against interface to book office are set to E, which is set to Δ E；One first carries on the back burnt fixing lock
Part locks on the outer profile of the outer lens barrel to the back segment of the body tube, and is held with the burnt stationary lock part of the first back with the ray machine
Distance by interface be set to a, this first carry on the back burnt stationary lock part and be set to b at a distance from the rear end of the rear lens barrel, using this
One when carrying on the back burnt stationary lock part, then the F=E+a-b；And one second carry on the back burnt stationary lock part, locks in the outer lens barrel to the body tube
Leading portion outer profile on, and burnt stationary lock part second is carried on the back and the ray machine bears against and is set to that A, this second carries on the back at a distance from interface with this
Burnt stationary lock part is set to B at a distance from the rear end of the rear lens barrel, using this second carry on the back burnt stationary lock part when, then the F=E+A-
B；Whereby, the outer lens barrel material is different from the thermal expansion coefficient of the body tube material, and when temperature change is set to T, choosing should
First carries on the back burnt stationary lock part, then a variable quantity is set to Δ a=XTa, the b variable quantity is set to Δ b=YTb, carries on the back the camera lens
It is that Δ Fi=Δ E+ Δ a- Δ b carries out carrying on the back burnt variation compensation, or chooses second back that burnt F adjustable one first, which carries on the back burnt variable quantity,
Burnt stationary lock part, then the A variable quantity is set to Δ A=XTA, the B variable quantity is set to Δ B=YTB, the F for keeping camera lens back burnt
Adjustable one second carries on the back burnt variable quantity carries out carrying on the back burnt variation compensation for Δ F2=Δ E+ Δ A- Δ B.
According to feature is before taken off, which is polycarbonate；The outer lens barrel material is liquid crystal polymer.
According to before taking off feature, which is equipped with one first fixation hole and the second fixation hole, to provide respectively this first
It carries on the back burnt stationary lock part and the burnt stationary lock part of the second back is locked.
By technological means is above taken off, the present invention passes through the thermal expansion coefficient of the body tube material and the heat of the outer lens barrel material
After the coefficient of expansion is mutually matched, and chooses this and first carry on the back burnt stationary lock part or this second carries on the back burnt stationary lock part, and be selected as this
One carries on the back coke variable quantity or the burnt variable quantity of the second back, can compensate for back coke caused by heat drift and makes a variation, and then promotes projection imaging
The effect of quality.
The invention has the advantages that it, which chooses first, carries on the back burnt stationary lock part or the burnt stationary lock part of the second back, and it is selected as
First carries on the back coke variable quantity or the burnt variable quantity of the second back, can compensate for back coke caused by heat drift and makes a variation, to solve prior art
The problem of heat dissipating state of entire lens construction is difficult to accurate perception, and then the effect of promotion projection imaging quality.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is exploded perspective view of the invention.
Fig. 2 is the combination stereogram of invention.
Fig. 3 is another combination stereogram of the invention.
Fig. 4 is cross-sectional view of the invention.
Fig. 5 is the usage state diagram that the present invention first carries on the back burnt stationary lock part.
Fig. 6 is the usage state diagram that the present invention second carries on the back burnt stationary lock part.
Figure label explanation:
10 camera lens ontologies
11 body tubes
Lens barrel before 12
Lens barrel in 13
Lens barrel after 14
20 outer lens barrels
21 first fixation holes
22 second fixation holes
23 apertures
24 ray machines bear against interface
30 first carry on the back burnt stationary lock part
40 second carry on the back burnt stationary lock part
50 cam canisters
51 sliding slots
60 idler wheels
61 idler wheel screws
A second carries on the back burnt stationary lock part and bears against at a distance from interface with the ray machine
B second carries on the back burnt stationary lock part at a distance from the rear end of the rear lens barrel
C ray machine bears against interface at a distance from the rear end of rear lens barrel
The ray machine of the outer lens barrel of E bears against the distance at interface to book office
F camera lens back is burnt
A first carries on the back burnt stationary lock part and bears against at a distance from interface with ray machine
B first carries on the back burnt stationary lock part at a distance from the rear end of rear lens barrel
Δ A A variable quantity
Δ B B variable quantity
Δ E E variable quantity
Δ F1 first carries on the back burnt variable quantity
Δ F2 second carries on the back burnt variable quantity
Δ a a variable quantity
Δ b b variable quantity
DMD DMD Digital Micromirror Device
Specific embodiment
Firstly, please referring to shown in FIG. 1 to FIG. 6, the present invention is a kind of lens construction for carrying on the back burnt variation compensation, and camera lens back is burnt
It is set to F, preferable possible embodiments include: a camera lens ontology 10, which has a body tube (Main Barrel)
11 and rear cylinder mirror 14, the distance of rear end to the book office of the rear lens barrel 14 is F set by camera lens back coke, in the present embodiment,
Lens barrel 12 and middle lens barrel 13 before the camera lens ontology 10 may also include one, the preceding lens barrel 12 be engaged on the body tube 11 front end,
Lens barrel 13 is carried on the middle section of the body tube 11 in this, the rear lens barrel 14 is socketed in the rear end of the body tube 11, but unlimited
Due to this.
One outer lens barrel 20, the outer profile of the leading portion of the corresponding body tube 11 of Internal periphery, back segment, and outer 20 material of lens barrel
The thermal expansion coefficient of matter is set to X and is set to Y different from the thermal expansion coefficient of 11 material of body tube, furthermore, the outer lens barrel 20
Rear end face form a ray machine and bear against interface 24, which bears against interface 24 to book office (DMD Digital Micromirror Device, Digital
Micromirror Device, DMD) distance be set to E (ray machine length), which is set to Δ E, also connects the mirror
Head ontology 10 and ray machine, in the present embodiment, which is polycarbonate (PC)；Outer 20 material of lens barrel is poly- for liquid crystal
It closes object (LCP), but not limited thereto.
One first carries on the back burnt stationary lock part 30, locks on the outer profile of the back segment of the outer lens barrel 20 to the body tube 11, and
It is born against with the burnt stationary lock part 30 of the first back with the ray machine and is set to a (object length), the first back coke at a distance from interface 24 admittedly
Lock part 30 is set to b (object length) at a distance from the rear end (last lens) of the rear lens barrel 20, burnt solid using first back
When lock part 30, then the F=E+a-b；One second carries on the back burnt stationary lock part 40, locks before the outer lens barrel 20 to the body tube 11
On the outer profile of section, and second carries on the back with this and be set to A at a distance from burnt stationary lock part 40 and ray machine breasting interface 24 (object is long
Degree), this second carry on the back burnt stationary lock part 40 and be set to B (object length) at a distance from the rear end (last lens) of the rear lens barrel 20,
Using this second carry on the back burnt stationary lock part 40 when, then the F=E+A-B, in the present embodiment, which is equipped with one first fixation hole
21 and second fixation hole 22, it first carries on the back burnt stationary lock part 30 to provide this respectively and second carries on the back burnt stationary lock part 40 and locked
Attached, but not limited thereto.
Whereby, outer 20 material of lens barrel is different from the thermal expansion coefficient of 11 material of body tube, when temperature change is set to T
When, the burnt stationary lock part 30 of the first back is chosen, then a variable quantity is set to Δ a=XTa, which is set to Δ b=
The adjustable one first back coke variable quantity Δ F1=Δ E+ Δ a- Δ b of YTb, the F for keeping camera lens back burnt carries out carrying on the back burnt variation compensation,
Or choose the burnt stationary lock part 40 of the second back, then the A variable quantity is set to Δ A=XTA, the B variable quantity is set to Δ B=YTB,
The adjustable one second back coke variable quantity Δ F2=Δ E+ Δ A- Δ B of the F for keeping camera lens back burnt carries out carrying on the back burnt variation compensation, also ties up
Hold good projection image quality.It is explained further, Δ a, Δ b, Δ A, Δ B are thermal expansion variable quantity, X, the Y are respectively that this is outer
Thermal expansion coefficient, the T of 11 material of 20 material of lens barrel and body tube are temperature variation, a, b, A, the B are object length, also for
The thermal expansion variable quantity=(thermal expansion coefficient) x (temperature variation) x (object length).
Therefore, when temperature change is set to T, burnt stationary lock part 40 is carried on the back using the burnt stationary lock part 30, second of the first back,
Then the first back coke variable quantity (Δ F1), the second back coke variable quantity (Δ F2) are different, and measures of dispersion is Δ F2- Δ F1=XT
(A-a)-YT (B-b), is explained further, and bears against interface 24 at a distance from the rear end (last lens) of the rear lens barrel 14 with the ray machine
It is set to C, reversely verifies possible embodiments of the invention, if 11 material of body tube is identical as outer 20 material of lens barrel, is used
The burnt stationary lock part 30, second of first back carries on the back burnt stationary lock part 40, and it is burnt to also result in the first back coke variable quantity (Δ F1), the second back
Variable quantity (Δ F2) be it is the same, in other words, the X=Y, C=B-A=b-a, Δ F2- Δ F1=XT (A-a)-XT (B-b)
=XT (A-a-B+b)=XT [(A-B)-(a-b)]=XT [(- C)-(- C)]=0.
In addition, it may further comprise a cam (Cam) cylinder 50, covers on the outer profile of the outer lens barrel 20, and it is first solid to be located at this
Determine between hole 21 and second fixation hole 22, meanwhile, which is equipped with several apertures 23, respectively the aperture 23 this
Between one fixation hole 21 and second fixation hole 22, and the cam canister 50 is equipped with several sliding slots 51, and respectively the sliding slot 51 is corresponding
The respectively aperture 23, furthermore, several idler wheels (Roller) 60 be inserted into respectively respectively in the sliding slot 51, respectively aperture 23 to the camera lens ontology
On 10 body tube 11, and with several idler wheel screws 61 lock respectively each idler wheel 60 to the camera lens ontology 10 body tube 11
On, it enables the cam canister 50 drive and adjusts the camera lens ontology 10 at a distance from DMD Digital Micromirror Device (DMD), but not limited thereto.
Based on above-mentioned composition, when projector operates a period of time, then heat drift phenomenon is difficult to the entire camera lens of accurate perception
The heat dissipating state of structure, and the burnt stationary lock part 30 of the first back or the burnt stationary lock part 40 of the second back can be chosen, and it is selected as this
First carries on the back coke variable quantity (Δ F1) or the burnt variable quantity (Δ F2) of the second back, can compensate for back coke caused by heat drift and makes a variation, also
Maintain good projection image quality.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, it is all
It is any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the invention, still falls within
In the range of technical solution of the present invention.
In conclusion the present invention designs, in structure using on practicability and cost-effectiveness, complying fully with industry development institute
It needs, and revealed structure is also to have unprecedented innovative structure, there is novelty, creativeness, practicability, meet related
The regulation of invention patent requirement, therefore lift application in accordance with the law.
Claims (3)
1. a kind of lens construction for carrying on the back burnt variation compensation, which is characterized in that the burnt system of its camera lens back is set to F, comprising:
One camera lens ontology, the camera lens ontology have a body tube and rear cylinder mirror, and the distance of rear end to the book office of the rear lens barrel is
F set by camera lens back coke；
One outer lens barrel, the outer profile of the leading portion of the corresponding body tube of Internal periphery, back segment, and the thermal expansion of the outer lens barrel material
Coefficient is set to X and is set to Y different from the thermal expansion coefficient of the body tube material, furthermore, the rear end face of the outer lens barrel forms one
Ray machine bears against interface, and the distance which bears against interface to book office is set to E, which is set to Δ E；
One first carries on the back burnt stationary lock part, locks on the outer profile of the outer lens barrel to the back segment of the body tube, and with first back
Burnt stationary lock part bears against the rear end that a, the burnt stationary lock part of the first back and the rear lens barrel are set at a distance from interface with the ray machine
Distance is set to b, using this first carry on the back burnt stationary lock part when, then the F=E+a-b；And
One second carries on the back burnt stationary lock part, locks on the outer profile of the outer lens barrel to the leading portion of the body tube, and with second back
Burnt stationary lock part bears against the rear end that A, the burnt stationary lock part of the second back and the rear lens barrel are set at a distance from interface with the ray machine
Distance is set to B, using this second carry on the back burnt stationary lock part when, then the F=E+A-B；Whereby, the outer lens barrel material and the body tube
The thermal expansion coefficient of material is different, when temperature change is set to T, chooses the burnt stationary lock part of the first back, then a variable quantity is set
Fixed to be set to Δ b=YTb at Δ a=XTa, the b variable quantity, the F adjustable one first for keeping camera lens back burnt carries on the back burnt variable quantity
Δ F1=Δ E+ Δ a- Δ b carries out carrying on the back burnt variation compensation, or chooses the burnt stationary lock part of the second back, then the A variable quantity is set to
Δ A=XTA, the B variable quantity are set to Δ B=YTB, and the F adjustable one second for keeping camera lens back burnt carries on the back burnt variable quantity Δ F2
=Δ E+ Δ A- Δ B carries out carrying on the back burnt variation compensation.
2. the lens construction according to claim 1 for carrying on the back burnt variation compensation, which is characterized in that the body tube material is poly-
Carbonic ester；The outer lens barrel material is liquid crystal polymer.
3. the lens construction according to claim 1 for carrying on the back burnt variation compensation, which is characterized in that the outer lens barrel is equipped with one the
One fixation hole and the second fixation hole are locked to provide the burnt stationary lock part of the first back and the burnt stationary lock part of the second back respectively
It is attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710638207.5A CN109324380A (en) | 2017-07-31 | 2017-07-31 | Carry on the back the lens construction of burnt variation compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710638207.5A CN109324380A (en) | 2017-07-31 | 2017-07-31 | Carry on the back the lens construction of burnt variation compensation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109324380A true CN109324380A (en) | 2019-02-12 |
Family
ID=65245448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710638207.5A Pending CN109324380A (en) | 2017-07-31 | 2017-07-31 | Carry on the back the lens construction of burnt variation compensation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109324380A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117724218A (en) * | 2024-02-18 | 2024-03-19 | 中国科学院长春光学精密机械与物理研究所 | Thermally stable camera structure |
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| WO2008093752A1 (en) * | 2007-01-30 | 2008-08-07 | Kyocera Corporation | Image picking-up device, method of mamufacturing image picking-up device, and information code-reading device |
| DE102008047277A1 (en) * | 2008-09-16 | 2010-04-15 | Hella Kgaa Hueck & Co. | Optical device for use as fixed focus camera system that is utilized as image pickup camera in motor vehicle, has compensation body provided with material including thermal expansion coefficient |
| CN101833168A (en) * | 2010-05-06 | 2010-09-15 | 中国科学院西安光学精密机械研究所 | Infrared detection device applying counter-compensation heat dissipation design |
| CN105103026A (en) * | 2013-04-09 | 2015-11-25 | 富士胶片株式会社 | Imaging device |
| CN105353489A (en) * | 2015-12-14 | 2016-02-24 | 福建福光股份有限公司 | f35mm mechanical passive-type athermalization lens and assembly method therefor |
-
2017
- 2017-07-31 CN CN201710638207.5A patent/CN109324380A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008093752A1 (en) * | 2007-01-30 | 2008-08-07 | Kyocera Corporation | Image picking-up device, method of mamufacturing image picking-up device, and information code-reading device |
| DE102008047277A1 (en) * | 2008-09-16 | 2010-04-15 | Hella Kgaa Hueck & Co. | Optical device for use as fixed focus camera system that is utilized as image pickup camera in motor vehicle, has compensation body provided with material including thermal expansion coefficient |
| CN101833168A (en) * | 2010-05-06 | 2010-09-15 | 中国科学院西安光学精密机械研究所 | Infrared detection device applying counter-compensation heat dissipation design |
| CN105103026A (en) * | 2013-04-09 | 2015-11-25 | 富士胶片株式会社 | Imaging device |
| CN105353489A (en) * | 2015-12-14 | 2016-02-24 | 福建福光股份有限公司 | f35mm mechanical passive-type athermalization lens and assembly method therefor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117724218A (en) * | 2024-02-18 | 2024-03-19 | 中国科学院长春光学精密机械与物理研究所 | Thermally stable camera structure |
| CN117724218B (en) * | 2024-02-18 | 2024-04-26 | 中国科学院长春光学精密机械与物理研究所 | Thermally stable camera structure |
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Application publication date: 20190212 |