CN103605175B - A kind of optical filter - Google Patents

A kind of optical filter Download PDF

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Publication number
CN103605175B
CN103605175B CN201310615303.XA CN201310615303A CN103605175B CN 103605175 B CN103605175 B CN 103605175B CN 201310615303 A CN201310615303 A CN 201310615303A CN 103605175 B CN103605175 B CN 103605175B
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China
Prior art keywords
optical filtering
described
filtering body
installation portion
optical
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CN201310615303.XA
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Chinese (zh)
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CN103605175A (en
Inventor
葛文志
程黎
方俊林
龚建
苏利国
葛文琴
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温岭市现代晶体有限公司
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Priority to CN201310615303.XA priority Critical patent/CN103605175B/en
Publication of CN103605175A publication Critical patent/CN103605175A/en
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Publication of CN103605175B publication Critical patent/CN103605175B/en

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Abstract

The invention provides a kind of optical filter, belong to optical technical field.It solve existing optical filter cost high, enter the problem that light has consume.This optical filter, comprise rectangular frame and rectangle optical filtering body in the form of sheets, the middle part of rectangular frame is provided with the through hole be made up of logical light part and optical filtering part, optical filtering body is located at filter unit office, the thickness of optical filtering body is 0.06mm to 0.08mm, rectangular frame is also provided with the fixed sturcture for optical filtering body being fixed on filter unit office.The present invention have cost low, to light without advantages such as consumes.

Description

A kind of optical filter

Technical field

The invention belongs to optical technical field, relate to a kind of optical filter, particularly a kind of video camera optical filter.

Background technology

Thermal camera is a kind of common electronic monitoring equipment, the front end of its camera lens case is provided with optical filter, in common thermal camera, optical filter only has one piece, this thermal camera in the course of the work, easily be subject to the interference of occurring in nature infrared light sources daytime and cause the problem of CCD imaging colour cast, evening, result of use was unsatisfactory then because of visible ray disturbing effect shooting effect.In order to all obtain good image under lamp and infrared light supply, existing way is the switching device shifter arranging infrared fileter in video camera, optical filter is generally made up of framework and filter glass, on market, the thickness of filter glass on sale is 0.3mm to 0.4mm, after by day the focus adjustment of video camera is good, once after optical filter is switched, the focal length of video camera will change, cause taking the image fog come, need again to regulate the focal length of video camera, inconvenient operation and not easily realizing.

For this reason, two sheet glass are set in optical filter: a slice filter glass and a slice simple glass, need workman to be encased on framework by two sheet glass respectively, during daytime, filter glass is switched to photosensitive sites, during evening, simple glass is switched to photosensitive sites, to obtain better imaging effect.Two sheet glass can be caused when mounted to collide and produce extruding, cause and collapse limit and the principal plane polluting optical filter, installation accuracy is poor, and yield rate is low, thus impact shooting quality.And the thickness of filter glass on sale is 0.3mm to 0.4mm on market, its thickness is thicker, and the setting of two sheet glass causes the cost of optical filter high especially, is in a disadvantageous position in the market competitiveness.

Summary of the invention

The object of the invention is to there are the problems referred to above for existing technology, propose a kind of cost low, to light without consume optical filter.

Object of the present invention realizes by following technical proposal:

A kind of optical filter, comprise rectangular frame and rectangle optical filtering body in the form of sheets, the middle part of described rectangular frame is provided with the through hole be made up of logical light part and optical filtering part, described optical filtering body is located at filter unit office, it is characterized in that, the thickness of described optical filtering body is 0.06mm to 0.08mm, described rectangular frame is also provided with the fixed sturcture for optical filtering body being fixed on filter unit office.

Only divide in the filter unit of through hole and load onto optical filtering body, saved the material being used in logical light part place compared with the prior art, made the low cost of manufacture of this optical filter; Thickness due to optical filtering body is 0.06mm to 0.08mm, and when optical filter switches between logical light part and filter unit are divided, the change of focal length of camera is little, can ignore, and ensure that the imaging effect of video camera; And logical light part does not arrange optical filtering body, make the light entering logical light part lossless, the effect better effects if of video camera.

In above-mentioned optical filter, described logical light part and all rectangular and equal and opposite in direction of part that filters, described logical light part is positioned at the side of through hole center line, and described optical filtering part is positioned at the opposite side of through hole center line, and a side of above-mentioned optical filtering body overlaps with the center line of through hole.

In above-mentioned optical filter, described fixed sturcture comprises installation portion one, installation portion two and the installation portion three of being located at filter unit office, described installation portion one is oppositely arranged with installation portion three, described installation portion two is oppositely arranged with above-mentioned logical light part, the upper surface of described installation portion one, installation portion two and installation portion three forms a mounting plane, side and this mounting plane of described optical filtering body fit, and are provided with bonding agent between described mounting plane and optical filtering body.

When reality manufactures, the opposite side of optical filtering body is concordant with the surface of rectangular frame, makes the thickness of whole optical filtering body be less than the thickness of rectangular frame.By installation portion one, installation portion two and installation portion three, filtering bodies is fixed, ensure that the stability of filtering bodies, effectively extend serviceable life.

In above-mentioned optical filter, there is in described installation portion one confined planes one coincided with the center line of through hole, have the confined planes two coincided with the center line of through hole in described installation portion three, the side overlapped with the center line of through hole of above-mentioned optical filtering body is resisted against on confined planes one and confined planes two simultaneously.

Confined planes one and confined planes two can limit the position of filtering bodies, and filtering bodies side is overlapped with the center line of through hole.

In above-mentioned optical filter, the thickness of described optical filtering body is 0.07mm.

In above-mentioned optical filter, described optical filtering body is made up of glass material.

In above-mentioned optical filter, described optical filtering body is made up of crystal material.

Compared with prior art, this optical filter has the following advantages:

Rectangular frame is provided with fixed sturcture, filtering bodies can be fixed on filter unit office, ensure that the stability of filtering bodies, effectively extend serviceable life; This filter is easy for installation, only divides in the filter unit of through hole and loads onto optical filtering body, saved the material being used in logical light part place compared with the prior art, made the low cost of manufacture of this optical filter, easier for installation; Thickness due to optical filtering body is 0.06mm to 0.08mm, and when optical filter switches between logical light part and filter unit are divided, the change of focal length of camera is little, can ignore, and ensure that the imaging effect of video camera; And logical light part does not arrange optical filtering body, make the light entering logical light part lossless, the effect better effects if of video camera.

Accompanying drawing explanation

Fig. 1 is the vertical view of rectangular frame provided by the invention.

Fig. 2 is the vertical view of a kind of preferred embodiment provided by the invention.

Fig. 3 is the upward view of a kind of preferred embodiment provided by the invention.

In figure, 1, rectangular frame; 11, logical light part; 12, optical filtering part; 13, hole clipping; 2, optical filtering body; 21, installation portion one; 211, confined planes one; 22, installation portion two; 23, installation portion three; 231, confined planes two; 31, support bar one; 32, support bar two; 33, support portion.

Embodiment

Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.

Embodiment one

This optical filter, comprise rectangular frame 1 and rectangle optical filtering body 2 in the form of sheets, as shown in Figure 1, the middle part of rectangular frame 1 is provided with the through hole be made up of logical light part 11 and optical filtering part 12, and as shown in Figure 2, optical filtering body 2 is located at optical filtering part 12 place, wherein, the thickness of optical filtering body 2 is 0.06mm to 0.08mm, and in the present embodiment, the thickness of optical filtering body 2 is 0.07mm.

Rectangular frame 1 is also provided with the fixed sturcture for optical filtering body 2 being fixed on optical filtering part 12 place, as shown in Figure 1, logical light part 11 is all rectangular and equal and opposite in direction with optical filtering part 12, logical light part 11 is positioned at the side of through hole center line, optical filtering part 12 is positioned at the opposite side of through hole center line, and a side of optical filtering body 2 overlaps with the center line of through hole.

Specifically as shown in Figure 1, fixed sturcture comprises installation portion 1, installation portion 2 22 and the installation portion 3 23 of being located at optical filtering part 12 place, installation portion 1 and installation portion 3 23 are oppositely arranged, installation portion 2 22 and logical light part 11 are oppositely arranged, the upper surface of installation portion 1, installation portion 2 22 and installation portion 3 23 forms a mounting plane, side and this mounting plane of optical filtering body 2 fit, and are provided with bonding agent between mounting plane and optical filtering body 2.As shown in Figure 2, the opposite side of optical filtering body 2 is concordant with the surface of rectangular frame 1, makes the thickness of whole optical filtering body 2 be less than the thickness of rectangular frame 1.

As shown in Figure 1, there is in installation portion 1 confined planes 1 coincided with the center line of through hole, have the confined planes 2 231 coincided with the center line of through hole in installation portion 3 23, the side overlapped with the center line of through hole of optical filtering body 2 is resisted against on confined planes 1 and confined planes 2 231 simultaneously.This confined planes 1 and confined planes 2 231 can limit the position of filtering bodies, and filtering bodies side is overlapped with the center line of through hole.

Optical filtering body 2 in the present embodiment is made up of glass material.

In the present embodiment, rectangular frame 1 is also provided with supporting construction.

Concrete, as shown in Figures 2 and 3, supporting construction comprises the some support bars 1 being positioned at rectangular frame 1 side and the some support bars 2 32 being positioned at rectangular frame 1 opposite side, as shown in Figure 2, some support bars 1 are uniformly distributed and lay respectively at two long sides of rectangular glass, and as shown in Figure 3, support bar 2 32 is uniformly distributed and lays respectively at two long sides of rectangular glass, support bar 1 extends along the moving direction of rectangular frame 1, and support bar 2 32 also extends along the moving direction of rectangular frame 1.Support bar 1 and support bar 2 32 can play a supportive role to rectangular frame 1, reduce the wearing and tearing of rectangular frame 1, but also play the guiding role to rectangular frame 1, improve precision when rectangular frame 1 moves.

As shown in Figure 2, support bar 1 is 4.

As shown in Figure 3, support bar 2 32 is 2.

As shown in Figure 1, Figure 2 and Figure 3, one end that rectangular frame 1 is positioned at minor face is provided with extension, and extension is provided with hole clipping 13.

As shown in Figure 1, Figure 2 and Figure 3,4 support portions 33 in arc-shaped are provided with at the edge of rectangular frame 1, first support portion 33 wherein and second support portion 33 are positioned at a long side of rectangular frame 1,3rd support portion 33 is positioned at another long side of rectangular frame 1, and the 4th support portion 33 is positioned on the sidewall of above-mentioned extension.Support portion 33 reduces the wearing and tearing of rectangular frame 1, improves the serviceable life of rectangular frame 1.

Embodiment two

The structural principle of the present embodiment is substantially identical with the structural principle of embodiment one, and different places is, optical filtering body 2 is made up of crystal material.

Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.

Claims (7)

1. an optical filter, comprise rectangular frame (1) and rectangle optical filtering body (2) in the form of sheets, the middle part of described rectangular frame (1) is provided with the through hole be made up of logical light part (11) and the part (12) that filters, described optical filtering body (2) is located at optical filtering part (12) place, it is characterized in that, the thickness of described optical filtering body (2) is 0.06mm to 0.08mm, described rectangular frame (1) is also provided with the fixed sturcture for optical filtering body (2) being fixed on optical filtering part (12) place.
2. a kind of optical filter according to claim 1, it is characterized in that, described logical light part (11) and part (12) all rectangular and equal and opposite in direction that filters, described logical light part (11) is positioned at the side of through hole center line, described optical filtering part (12) is positioned at the opposite side of through hole center line, and a side of above-mentioned optical filtering body (2) overlaps with the center line of through hole.
3. a kind of optical filter according to claim 2, it is characterized in that, described fixed sturcture comprises the installation portion one (21) being located at optical filtering part (12) place, installation portion two (22) and installation portion three (23), described installation portion one (21) is oppositely arranged with installation portion three (23), described installation portion two (22) is oppositely arranged with above-mentioned logical light part (11), described installation portion one (21), the upper surface of installation portion two (22) and installation portion three (23) forms a mounting plane, side and this mounting plane of described optical filtering body (2) fit, bonding agent is provided with between described mounting plane and optical filtering body (2).
4. a kind of optical filter according to claim 3, it is characterized in that, there is in described installation portion one (21) confined planes one (211) coincided with the center line of through hole, have the confined planes two (231) coincided with the center line of through hole in described installation portion three (23), the side overlapped with the center line of through hole of above-mentioned optical filtering body (2) is resisted against on confined planes one (211) and confined planes two (231) simultaneously.
5. a kind of optical filter according to claim 1 or 2 or 3 or 4, is characterized in that, the thickness of described optical filtering body (2) is 0.07mm.
6. a kind of optical filter according to claim 1 or 2 or 3 or 4, is characterized in that, described optical filtering body (2) is made up of glass material.
7. a kind of optical filter according to claim 1 or 2 or 3 or 4, is characterized in that, described optical filtering body (2) is made up of crystal material.
CN201310615303.XA 2013-11-28 2013-11-28 A kind of optical filter CN103605175B (en)

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Application Number Priority Date Filing Date Title
CN201310615303.XA CN103605175B (en) 2013-11-28 2013-11-28 A kind of optical filter

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CN103605175B true CN103605175B (en) 2016-01-13

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104849790A (en) * 2015-06-05 2015-08-19 温岭市现代晶体有限公司 Infrared cut-off filter

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200979634Y (en) * 2006-05-24 2007-11-21 深圳市景阳数码技术有限公司 A camera light filter power drive
CN201210215Y (en) * 2008-05-23 2009-03-18 惠州市百宏微动技术工业有限公司 Optical filter switching apparatus used for photographic lens
CN102985856A (en) * 2010-06-18 2013-03-20 株式会社大真空 Infrared blocking filter
CN202975437U (en) * 2012-07-18 2013-06-05 深圳市勇鸿实业发展有限公司 Optical filter switching device and monitor camera
CN202995221U (en) * 2013-01-15 2013-06-12 吴国富 Dual filter switching device and shooting system
CN103364859A (en) * 2012-04-05 2013-10-23 信泰光学(深圳)有限公司 Infrared cutoff filter structure
CN203561761U (en) * 2013-11-28 2014-04-23 温岭市现代晶体有限公司 Light filter

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070154208A1 (en) * 2005-12-30 2007-07-05 Ming-Tsun Chen Light-filtering module for an image-capturing device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200979634Y (en) * 2006-05-24 2007-11-21 深圳市景阳数码技术有限公司 A camera light filter power drive
CN201210215Y (en) * 2008-05-23 2009-03-18 惠州市百宏微动技术工业有限公司 Optical filter switching apparatus used for photographic lens
CN102985856A (en) * 2010-06-18 2013-03-20 株式会社大真空 Infrared blocking filter
CN103364859A (en) * 2012-04-05 2013-10-23 信泰光学(深圳)有限公司 Infrared cutoff filter structure
CN202975437U (en) * 2012-07-18 2013-06-05 深圳市勇鸿实业发展有限公司 Optical filter switching device and monitor camera
CN202995221U (en) * 2013-01-15 2013-06-12 吴国富 Dual filter switching device and shooting system
CN203561761U (en) * 2013-11-28 2014-04-23 温岭市现代晶体有限公司 Light filter

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Address after: 317500 No. 7, science and technology road, Wenling Economic Development Zone, Zhejiang, Taizhou

Patentee after: Zhejiang modern medice optoelectronics Co. Ltd.

Address before: 317500 No. 7, science and technology road, Wenling Economic Development Zone, Zhejiang, Taizhou

Patentee before: Wenling city modern crystal company limited