CN2731488Y

CN2731488Y - Adjustable kim lens

Info

Publication number: CN2731488Y
Application number: CN 200420074015
Authority: CN
Inventors: 蒙天培
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-07-28
Filing date: 2004-07-28
Publication date: 2005-10-05
Anticipated expiration: 2014-07-28

Abstract

The utility model provides an adjustable dimmer arrangement lens, comprising a first polarizing plate combined at the inner of a circular frame and a second polarizing plate combined at the inner of the other circular frame. The two circular frames are pivoted, which makes the first polarizing plate and the second polarizing plate relatively rotate to adjust the dimmer arrangement rate. Therefore, the adjustable dimmer arrangement lens can overcome the disadvantages that the use of the known dimmer arrangement lens is inconvenient and the suitable dimmer arrangement rate is not easily adjusted.

Description

Can adjust the dim light mirror

Technical field

This is novel to be the dim light mirror that uses about for camera, especially can adjust the dim light mirror of dim light amount.

Background technology

When utilizing camera shooting, often need the auxiliary of dim light mirror or polariscope, to promote the effect of photography.The dim light mirror can reduce the percent of pass of light, reduces the sensitive volume of egative film, makes that shutter speed and aperture obtain preferable adjusting utilization on the camera, and obtains suitable exposure.General dim light mirror branch has ND2, ND4, ND8 etc., and numeral is bigger, represents the light quantity percent of pass lower.A plurality of dim light mirrors can overlappingly be applied mechanically, to obtain more dim light effect.

After the light of external light source reflects through level and smooth reflecting surface, will form the polarized light of vibration.Polariscope has the palisade crystal that is arranged in parallel.When rotating polariscope, can control polarized light and enter what of camera lens, to obtain required photographic effects by parallel palisade crystal.

The light extinction rate of known various dim light mirrors is fixed, and can't optionally do local fine setting.Though can overlapping a plurality of dim light mirrors to increase light extinction rate, but the user need carry a plurality of dim light mirrors, and is in addition overlapping again, inconvenient in the use, and be difficult to be adjusted at any time according to circumstances optimal light extinction rate, and camera lens can dwindle the angle of finding a view because of overlapping a plurality of dim light mirrors.

The utility model content

For improveing the shortcoming that known dim light mirror uses inconvenience and is not easy to be adjusted to suitable light extinction rate, and propose that this is novel.

The fundamental purpose that this is novel is providing a kind of dim light mirror of adjusting, and can adjust light extinction rate with user's demand.

This novel another purpose, simple in structure in that a kind of dim light mirror of adjusting is provided, carry and use all very convenient, and can be with the function of toning temperature.

A kind of dim light mirror of adjusting of the utility model is characterized in that, comprises that first Polarizer, second Polarizer are incorporated into the inboard of a circular pedestal respectively; Wherein have at least in this first Polarizer and this second Polarizer Polarizer with respect to another Polarizer turnable in conjunction with this circle pedestal.

The direction injected facing to light of the light entrance face of this first Polarizer wherein, and this second Polarizer is at its rear, and adjacent this first Polarizer of the light emergence face of this second Polarizer.

The direction injected facing to light of the light entrance face of this first Polarizer wherein, and this second Polarizer is at its rear, and adjacent this first Polarizer of the light entrance face of this second Polarizer.

Wherein should comprise two circular frameworks that are articulated by the circle pedestal, this first Polarizer combination is a circular framework wherein, and this second Polarizer combination is another circular framework wherein.

Wherein this two circular framework has corresponding internal thread and external thread respectively, this internal thread and this external thread bolt.

Wherein having a Polarizer at least in this first Polarizer and this second Polarizer is to be made by plastic material.

Wherein having a Polarizer at least in this first Polarizer and this second Polarizer is to be made by glass material, includes liquid crystal material.

Wherein having a Polarizer in this first Polarizer and this second Polarizer at least is the polariscope group of forming in conjunction with two polariscopes.

Description of drawings

For further specifying technology contents of the present utility model, be described in detail as follows below in conjunction with embodiment and accompanying drawing, wherein:

Fig. 1 can adjust the diagrammatic cross-section of dim light mirror first embodiment for the utility model.

Fig. 2 can adjust the diagrammatic cross-section of dim light mirror second embodiment for the utility model.

Embodiment

See also shown in Figure 1.This new adjustable dim light mirror first embodiment comprises that first Polarizer 10, second Polarizer 20 are incorporated into a circular pedestal 30 inboards respectively.Circular pedestal 30 comprises the two

circular frameworks

31,32 that are articulated.First Polarizer 10 is incorporated into circular framework 31 inboards.Second Polarizer 20 is incorporated into circular framework 32 inboards.Two

circular frameworks

31,32 have corresponding internal thread 311 and external thread 321 respectively.The external thread 321 and circular framework 31 internal threads 311 bolts of circular framework 32 articulate between circular framework 32, the two

circular frameworks

31,32 circular framework 31 and can rotate unspecified angle relatively.Can the be spirally connected internal thread of camera lens of the external thread 321 of circular framework 32 makes the dim light mirror in conjunction with camera lens.First Polarizer 10, second Polarizer 20 can be the Polarizer that known plastic material is made, or comprise that glass material makes, include the polariscope of liquid crystal material, or the polariscope group of forming in conjunction with two polariscopes, for example the dim light mirror that sells of Japan " TAMRON " company etc.

First Polarizer 10 and second Polarizer 20 have

light entrance face

11,21 and

light emergence face

12,22 respectively.The direction of injecting facing to light 40 when the light entrance face 11 of first Polarizer 10, and second Polarizer 20 is at its rear, and light emergence face 22 adjacent first Polarizers 10 of second Polarizer 20.Make first Polarizer 10, the 20 relative rotations of second Polarizer can obtain the dim light effect of different light extinction rates, even can stop fully that light 40 sees through second Polarizer 20.

See also shown in Figure 2.Second embodiment of this new adjustable dim light mirror is the direction that the light entrance face 11 of first Polarizer 10 is injected facing to light 40, and second Polarizer 20 is at its rear, and light entrance face 21 adjacent first Polarizers 10 of second Polarizer 20.First Polarizer 10, second Polarizer 20 are rotated relatively, also can obtain the dim light effect of different light extinction rates, and have the effect of adjusting colour temperature.

This is novel combined integrated with two Polarizers, simple in structure, be convenient for carrying, and ease of assembly is on camera lens.Utilize two Polarizers to rotate relatively, can obtain the dim light effect of different light extinction rates, so the user is visual will adjust optimal light extinction rate, and double adjustable color temperature, to obtain preferable photographic effects.

The above record only for utilizing the embodiment of the utility model technology contents, anyly is familiar with this operator and used a novel modification of doing, variation, all belongs to the claim of the utility model opinion, and is not limited to the content that embodiment discloses.

Claims

1. can adjust the dim light mirror for one kind, it is characterized in that, comprise that first Polarizer, second Polarizer are incorporated into the inboard of a circular pedestal respectively; Wherein have at least in this first Polarizer and this second Polarizer Polarizer with respect to another Polarizer turnable in conjunction with this circle pedestal.

2. the dim light mirror of adjusting as claimed in claim 1 is characterized in that, the direction injected facing to light of the light entrance face of this first Polarizer wherein, and this second Polarizer is at its rear, and adjacent this first Polarizer of the light emergence face of this second Polarizer.

3. the dim light mirror of adjusting as claimed in claim 1 is characterized in that, the direction injected facing to light of the light entrance face of this first Polarizer wherein, and this second Polarizer is at its rear, and adjacent this first Polarizer of the light entrance face of this second Polarizer.

4. as claim 1, the 2 or 3 described dim light mirrors of adjusting, it is characterized in that, wherein should comprise two circular frameworks that are articulated by the circle pedestal, this first Polarizer combination is a circular framework wherein, and this second Polarizer combination is another circular framework wherein.

5. the dim light mirror of adjusting as claimed in claim 4 is characterized in that, wherein this two circular framework has corresponding internal thread and external thread respectively, this internal thread and this external thread bolt.

6. the dim light mirror of adjusting as claimed in claim 4 is characterized in that, wherein having a Polarizer at least in this first Polarizer and this second Polarizer is to be made by plastic material.

7. the dim light mirror of adjusting as claimed in claim 4 is characterized in that, wherein having a Polarizer at least in this first Polarizer and this second Polarizer is to be made by glass material, includes liquid crystal material.

8. the dim light mirror of adjusting as claimed in claim 4 is characterized in that, wherein having a Polarizer in this first Polarizer and this second Polarizer at least is the polariscope group of forming in conjunction with two polariscopes.