TWM556857U - Flare preventing photography device - Google Patents

Abstract

An anti-glare photographing device includes a casing, an infrared lighting module, a lens, a first polarizer and a second polarizer. The lens is attached to the case. The infrared lighting module is connected to the casing to emit an infrared light. The first polarizer is connected to the infrared lighting module. The first polarizer is used to filter infrared rays to form a polarized infrared light polarized along a first direction. The second polarizer is rotatably disposed adjacent to the lens. The second polarizer has a second direction, and the second direction is not parallel to the first direction.

Description

Anti-glare photography device

The present invention relates to an anti-glare photographing device, in particular to an anti-glare photographing device that can prevent glare problems caused by excessive infrared rays when photographing with an infrared lamp.

In order to shoot images in a dark environment, some cameras will be equipped with infrared lights, which can emit infrared light to fill the dark environment, so that the camera can also capture a clear scene of the dark environment. However, excessively strong infrared rays may cause near-end reflected light due to the machine itself or the near-end objects, such as: the infrared rays hit the lens glass, the camera case itself, or the camera is installed in the corner, Infrared light hits the side wall, etc., may produce reflected light, so that the image captured by the lens will be reflected by the infrared radiation with too strong intensity. In this way, the image captured by the lens will appear white fog Or flare (this is the glare phenomenon), which affects the quality of the photo.

Therefore, it is necessary to provide a new camera that can prevent glare from affecting the shooting quality when the infrared lamp emits infrared fill light.

The main object of the present invention is to provide an anti-glare photographing device that can prevent the problem of glare caused by excessive infrared rays when shooting with an infrared lamp.

In order to achieve the above-mentioned object, the novel anti-glare photography device includes a casing, an infrared lighting module, a lens, a first polarizer, and a second polarizer. The lens is attached to the case. The infrared lighting module is connected to the casing to emit an infrared light. The first polarizer is connected to the infrared lighting module. The first polarizer is used to filter infrared rays to form a polarized infrared light polarized along a first direction. The second polarizer is rotatably disposed adjacent to the lens. The second polarizer has a second direction, and the second direction is not parallel to the first direction.

According to an embodiment of the present invention, the first polarizer further includes a plurality of first gratings, and the plurality of first gratings are arranged along the first direction.

According to an embodiment of the present invention, the second polarizer further includes a plurality of second gratings, and the plurality of second gratings are arranged along the second direction.

According to an embodiment of the present invention, the infrared lighting module further includes an infrared lamp and an opening, and the infrared lamp emits infrared rays toward the opening. The first polarizer is disposed on the opening.

According to an embodiment of the present invention, the second polarizer is disposed on a side of the lens facing outward.

According to an embodiment of the present invention, the second polarizer is disposed on a side of the lens facing the inside of the casing.

According to an embodiment of the present invention, the first direction and the second direction are perpendicular to each other.

In order to allow your review committee to better understand the technical content of the new model, the preferred specific embodiments are described below.

Please refer to FIG. 1 to FIG. 4 together for the anti-glare photographing device according to the first embodiment of the present invention. Fig. 1 is a schematic diagram of an anti-glare photographing device according to a first embodiment of the present invention; Fig. 2 is a schematic diagram of infrared filtering by a first polarizer of the first embodiment of the present invention; and Fig. 3 is a first embodiment of the first embodiment of the present invention. Schematic diagram of two polarizers filtering reflected infrared rays; FIG. 4 is a schematic diagram of the light of the anti-glare photographing device according to the first embodiment of the present invention.

As shown in FIG. 1 and FIG. 2, in the first embodiment of the present invention, the anti-glare photographing device 1 is used to photograph an external object T, and glare can be prevented during the photographing process to ensure the quality of the captured image. The anti-glare photographing device 1 is, for example, a camera or a video camera, which includes a casing 10, an infrared lighting module 20, a lens 30, a first polarizer 50, a second polarizer 60, an imaging module 70, and One operation button 80.

As shown in FIG. 1 and FIG. 2, in the first embodiment of the present invention, the casing 10 is a rigid casing, and the casing 10 is used to protect components inside the anti-glare photographing device 1. The infrared lighting module 20 is connected to the casing 10, and the infrared lighting module 20 is used to emit an infrared I to provide a supplementary light effect to a dark environment, so that the anti-glare photography device 1 captures an image of the dark environment. The infrared lighting module 20 includes an infrared lamp 21 and an opening 22. The infrared lamp 21 emits infrared I toward the opening 22, and the light waves of the infrared I are polarized in all directions.

In the first embodiment of the present invention, the lens 30 is connected to the casing 10, and the lens 30 allows external light to pass through and enters the interior of the casing 10. The imaging module 70 is located in the casing 10 and is aligned with the lens 30. The imaging module 70 images by sensing the light passing through the lens 30. The operation button 80 is located on the casing 10. The operation button 80 is operated by a user for shooting and the infrared lighting module 20 emits infrared I.

In the first embodiment of the present invention, the first polarizer 50 is connected to the infrared lighting module 20 and is disposed in the opening 22. The first polarizer 50 includes a plurality of first gratings 51. The plurality of first gratings 51 are made by coating technology, which are arranged along the first direction X; the first direction X of the new model is a vertical direction, but the first direction X is not limited thereto. When the infrared light I passes through the plurality of first gratings 51 of the first polarizer 50, light waves polarized in other directions are intercepted by the plurality of first gratings 51, and only the light waves of X polarization in the first direction can pass through the plurality of first gratings. 51 to form a polarized infrared J that is X-polarized along the first direction.

Referring to FIG. 3 and FIG. 4, when the polarized infrared rays J polarized along the first direction X are incident toward the external object T, the external object T may be supplemented with light and a reflected infrared ray R may be generated. The reflected infrared R includes a first reflected infrared R1 and a second reflected infrared R2. When the polarized infrared J touches an external object T, due to the different materials of the external object T, different distances, and different surface roughness, the polarized infrared J originally reflected in the first direction X is reflected in different directions, forming a The first reflected infrared ray R1 reflected by the lens 30 is polarized in all directions. On the other hand, at the position near the anti-glare photographing device 1, it is easy to irradiate the machine itself or the near objects due to the polarized infrared rays J, such as the glass of the lens 30, the casing 10, and the adjacent wall, etc. J produces a near-end reflection, forming a second reflected infrared ray R2. Generally speaking, the second reflected infrared ray R2 keeps reflecting the polarization direction of the originally incident polarized infrared ray J (the first direction X in this embodiment). However, the second reflected infrared R2 may also be slightly different from the polarization angle of the polarized infrared J due to changes in the actual application environment, such as the design of the mechanism or the location where the mechanism is installed, and this part is not limited.

As shown in FIGS. 1 and 4, in the first embodiment of the present invention, the second polarizer 60 rotatably covers the lens 30 and is located on a side of the lens 30 facing outward. The second polarizer 60 includes a plurality of second gratings 61. The plurality of second gratings 61 are made by coating technology, and the plurality of second gratings 61 are arranged along the second direction Y. In this embodiment, the second direction Y is a horizontal direction, so the vertical direction of the first direction X and the horizontal direction of the second direction Y are perpendicular to each other; however, the angular relationship between the first direction X and the second direction Y is not equal. It is not limited to being perpendicular to each other, and may be any directions not parallel to each other. In addition, since the second polarizer 60 is designed to be rotatable and located outside the lens 30, the user can flexibly adjust the angle of the second polarizer 60 relative to the first polarizer 50, such as the first direction X and the first The angular relationship between the two directions Y can also be designed as 120 degrees.

As shown in FIG. 3 and FIG. 4, the plurality of second gratings 61 of the second polarizer 60 allow the reflected infrared rays R reflected from the outside to pass through the lens 30 to pass through to reflect the reflected infrared rays R. Because the second grating 61 is arranged along the second direction Y, when the reflected infrared R passes through the second grating 61, the light waves polarized in the other direction by the first reflected infrared R1 will be intercepted by the plurality of second gratings 61, and only along the second grating 61. The light waves polarized in the direction Y can pass through the plurality of second gratings 61; and the second reflected infrared rays R2 polarized in the first direction X are also cut off by the second grating 61, so the second reflected infrared rays R2 caused by near-end reflection can be removed; Thereby, the reflected infrared ray R filtered by the plurality of second gratings 61 forms a polarized reflected infrared ray S polarized along the second direction Y. It should be noted that in some embodiments, the polarization angle of the second reflected infrared R2 may be slightly different from the first direction X due to external environmental factors. At this time, the second polarizer can be rotated 60 to fine-tune the angle of the second direction Y of the second grating 61 to achieve the best filtering effect of the second reflected infrared ray R2.

When the user wants to use the anti-glare photography device 1 to photograph an external object T in a dark environment, the user can first use the operation button 80 to cause the infrared lamp 21 of the infrared lighting module 20 to emit infrared I. The infrared ray I is directed toward the opening 22 and passes through the plurality of first gratings 51 to form a polarized infrared ray J polarized in the first direction X. In addition, the polarized infrared light J is incident in the direction of the external object T to provide a supplementary light effect to the external object T.

When the polarized infrared J touches the external object T, the polarized infrared J reflects back to a reflected infrared R toward the lens 30. At this time, the reflected infrared R directed to the lens 30 will contact the second grating 61 and be filtered. Among the first reflected infrared rays R1, only light polarized in the second direction Y can pass, and the second reflected infrared rays R2 are cut off by the second grating 61. Therefore, the reflected infrared rays R filtered by the plurality of second gratings 61 form polarized reflected infrared rays S polarized in the second direction Y and enter the imaging module 70. Since the reflected infrared R that has finally passed through the second polarizer 60 has been double-filtered by the first polarizer 50 and the second polarizer 60, the light intensity of the reflected infrared R has been greatly weakened, and the near-end reflection can be effectively filtered (The second reflected infrared R2). Thereby, the weak intensity of the reflected infrared ray R passing through the second polarizer 60 will not cause glare, so that the image captured by the anti-glare photographing device 1 can have good quality.

In the following, please refer to FIG. 5 for an anti-glare photographing device according to a second embodiment of the present invention. FIG. 5 is a schematic diagram of an anti-glare photographing device according to a second embodiment of the present invention.

As shown in FIG. 5, the second embodiment of the present invention is different from the first embodiment in that in the anti-glare photography device 1 a of the second embodiment, the second polarizer 60 a is not located on the side of the lens 30 a facing outward. Is provided on the side of the lens 30a facing the inside of the casing 10. When the reflected infrared ray R is reflected from the outside toward the lens 30a, the reflected infrared ray R passes through the lens 30a, and then contacts the second polarizer 60a to be filtered.

With the structure of the novel anti-glare photography device 1 and 1a, infrared light can be emitted to an external object T in a dark environment to supplement light, and the infrared rays reflected back to the anti-glare photography device 1, 1a can be weakened to prevent the shooting process. The glare phenomenon occurs, so that the images captured by the anti-glare photography devices 1 and 1a can have good quality.

It should be noted that the above are merely examples, and are not limited to the examples. For example, those who do not depart from the basic structure of the new model should all be within the scope of the rights claimed by the patent, and the scope of the patent application shall prevail.

1.1a‧‧‧Anti-glare photography device
10‧‧‧chassis
20‧‧‧ Infrared Lighting Module
21‧‧‧ infrared light
22‧‧‧ opening
30, 30a‧‧‧ lens
50‧‧‧first polarizer
51‧‧‧The first grating
60, 60a‧‧‧Second polarizer
61‧‧‧ Second grating
70‧‧‧ Imaging Module
80‧‧‧ operation buttons
I‧‧‧ Infrared
J‧‧‧ Polarized Infrared
R‧‧‧Reflected infrared
R1‧‧‧First reflected infrared
R2‧‧‧Second reflected infrared
S‧‧‧ Polarized Reflected Infrared
T‧‧‧ foreign objects
X‧‧‧ first direction
Y‧‧‧ second direction

FIG. 1 is a schematic diagram of an anti-glare photographing device according to a first embodiment of the present invention. FIG. 2 is a schematic diagram of filtering infrared rays by a first polarizer of the first embodiment of the present invention. FIG. 3 is a schematic diagram of reflected infrared light filtered by a second polarizer according to the first embodiment of the present invention. FIG. 4 is a light diagram of an anti-glare photographing device according to the first embodiment of the present invention. FIG. 5 is a schematic diagram of an anti-glare photographing device according to a second embodiment of the present invention.

1‧‧‧Anti-glare photography device

10‧‧‧chassis

30‧‧‧ lens

50‧‧‧first polarizer

60‧‧‧Second polarizer

70‧‧‧ Imaging Module

80‧‧‧ operation buttons

Claims (7)

An anti-glare photographing device includes: a casing; a lens connected to the casing; an infrared lighting module connected to the casing, the infrared lighting module is used to emit an infrared light; a first polarizer is connected to the An infrared illumination module, the first polarizer is used to filter the infrared rays to form a polarized infrared light polarized along a first direction; and a second polarizer is rotatably disposed adjacent to the lens, the second polarizer There is a second direction, and the second direction is not parallel to the first direction. The anti-glare photography device according to item 1 of the scope of patent application, wherein the first polarizer further includes a plurality of first gratings, and the plurality of first gratings are arranged along the first direction. The anti-glare photography device according to item 1 of the scope of patent application, wherein the second polarizer further includes a plurality of second gratings, and the plurality of second gratings are arranged along the second direction. The anti-glare photography device according to item 1 of the scope of patent application, wherein the infrared lighting module further includes an infrared lamp and an opening, the infrared lamp emits the infrared light toward the opening, and the first polarizer is disposed in the opening. . The anti-glare photography device according to item 1 of the scope of patent application, wherein the second polarizer is disposed on a side of the lens that faces outward. The anti-glare photography device according to item 1 of the scope of the patent application, wherein the second polarizer is disposed on a side of the lens facing the inside of the casing. The anti-glare photographing device according to item 1 of the scope of patent application, wherein the first direction and the second direction are perpendicular to each other.