CN211577633U

CN211577633U - Automatic light supplementing device for movie and television shooting

Info

Publication number: CN211577633U
Application number: CN201921578257.XU
Authority: CN
Inventors: 杨青青; 飞苹果
Original assignee: SHANGHAI THEATRE ACADEMY
Current assignee: SHANGHAI THEATRE ACADEMY
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-09-25
Anticipated expiration: 2029-09-23

Abstract

The utility model discloses a movie & TV is made a video recording and is used automatic light filling device, including controller, drive circuit, bright acquisition circuit, battery and the ambient light sensor of adjusting luminance, ambient light sensor sets up in camera lens both sides, and ambient light sensor passes through bright acquisition circuit connection director, and battery electric connection controller, controller still connect the light filling light source group through the drive circuit that adjusts luminance, the utility model discloses the structure principle is simple, and degree of automation is high, can improve the effect of making a video recording according to external environment luminance automatically regulated light filling lamp luminance, saves the electric energy simultaneously in the at utmost.

Description

Automatic light supplementing device for movie and television shooting

Technical Field

The utility model relates to an automatic light filling technical field of making a video recording specifically is movie & TV is made a video recording and is used automatic light filling device.

Background

The light filling of current movie & TV camera for making a video recording does not have photosensitive element mostly, adopts manual light filling form, needs the manual light filling lamp of opening or closing, and degree of automation is low, and the effect of just making a video recording is poor, gives people and has brought the inconvenience using.

Disclosure of Invention

An object of the utility model is to provide a movie & TV is made a video recording and is used automatic light filling device to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the automatic light supplementing device for movie and television shooting comprises a controller, a dimming driving circuit, a brightness acquisition circuit, a storage battery and an ambient brightness sensor, wherein the ambient brightness sensor is arranged on two sides of a camera lens, the ambient brightness sensor is connected with the controller through the brightness acquisition circuit, the storage battery is electrically connected with the controller, the controller is also connected with a light supplementing light source group through the dimming driving circuit, the light supplementing light source group is 4-6 groups, the dimming driving circuit comprises an LED driving module and a power adjusting module, the LED driving module comprises a dimming chip, a resistor A, a resistor B, a field effect transistor A and a field effect transistor B, the source electrode of the field effect transistor A is connected with the light supplementing light source group, the drain electrode of the field effect transistor A is grounded, the grid electrode of the field effect transistor A is connected with one end of the resistor A, and; the source electrode of the field effect transistor B is connected with the supplementary lighting light source group, the drain electrode is grounded, the grid electrode is connected with one end of the resistor B, the other end of the resistor B is connected with the driving end of the light adjusting chip, the light supplementing light source group is connected with the voltage stabilizing output end of the light adjusting chip, the power regulating module comprises a driving module, a surge generator, a comparator and a given host, the driving module is respectively connected with one end of a resistor C and a collector of a triode B, the other end of the resistor C is connected with the base electrode of the triode A, the collector electrode of the triode A is connected with the surge generator, the emitting electrode of the triode A is connected with one end of a resistor D, the other end of the resistor D is connected with one end of a sampling resistor E, the other end of the sampling resistor E and the given host are connected with the input end of a comparator, the output end of the comparator is connected with the base electrode of the triode B, and the emitting electrode of the triode B and the third end of the sampling resistor E are grounded.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses the structure principle is simple, and degree of automation is high, can improve the effect of making a video recording according to external environment luminance automatically regulated light filling lamp luminance, saves the electric energy simultaneously to the at utmost.

(2) The utility model discloses a drive circuit that adjusts luminance interference killing feature strong, can effectively accomplish high-power clamp to overcome the level fluctuation that the interference reason caused, cause the stroboscopic that produces in the accommodation process, can reach continuously adjustable purpose.

Drawings

FIG. 1 is a block diagram of the control principle of the present invention;

fig. 2 is a schematic diagram of the LED driving module of the present invention;

FIG. 3 is a schematic diagram of a power conditioning module of the present invention;

in the figure: the LED light source dimming circuit comprises a controller 1, a dimming driving circuit 2, a light collecting circuit 3, a storage battery 4, an ambient brightness sensor 5, a light supplementing light source group 6, an LED driving module 7, a power adjusting module 8, a dimming chip 9, a driving module 10, a surge generator 11, a comparator 12, a given host 13, a resistor A1 a, a resistor B2a, a resistor C3 a, a resistor D4 a, a sampling resistor E5 a, a field effect transistor A1B, a field effect transistor B2B, a triode A1C and a triode B2C.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The utility model discloses a controller 1, drive circuit 2 adjusts luminance, bright acquisition circuit 3, battery 4, ambient brightness sensor 5, light filling light source group 6, LED drive module 7, power adjusting module 8, adjust luminance chip 9, drive module 10, surge generator 11, comparator 12, given host computer 13, resistance A1 a, resistance B2a, resistance C3 a, resistance D4 a, sampling resistance E5 a, field effect transistor A1B, field effect transistor B2B, triode A1C and triode B2C part are the parts that general standard spare or technical staff in the field know, its structure and principle all can learn through the technical manual or learn through conventional experimental method for this technical staff.

Referring to fig. 1-3, the present invention provides a technical solution: movie & TV is made a video recording and is used automatic light filling device, including controller 1, drive circuit 2 adjusts luminance, bright acquisition circuit 3, battery 4 and ambient brightness sensor 5, ambient brightness sensor 5 sets up in camera lens both sides, ambient brightness sensor 5 is through bright acquisition circuit 3 connection director 1, battery 4 electric connection controller 1, controller 1 still connects light filling light source group 6 through drive circuit 2 that adjusts luminance, light filling light source group 6 sets up 4-6 groups.

In this embodiment, the dimming driving circuit 2 includes an LED driving module 7 and a power adjusting module 8, the LED driving module 7 includes a dimming chip 9, a resistor A1 a, a resistor B2a, a field effect transistor A1B, and a field effect transistor B2B, a source of the field effect transistor A1B is connected to the light supplementing light source group 6, a drain is grounded, a gate is connected to one end of the resistor A1 a, and the other end of the resistor A1 a is connected to a driving end of the dimming chip 9; the source electrode of the field effect transistor B2B is connected with the light supplementing light source group 6, the drain electrode is grounded, the grid electrode is connected with one end of the resistor B2a, the other end of the resistor B2a is connected with the driving end of the dimming chip 9, and the light supplementing light source group 6 is connected with the voltage stabilizing output end of the dimming chip 9. When the ambient brightness sensor detects that light is dark, the generated direct current effective value becomes small, and the light supplementing light source group starts to emit light and show warm color temperature under the condition that the direct current effective value is low in current; through the effect of the dimming chip, the direct current effective value current gradually rises to enable the light supplementing light source group to show cold color temperature, high color temperature luminous flux mixed in is increased along with the continuous rising of the direct current effective value voltage, and the color temperature of the whole lamp shown by the light supplementing light source group gradually rises.

In this embodiment, the power adjusting module 8 includes a driving module 10, a surge generator 11, a comparator 12, and a given host 13, the driving module 10 is respectively connected to one end of a resistor C3 a and a collector of a transistor B2C, the other end of the resistor C3 a is connected to the base of the transistor A1C, the collector of the transistor A1C is connected to the surge generator 11, the emitter of the transistor A1C is connected to one end of a resistor D4 a, the other end of the resistor D4 a is connected to one end of a sampling resistor E5 a, the other end of the sampling resistor E5 a and the given host 13 are connected to the input end of the comparator 12, the output end of the comparator 12 is connected to the base of the transistor B2C, the emitter of the transistor B2C and the third end of the sampling resistor E5 a are grounded, the dimming driving circuit of the present invention has, causing stroboflash generated in the adjusting process and achieving the purpose of continuous adjustment.

The utility model discloses the structure principle is simple, and degree of automation is high, can improve the effect of making a video recording according to external environment luminance automatically regulated light filling lamp luminance, saves the electric energy simultaneously to the at utmost.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Movie & TV is made a video recording and is used automatic light filling device, including controller (1), drive circuit (2), bright acquisition circuit (3), battery (4) and ambient brightness sensor (5), its characterized in that: the environment brightness sensor (5) is arranged on two sides of the camera lens, the environment brightness sensor (5) is connected with the controller (1) through a brightness acquisition circuit (3), the storage battery (4) is electrically connected with the controller (1), the controller (1) is also connected with a light supplementing light source group (6) through a dimming driving circuit (2), the light supplementing light source group (6) is provided with 4-6 groups, the dimming driving circuit (2) comprises an LED driving module (7) and a power adjusting module (8), the LED driving module (7) comprises a dimming chip (9), a resistor A (1 a), a resistor B (2 a), a field effect transistor A (1B) and a field effect transistor B (2B), the source electrode of the field effect transistor A (1B) is connected with the light supplementing light source group (6), the drain electrode is grounded, and the grid electrode is connected with one end of the resistor A (1 a), the other end of the resistor A (1 a) is connected with the driving end of the dimming chip (9); the field effect transistor B (2B) is connected with a light supplementing light source group (6) at the source electrode, the drain electrode is grounded, the grid electrode is connected with one end of a resistor B (2 a), the other end of the resistor B (2 a) is connected with the driving end of a dimming chip (9), the light supplementing light source group (6) is connected with the voltage stabilizing output end of the dimming chip (9), the power adjusting module (8) comprises a driving module (10), a surge generator (11), a comparator (12) and a given host (13), the driving module (10) is respectively connected with one end of a resistor C (3 a) and the collector of a triode B (2C), the other end of the resistor C (3 a) is connected with the base of the triode A (1C), the collector of the triode A (1C) is connected with the surge generator (11), the emitter of the triode A (1C) is connected with one end of a resistor D (4 a), the other end of the resistor D (4 a), the other end of the sampling resistor E (5 a) and a given host (13) are connected with the input end of a comparator (12), the output end of the comparator (12) is connected with the base electrode of a triode B (2 c), and the emitting electrode of the triode B (2 c) and the third end of the sampling resistor E (5 a) are grounded.