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CN-121977702-A - Color temperature sensor and electronic device

CN121977702ACN 121977702 ACN121977702 ACN 121977702ACN-121977702-A

Abstract

The application discloses a color temperature sensor and electronic equipment, and relates to the technical field of electronics, wherein the color temperature sensor comprises a shell; the color temperature sensor comprises a shell, a substrate, an integrated circuit, a photosensitive unit, a filtering module and a filtering module, wherein the substrate is connected with the shell, the substrate and the shell form an inner wall space, the integrated circuit is mounted on the substrate, the photosensitive unit is mounted on the integrated circuit, the filtering module comprises three optical filters which are respectively used for transmitting light with different color wave bands, the filtering module is mounted on the shell, one surface of at least one optical filter in the filtering module faces towards the photosensitive unit when the color temperature sensor works, and the three optical filters work in a time-sharing mode, so that the photosensitive unit detects the light with the color wave bands transmitted by one optical filter at a time.

Inventors

  • LI SHENG

Assignees

  • 维沃移动通信有限公司

Dates

Publication Date
20260505
Application Date
20260310

Claims (10)

  1. 1. A color temperature sensor, comprising: a housing; the base plate is connected with the shell, and forms an inner wall space with the shell; An integrated circuit mounted on the substrate; A photosensitive unit mounted on the integrated circuit; the optical filter module comprises three optical filters which are respectively used for transmitting light with different color wave bands, and the optical filter module is arranged on the shell; When the color temperature sensor works, one surface of at least one optical filter in the optical filter module faces the photosensitive unit, and the three optical filters work in a time-sharing mode, so that the photosensitive unit detects light of a color wave band transmitted by one optical filter at each time.
  2. 2. The color temperature sensor of claim 1, wherein the three filters are three electrochromic slides disposed opposite the photosensitive unit; the three electrochromic slides are electrically connected with the integrated circuit, and the three electrochromic slides respectively allow light with different color wave bands to pass through when being electrified; when the color temperature sensor works, the three electrochromic slides are electrified in sequence so as to sequentially transmit light of different color bands.
  3. 3. The color temperature sensor according to claim 2, wherein the housing is provided with three sinking tables at positions opposite to the photosensitive unit, the three sinking tables respectively correspond to different mounting sizes, the three electrochromic slides are different in length, the three sinking tables respectively correspond to the three electrochromic slides in length, the three electrochromic slides are respectively mounted on the three sinking tables, and the three electrochromic slides are stacked.
  4. 4. The color temperature sensor of claim 3, wherein a first sink-in stage has a corresponding mounting dimension that is smaller than a corresponding mounting dimension of a second sink-in stage, the first sink-in stage being a distance from the light sensing unit that is smaller than a distance from the second sink-in stage to the light sensing unit, the first sink-in stage and the second sink-in stage being any two of the three sink-in stages.
  5. 5. The color temperature sensor of claim 3, wherein a first sink-in-place corresponds to a mounting dimension that is greater than a mounting dimension that corresponds to a second sink-in-place, the first sink-in-place is less than the second sink-in-place is from the light-sensing unit, and the first sink-in-place and the second sink-in-place are any two of the three sink-in-place.
  6. 6. The color temperature sensor of claim 2, wherein the three electrochromic slides comprise a first electrochromic slide, a second electrochromic slide, and a third electrochromic slide, wherein the first electrochromic slide allows light of a red wavelength band to pass through when energized, the light sensing unit detects a red component of ambient light, the second electrochromic slide allows light of a green wavelength band to pass through when energized, the light sensing unit detects a green component of ambient light, and the third electrochromic slide allows light of a blue wavelength band to pass through when energized, the light sensing unit detects a blue component of ambient light.
  7. 7. The color temperature sensor of claim 2, wherein the three electrochromic slides are energized each time for a period of less than or equal to 1ms.
  8. 8. The color temperature sensor of claim 1, wherein the three filters are a red filter, a green filter and a blue filter, respectively, the color temperature sensor further comprising a driving mechanism mounted to the housing, the three filters each being connected to the driving mechanism; when the color temperature sensor works, the driving mechanism sequentially drives the three optical filters, so that two of the three optical filters are located at a first position, the other optical filter is located at a second position, the first position is not right opposite to the photosensitive unit, the second position is right opposite to the photosensitive unit, and only one optical filter is located at the second position at a time.
  9. 9. The color temperature sensor of claim 8, wherein the three filters are positioned in a first position of the housing when the color temperature sensor is not in operation; When the driving mechanism drives the red filter to the second position, the green filter and the blue filter are positioned at the first position, and the photosensitive unit detects the red component of the ambient light; when the driving mechanism drives the green filter to the second position, the red filter and the blue filter are positioned at the first position, and the photosensitive unit detects a green component of ambient light; when the driving mechanism drives the blue filter to the second position, the red filter and the green filter are positioned at the first position, and the photosensitive unit detects a blue component of ambient light.
  10. 10. An electronic device, comprising: A housing; a color temperature sensor is provided, which is provided with a color temperature sensor, the color temperature sensor is a color temperature sensor according to any one of claims 1-9.

Description

Color temperature sensor and electronic device Technical Field The application belongs to the technical field of electronics, and particularly relates to a color temperature sensor and electronic equipment. Background Currently, color temperature detection is generally implemented on a mobile terminal by using an integral photoelectric sensor, a film with a specific photosensitive band is plated on a photosensitive unit (PD) to detect a value of a corresponding color channel, and then linear regression is performed on collected data to calculate the color temperature. For example, the RGB sensor is formed by plating films with different light sensing bands on a PD array with full spectral response, sensing R channel for red light band, G channel for green light band, and B channel for blue light band, detecting RGB components of a light source through the three channels of RGB, converting into XYZ values through linear regression, and calculating color temperature. However, since the PD distribution of each channel is not uniform, the attenuation ratio of each channel is not uniform when the angle of incident light is changed, resulting in poor angular response (FOV) of color temperature. The conventional scheme is to add a cosine corrector, such as a diffusion film, to make the attenuation ratio of each channel closer, but the sensitivity of the sensor is reduced due to the low transmittance of the diffusion film and the reduced energy of the incident light. Disclosure of Invention The embodiment of the application aims to provide a color temperature sensor and electronic equipment, which can solve the problem that the sensitivity of the sensor is reduced due to the adoption of a cosine corrector in the existing color temperature detection scheme. In a first aspect, an embodiment of the present application provides a color temperature sensor, including: a housing; the base plate is connected with the shell, and forms an inner wall space with the shell; An integrated circuit mounted on the substrate; A photosensitive unit mounted on the integrated circuit; the optical filter module comprises three optical filters which are respectively used for transmitting light with different color wave bands, and the optical filter module is arranged on the shell; When the color temperature sensor works, one surface of at least one optical filter in the optical filter module faces the photosensitive unit, and the three optical filters work in a time-sharing mode, so that the photosensitive unit detects light of a color wave band transmitted by one optical filter at each time. In a second aspect, an embodiment of the present application provides an electronic device, including: A housing; A color temperature sensor is provided, which is provided with a color temperature sensor, the color temperature sensor is the color temperature sensor according to the first aspect. The color temperature sensor comprises a shell, a base plate, an integrated circuit, a photosensitive unit and a light filtering module, wherein the base plate is connected with the shell, the base plate and the shell form an inner wall space, the integrated circuit is arranged on the base plate, the photosensitive unit is arranged on the integrated circuit, the light filtering module comprises three light filters which are respectively used for transmitting light of different color wave bands, the light filtering module is arranged on the shell, one surface of at least one light filter in the light filtering module faces towards the photosensitive unit when the color temperature sensor works, and the three light filters work in a time-sharing mode, so that the photosensitive unit detects the light of the color wave bands transmitted by one of the at least one light filter each time. In this way, the embodiment of the application sequentially samples light of different color bands through the filter module by removing the optical coating on the photosensitive units, and detects light of each color band through the same photosensitive unit, and the problem of inconsistent FOV caused by the difference of positions does not exist because the three sampled photosensitive units are the same, and the problem of improving the FOV does not need to adopt a cosine corrector, so that the sensitivity of the sensor is not reduced. Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. Drawings The foregoing and/or additional aspects and advantages of the application will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which: fig. 1 is one of structural schematic diagrams of a color temperature sensor according to an embodiment of the present application; FIG. 2 is a second schematic structural view of a color temperatur