Transmittance adjusting device

An adjustment device and technology for transmittance, applied in optical elements, optics, instruments, etc., can solve problems such as the upper limit limit of transmittance adjustment and the inability to achieve continuous adjustment of transmittance.

Active Publication Date: 2020-06-30
SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present invention provides a transmittance adjustment device to solve the problem that the upper limit of the transmitta...

Method used

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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0034] As a part of the optical system, the transmittance adjustment device needs to maintain the static uniformity, integral uniformity and pupil uniformity of the optical system while realizing the transmittance adjustment. Static uniformity refers to the uniform change of the transmittance of the light source after the transmittance adjustment device is rotated by a certain angle. The integral uniformity refers to the uniform change of the multiple rate of increase or decrease of the transmittance after the tran...

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Abstract

The invention discloses a transmittance adjusting device which comprises a rotating center area and an annular structure arranged around the rotating center area. The annular structure comprises a transmittance adjusting area and a complete light transmission area; a first side edge, perpendicular to the axial direction of the rotating center area, of the transmittance adjusting area is connectedwith a third side edge, perpendicular to the axial direction of the rotating center area, of the complete light-transmitting area; a second side edge, perpendicular to the axial direction of the rotating center area, of the transmittance adjusting area is connected with a fourth side edge, perpendicular to the axial direction of the rotating center area, of the complete light-transmitting area; the transmittance adjusting area is provided with light transmitting holes arranged in an array, and the light transmitting area of the transmittance adjusting area is gradually increased in the clockwise or anticlockwise direction around the rotating center area. The invention provides a transmittance adjusting device to solve the problems that the transmittance adjusting upper limit of an existingmechanical transmittance adjusting device is limited, and continuous adjustment of transmittance cannot be achieved.

Description

technical field [0001] The invention relates to the field of illumination technology, in particular to a transmittance adjustment device. Background technique [0002] For an illumination system in the form of dual light sources or multiple light sources, there are certain differences in the optical power of different light sources under the same power. For example, if the light source is a mercury lamp, for an illumination system with multiple mercury lamps, there is a difference of about 2% in the light power of different mercury lamps at the same power. When the optical power deviates, it is necessary to adjust the light source power to make the optical power of each light source consistent. However, this method is costly, complicated to operate, and takes a long time. Therefore, a transmittance adjustment device is often added to the lighting system to adjust the light emitted by the lighting system to obtain more uniform lighting conditions. [0003] The transmittanc...

Claims

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Application Information

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IPC IPC(8): G02B26/04
CPCG02B26/04
Inventor 赵仁洁侯宝路湛宾洲胡小林吴飞
Owner SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD
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