Anti-glare uniform light source and image capture device with the same

Abstract

An anti-glare light-equalizing light source (5) arranged on an image capturing device (1, 1'), wherein the image capturing device (1, 1') also comprises a body (2) and an optical lens (3). The anti-glare light-equalizing light source (5) comprises: a surrounding shielding wall (51, 51') removably assembled on the image capturing device (1, 1'), wherein the surrounding shielding wall (51, 51') has a combination edge (510), an action edge (511) opposite to the combination edge (510), and a daylighting channel (512, 512') penetrating through between the combination edge (510) and the action edge (511); a light-shading light-equalizing element (55, 55') formed with a light-transmitting hole (550) and arranged in the daylighting channel (512, 512'); and a plurality of light-emitting elements (53,53') each having a main light-emitting angle (530) and a full light-emitting angle (531), wherein the light-emitting elements (53,53') are arranged in the daylighting channel (512, 512'), and the main light-emitting angles (530) are blocked by the light-shading light-equalizing element (55, 55') so that light cannot be directly incident into a light-in port (6, 6'); and light is directly irradiated onto a plane (40) to be measured at at least some full light-emitting angles (531) in the light-emitting elements (53, 53').

Description

technical field [0001] An anti-glare uniform light source that is used in the detection field and can avoid uneven illumination brightness. Background technique [0002] Microscope is an essential tool for observing and studying tiny objects. It uses optical lenses to magnify and image tiny objects that cannot be clearly distinguished by human eyes, and provides image information for people to clearly observe and analyze. A common optical microscope usually includes a base, a stage, a light source assembly, an objective lens, an eyepiece, and a focusing assembly for adjusting the distance between the objective lens and the eyepiece. During operation, the glass slide carrying the sample to be observed will be placed on the stage, and the focusing assembly will be manipulated to enable the sample to be clearly imaged, so as to achieve the purpose of observation and research. [0003] In addition to general optical microscopes, fluorescence microscopy can not only be used for ...

AI Technical Summary

Problems solved by technology

However, in the dark field lighting method, only a small part of the direct light in the light source directly irradiates the object to be observed, so that the uniformity and brightness of the object to be observed are not ideal, and there is still room for improvement in lighting efficiency. When observing fluorescence images, in order to excite enough fluorescence images for observation and recording, it is generally necessary to irradiate a fixed amount of excitation beams on the object to be observed to generate sufficient fluorescence image information. However, if the previous structural configuration is used, only A small part of the light beam of the excitation light source will directly irradiate the object to be observed, resulting in the limitation of the fluorescence that can be excited, thus making it more difficult to observe and record fluorescence images

In addition, the projection angle of the light source relative to different positions of the object to be observed is different, and the illuminance will decrease inversely proportional to the square of the distance, so that the image of the object to be observed has obvious uneven brightness

[0006] Even though it has been suggested that the light emitted by the light source can be used for illumination and excitation light after one or more reflections, but the contradiction lies in: if the uniform light effect is to be good, the reflective surface cannot be a smooth and flat reflective material. This also causes the light energy to be greatly attenuated during the reflection process. If it is reflected multiple times, the light intensity will attenuate more quickly; on the contrary, if the reflective surface is too flat and smooth, the light intensity will increase, but the uniform light effect will still be insufficient. Bright spots that cause glare on the surface of the object to be observed

In particular, this structure will make it difficult to prevent the light beam emitted by the light source from directly entering the image capture device, which will become a direct glare with stronger interference when observing or recording images, so it does not really solve the difficulties of the prior art

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