A kind of see-through glass light guide plate and its production method
A technology of glass light guide plate and production method, which is applied in the field of machine vision, can solve problems such as poor light guide efficiency of light guide points and small cracks on the glass surface, and achieve the effects of high product qualification rate, improved contrast, and improved production efficiency
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Embodiment 1
[0033] as Figure 1- Figure 2 As shown, a transparent glass light guide plate, comprising a glass substrate 1, the glass substrate 1 array is arranged with a light guide point 2, each of the light guide point 2 comprises a reflective layer 21 sequentially disposed, a shading layer (anti-reflection layer) 22 and a photoresist layer 23, the maximum length or maximum diameter L of each light guide point 2 is greater than 1um and less than 50um, the spacing between the adjacent two light guide points d is greater than 20um and less than 100um, the duty cycle of all the light guide points 4 is less than or equal to 50%, Preferably, the duty cycle may be less than or equal to 30%. The light guide point 2 is a convex or concave structure, the shape of the light guide point 2 is spherical, elliptical, gradient-shaped, bowl-shaped, triangular, rectangular, circular, semi-circular and the like. The arrangement of the light guide point 2 is a linear array, an arc array, a random number arrang...
Embodiment 2
[0038] A method for producing a perspectiveable glass light guide plate, comprising the following steps:
[0039] Step 1: Prepare the glass substrate, carry out cleaning, edging and polishing treatment, one side of the glass substrate 1 as the dot surface, coat the dot surface with a reflective film and a shading film (anti-reflection film);
[0040] Step 2: Use the light engraving machine to dot the light guide dot pattern on the mask plate, and make a standard mask plate according to the size according to the needs;
[0041] Step three: apply a layer of photoresist to the shading film, and place the standard mask plate on the photoresist for development and exposure;
[0042] Step 4: Use an alkaline solution to remove the excess coating part other than the light guide point and the photoresist layer, and after ultrasonic cleaning and drying, a transparent glass light guide plate is obtained.
[0043] As a more preferred protocol, the UV exposure method is employed in step three.
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