Two-face fly-eye lens
A fly-eye lens and double-sided technology, which is applied in the direction of lenses, optics, instruments, etc., can solve the problems of large space for projectors, loss of stray light, and difficult installation, etc., to achieve easy installation, increase transmittance and uniformity, and save effect of space
Inactive Publication Date: 2007-08-29
XINCHENG ZHIDIAN NETWORK TECH CO LTD SHANGHAI +1
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Problems solved by technology
In addition, because the small lenses on the front and rear fly-eye lenses are all in corresponding relationship, the light energy can only work when the light emitted from a certain small lens of the front fly-eye lens hits the corresponding small lens in the rear fly-eye lens. For other lenses in the fly eye lens, these light rays will also be lost as stray light
In this way, a large part of the light energy at the center and the outer edge will be lost, and the energy utilization rate is low.
[0005] In addition, the use of two independent fly-eye lenses will occupy a large space in the projector, and in order to make the front and rear fly-eye lenses correspond, the installation is very difficult. If the installation is not good, it will affect its light transmission effect, thereby affecting quality of the projector
Method used
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[0019] Referring to Fig. 1 and Fig. 2, the double-sided fly-eye lens of the present invention includes a front fly-eye lens 1 and a rear fly-eye lens 2, and the front fly-eye lens 1 and the rear fly-eye lens 2 are integrally made on opposite sides of the same glass plate or other light-transmitting materials 3. Double sided fly eye lens. The thickness of the double-sided fly eye lens is designed to be 10-40mm. Both the front fly-eye lens 1 and the rear fly-eye lens 2 are composed of a plurality of small lenses 11 and 21 arranged in a compact manner, and the numbers of the small lenses on the front fly-eye lens and the rear fly-eye lens are equal and one-to-one correspondence. Wherein, all the small lenses 11 on the front fly-eye lens 1 are square; some or all of the small lenses can have an eccentric structure; each small lens can be spherical or aspheric, and when each small lens is a spherical surface, its radius of curvature can be equal , may also be unequal. Part or all...
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Abstract
The invention supplies a double side compound eye lens, which includes front compound eye lens and back compound eye lens, the front compound eye lens and back compound eye lens as a whole form a piece of glass plate or the two side of other translucent materials relatively form a double side compound eye lens. Because of the invention formed the front compound eye lens and back compound eye lens into a whole, and the front and back compound eye lens lie in the same glass or relative two sides of other translucent materials, the invention saves space greatly and installs easy, light transmittance and evenness have been greatly improved.
Description
technical field [0001] The invention relates to an optical lens, in particular to a double-sided fly-eye lens. Background technique [0002] Fly-eye lens, also known as fly-eye lens and array lens, is a whole lens composed of multiple small lenses. It is often used in the illumination optical system to achieve the function of homogenizing the illumination light. [0003] In the liquid crystal projector, in order to project the light emitted by the light source onto the liquid crystal panel with the same brightness, a fly-eye lens is used. After using the fly-eye lens, the uniformity of light can be increased to more than 95%. [0004] The fly-eye lens in the liquid crystal projector is generally used together, using two fly-eye lenses, that is, the front fly-eye lens and the rear fly-eye lens are used together. The traditional front and rear fly-eye lenses use the same structure, which is beneficial in simplifying the design and reducing the cost, but it is not conducive ...
Claims
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Inventor邓运明
OwnerXINCHENG ZHIDIAN NETWORK TECH CO LTD SHANGHAI