1. Group Design
- Our product is made from a lens and a tube of cardboard. Using the lens, we are able to obtain a magnified image. This is a requirement of dental imagery. Through magnification, more details can be monitored

2. Concept
- When a convex lens is placed at a distance of less than the focal length from the object viewed, a magnified but virtual image is produced, such as the one produced when looking through a magnifying glass. Hence, the lens is used as a magnifying glass for dental imagery.

3. Materials needed:
- Biconvex Lens (Focal Length 4cm)
- Cardboard Tube
- Adhesive (BluTac)
- Fibre Optic

4. Product Requirement
- Our product fits the requirements of a dental imaging device with added portability.
- A magnified image is produced by looking through the camera as a biconvex lens is used.
- A light source is included in the product by means of and optic fibre and the flash light of the phone. This allows viewing even in the deepest darkest corners of the mouth.
- Our lens is fit in at the end of a circular tube which is portable and stuck on to the imaging device ( mobile phone camera ) easily. This ensures that the product may be fit onto the device only when it is needed.
- However, the product has several limitations.
- The lens has to be at a distance of 4cm or less from the object viewed. However this is does not set the product back as dental imagery devices normally have to go close to the objects being viewed.
- The scope of the image produced is limited. However, this too does not set the product back.

Individual Logs.

Chong Hon

When I first came for the qioptiq workshop, I was skeptical as we had signed up for a biochem workshop and optics came under physics and I was totally uninterested in physics. As Mr Ronian Siew started presenting on optics, I realized that optics has many applications in real life and it is indeed something that humankind cannot live without. The applications of optics are endless, such as in spectacles and cameras and even in our eyes. Much magic can be worked with lenses, such as how the scope of an image seen can be increased. By combining two different lenses, different images can be obtained which can be used in various ways. The possibilities are limitless. Hence, we used lenses to produce a dental imagery device fitted onto our mobile phone, offering portability and convenience. I remembered some concepts we used in our physics lessons and applied it to our product. I think I learnt much about how optics is applied in the real world, and I think that the job is challenging and beneficial to society. However, I think that the most interesting part was learning how two different lenses could be used to produce an image that is better and can overcome limitations of using just one lens. Also, many other concepts in optics can be fit together, such as the periscope concept combined with the magnifying concept. I enjoyed trying out different lens combinations at different distances and it is a good chance to learn through hands on. I think this is a good way to learn rather than just through theory. Also, the chance to make an innovative new product is great and I think that the workshop changed my mindset on optics and physics.